CN2470815Y - Steam turbine adjusting-safety parts testing apparatus - Google Patents
Steam turbine adjusting-safety parts testing apparatus Download PDFInfo
- Publication number
- CN2470815Y CN2470815Y CN01211867U CN01211867U CN2470815Y CN 2470815 Y CN2470815 Y CN 2470815Y CN 01211867 U CN01211867 U CN 01211867U CN 01211867 U CN01211867 U CN 01211867U CN 2470815 Y CN2470815 Y CN 2470815Y
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- test
- main shaft
- speed
- speed regulator
- rotating speed
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- Expired - Lifetime
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Abstract
The utility model relates to a plurality of adjustment and security components of turbine generator, such as a speed controller, an emergency governor, a device for the test of H value in the installation space of the speed controller and a speed controller slide valve unit, and the test comparison of the spot emergency shutoff revolution meter. The utility model is characterized in that: the inner of a test box is provided with an oil feeding pipe and an oil return pipe, and the test box has a magnetic-resistance sensor and a displacement sensor inside, and a main shaft for increasing the rotate speed; the main shaft is driven by a speed regulating motor; the main shaft is provided with a connecting flange. The utility model can eliminate relative defects of adjustment and security components, and reduce or avoid the loss of power plant. The utility model is applicable for power plants.
Description
The utility model relates to some adjusting on the Turbo-generator Set, security personnel's parts, as: the assemblage gap H value of speed regulator, emergency overspeed governor, speed regulator and governor pilot valve group is tested, and the device of the comparison of on-the-spot emergency trip tachometer gage test.
Speed regulator is the rotating speed sensitive element on the Turbo-generator Set, and the displacement relation of the rotating speed of speed regulator and its speed governing piece is called the family curve of speed regulator, and the underproof speed regulator of family curve is exactly a waste product.Speed regulator must carry out routine test and detect, and checks whether its family curve satisfies standard-required; Some speed regulator, or even the speed regulator that newly dispatches from the factory, family curve can not satisfy standard-required, and the operation on Steam Turbine of these speed regulators can bring very serious consequence, must adjust or change; Though some speed regulator has moved a period of time, the still conformance with standard requirement of its family curve can continue to use, and has avoided waste.
The Turbo-generator Set emerged in operation load swing problem of some power plant diagnoses former because speed regulator element fatigue, dynamic perfromance to degenerate after testing.By the just oil spout deformation test of band of speed regulator, can check diagnosis speed regulator parts whether fatigue, the dynamic quality of speed regulator in the perform region etc., the fault of speed regulator is predicted; Prevention unit load swing, and accident such as band fracture just.
Emergency overspeed governor is a critical elements of Turbo-generator Set security system, and one or two eccentric flyball is arranged on it.During normal the operation, emergency overspeed governor is driven by the main shaft of Turbo-generator Set, the rotating speed of unit is high more, the centrifugal force of flyball is big more, when centrifugal force acquires a certain degree, flyball overcomes the pretightning force of spring and flies out, and control security personnel mechanism action cuts off the admission of Turbo-generator Set, guarantees the safety of unit.Qualified emergency overspeed governor is the interior action of specialized range value that reaches standard-required when its rotating speed, and flyball shifts to an earlier date or hysteresis flies out, and all can bring loss or bring hidden danger to safety to power plant.Emergency overspeed governor is after operation a period of time, and its action rotating speed just error may occur, need in time test, in time find defective on proving installation, in time adjust, and guarantees the stability and the reliability of its action rotating speed; Avoid on Power Plant, adjusting repeatedly the huge waste of bringing, simultaneously the defective that influences its action speed stability is eliminated, the reliability and stability of safety action rotating speed, prevention unit hypervelocity accident guarantees unit safety.
