CN105928709A - Steam turbine set emergency governor test device - Google Patents
Steam turbine set emergency governor test device Download PDFInfo
- Publication number
- CN105928709A CN105928709A CN201610256766.5A CN201610256766A CN105928709A CN 105928709 A CN105928709 A CN 105928709A CN 201610256766 A CN201610256766 A CN 201610256766A CN 105928709 A CN105928709 A CN 105928709A
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- CN
- China
- Prior art keywords
- flyball
- governor
- breaker
- steam turbine
- crisis
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- 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.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/003—Arrangements for testing or measuring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/02—Shutting-down responsive to overspeed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Turbines (AREA)
Abstract
The invention relates to a steam turbine set emergency governor test device comprising an emergency governor; a variable-frequency motor of which the power output end is connected with the rotor of the emergency governor and drives the emergency governor to rotate, wherein the variable-frequency motor and the emergency governor are connected through a fixing device; a rotating speed measuring device which records rotating speed of the variable-frequency motor in real time; a fly ball motion sensor which monitors the fly ball fly-out motion of the emergency governor; and a controller which is connected with the variable-frequency motor, the rotating speed measuring device and the fly ball motion sensor.
Description
Technical field
The present invention relates to a kind of Steam Turbine emergency governor, overspeed governor test device.
Background technology
Emergency governor, overspeed governor is a set of mechanical overspeed protection device of steam turbine, and its effect is to realize emergency shutdown when there is hypervelocity, protects unit safety operation.Emergency governor, overspeed governor flyball is had an effect after the speed of mainshaft reaches prescribed limit; realize shutting down; emergency governor, overspeed governor flyball action rotating speed can be changed by adjusting emergency governor, overspeed governor spring clamp force, eventually through adjusting emergency governor, overspeed governor flyball action rotating speed, it is achieved emergency shutdown during Steam Turbine Over-speed Accident.
It can thus be appreciated that, emergency governor, overspeed governor is last one barrier preventing Turbo-generator Set from exceeding the speed limit, its duty is the most well directly connected to the equipment safety of Turbo-generator Set main frame, and turbine speed for initiating trip is again the key point that its duty is the best.
The test of existing turbine speed for initiating trip needs to be installed on rotor; by red switch to rated speed measurement carried out above; if its action rotating speed is undesirable; then need unit after making gate stop-start, car of stopping quotation on the exchange, to take off front case dismounting emergency governor, overspeed governor to be adjusted; repeated multiple times need take a significant amount of time, and boiler at low load runs and is likely to consume great amount of fuel oil.
Because above-mentioned defect, the design people, the most in addition research and innovation, to founding a kind of Steam Turbine emergency governor, overspeed governor test device so that it is have more the value in industry.
Summary of the invention
For solving above-mentioned technical problem, it is an object of the invention to provide a kind of safe and reliable, accuracy is high, and the Steam Turbine emergency governor, overspeed governor test device of cost savings.
Steam Turbine emergency governor, overspeed governor of the present invention test device, including:
Clutch end is connected with crisis breaker rotor, drives the frequency conversion motor that described crisis breaker rotates, described frequency conversion motor, crisis breaker to be connected by fixing device；
The rotation-speed measuring device of frequency conversion motor rotating speed described in real time record；The flyball of monitoring crisis breaker flies out the flyball action sensor of action；
And; the controller that described frequency conversion motor, rotation-speed measuring device, flyball action sensor connect; described frequency conversion motor controls to drive described crisis breaker to rotate with different rotating speeds by controller; when described flyball action sensor monitor flyball fly out time; described controller obtains the rotating speed of the motor of rotation-speed measuring device record, and described controller controls frequency conversion motor and stops operating.
Preferably, described flyball action sensor is that throttle is interdicted in crisis.
Further; described fixing device includes breaker connecting portion and motor coupling portion; described breaker connecting portion is screw shell structure; the female thread suitable with the external screw thread in breaker rotating shaft it is provided with in described screw shell; crisis breaker is threadeded with described fixing device; the axial milling of described motor coupling portion is by keyway, and the rotary shaft of described frequency conversion motor is bonded with described fixing device.
