CN202718719U - Electric barring device of steam turbine - Google Patents
Electric barring device of steam turbine Download PDFInfo
- Publication number
- CN202718719U CN202718719U CN 201220321220 CN201220321220U CN202718719U CN 202718719 U CN202718719 U CN 202718719U CN 201220321220 CN201220321220 CN 201220321220 CN 201220321220 U CN201220321220 U CN 201220321220U CN 202718719 U CN202718719 U CN 202718719U
- Authority
- CN
- China
- Prior art keywords
- gear
- jiggering
- barring
- housing
- steam turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses an electric barring device of a steam turbine. The electric barring device is arranged on a rear bearing seat through a shell; a motor is arranged on the shell; the motor drives a floating gear through a speed reducing mechanism; the floating gear is arranged on a swing block; the swing block is arranged on the shell through a rotating shaft; during barring, the swing block drives the floating gear to be engaged with a barring gear fixed on a rotor of the steam turbine; and during non-barring, the swing block drives the floating gear to be separated from the barring gear fixed on the rotor of the steam turbine. Through the device, an electric barring structure is simplified; the motor drives the floating gear through the speed reducing mechanism to be engaged with the barring gear to realize electric barring, and the floating gear is automatically reset after barring is finished, so the device is high in automation degree, convenient to use and good in barring effect; and by matching a manual barring mechanism, manual barring of an operator under the conditions of sudden power failure and the like is facilitated.
Description
Technical field
The utility model belongs to the steam turbine technology field, specifically relates to a kind of electric barring equipment of steam turbine.
Background technique
In the steam-turbine unit stopping process; the unit drop in temperature; because cylinder and rotor upper and lower part inhomogeneous cooling are even; rotor is after stopping operating; just can produce thermal bending; reset under these circumstances steam turbine and be easy to cause the grazing of sound part, the vibration that allowed band occurs exceeding is when serious even the damage unit.For avoiding the generation of this accident, steam turbine disposes barring mechanism, and rotor is rotated further, evenly cooling, thus can prevent that rotor from producing thermal bending.Condensing steam turbine also must make barring mechanism devote oneself to work before the starting red switch, in order to avoid shaft seal is sent vapour and caused rotor bow.Barring mechanism mostly is manual in the prior art, and the jiggering time is long, and labor intensity of operating staff is large; Perhaps electric barring complex structure, automaticity is not high, and it is very not convenient to use, and the jiggering effect is not good enough.
Summary of the invention
The utility model mainly is to solve the existing technical problem of above-mentioned prior art, and a kind of electric barring equipment of steam turbine is provided.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of electric barring equipment of steam turbine, be arranged on the rear bearing block through housing, described housing is provided with motor, motor drives floating gear through reducing gear, and floating gear is meshed with jiggering gear on being fixed on turbine rotor during jiggering; Wherein floating gear is arranged on the swinging block, swinging block is arranged on the housing through rotating shaft, swinging block drives floating gear and is meshed with jiggering gear on being fixed on turbine rotor during jiggering, and swinging block does not drive the floating gear disengaging and is fixed on jiggering gear on the turbine rotor during jiggering; The rotating shaft eccentric setting of swinging block, a side that is provided with floating gear is heavier, and the side end face of this side is provided with spacing breach, and spacing breach is suitable with the operating grip that is arranged on the housing; Opposite side is provided with auxiliary depression bar at swinging block, and auxiliary depression bar is arranged on the housing, when the jiggering that is in an emergency can't normally withdraw from, can take the by force out-of-gear engagement of auxiliary depression bar; Operating grip is other also to be provided with the first position limit switch on housing, operating grip and the first position limit switch are suitable, and the first position limit switch control motor; Housing is provided with solenoid valve, solenoid valve because gear transmission and bearing need to lubricate, must guarantee the lubricant oil supply during jiggering in lubricant pipe is communicated to the cavity of reducing gear, lubricant oil is fed from the lubricant oil interface by steam-turbine lubricating system, enters by solenoid valve in the cavity of reducing gear.Barring mechanism is not devoted oneself to work or when steam turbine operation, the motor outage is stopped transport, and floating gear and jiggering gear disengage fully.
