CN101813574B - Mechanical tripping operation function verification device in fluid environment - Google Patents
Mechanical tripping operation function verification device in fluid environment Download PDFInfo
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- CN101813574B CN101813574B CN201010154151A CN201010154151A CN101813574B CN 101813574 B CN101813574 B CN 101813574B CN 201010154151 A CN201010154151 A CN 201010154151A CN 201010154151 A CN201010154151 A CN 201010154151A CN 101813574 B CN101813574 B CN 101813574B
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- hydroecium
- flyball
- main shaft
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Abstract
The invention discloses a mechanical tripping operation function verification device in fluid environment, mainly comprising an engine base, two bearing supports, a principal axis, an actuating device, a flyball tripping operation device, a speed measurement unit and a tripping operation monitoring unit, wherein the bearing supports are arranged on the engine base, the principal axis is supported on the bearing supports and is in actuating connection with the actuating device; the flyball tripping operation device is arranged on the principal axis, the engine base is also provided with a water chamber; the principal axis penetrates through the water chamber; an axis inlet and an axis outlet on the water chamber are respectively provided with a back pressure cavity; and the flyball tripping operation device is arranged in the water chamber. The mechanical tripping operation function verification device in the fluid environment, which is obtained by the invention, can simulate the air working condition of the flyball tripping operation structure when the water chamber and the back pressure cavity are in air working condition, can simulate fluid working condition, is suitable for verifying various flyball designs and providing parameter correction under air and fluid pressure.
Description
Technical field
The present invention relates to a kind of demo plant of turbine rotor mechanical trip function, mechanical trip functional verification device in particularly a kind of fluid environment.
Background technology
It is very extensive that flyball tripping operation structure is used on steam turbine; The work condition environment of the structure of flyball tripping operation in the past in gas, after the designer designs flyball tripping operation structure, can detect the performance of this device through the mechanical trip device demo plant under gaseous environment usually; Mechanical trip device commonly used has two kinds of pin formula, flying barrel formulas; Gas operating mode during through analog operation can effectively obtain the various aspects of performance of flyball tripping operation structure, and is respond well.
Along with the reach of science, flyball tripping operation product extends to the nuclear power field gradually, and the operating mode of the flyball tripping mechanism of nuclear power device steam turbine is in the fluid environment of certain pressure is arranged; In order to adapt to new operating mode, people design a kind of novel, at mechanical tripping device in fluid environment; Comprise flyball, wherein, described flyball comprises female flyball and sub-flyball; Wherein, female flyball is a closed shell; Sub-flyball is positioned at female flyball chamber, and its movement locus and female flyball axially parallel, the barycenter of sub-flyball depart from the tripgear center, near the end that flies out.Because when whole device is in the fluid environment; Because fluid is to its influence; Comprise pressure, the uncertainty of temperature factor, flyball tripping operation structure each side characteristic with in gaseous environment, differ widely; Original mechanical trip device under gaseous environment (like pin formula, flying barrel formula) can not satisfy the operating mode under the fluid environment, and the trip checking of structure each side characteristic has brought difficulty to flyball.At present, the relevant report of the mechanical trip device that Shang Weiyou can use under fluid environment after the technician designs this flyball tripping mechanism, is badly in need of the special-purpose demo plant of a cover, is used to detect the operating characteristic of flyball tripping mechanism.
Summary of the invention
Mechanical trip functional verification device in a kind of fluid environment of simulating flyball tripping operation product fluid operating mode that the objective of the invention is to provide for the deficiency that solves above-mentioned technology.
In order to achieve the above object, mechanical trip functional verification device in the fluid environment that the present invention designed, it mainly comprises support, two bearing supports, main shaft, drive unit, flyball tripgear, the unit that tests the speed, tripping operation monitoring means; Bearing support is arranged on the support; Its upper support has main shaft, and main shaft and drive unit are in transmission connection, and the flyball tripgear is arranged on the main shaft; Also be provided with a hydroecium on the described support; Said main shaft passes this hydroecium, is provided with back pressure cavity respectively at enterprising axle mouth of hydroecium and shaft mouth place, and said flyball tripgear is arranged in the hydroecium.It is identical that hydroecium can be simulated the residing fluid operating mode of flyball tripgear, and back pressure cavity can be simulated the operating mode of shaft end in the fluid environment.
Preferred scheme is (to be " left side " near drive unit one side about said hydroecium; Opposite side is " right side ") be respectively equipped with the submerged bearing that runs through sidewall on the sidewall; Advance axle mouthful and a shaft mouth thereby form one, said main shaft is equipped with in submerged bearing and passes hydroecium, on the described hydroecium sidewall, the opposite position place of advancing axle mouth and shaft mouth is connected with flange respectively; Between hydroecium sidewall and two flanges, form two back pressure cavity; In order further to reach the mechanical seal effect, prevent that the water in the hydroecium from passing through main shaft to the bearing support seepage, all be connected with water retaining disk on described two side flanges; Said water retaining disk matches with main shaft, makes main shaft pass both sides water retaining disk and mechanical seal.
As preferably, mechanical trip functional verification device also comprises water supply circulatory system in the described fluid environment, all is provided with water inlet pipe and return pipe on described two back pressure cavity and the hydroecium, and water inlet pipe links to each other with water supply circulatory system with return pipe.
