CN107314903B - Overspeed trip simulator for steam turbine trip body - Google Patents
Overspeed trip simulator for steam turbine trip body Download PDFInfo
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- CN107314903B CN107314903B CN201710714223.8A CN201710714223A CN107314903B CN 107314903 B CN107314903 B CN 107314903B CN 201710714223 A CN201710714223 A CN 201710714223A CN 107314903 B CN107314903 B CN 107314903B
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- tripping
- connecting rod
- connection rod
- steam turbine
- trip
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- 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
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Control Of Turbines (AREA)
Abstract
The invention discloses an overspeed tripping simulation device for a steam turbine tripping body, which comprises a bottom plate, a tripping connecting rod and a resetting connecting rod, wherein a high-speed variable-frequency motor is arranged on the bottom plate and drives the tripping body to rotate, the middle part of the tripping connecting rod is movably hinged on a first fixing frame through a shaft, a torsion spring is arranged on the shaft, a position sensor is correspondingly arranged on the first fixing frame and corresponds to the shaft, a detecting rod is arranged at one end of a tripping pin position of the tripping body on the tripping connecting rod, a first bump block is arranged at the other end of the tripping connecting rod, a second bump block corresponding to the first bump block is arranged at one end of the resetting connecting rod, a tension spring is arranged at the middle part of the resetting connecting rod and is connected with a tension spring fixing frame, and the other end of the resetting connecting rod is movably hinged with the resetting connecting rod fixing frame. The invention realizes that the tripping rotating speed is adjusted well before the tripping body is assembled on the steam turbine, reduces the steam consumption for debugging the steam turbine, saves the adjusting time, and has the remarkable effects of energy conservation, time conservation and high efficiency.
Description
Technical Field
The invention relates to the technical field of steam turbines, in particular to a turbine trip body overspeed trip simulation device.
Background
The trip rotating speed of the steam turbine is taken as an important parameter for protecting the safe operation of the steam turbine, and is an important index in the mechanical operation test of the steam turbine; the tripping function is realized by installing a tripping body on the steam turbine, and timely tripping when the rotating speed of the steam turbine exceeds the regulated safe rotating speed, thereby ensuring the safe operation of the steam turbine; the currently adopted overspeed trip test method is that when the turbine is installed, that is, after the trip body is assembled on the turbine, a mechanical operation test is carried out, the pretightening force of the trip pin spring is adjusted by adjusting an adjusting gasket or an adjusting nut in the trip body, so that the trip pin spring is adjusted to be in a specified trip rotating speed range. In the process of adjusting the tripping rotation speed, the steam turbine needs to be subjected to the processes of starting, accelerating, overspeed, tripping, decelerating and stopping, and each machine needs to be adjusted for a plurality of times on average to achieve the ideal effect, so that more additional time, steam and related public resources are consumed in the process. In addition, the release body is assembled in the bearing body of the steam turbine, so that the problem of inconvenient operation and the like also exists during adjustment.