In a specific embodiment; described crisis breaker includes connector and flyball; it is formed with installation cavity in described flyball; being installed on lining in described installation cavity, connecting in described lining has spring, one end of described flyball to be provided with sliding sleeve and nut; it is provided with regulating sleeve between described flyball inwall and lining; described flyball is provided with block relative to the other end of sliding sleeve, described block is provided with securing member, is detachably fixed connection by securing member between described flyball and block.
Further, at least four screwed holes are set on described block, the through hole all arranged it is provided with screwed hole one_to_one corresponding on described flyball, described securing member is fed through through hole and screwed hole successively and securing member is all threadeded with block and flyball, described lining is riveted in flyball, and described lining offers groove, and described groove connects with installation cavity, being provided with limited block in described groove, described limited block is made up of elastomeric material.
In a specific embodiment, also include the controller being connected with described frequency conversion motor, rotation-speed measuring device, flyball action sensor, described rotation-speed measuring device includes the enumerator that the encoder being arranged on described frequency conversion motor power output shaft is connected with described encoder, described enumerator is connected with controller, described flyball action sensor is proximity switch, and described controller is single-chip microcomputer and the display screen being connected with described single-chip microcomputer.
In a specific embodiment, described rotation-speed measuring device includes two set photoelectric measure speeding sensor and accessory cables thereof.
Especially, described display screen is for touching display screen.
Further, also include supporting described fixing frequency conversion motor and the support of photoelectric sensor.
By such scheme, the present invention at least has the advantage that
1, Steam Turbine emergency governor, overspeed governor of the present invention test device; frequency conversion motor instead of the rotor of Turbo-generator Set; crisis breaker is in the installation site tested on device and action; accurate simulation installation site in Turbo-generator Set and operating state; therefore on this test device, carry out the action verification of crisis breaker, the verification on steam turbine can be substituted in.
2, Steam Turbine emergency governor, overspeed governor of the present invention test device, it is ensured that just can disposably put in place during test run on crisis breaker, simple to operation, it is simple to observe, thus safe and reliable.
3, Steam Turbine emergency governor, overspeed governor of the present invention test device, passes through controller, it is achieved that speed automation, digital independent automatization and the accuracy of experimental data, decreases equipment experiment number, improve work efficiency.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, and can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinateAccompanying drawingAfter describing in detail such as.
Accompanying drawing explanation
Figure 1It it is the structural representation of Steam Turbine emergency governor, overspeed governor of the present invention test device embodiment 1Figure；
Figure 2It it is the structural representation of the fixing device of Steam Turbine emergency governor, overspeed governor of the present invention test device embodiment 2Figure；
Figure 3It isFigure 2Left viewFigure；
Figure 4It isFigure 2A-A regardFigure；
Figure 5It it is the structural representation of the crisis breaker of Steam Turbine emergency governor, overspeed governor of the present invention test device embodiment 3Figure；
Figure 6It isFigure 5In A partially schematicFigure；
Figure 7It isFigure 5In B partially schematicFigure。
Detailed description of the invention
Below in conjunction withAccompanying drawingAnd embodiment, the detailed description of the invention of the present invention is described in further detail.Following example are used for illustrating the present invention, but are not limited to the scope of the present invention.
Embodiment 1
As Figure 1Shown in, the present embodiment Steam Turbine emergency governor, overspeed governor test device, can ensure that steam turbine action rotating speed is accurate, protect steam turbine main process equipment safety, including:
Crisis breaker 4；
Clutch end is connected with crisis breaker rotor, drives the frequency conversion motor 5 that described crisis breaker rotates, described frequency conversion motor, crisis breaker to be connected by fixing device 3；
The rotation-speed measuring device 2 of frequency conversion motor rotating speed described in real time record；
The flyball of monitoring crisis breaker flies out the flyball action sensor 1 of action, and described flyball action sensor is that throttle is interdicted in crisis.
And; the controller that described frequency conversion motor, rotation-speed measuring device, flyball action sensor connect; described frequency conversion motor controls to drive described crisis breaker to rotate with different rotating speeds by controller; when described flyball action sensor monitor flyball fly out time; described controller obtains the rotating speed of the motor of rotation-speed measuring device record, and described controller controls frequency conversion motor and stops operating.