When needing electric barring, operator rotate manual oil spout button to enable position from stop position first, the jiggering signaling lamp is bright, lubricant oil enters in the cavity of reducing gear by solenoid valve, again operating grip is pulled open outward and break away from swinging block, swing downwards at Action of Gravity Field bottom motion block and make the floating gear engagement be fixed on jiggering gear on the turbine rotor; Simultaneously the first stroke switch motion, motor power is connected, and machine operation drives floating gear through reducing gear and rotates, and floating gear mesh plate skiving wheel rotates and evenly cooling the continuous constant speed of turbine rotor, thereby can prevent that turbine rotor from producing thermal bending.When stopping electric barring, can directly cut off motor power, motor quits work, and turbine rotor since the effect of inertia also to be rotated further, after this jiggering gear becomes driving gear, and floating gear becomes driven gear, and floating gear is thrown away by the jiggering gear, and swinging block upwards swings, swinging block is operated handle and cooperates spacing breach to pin, floating gear breaks away from the jiggering gear, and position limit switch is resetted, and jiggering stops; Also direct red switch steam turbine, when the turbine rotor rotating speed raises above the jiggering rotating speed, the jiggering gear becomes driving gear, and floating gear becomes driven gear, and floating gear is thrown away by the jiggering gear, and swinging block upwards swings, swinging block is operated handle and cooperates spacing breach to pin, floating gear breaks away from the jiggering gear, and position limit switch is resetted, and jiggering stops.
As preferably, the support of housing is provided with the auxiliary operation handwheel, the auxiliary operation handwheel is suitable with the second position limit switch that is arranged on the housing, and the general power of the second position limit switch control barring gear, is furnished with the auxiliary operation handwheel, the operation personnel hand is moving under the situations such as convenient suddenly power failure carries out jiggering: operator take off the auxiliary operation handwheel from support, this moment, the jiggering general power was cut off in the action of the second position limit switch, avoid when hand turning, connecting owing to misoperation the power supply of motor, guarantee operator safety; Operator insert the motor tail end with the auxiliary operation handwheel, then operating grip is pulled open outward, swinging block makes floating gear mesh the jiggering gear that is fixed on the turbine rotor to lower swing, this moment, general power was cut off, can be owing to position limit switch action and plugged, rotate the auxiliary operation handwheel by motor prompting direction and carry out jiggering, as long as jiggering finishes counter-rotating auxiliary operation handwheel, floating gear can break away from the jiggering gear, makes sure to keep in mind that the auxiliary operation handwheel is taken out reinstall from the motor tail end and puts.
The utility model has been simplified the electric barring structure, and motor drives floating gear mesh plate skiving wheel through reducing gear can realize electric barring, and floating gear automatically reset after jiggering finished, and automaticity is high, and is easy to use, and the jiggering effect is good; Also is furnished with simultaneously Manual jigger mechanism, the moving jiggering that carries out of operation personnel hand under the situations such as convenient suddenly power failure.Therefore the utlity model has characteristics rational in infrastructure.
Description of drawings
Fig. 1 is a kind of main TV structure schematic diagram of the present utility model;
Fig. 2 is a kind of left TV structure schematic diagram of the present utility model;
Fig. 3 is a kind of plan structure schematic diagram of the present utility model;
Fig. 4 is the A-A sectional structure schematic diagram of Fig. 3.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: referring to Fig. 1～4, the utility model is arranged on the rear bearing block through housing 6, and housing 6 is provided with motor 1, and motor 1 drives floating gears 5 through reducing gear 4, and floating gear 5 is meshed with jiggering gear 8 on being fixed on turbine rotor during jiggering; Wherein floating gear 5 is arranged on the swinging block 13, swinging block 13 is arranged on the housing 6 through rotating shaft 14, swinging block 13 drives floating gears 5 and is meshed with jiggering gear 8 on being fixed on turbine rotor during jiggering, and swinging block 13 does not drive floating gears 5 disengagings and is fixed on jiggering gear 8 on the turbine rotor during jiggering; Rotating shaft 14 eccentric settings of swinging block 13, a side that is provided with floating gear 5 is heavier, and the side end face of this side is provided with spacing breach 15, and spacing breach 15 is suitable with the operating grip 9 that is arranged on the housing 6; Opposite side is provided with auxiliary depression bar 10 at swinging block 13, and auxiliary depression bar 10 is arranged on the housing 6, when the jiggering that is in an emergency can't normally withdraw from, can take the by force out-of-gear engagement of auxiliary depression bar 10; Operating grip 9 sides also are provided with the first position limit switch 7 on housing 6, operating grip 9 and the first position limit switch 7 are suitable, and the first position limit switch 7 control motors 1; Housing 6 is provided with solenoid valve 11, the lubricant pipe 16 of solenoid valve 11 is communicated in the cavity of reducing gear 4, because gear transmission and bearing need to lubricate, must guarantee the lubricant oil supply during jiggering, lubricant oil is fed from the lubricant oil interface by steam-turbine lubricating system, enters by solenoid valve in the cavity of reducing gear 4.Barring mechanism is not devoted oneself to work or when steam turbine operation, motor 1 outage is stopped transport, and floating gear 5 disengages fully with jiggering gear 8.