Disclosure of Invention
In view of the defects existing in the prior art, the invention aims to provide the overspeed trip simulation device for the steam turbine trip body, which has the advantages of simple structure, simplicity, convenience and rapidness in operation, breaks through the existing adjustment mode of adjusting the trip rotating speed by assembling the trip body on the steam turbine, has obvious energy conservation, time saving adjustment and high efficiency, and is realized by adopting the following technical scheme: the overspeed tripping simulation device for the steam turbine tripping body comprises a bottom plate 1, and further comprises a tripping connecting rod 7 and a resetting connecting rod 10, wherein a high-speed variable frequency motor 2 is installed on the bottom plate 1, the high-speed variable frequency motor 2 drives a tripping body 6 to rotate, the middle part of the tripping connecting rod 7 is movably hinged to a first fixing frame 8 through a shaft 18, a torsion spring 9 is arranged on the shaft 18, a position sensor 19 is arranged on the first fixing frame 8 corresponding to the shaft 18, a detection rod 701 is installed at one end of the tripping connecting rod 7, which is positioned at the tripping pin position of the tripping body 6, a first bump block 702 is arranged at the other end of the tripping connecting rod 7, a second bump block 101 corresponding to the first bump block 702 is arranged at one end of the resetting connecting rod 10, a tension spring 15 is arranged at the middle part of the resetting connecting rod 10, the tension spring 15 is connected with a tension spring fixing frame 11, and the other end of the resetting connecting rod 10 is movably hinged to a resetting connecting rod fixing frame 12. Through the arrangement, when the simulation device works, after the high-speed variable frequency motor is started, the high-speed variable frequency motor drives the tripping body to do rotary motion, the high-speed variable frequency motor is continuously accelerated through adjusting the frequency converter for controlling the rotating speed of the high-speed variable frequency motor, when the tripping body reaches the tripping rotating speed, the tripping pin arranged in the tripping body flies out due to the effect of centrifugal force and impacts the detection rod to drive the tripping connecting rod and the shaft to rotate, the position sensor 19 is triggered, the resetting connecting rod is released at the moment, the position of the tripping connecting rod is locked by downward rotation under the action of the tension spring, the position sensor simultaneously sends out a signal to enable the frequency converter to stop outputting, and meanwhile, the frequency converter keeps the rotating speed of the motor at the moment, so that the tripping rotating speed of the tripping body is obtained; and then adjusting an adjusting gasket or an adjusting nut in the tripping body to adjust the pretightening force of the tripping pin spring according to the rotating speed value, and then performing simulation test until the rotating speed value is adjusted to the regulated tripping rotating speed value.
According to the invention, a rotating speed signaling disc 3 is arranged on a rotating shaft of the high-speed variable frequency motor 2, a shaft sleeve 4 and a shaft coupler 5 are arranged on the rotating shaft of the high-speed variable frequency motor 2, the tripping body 6 is connected with the shaft coupler 5, a support 16 is arranged below the rotating speed signaling disc 3, and a rotating speed sensor 17 is arranged on the support 16. Through this setting, the steam turbine tripping body can be convenient and fast with the motor is associative, has improved test adjustment efficiency, through the cooperation of signaling disc and rotation speed sensor and the rotational speed recorder who links to each other with rotation speed sensor, can further real-time display and record the rotational speed of tripping body, also play the effect of backing up for the rotational speed value of converter, further improve the accuracy to the test of tripping rotational speed.
According to the invention, the tension spring fixing frame 11 is further provided with the limiting ejector rod 14, through the arrangement, after the tripping body trips, the reset connecting rod is released and rotates downwards under the action of the tension spring, when the trip body reaches the top end of the limiting rod, the trip connecting rod is propped against the limiting action of the limiting rod, so that the position of the trip connecting rod is locked until the reset connecting rod is lifted, the trip connecting rod rotates clockwise under the action of the torsion spring, and when the first bump block is jointed with the second bump block, the simulation device completes resetting and is ready for next simulation.
The invention is further provided with a shield 13 arranged on the bottom plate 1. Through this setting, the security of this analogue means is further improved.
The invention has the beneficial effects that: the overspeed tripping simulation device for the steam turbine tripping body is simple in structure, simple and convenient to operate and high in efficiency, breaks through the adjustment mode that the tripping rotating speed is adjusted only after the tripping body is assembled on the steam turbine, and the tripping rotating speed is adjusted directly before the tripping body is assembled on the steam turbine, so that the steam consumption for debugging the steam turbine is reduced, the adjustment time is saved, and the effects of remarkably saving energy, time and efficiency are achieved.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Fig. 2 is a top view of the structure of the present invention.