In the present embodiment, during use, controller controls frequency conversion motor and drives crisis breaker to rotate at different rates；
After the rotating speed of crisis breaker reaches the rotating speed set, flyball action sensor detects that flyball flies out；
When acquisition flyball flies out, obtain the rotating speed of motor speed measurement device record frequency conversion motor, obtain the rotating speed of crisis breaker；
When the rotating speed of crisis breaker is not in the range of regulation rotary speed threshold value, then readjusts the spring of crisis breaker, repeat above-mentioned steps, until the speed of crisis breaker reaches regulation rotating speed；
When the speed of crisis breaker is in threshold range, then this emergency governor, overspeed governor test passes.
The present embodiment, is devised a special device for testing breaker monitoring, instead of the rotor of Turbo-generator Set, adjusted by frequency conversion motor, and start and stop are convenient reliably；Can real time record emergency governor, overspeed governor rotating speed and action rotating speed；Emergency governor, overspeed governor easy installation and removal is quick.
Embodiment 2
Such as figure 2 Extremely 4Shown in, the present embodiment Steam Turbine emergency governor, overspeed governor test device, on the basis of embodiment 1, described fixing device includes breaker connecting portion and motor coupling portion, described breaker connecting portion is screw shell structure, is provided with the female thread suitable with the external screw thread in breaker rotating shaft in described screw shell, and described motor coupling portion includes key tube-in-tube structure, being provided with and keyway arrangements in described key sleeve, described motor power output shaft is bolted with described motor coupling portion.
In the present embodiment, fixture structure is reasonable, installation, convenient disassembly, and security performance is high.
Embodiment 3
Such as figure 5 Extremely 7Shown in, the present embodiment Steam Turbine emergency governor, overspeed governor test device, on the basis of embodiment 2, described emergency governor, overspeed governor, including connector (In figureDo not mark) and flyball 11, be formed with installation cavity 14 in described flyball 11, in described installation cavity 14, be installed on lining 16, connect in described lining 16 have spring 17, one end of described flyball 11 be provided with sliding sleeve 5 and nut (In figurenullDo not mark)，It is provided with regulating sleeve 18 between described flyball 1 inwall and lining 16，The other end of the described relative sliding sleeve 5 of flyball 1 is provided with block 12，It is provided with securing member 10 on described block 12，It is detachably fixed connection by securing member 10 between described flyball 11 and block 12，At least four screwed holes are set on described block 12，The through hole all arranged it is provided with screwed hole one_to_one corresponding on described flyball 1，Described securing member 10 is fed through through hole and screwed hole successively and securing member 10 is all threadeded with block 12 and flyball 11，Described lining 16 is riveted in flyball，Riveting is technology well-known in the art，Therefore not to repeat here，Groove 13 is offered on described lining 6，Described groove 13 connects with installation cavity 4，It is provided with limited block 19 in described groove 13，Described limited block 19 is made up of elastomeric material.
nullAccording to said structure，When emergency governor, overspeed governor runs，When the centrifugal force suffered by flyball 1 is more than the acting force of the spring of self，Rotating when, flyball 11 flies out to clash into and breaks off relations，Serve the effect of blocking，When flyball 11 clashes into，Block 12 directly contacts with breaking off relations，Block 12 serves protective effect，Directly contacting between avoiding flyball 11 and breaking off relations，Prevent the abrasion that flyball 11 causes due to shock，Make to dismount enhanced convenience by securing member 10 such as bolt 10 or screw 10 or rivet 10 simultaneously，In the present embodiment, securing member is preferably screw 10，On flyball 1 inwall, riveting has lining 16 simultaneously，Groove 3 it is provided with on lining 16，Lay limited block 19 in groove 3 and serve certain position-limiting action when flyball 11 moves，Limited block 19 coordinates with groove 13，The outer wall of the limited block 19 being made up of elastomeric material and the inwall laminating of groove 13，Prevent the direct shock of lining 16 and flyball 11，Serve position-limiting action and protective effect，Use also without the renewal part regular because of abrasion.