When needing electric barring, operator rotate manual oil spout button to enable position from stop position first, the jiggering signaling lamp is bright, lubricant oil enters in the cavity of reducing gear by solenoid valve and lubricant pipe, again operating grip is pulled open outward and break away from swinging block, swing downwards at Action of Gravity Field bottom motion block and make the floating gear engagement be fixed on jiggering gear on the turbine rotor; Simultaneously the first stroke switch motion, motor power is connected, and machine operation drives floating gear through reducing gear and rotates, and floating gear mesh plate skiving wheel rotates and evenly cooling the continuous constant speed of turbine rotor, thereby can prevent that turbine rotor from producing thermal bending.When stopping electric barring, can directly cut off motor power, motor quits work, and turbine rotor since the effect of inertia also to be rotated further, after this jiggering gear becomes driving gear, and floating gear becomes driven gear, and floating gear is thrown away by the jiggering gear, and swinging block upwards swings, swinging block is operated handle and cooperates spacing breach to pin, floating gear breaks away from the jiggering gear, and position limit switch is resetted, and jiggering stops; Also direct red switch steam turbine, when the turbine rotor rotating speed raises above the jiggering rotating speed, the jiggering gear becomes driving gear, and floating gear becomes driven gear, and floating gear is thrown away by the jiggering gear, and swinging block upwards swings, swinging block is operated handle and cooperates spacing breach to pin, floating gear breaks away from the jiggering gear, and position limit switch is resetted, and jiggering stops.
As for subsequent use, the support 12 of housing 6 is provided with auxiliary operation handwheel 2, auxiliary operation handwheel 2 is suitable with the second position limit switch 3 that is arranged on the housing 6, and the general power of the second position limit switch 3 control barring gears, is furnished with the auxiliary operation handwheel, the operation personnel hand is moving under the situations such as convenient suddenly power failure carries out jiggering: operator take off the auxiliary operation handwheel from support, this moment, the jiggering general power was cut off in the action of the second position limit switch, avoid when hand turning, connecting owing to misoperation the power supply of motor, guarantee operator safety; Operator insert the motor tail end with the auxiliary operation handwheel, then operating grip is pulled open outward, swinging block makes floating gear mesh the jiggering gear that is fixed on the turbine rotor to lower swing, this moment, general power was cut off, can be owing to position limit switch action and plugged, rotate the auxiliary operation handwheel by motor prompting direction and carry out jiggering, as long as jiggering finishes counter-rotating auxiliary operation handwheel, floating gear can break away from the jiggering gear, makes sure to keep in mind that the auxiliary operation handwheel is taken out reinstall from the motor tail end and puts.
The utility model has been simplified the electric barring structure, and motor drives floating gear mesh plate skiving wheel through reducing gear can realize electric barring, and floating gear automatically reset after jiggering finished, and automaticity is high, and is easy to use, and the jiggering effect is good; Also is furnished with simultaneously Manual jigger mechanism, the moving jiggering that carries out of operation personnel hand under the situations such as convenient suddenly power failure.Therefore the utlity model has characteristics rational in infrastructure.
At last, should be pointed out that above embodiment only is the more representational example of the utility model.Obviously, the utility model is not limited to above-described embodiment, and many distortion can also be arranged.Every foundation technical spirit of the present utility model all should be thought to belong to protection domain of the present utility model to any simple modification, equivalent variations and modification that above embodiment does.
Claims (6)
1. the electric barring equipment of a steam turbine is arranged on the rear bearing block through housing, it is characterized in that described housing is provided with motor, and motor drives floating gear through reducing gear, and floating gear is meshed with jiggering gear on being fixed on turbine rotor during jiggering.
2. the electric barring equipment of described steam turbine according to claim 1, it is characterized in that described floating gear is arranged on the swinging block, swinging block is arranged on the housing through rotating shaft, swinging block drives floating gear and is meshed with jiggering gear on being fixed on turbine rotor during jiggering, and swinging block does not drive the floating gear disengaging and is fixed on jiggering gear on the turbine rotor during jiggering.
3. the electric barring equipment of described steam turbine according to claim 2, the rotating shaft eccentric setting that it is characterized in that described swinging block, a side that is provided with floating gear is heavier, and the side end face of this side is provided with spacing breach, and spacing breach is suitable with the operating grip that is arranged on the housing; Opposite side is provided with auxiliary depression bar at swinging block, and auxiliary depression bar is arranged on the housing.
4. the electric barring equipment of described steam turbine according to claim 3 is characterized in that described operating grip is other also to be provided with the first position limit switch that on housing operating grip and the first position limit switch are suitable, and the first position limit switch is controlled motor.
5. the electric barring equipment of described steam turbine according to claim 1 and 2 is characterized in that described housing is provided with solenoid valve, and solenoid valve is in lubricant pipe is communicated to the cavity of reducing gear.