Detailed Description
As shown in fig. 1 and 2: the overspeed tripping simulation device for the steam turbine tripping body comprises a bottom plate 1, and further comprises a tripping connecting rod 7 and a resetting connecting rod 10, wherein a high-speed variable frequency motor 2 is arranged on the bottom plate 1, the high-speed variable frequency motor 2 is connected with a frequency converter (not shown), the high-speed variable frequency motor 2 drives the tripping body 6 to rotate, the middle part of the tripping connecting rod 7 is movably hinged on a first fixing frame 8 through a shaft 18, a torsion spring 9 is arranged on the shaft 18, a position sensor 19 is arranged on the first fixing frame 8 corresponding to the shaft 18, the position sensor 19 is connected with an electric control system (not shown), a stop output signal is sent to the frequency converter (not shown), a detection rod 701 is arranged at one end of a tripping pin position of the tripping connecting rod 6, a first bump block 702 is arranged at the other end of the tripping connecting rod 7, a second bump block 101 corresponding to the first bump block 702 is arranged at one end of the resetting connecting rod 10, a tension spring 15 is arranged in the middle of the resetting connecting rod 10, the tension spring 15 is connected with a tension spring fixing frame 11, and the other end of the resetting connecting rod 10 is movably hinged with a resetting fixing frame 12.
As optimization, a rotating speed signaling disc 3 is arranged on a rotating shaft of the high-speed variable-frequency motor 2, a shaft sleeve 4 and a shaft coupler 5 are arranged on the rotating shaft of the high-speed variable-frequency motor 2, a tripping body 6 is connected with the shaft coupler 5, a support 16 is arranged below the rotating speed signaling disc 3, and a rotating speed sensor 17 is arranged on the support 16.
As an optimization, the stretching spring fixing frame 11 is also provided with a limiting ejector rod 14.
Preferably, a shield 13 is also mounted on the base plate 1.
Claims (4)
1. Overspeed trip simulation device of steam turbine trip body, including bottom plate (1), its characterized in that: still include tripping connection rod (7), reset connection rod (10), install high-speed variable frequency motor (2) on bottom plate (1), high-speed variable frequency motor (2) drive tripping body (6) rotate, tripping connection rod (7) middle part is through axle (18) activity hinge joint on mount one (8), be equipped with torsional spring (9) on axle (18), be equipped with position sensor (19) on mount one (8) with axle (18) correspondence, the detection pole (701) is installed to the one end that is located the tripping pin position of tripping body (6) on tripping connection rod (7), the other end of tripping connection rod (7) is equipped with bump piece one (702), reset connection rod (10) one end is equipped with bump piece two (101) that correspond with bump piece one (702), reset connection rod (10) middle part is equipped with extension spring (15), extension spring (15) are connected with extension spring mount (11), reset connection rod (10) other end and reset connection rod (12) activity hinge joint.
2. The turbine trip unit overspeed trip simulation apparatus of claim 1, wherein: the rotating shaft of the high-speed variable frequency motor (2) is provided with a rotating speed signaling disc (3), the rotating shaft of the high-speed variable frequency motor (2) is provided with a shaft sleeve (4) and a shaft coupler (5), the tripping body (6) is connected with the shaft coupler (5), a support (16) is arranged below the rotating speed signaling disc (3), and the support (16) is provided with a rotating speed sensor (17).
3. The turbine trip unit overspeed trip simulation apparatus of claim 1, wherein: and the stretching spring fixing frame (11) is also provided with a limiting ejector rod (14).
