CN204556231U - Turbine governor valve valve rod performance test apparatus - Google Patents

Turbine governor valve valve rod performance test apparatus Download PDF

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Publication number
CN204556231U
CN204556231U CN201520095866.5U CN201520095866U CN204556231U CN 204556231 U CN204556231 U CN 204556231U CN 201520095866 U CN201520095866 U CN 201520095866U CN 204556231 U CN204556231 U CN 204556231U
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China
Prior art keywords
valve
valve rod
steam
connecting link
test
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Withdrawn - After Issue
Application number
CN201520095866.5U
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Chinese (zh)
Inventor
许静
倪敬
吴参
蒙臻
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Hangzhou Dianzi University
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Hangzhou Dianzi University
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Priority to CN201520095866.5U priority Critical patent/CN204556231U/en
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Abstract

The utility model discloses a kind of turbine governor valve valve rod performance test apparatus, comprise propulsion system, valve rod test mounting platform and test steam supply retracting device; Described propulsion system comprise motor, support, excentric shaft, reciprocating block slider, spring, the first rolling bearing and the second rolling bearing; Described valve rod test mounting platform comprises: link, body, valve rod, connecting link, Lower shaft sleeve, Upper shaft sleeve, nut, upper hold-down ring, anti-leak metallic bellows, steam (vapor) outlet, steam inlet, electromagnetic exciter, gland, the first bolt, displacement transducer, flow sensor, lower hold-down ring, connecting link nut, the second bolt, rotating ring, stationary ring and stud; Described test steam supply retracting device comprises steam generator, condenser, water pump, non-return valve and variable valve; The utility model can realize the performance test of different vibration valve rod.