Because the defective of the parts such as emergency overspeed governor of security system, some unit can't carry out the movement test of emergency overspeed governor knockson, thereby makes unit operation have hidden danger.By on Steam Turhine Adjustment security personnel components test unit, emergency overspeed governor is carried out the movement test of knockson, diagnosable and eliminate parts hidden danger, guarantee that the movement test of on-the-spot emergency overspeed governor knockson carries out smoothly, provide favourable assurance for preventing steam turbine hypervelocity accident.
At some unit in the overspeed test process, can't accurately measure the problems such as action rotating speed of emergency overspeed governor, can together be installed in the emergency overspeed governor of this unit, magnetoresistive transducer and emergency trip tachometer gage on the Steam Turhine Adjustment security personnel components test unit; Simultaneously the test through verification together is installed on the proving installation with magnetoresistive transducer and emergency trip tachometer gage.Put main shaft by trial assembly, promote the emergency overspeed governor rotating speed to action, the operation of recording rotating speed of two emergency trip tachometer gages of comparison by comparison, is found out the inaccurate reason of on-the-spot test, carries out respective handling.
One of effect of governor pilot valve group is to match with speed regulator, and turbodynamo is carried out supplementary protection, and the assemblage gap between speed regulator and the governor pilot valve group is supplementary protection assemblage gap H value.Can assemblage gap H value correct operation most important to supplementary protection, and the H value is excessive, and then supplementary protection can move in advance, can cause waste; The H value is too small, and supplementary protection can not move in the rotating speed that requires, and does not have protective effect.The test and the adjustment of supplementary protection assemblage gap value can not be carried out (not allowing repeatedly generating unit speed to be reached the scope of its action) at the scene, determine the H value by experience simultaneously, also are inaccurate.For guaranteeing the reliable of supplementary protection action rotating speed, need on proving installation, test, adjust.
The purpose of this utility model is: some the adjusting security personnel parts on the test Turbo-generator Set are provided, as: the device of the assemblage gap H value of speed regulator, emergency overspeed governor, speed regulator and governor pilot valve group etc.It can finish following task:
(1) the characteristic test of speed regulator;
(2) speed regulator is just with the test of oil spout distortion;
(3) test and the adjustment of emergency overspeed governor action rotating speed;
(4) movement test of emergency overspeed governor knockson;
(5) comparison of emergency trip tachometer gage test.
(6) test and the adjustment of the assemblage gap H value of speed regulator and governor pilot valve group.
The technical solution of the utility model is: oil pipe and the scavenge pipe gone up with pressure arranged in the test box, also have magnetoresistive transducer and displacement transducer in the test box, promote the main shaft that rotating speed is used simultaneously in addition, main shaft drives by buncher, and joint flange is arranged on the main shaft.
Introducing the utility model below in conjunction with accompanying drawing is how to finish its innovation and creation purpose.
Fig. 1 is that the utility model just has been with oil spout deformed configurations synoptic diagram at family curve, assemblage gap H value and the speed regulator of test speed regulator.
Fig. 2 is that the utility model is at the action rotating speed of test emergency overspeed governor and the movement test synoptic diagram of knockson.
The drawing explanation.
Fig. 1: 1-buncher; 2-driving triangular belt; 3-main shaft; 4-bearing; 5-test casing; 6-lubricating oil pipeline; 7, go up oil pipe for 8-two; 9-pumping plant; 10-scavenge pipe; 11-joint flange; 12-speed regulator; 13-governor pilot valve group; 14-displacement transducer
Fig. 2: 1-buncher; 2-driving triangular belt; 3-main shaft; 4-bearing; 5-test casing; 6-lubricating oil pipeline; 7, go up oil pipe for 8-two; 9-pumping plant; 10-scavenge pipe; 11-joint flange; 15-speed regulator; 16-governor pilot valve group; 17-displacement transducer
(1), the characteristic test of speed regulator
See Fig. 1 (not comprising 13), by joint flange 11, speed regulator 12 is fastened on the main shaft 3 of proving installation, displacement transducer 14 is withstood on the speed governing piece of speed regulator 12, speed regulator will together rotate with main shaft again, and buncher 1 is by the rotating speed of main shaft control speed regulator, can test out the rotating speed of speed regulator and the funtcional relationship of speed governing piece displacement like this, compare with the performance data of standard-required, satisfy standard-required then for qualified, otherwise be defective.