4. The turbine trip unit overspeed trip simulation apparatus of claim 1, wherein: a protective cover (13) is also arranged on the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714223.8A CN107314903B (en) | 2017-08-18 | 2017-08-18 | Overspeed trip simulator for steam turbine trip body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710714223.8A CN107314903B (en) | 2017-08-18 | 2017-08-18 | Overspeed trip simulator for steam turbine trip body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107314903A CN107314903A (en) | 2017-11-03 |
| CN107314903B true CN107314903B (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710714223.8A Active CN107314903B (en) | 2017-08-18 | 2017-08-18 | Overspeed trip simulator for steam turbine trip body |
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| CN (1) | CN107314903B (en) |
Citations (7)
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| FR2605454A1 (en) * | 1986-10-20 | 1988-04-22 | Merlin Gerin | Control mechanism for a miniature electric circuit breaker with automatic reset |
| KR20020047887A (en) * | 2000-12-14 | 2002-06-22 | 이구택 | Testing device of preventive overspeed equipments in stem turbine |
| CN101923992A (en) * | 2010-08-20 | 2010-12-22 | 上海电科电器科技有限公司 | Control and protection switch operating mechanism for electrical appliances |
| CN102360993A (en) * | 2011-10-11 | 2012-02-22 | 上海澳瑞斯工控电子有限公司 | Remote controller for controlling breaker/shut-off switch to switch on and off |
| CN104810218A (en) * | 2015-05-13 | 2015-07-29 | 贵州长征开关制造有限公司 | Combined electromagnetic tripping device for universal circuit breaker |
| CN205808695U (en) * | 2016-06-29 | 2016-12-14 | 大唐珲春发电厂 | Steam turbine crisis breaker reset signal device |
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| GB426200A (en) * | 1932-09-20 | 1935-03-18 | British Thomson Houston Co Ltd | Improvements in and relating to tripping mechanism for electric circuit-breakers |
| JP3613360B2 (en) * | 1996-04-23 | 2005-01-26 | 富士電機システムズ株式会社 | Turbine emergency governor oil trip test equipment |
| US7194865B2 (en) * | 2004-08-30 | 2007-03-27 | Compressor Controls Corporation | Turbine overspeed protection |
| US7716971B2 (en) * | 2006-10-20 | 2010-05-18 | General Electric Company | Method and system for testing an overspeed protection system during a turbomachine shutdown sequence |
| CN201651525U (en) * | 2010-03-25 | 2010-11-24 | 费希尔久安输配设备(成都)有限公司 | Tripping return device of fuel gas safe cutting valve |
| CN201985050U (en) * | 2011-01-19 | 2011-09-21 | 西安交通大学 | Bounce-proof device of circuit breaker |
| CN204942721U (en) * | 2015-08-31 | 2016-01-06 | 成都伦慈仪表有限公司 | Cut-off valve is threaded off and resetting-mechanism |
| CN105424368B (en) * | 2015-12-12 | 2018-07-10 | 浙江杰特优动力机械有限公司 | A kind of flyball experimental rig and its test method |
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| CN207114188U (en) * | 2017-08-18 | 2018-03-16 | 嘉利特荏原泵业有限公司 | Steam turbine dropout body overspeed trip analogue means |
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2017
- 2017-08-18 CN CN201710714223.8A patent/CN107314903B/en active Active
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| FR2605454A1 (en) * | 1986-10-20 | 1988-04-22 | Merlin Gerin | Control mechanism for a miniature electric circuit breaker with automatic reset |
| KR20020047887A (en) * | 2000-12-14 | 2002-06-22 | 이구택 | Testing device of preventive overspeed equipments in stem turbine |
| CN101923992A (en) * | 2010-08-20 | 2010-12-22 | 上海电科电器科技有限公司 | Control and protection switch operating mechanism for electrical appliances |
| CN102360993A (en) * | 2011-10-11 | 2012-02-22 | 上海澳瑞斯工控电子有限公司 | Remote controller for controlling breaker/shut-off switch to switch on and off |
| CN104810218A (en) * | 2015-05-13 | 2015-07-29 | 贵州长征开关制造有限公司 | Combined electromagnetic tripping device for universal circuit breaker |
| CN205808695U (en) * | 2016-06-29 | 2016-12-14 | 大唐珲春发电厂 | Steam turbine crisis breaker reset signal device |
| CN106356264A (en) * | 2016-08-29 | 2017-01-25 | 天津市百利电气有限公司 | Tripping and resetting device of air circuit breaker controller |
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| Publication number | Publication date |
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| CN107314903A (en) | 2017-11-03 |
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