Description

Turbine governor valve valve rod performance test apparatus
Technical field
The utility model relates to steam turbine, specifically turbine governor valve valve rod performance test apparatus.
Background technology
Variable valve is that the important vapour of joining of steam turbine performs original paper, is elevated regulates various inlet amount by regulating valve stem.Variable valve runs for a long time in temperature high-pressure steam environment, requires that valve has good sealing property, stability, in case valve high-quality steam is revealed, causes loss in efficiency, even security incident occurs.
In actual motion, flow-induced vibration is to valve rod, valve disc effect, often valve disc is caused to vibrate and finally cause valve disc and valve seat to decline serviceable life, valve rod itself vibrates and valve disc shake pass to valve rod and cause balance between valve rod and valve pocket to break, cause serious wear, cause quantity of steam to be revealed serious, cause servomotor to produce wear-out failure time serious, affect steam turbine and normally run.
Turbine governor valve stem wear and leakage have had a strong impact on steam turbine overall system performance, to study the performances such as the sealing of valve rod different structure under different operating mode, rubbing wear, vibration and lubrication mechanism, only lean on existing theoretical analysis to be far from being enough, experimental study is its very important research method.And the test unit of present turbine governor valve valve rod is still in technological gap, therefore designs and build the testing table that can carry out turbine governor valve valve rod performance test fast and there is extremely important meaning.
Summary of the invention
A kind of turbine governor valve valve rod performance test apparatus, comprises propulsion system, valve rod test mounting platform and test steam supply retracting device.
Described propulsion system comprise motor, support, excentric shaft, reciprocating block slider, spring, the first rolling bearing and the second rolling bearing;
One end of described excentric shaft is arranged on support by the first rolling bearing, and the other end is connected with the output shaft of motor; Have groove bottom reciprocating block slider, the second rolling bearing is fixed in the groove of reciprocating block slider by pin, and one end of spring is connected with the top of reciprocating block slider, and the other end of spring is placed on support, and rolling bearing is contacted with excentric shaft by spring-return power;
Described valve rod test mounting platform comprises: link, body, valve rod, connecting link, Lower shaft sleeve, Upper shaft sleeve, nut, upper hold-down ring, anti-leak metallic bellows, steam (vapor) outlet, steam inlet, electromagnetic exciter, gland, the first bolt, displacement transducer, flow sensor, lower hold-down ring, connecting link nut, the second bolt, rotating ring, stationary ring and stud;
Described body is connected with link by the upper and lower hold-down ring of the first bolt tightening, link is connected with support by the second bolt, link location adopts lower end to insert support, link lower center is opened hole and is provided slideway for reciprocating block slider simultaneously, strengthens body center pit and its center centring property;
Described valve rod is connected with reciprocating block slider by connecting link, and described connecting link is provided with connecting link nut, and connecting link adopts with connecting link nut and is threaded; Valve rod is arranged in body, and the two ends up and down of valve rod are respectively equipped with valve pocket, and upper valve sleeve compresses spacing by electromagnetic exciter, and lower end valve pocket compresses spacing by upper hold-down ring; No leakage corrugated tube upper end is fastening by upper hold-down ring and lower hold-down ring, and connecting link fastening nuts is passed through in lower end;
Described electromagnetic exciter adopts Electromagnetic Drive, and rotating ring is built in electromagnetic exciter, and stationary ring is solid in valve rod upper end by screwed tight.Electromagnetic exciter by gland adopt stud and body fastening; Gland has a through hole, in through hole, be provided with flow sensor, in described upper hold-down ring, be provided with displacement transducer;
Described body has a steam (vapor) outlet and a steam inlet;
Described test steam supply retracting device comprises steam generator, condenser, water pump, non-return valve and variable valve;
The outlet of described steam generator is connected with one end of variable valve, the other end of variable valve is connected with steam inlet, the import of steam generator is reclaimed delivery side of pump and is connected, the import of recovery pump is connected with the outlet of condenser, the import of condenser is connected with the outlet of non-return valve, and the entrance of non-return valve is connected with steam (vapor) outlet.
Principle of work: drive motor drives reciprocating block slider to reciprocatingly slide by excentric shaft, and valve rod connects synchronous to-and-fro movement in body by connecting link and reciprocating block slider, real-time Jiggled process during the work of analog regulation valve valve rod.Test different stroke reciprocating, adopt the excentric shaft changing different eccentric throw; For ensureing reciprocating block slider center and body center's centering, thus ensureing valve rod and body center's centering, reducing the test error brought because centering difference, adopting link lower end insertion support to position, while its center provide reciprocal slideway for reciprocating block slider.
The upper and lower two ends of valve rod and valve pocket mating area adopt and are arranged symmetrically with, and can realize single test and test valve rod performance for twice, test data is more accurate; Adopt metallic bellows not only can prevent from revealing, there is braking absorption simultaneously and connect vibration of bar, reduce itself vibrates and bring displacement error.