Simultaneously, flyball 11 arranges lining 16 and spring 17 is in order to flyball 1 plays an effect limited, when rotating speed reaches certain critical point, flyball 1 can be thrown out of under the influence of centrifugal force thus realize blocking effect, block 12 carries out being detachably fixed being connected with flyball 11 by screw 10, during installation, by screw 10 the most threaded after be fed through screwed hole (In figureDo not mark) and through hole (In figureDo not mark), block 12 is arranged on flyball 11, when changing dismounting, screw 10 is selected in turn outside block 12, now block 12 is simply connected with conflicting between flyball 11, can will separate between block 12 and flyball 11, replace with new block 12, mounting means is as previously described, therefore not to repeat here, therefore, it is connected by screw the dismounting facilitating block 12, when block 12 due to shock repeatedly make the surface of block 12 occur abrasion in turn result in the regulation of emergency governor, overspeed governor inaccurate time, the block 12 at flyball 11 top can be disassembled and be replaced, make emergency governor, overspeed governor accuracy when regulation higher.
Rotation-speed measuring device includes two set photoelectric measure speeding sensor and accessory cables thereof.Two set speed measuring device rotating speeds compare mutually, prevent sensor misalignment, the problem affecting certainty of measurement；Photoelectric measure speeding sensor measures the keyway in fixing device, and then calculates the rotating speed of crisis breaker；Photoelectric sensor is fixed on the position fixing with fixing device distance by support.
In the various embodiments described above, the method for testing of Steam Turbine emergency governor, overspeed governor test device, it is characterised in that including:
S1 frequency conversion motor drives crisis breaker to rotate at different rates；
After the rotating speed of S2 crisis breaker reaches the rotating speed set, flyball action sensor detects that flyball flies out；
When S3 acquisition flyball flies out, obtain the rotating speed of motor speed measurement device record frequency conversion motor, obtain the rotating speed of crisis breaker；
S4.1 when the rotating speed of crisis breaker is not in the range of regulation rotary speed threshold value, then readjusts the spring of crisis breaker, repeats step S1 to S3, until the speed of crisis breaker reaches regulation rotating speed；
S4.2 when the speed of crisis breaker is in threshold range, then this emergency governor, overspeed governor test passes.
The above is only the preferred embodiment of the present invention; it is not limited to the present invention; should be understood that; for those skilled in the art; on the premise of without departing from the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.
Claims (9)
1. a Steam Turbine emergency governor, overspeed governor test device, it is characterised in that including:
Clutch end is connected with crisis breaker rotor, drives described crisis breaker to rotate
Frequency conversion motor, described frequency conversion motor, crisis breaker are connected by fixing device；
The rotation-speed measuring device of frequency conversion motor rotating speed described in real time record；Monitoring crisis breaker
Flyball flies out the flyball action sensor of action；
And, described frequency conversion motor, rotation-speed measuring device, flyball action sensor connect
Controller, described frequency conversion motor controls to drive described crisis to hide with different rotating speeds by controller
Disconnected device rotates, when described flyball action sensor monitor flyball fly out time, described controller obtains
Taking the rotating speed of the motor of rotation-speed measuring device record, described controller controls frequency conversion motor and stops turning
Dynamic.
Steam Turbine emergency governor, overspeed governor the most according to claim 1 test device, it is special
Levying and be, described flyball action sensor is that throttle is interdicted in crisis.
Steam Turbine emergency governor, overspeed governor the most according to claim 1 test device, it is special
Levying and be, described fixing device includes breaker connecting portion and motor coupling portion, described screening
Disconnected device connecting portion is screw shell structure, be provided with in described screw shell with in breaker rotating shaft
The female thread that external screw thread is suitable, crisis breaker is threadeded with described fixing device, described
The axial milling of motor coupling portion is by keyway, the rotary shaft of described frequency conversion motor and described fixing device key
Connect.
Steam Turbine emergency governor, overspeed governor the most according to claim 1 test device, it is special
Levying and be, described crisis breaker includes connector and flyball, is formed with installation in described flyball
Chamber, is installed on lining in described installation cavity, connecting in described lining has spring, described flyball
One end is provided with sliding sleeve and nut, is provided with regulating sleeve between described flyball inwall and lining,
Described flyball is provided with block relative to the other end of sliding sleeve, and described block is provided with securing member,
It is detachably fixed connection by securing member between described flyball and block.