(2) speed regulator is just with the test of oil spout distortion
See Fig. 1,, speed regulator 12 is fastened on the main shaft 3 of proving installation, again governor pilot valve group 13 is installed in the front end of speed regulator, certain spacing is arranged between the two, be assemblage gap H value by joint flange 11.Add displacement transducer 14 in the governor pilot valve group with the movable pulley back; The buncher 1 that speed regulator goes out in the proving installation drives by main shaft, and pumping plant 6 is gone up oil pipe 7,8 by 2 and supplied with the pressure oil that the governor pilot valve group provides declared working condition.Adjust suitable assemblage gap H value, and record displacement transducer displayed value at this moment, buncher drives speed regulator by main shaft and promotes rotating speed then, up to 3000r/min, writes down the displacement transducer displayed value of this moment.According to the speed regulator displacement under servo-actuated spool displacement amount, supplementary protection assemblage gap H value, the compulsory exercise rotating speed, with the working clearance of movable pulley and speed regulator, the speed regulator oil spout of band just is out of shape in the time of can calculating 3000r/min.This kind method of testing also can test out the speed regulator oil spout distortion of band just under any rotating speed.
(3) test and the adjustment of emergency overspeed governor action rotating speed
See Fig. 2 (not comprising 13), by joint flange 11, emergency overspeed governor 12 is fastened on the main shaft of proving installation 3, emergency overspeed governor will together rotate with the main shaft of proving installation, magnetoresistive transducer 14 is installed in the correct position that flyball exports, experiences the action of flyball.Regulate buncher 1, by the rotating speed of main shaft control emergency overspeed governor, to rotating speed that moves until emergency overspeed governor from low to high of buncher input, if flyball moves rotating speed in the specialized range of standard, then emergency overspeed governor is qualified; Otherwise be defective.
The action rotating speed of flyball is relevant with the pretightning force of flyball upper spring.The method of adjusting emergency overspeed governor action rotating speed is: test out its action rotating speed earlier, compare with the standard operation range of speeds, by pine or the tightly nut on emergency overspeed governor flyball top suitably, change the pretightning force of spring, further verify the action rotating speed of emergency overspeed governor, repeatedly several times, make its action rotating speed in the scope of standard code.
(4) movement test of emergency overspeed governor knockson
See Fig. 2, by joint flange 11, emergency overspeed governor 12 is fastened on the main shaft of proving installation 3, emergency overspeed governor will together rotate with the main shaft of proving installation, and magnetoresistive transducer 14 is installed in the correct position of flyball outlet, experiences the action of flyball; And spray bar 13 is installed to provide pressure oil to emergency overspeed governor knockson rear portion.By the proving installation main shaft, promote the emergency overspeed governor rotating speed to 3000r/min, provide the oil sources of certain pressure by pumping plant to emergency overspeed governor knockson rear portion then, check that can the emergency overspeed governor knockson regular event.
(5) comparison of emergency trip tachometer gage test
At some unit in the overspeed test process, can't accurately measure the problems such as action rotating speed of emergency overspeed governor, can together be installed in the emergency overspeed governor of this unit, magnetoresistive transducer and emergency trip tachometer gage on the Steam Turhine Adjustment security personnel components test unit; Simultaneously the test through verification together is installed on the proving installation with magnetoresistive transducer and emergency trip tachometer gage.By the proving installation main shaft, promote the emergency overspeed governor rotating speed to action, the operation of recording rotating speed of two emergency trip tachometer gages of comparison by comparison, is found out the inaccurate reason of on-the-spot test, carries out respective handling.