The high pressure steam that steam generation gas produces is imported and exported by steam and is circulated at internal body; Electromagnetic exciter stationary ring installs valve rod tail end, by regulating excited frequency simulation valve rod Vibration Condition, under realizing different steam parameter, different vibration frequency lower valve rod performance test research.Between valve rod and valve pocket, thickness of liquid film is by displacement sensor, and leakage rate is measured by flow sensor.
The beneficial effect of the utility model test unit:
1, can accurate comprehensive fast different structure valve stem seal under each different operating mode of test, rubbing wear, vibration performance parameter
2, this test unit conveniently can regulate vibration frequency, controls valve rod upheaval displacement, realizes the performance test of different vibration valve rod.
3, this test unit can be convenient for assembly, realizes multi-form test valve rod building block formula body, link.
Accompanying drawing explanation
Fig. 1 is the utility model regulating valve rod test unit.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As Fig. 1, a kind of turbine governor valve valve rod performance test apparatus, is characterized in that: comprise propulsion system, valve rod test mounting platform and test steam supply retracting device.
Described propulsion system comprise motor 1, support 7, excentric shaft 2, reciprocating block slider 3, spring 4, first rolling bearing 5 and the second rolling bearing 6;
One end of described excentric shaft 2 is arranged on support by the first rolling bearing 5, and the other end is connected with the output shaft of motor 1; Groove is had bottom reciprocating block slider 3, second rolling bearing 6 is fixed on by pin 8 in the groove of reciprocating block slider 3, one end of spring is connected with the top of reciprocating block slider 3, and the other end of spring is placed on support 7, and rolling bearing 6 is contacted with excentric shaft 2 by spring 4 restoring force;
Described valve rod test mounting platform comprises: link 9, body 10, valve rod 11, connecting link 12, Lower shaft sleeve 13, Upper shaft sleeve 14, nut 15, upper hold-down ring 16, anti-leak metallic bellows 17, steam (vapor) outlet 18, steam inlet 19, electromagnetic exciter 20, gland 21, first bolt 22, displacement transducer 28, flow sensor 29, lower hold-down ring 30, connecting link nut 31, second bolt 32, rotating ring 33, stationary ring 34 and stud 35;
Described body is tightened upper and lower hold-down ring 16,30 by the first bolt 22 and is connected with link 9, link 9 is connected with support 7 by the second bolt 32, link location adopts lower end to insert support, link 9 lower center is opened hole and is provided slideway for reciprocating block slider 3 simultaneously, strengthens body center pit and its center centring property;
Described valve rod 11 is connected with reciprocating block slider 3 by connecting link 12, and described connecting link is provided with connecting link nut 31, and connecting link 12 adopts with connecting link nut and is threaded; Valve rod 11 is arranged in body 10, and the two ends up and down of valve rod are respectively equipped with valve pocket, and upper valve sleeve 14 compresses spacing by electromagnetic exciter 20, and lower end valve 13 overlaps and compresses spacing by upper hold-down ring 16; No leakage corrugated tube 17 upper end is fastening with lower hold-down ring 30 by upper hold-down ring 16, and lower end is fastening by connecting link nut 31,
Described electromagnetic exciter adopts Electromagnetic Drive, and rotating ring 33 is built in electromagnetic exciter 20, and stationary ring 34 is solid in valve rod 11 upper end by screwed tight.Electromagnetic exciter 20 adopts stud 35 and body 10 fastening by gland 21; Gland has a through hole, in through hole, be provided with flow sensor 29, in described upper hold-down ring, be provided with displacement transducer 26;
Described body 10 has a steam (vapor) outlet 18 and a steam inlet 19;
Described test steam supply retracting device comprises steam generator 23, condenser 24, water pump 25, non-return valve 26 and variable valve 27;
The outlet of described steam generator 23 is connected with one end of variable valve 27, the other end of variable valve is connected with steam inlet 19, the import of steam generator 23 is reclaimed delivery side of pump and is connected, the import of recovery pump 25 is connected with the outlet of condenser 24, the import of condenser is connected with the outlet of non-return valve 26, and the entrance of non-return valve is connected with steam (vapor) outlet 18.
The course of work: drive motor 1 drives reciprocating block slider 3 to reciprocatingly slide by excentric shaft 2, valve rod 11 connects synchronous to-and-fro movement in body 10 by connecting link 12 and reciprocating block slider 3, the real-time Jiggled process of analog regulation valve valve rod.
Test the to-and-fro movement of different stroke valve rod 11, adopt the excentric shaft 2 changing different eccentric throw; For ensureing reciprocating block slider 3 center and body 10 center centering, thus ensure valve rod 3 and body 10 center centering, reduce the test error brought because centering difference, adopt link 9 lower end to insert support 7 and locate, link 9 center provides reciprocal slideway for reciprocating block slider 3 simultaneously.
Valve rod about 3 two ends and valve pocket 13 and valve pocket 14 mating area adopt and are arranged symmetrically with, and can realize single test and test valve rod performance for twice, test data is more accurate.
Adopt metallic bellows 17 not only can prevent from revealing, there is the vibration of braking absorption connecting link 12 simultaneously, reduce itself vibrates and bring displacement error.
The high pressure steam that steam generation gas produces is imported and exported by steam and is circulated at internal body; Electromagnetic exciter stationary ring installs valve rod tail end, by regulating excited frequency simulation valve rod Vibration Condition, under realizing different steam parameter, different vibration frequency lower valve rod performance test research.Between valve rod and valve pocket, thickness of liquid film is by displacement sensor, and leakage rate is measured by flow sensor.