Steam Turbine emergency governor, overspeed governor the most according to claim 4 test device, it is special
Levy and be, described block arranges at least four screwed holes, described flyball is provided with all with
Screwed hole one_to_one corresponding arrange through hole, described securing member be fed through successively through hole and screwed hole and
Securing member is all threadeded with block and flyball, and described lining is riveted in flyball, described lining
On offer groove, described groove connects with installation cavity, is provided with limited block in described groove,
Described limited block is made up of elastomeric material.
Steam Turbine emergency governor, overspeed governor the most according to claim 1 test device, it is special
Levying and be, described rotation-speed measuring device includes being arranged on described frequency conversion motor power output shaft
The enumerator that encoder is connected with described encoder, described enumerator is connected with controller, institute
Stating flyball action sensor is proximity switch, described controller be single-chip microcomputer and with described monolithic
The display screen that machine connects.
Steam Turbine emergency governor, overspeed governor the most according to claim 1 test device, it is special
Levying and be, described rotation-speed measuring device includes two set photoelectric measure speeding sensor and accessory cables thereof.
Steam Turbine emergency governor, overspeed governor the most according to claim 6 test device, it is special
Levying and be, described display screen is for touching display screen.
Steam Turbine emergency governor, overspeed governor the most according to claim 6 test device, it is special
Levy and be, also include supporting described fixing frequency conversion motor and the support of photoelectric sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256766.5A CN105928709A (en) | 2016-04-22 | 2016-04-22 | Steam turbine set emergency governor test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610256766.5A CN105928709A (en) | 2016-04-22 | 2016-04-22 | Steam turbine set emergency governor test device |
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| CN105928709A true CN105928709A (en) | 2016-09-07 |
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| CN201610256766.5A Pending CN105928709A (en) | 2016-04-22 | 2016-04-22 | Steam turbine set emergency governor test device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314903A (en) * | 2017-08-18 | 2017-11-03 | 嘉利特荏原泵业有限公司 | Steam turbine dropout body overspeed trip analogue means |
| CN111537206A (en) * | 2020-04-25 | 2020-08-14 | 哈尔滨汽轮机厂有限责任公司 | Simulated overspeed protection test device and method |
| CN112082743A (en) * | 2020-07-30 | 2020-12-15 | 中广核核电运营有限公司 | Overspeed protection test bed and overspeed protection test method |
| CN112665835A (en) * | 2020-11-12 | 2021-04-16 | 中广核核电运营有限公司 | Testing device and system for overspeed protection device |
| 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 |
| CN114352361A (en) * | 2022-01-24 | 2022-04-15 | 重庆江增船舶重工有限公司 | Overspeed test tool for steam turbine emergency breaker assembly and use method thereof |
| 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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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314903A (en) * | 2017-08-18 | 2017-11-03 | 嘉利特荏原泵业有限公司 | Steam turbine dropout body overspeed trip analogue means |
| CN111537206A (en) * | 2020-04-25 | 2020-08-14 | 哈尔滨汽轮机厂有限责任公司 | Simulated overspeed protection test device and method |
| CN112082743A (en) * | 2020-07-30 | 2020-12-15 | 中广核核电运营有限公司 | Overspeed protection test bed and overspeed protection test method |
| CN112665835A (en) * | 2020-11-12 | 2021-04-16 | 中广核核电运营有限公司 | Testing device and system for overspeed protection device |
| 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 |
| CN113740093B (en) * | 2021-08-26 | 2024-07-23 | 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 fracture speed |
| 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 |
| CN114352361A (en) * | 2022-01-24 | 2022-04-15 | 重庆江增船舶重工有限公司 | Overspeed test tool for steam turbine emergency breaker assembly and use method thereof |
| CN114352361B (en) * | 2022-01-24 | 2023-10-27 | 重庆江增船舶重工有限公司 | Overspeed test tool for steam turbine critical breaker assembly and using method of overspeed test tool |
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