(6) test and the adjustment of the assemblage gap H value of speed regulator and governor pilot valve group
See Fig. 1,, speed regulator 12 is fastened on the main shaft 3 of proving installation, again governor pilot valve group 13 is installed in the front end of speed regulator, certain spacing is arranged between the two, be assemblage gap H value by joint flange 11.Add displacement transducer 14 in the governor pilot valve group with the movable pulley back; Speed regulator is driven by main shaft by the buncher in the proving installation 1, and pumping plant 6 is gone up oil pipe 7,8 by 2 and supplied with the pressure oil that the governor pilot valve group provides declared working condition.Energising, buncher 1, by the main shaft of proving installation, the rotating speed of control speed regulator raises, the speed governing piece moves, the governor pilot valve group with movable pulley also along with the same moved further of speed governing piece; When the stroke with movable pulley reaches one regularly, open oil drain out, supplementary protection begins action, and the supplementary protection oil pressure is instantaneous simultaneously lets out, and shows by tensimeter, writes down the rotating speed of this moment.According to the inverse relation of rotating speed and assemblage gap H value, can adjust and determine suitable assemblage gap H value, guarantee that supplementary protection is in the specified action range of speeds.
The utility model compared with prior art, the testing arrangement that it and electrical power control cabinet, pumping plant form can Finish easily: the characteristic test of (1) speed regulator; (2) speed regulator is just with the test of oil spout distortion; (3) test and the adjustment of critical protector action rotating speed; (4) movement test of critical protector bump; (5) comparison of emergency trip tachometer test; (6) fixing H of speed regulator and governor pilot valve group Test and the multi-task such as adjustment, can eliminate the defective of associated adjustment, security personnel's parts, reduce or avoid generating The loss of factory.
Claims (2)
1, a kind of Steam Turhine Adjustment security personnel components test unit, it is characterized in that: oil pipe and the scavenge pipe gone up with pressure arranged in the test box, magnetoresistive transducer and displacement transducer are arranged in the test box, promote the main shaft that rotating speed is used simultaneously in addition, main shaft drives by buncher, and joint flange is arranged on the main shaft.
2, press claims 1 described Steam Turhine Adjustment security personnel components test unit, it is characterized in that: have two to go up oil pipe and a scavenge pipe in the test box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01211867U CN2470815Y (en) | 2001-02-28 | 2001-02-28 | Steam turbine adjusting-safety parts testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN01211867U CN2470815Y (en) | 2001-02-28 | 2001-02-28 | Steam turbine adjusting-safety parts testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2470815Y true CN2470815Y (en) | 2002-01-09 |
Family
ID=33631176
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01211867U Expired - Lifetime CN2470815Y (en) | 2001-02-28 | 2001-02-28 | Steam turbine adjusting-safety parts testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2470815Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593549A (en) * | 2016-12-02 | 2017-04-26 | 广东核电合营有限公司 | Handling method for abnormal rotation speed adjustment of auxiliary water feeding turbine of nuclear power station |
| CN113740093A (en) * | 2021-08-26 | 2021-12-03 | 河北省瑞兆激光机电设备再制造产业技术研究院 | Method for testing critical speed of crisis fracture |
| CN114459741A (en) * | 2021-09-02 | 2022-05-10 | 福建福清核电有限公司 | Off-line calibration method for mechanical flyweight of pneumatic pump |
-
2001
- 2001-02-28 CN CN01211867U patent/CN2470815Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593549A (en) * | 2016-12-02 | 2017-04-26 | 广东核电合营有限公司 | Handling method for abnormal rotation speed adjustment of auxiliary water feeding turbine of nuclear power station |
| CN113740093A (en) * | 2021-08-26 | 2021-12-03 | 河北省瑞兆激光机电设备再制造产业技术研究院 | Method for testing critical speed of crisis fracture |
| CN114459741A (en) * | 2021-09-02 | 2022-05-10 | 福建福清核电有限公司 | Off-line calibration method for mechanical flyweight of pneumatic pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20110228 Granted publication date: 20020109 |