Claims (1)

1. turbine governor valve valve rod performance test apparatus, is characterized in that: comprise propulsion system, valve rod test mounting platform and test steam supply retracting device;
Described propulsion system comprise motor, support, excentric shaft, reciprocating block slider, spring, the first rolling bearing and the second rolling bearing;
One end of described excentric shaft is arranged on support by the first rolling bearing, and the other end is connected with the output shaft of motor; Have groove bottom reciprocating block slider, the second rolling bearing is fixed in the groove of reciprocating block slider by pin, and one end of spring is connected with the top of reciprocating block slider, and the other end of spring is placed on support, and rolling bearing is contacted with excentric shaft by spring-return power;
Described valve rod test mounting platform comprises: link, body, valve rod, connecting link, Lower shaft sleeve, Upper shaft sleeve, nut, upper hold-down ring, anti-leak metallic bellows, steam (vapor) outlet, steam inlet, electromagnetic exciter, gland, the first bolt, displacement transducer, flow sensor, lower hold-down ring, connecting link nut, the second bolt, rotating ring, stationary ring and stud;
Described body is connected with link by the upper and lower hold-down ring of the first bolt tightening; link is connected with support by the second bolt; link location adopts lower end to insert support, and insertion end center is opened hole and provided slideway for reciprocating block slider simultaneously, strengthens body center pit and its center centring property;
Described valve rod is connected with reciprocating block slider by connecting link, and described connecting link is provided with connecting link nut, and connecting link adopts with connecting link nut and is threaded; Valve rod is arranged in body, and the two ends up and down of valve rod are respectively equipped with valve pocket, and upper valve sleeve compresses spacing by electromagnetic exciter, and lower end valve pocket compresses spacing by upper hold-down ring; No leakage corrugated tube upper end is fastening by upper hold-down ring and lower hold-down ring, and connecting link fastening nuts is passed through in lower end;
Described electromagnetic exciter adopts Electromagnetic Drive, and rotating ring is built in electromagnetic exciter, and stationary ring is solid in valve rod upper end by screwed tight; Electromagnetic exciter by gland adopt stud and body fastening; Gland has a through hole, in through hole, be provided with flow sensor, in described upper hold-down ring, be provided with displacement transducer;
Described body has a steam (vapor) outlet and a steam inlet;
Described test steam supply retracting device comprises steam generator, condenser, water pump, non-return valve and variable valve;
The outlet of described steam generator is connected with one end of variable valve, the other end of variable valve is connected with steam inlet, the import of steam generator is reclaimed delivery side of pump and is connected, the import of recovery pump is connected with the outlet of condenser, the import of condenser is connected with the outlet of non-return valve, and the entrance of non-return valve is connected with steam (vapor) outlet.
CN201520095866.5U 2015-02-10 2015-02-10 Turbine governor valve valve rod performance test apparatus Withdrawn - After Issue CN204556231U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520095866.5U CN204556231U (en) 2015-02-10 2015-02-10 Turbine governor valve valve rod performance test apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520095866.5U CN204556231U (en) 2015-02-10 2015-02-10 Turbine governor valve valve rod performance test apparatus

Publications (1)

Publication Number Publication Date
CN204556231U true CN204556231U (en) 2015-08-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520095866.5U Withdrawn - After Issue CN204556231U (en) 2015-02-10 2015-02-10 Turbine governor valve valve rod performance test apparatus

Country Status (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568425A (en) * 2015-02-10 2015-04-29 杭州电子科技大学 Performance test device for valve rod of adjusting valve of turbine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104568425A (en) * 2015-02-10 2015-04-29 杭州电子科技大学 Performance test device for valve rod of adjusting valve of turbine
CN104568425B (en) * 2015-02-10 2017-05-17 杭州电子科技大学 Performance test device for valve rod of adjusting valve of turbine

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Granted publication date: 20150812

Effective date of abandoning: 20170517

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Granted publication date: 20150812

Effective date of abandoning: 20170517

AV01 Patent right actively abandoned
AV01 Patent right actively abandoned