6. the electric barring equipment of described steam turbine according to claim 1 and 2, the support that it is characterized in that described housing is provided with the auxiliary operation handwheel, the auxiliary operation handwheel is suitable with the second position limit switch that is arranged on the housing, and the general power of the second position limit switch control barring gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321220 CN202718719U (en) | 2012-07-01 | 2012-07-01 | Electric barring device of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220321220 CN202718719U (en) | 2012-07-01 | 2012-07-01 | Electric barring device of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718719U true CN202718719U (en) | 2013-02-06 |
Family
ID=47620545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220321220 Expired - Lifetime CN202718719U (en) | 2012-07-01 | 2012-07-01 | Electric barring device of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718719U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014631A (en) * | 2016-06-23 | 2016-10-12 | 中车大连机车车辆有限公司 | High-power diesel engine barring device |
| CN106536872A (en) * | 2014-11-05 | 2017-03-22 | 三菱重工压缩机有限公司 | Turning apparatus |
| CN106574517A (en) * | 2014-10-30 | 2017-04-19 | 三菱重工压缩机有限公司 | Turning device |
| CN109760952A (en) * | 2018-11-30 | 2019-05-17 | 东方电气集团东方汽轮机有限公司 | Displaceable packs protective device |
| CN111852584A (en) * | 2020-08-30 | 2020-10-30 | 华能山东石岛湾核电有限公司 | Accurate control circuit and method for stepping of turning gear of steam turbine |
| CN111927583A (en) * | 2020-08-13 | 2020-11-13 | 杭州中能汽轮动力有限公司 | Automatic-meshing electric barring gear and control method |
-
2012
- 2012-07-01 CN CN 201220321220 patent/CN202718719U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574517A (en) * | 2014-10-30 | 2017-04-19 | 三菱重工压缩机有限公司 | Turning device |
| US10487658B2 (en) | 2014-10-30 | 2019-11-26 | Mitsubishi Heavy Industries Compressor Corporation | Turning device |
| CN106536872A (en) * | 2014-11-05 | 2017-03-22 | 三菱重工压缩机有限公司 | Turning apparatus |
| CN106014631A (en) * | 2016-06-23 | 2016-10-12 | 中车大连机车车辆有限公司 | High-power diesel engine barring device |
| CN109760952A (en) * | 2018-11-30 | 2019-05-17 | 东方电气集团东方汽轮机有限公司 | Displaceable packs protective device |
| CN111927583A (en) * | 2020-08-13 | 2020-11-13 | 杭州中能汽轮动力有限公司 | Automatic-meshing electric barring gear and control method |
| CN111852584A (en) * | 2020-08-30 | 2020-10-30 | 华能山东石岛湾核电有限公司 | Accurate control circuit and method for stepping of turning gear of steam turbine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202718719U (en) | Electric barring device of steam turbine | |
| CN204511786U (en) | Be provided with the speed-increasing gear case for high-power wind of electric barring equipment | |
| CN204656694U (en) | A kind of miniature Chinese medicine grinding mill | |
| CN104878564A (en) | Mechanical clutch device for deceleration clutch of washing machine | |
| CN204212820U (en) | A kind of TRT electric barring equipment | |
| CN103065825A (en) | Medium-voltage disconnecting switch manual-automatic intelligent electric operating mechanism | |
| CN202684974U (en) | Brake engaging and disengaging gear applied to Chinese medicinal herb slicing machine | |
| CN202780358U (en) | Welding positioner | |
| CN204622963U (en) | A kind of unit head based on the wide cutting scope of bi-motor | |
| CN203879670U (en) | Remote control electric starting device | |
| CN104493634A (en) | Protection door structure of lathe | |
| CN202487441U (en) | Electric operating mechanism for grounding switch | |
| CN204151369U (en) | The complete pneumatic accident actuating device of converter inclining machine | |
| JP2012096351A (en) | Flying shear, and flying shearing method | |
| CN207644376U (en) | Cableway component | |
| CN202391498U (en) | Throw-in type turning gear of chain wheel worm and worm wheel escapement | |
| CN205269909U (en) | Remove polar plate electrostatic precipitator sprocket safety arrangement | |
| CN202571326U (en) | Protective cover for C A 6136 lathe rotary lathe tool | |
| CN202742119U (en) | Conical gear transmission mechanism of circular knife cutting machine | |
| CN202715449U (en) | Low-speed transmission device of mill | |
| CN202673587U (en) | High-speed shaft drive device of wind driven generator | |
| CN204469907U (en) | Novel centrifugal oil refining machine | |
| CN203638321U (en) | Dissolution roller with braking device | |
| CN204186850U (en) | Be with rig emergency stop (apparatus) of stopping | |
| CN203631342U (en) | Low-speed energy releasing device of spring operating mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130206 |
|
| CX01 | Expiry of patent term |