In order to reach further mechanical seal effect, described water retaining disk is two-layer inside and outside dividing, and the internal layer water retaining disk is connected on the flange, and outer water retaining disk is connected on the internal layer water retaining disk, and water retaining disk is provided with scupper, and scupper is communicated with water supply circulatory system through the pipe that leaks.
As preferably, described water supply circulatory system mainly is made up of water tank, forcing pump and reduction valve, and described water inlet pipe, return pipe and the Guan Douyu water tank that leaks are communicated with, and on water inlet pipe, are provided with forcing pump and reduction valve.Operation can be crossed, different pressure can be in back pressure cavity, hydroecium, obtained reduction valve.
As preferably, said bearing support is provided with bearing seat, is provided with two spring bearings in the bearing seat, two back-to-back and tight installations of spring bearing, thus can obtain the good supporting effect.
As preferably, the bearing support that is positioned at the hydroecium right side is provided with the preload spring, and this preload spring is positioned at the bearing seat left side.
As preferably, described hydroecium top is provided with tank lid, and tank lid is provided with the gas outlet that links to each other with hydroecium, and gas outlet is provided with vent valve.
As preferably, described back pressure cavity is provided with pressure sensing cell.
Mechanical trip functional verification device in the resulting fluid environment of the present invention; When hydroecium and back pressure cavity are the gas operating mode; Can simulate the gas operating mode of flyball tripping operation structure; Simultaneously can simulate the fluid operating mode again, be applicable under air and the hydrodynamic pressure, verify and provide parameter correction all kinds of flyball designs.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention 1;
Fig. 2 is the structural representation of the embodiment of the invention 2;
Fig. 3 is the structural representation of the embodiment of the invention 3;
Fig. 4 is the enlarged drawing at A place among Fig. 3.
Among the figure: support 1, bearing support 2, main shaft 3, drive unit 4, flyball tripgear 5, the unit 6 that tests the speed, tripping operation monitoring means 7, hydroecium 8, flange 9, submerged bearing 10, back pressure cavity 11, water inlet pipe 12, return pipe 13, water retaining disk 14, bearing seat 15, spring bearing 16, preload spring 17, water tank 18, forcing pump 19, reduction valve 20, tensimeter 21, tank lid 22, gas outlet 23, vent valve 24.
Embodiment
Combine accompanying drawing that the present invention is done further description through embodiment below.
Embodiment 1
As shown in Figure 1, mechanical trip functional verification device in the fluid environment that present embodiment is described, it mainly comprises support 1, bearing support 2, main shaft 3, drive unit 4, flyball tripgear 5, the unit 6 that tests the speed, tripping operation monitoring means 7; Bearing support 2 is arranged on the support 1; Its upper support has main shaft 3, and main shaft 3 is in transmission connection with drive unit 4, and flyball tripgear 5 is arranged on the main shaft 3; Also be provided with a hydroecium 8 on the described support 1; Said main shaft 3 passes this hydroecium 8, is provided with back pressure cavity 11 respectively at hydroecium 8 enterprising axle mouths and shaft mouth place, and said flyball tripgear 5 is arranged in the hydroecium 8.
After hydroecium 8 and back pressure cavity 11 are full of water, can simulate the fluid operating mode of flyball tripping operation structure, and according to the difference of the real fluid operating mode of flyball tripping operation structure, but the hydraulic pressure of manual change's hydroecium 8 and back pressure cavity 11 (increasing hydraulic pressure), density etc. as adopting pressurized air.
As shown in Figure 2, mechanical trip functional verification device in the fluid environment that present embodiment is described, it mainly comprises support 1, two bearing supports 2, main shaft 3, drive unit 4, flyball tripgear 5, the unit 6 that tests the speed, tripping operation monitoring means 7; Bearing support 2 is arranged on the support 1; Its upper support has main shaft 3, and main shaft 3 is in transmission connection with drive unit 4, and flyball tripgear 5 is arranged on the main shaft 3; Also be provided with a hydroecium 8 on the described support 1; Two bearing supports 2 are separately positioned on hydroecium 8 both sides, are respectively equipped with the submerged bearing 10 that runs through sidewall on hydroecium 8 left and right sides sidewalls, advance axle mouth and a shaft mouth thereby form one; Said main shaft 3 is equipped with in submerged bearing 10 and passes hydroecium 8, and said flyball tripgear 5 is arranged in the hydroecium 8; On described hydroecium 8 sidewalls, advance axle mouthful and the opposite position place of shaft mouth is connected with flange 9 respectively; Between hydroecium 8 sidewalls and two flanges 9, form two back pressure cavity 11; All be provided with water inlet pipe 12 and return pipe 13 on described two back pressure cavity 11 and the hydroecium 8, water inlet pipe 12 links to each other with water supply circulatory system with return pipe 13; All be connected with water retaining disk 14 on described two side flanges 9, said water retaining disk 14 matches with main shaft 3, makes main shaft 3 pass both sides water retaining disk 14 and mechanical seal.
Described water supply circulatory system mainly is made up of water tank 18, forcing pump 19 and reduction valve 20, and described water inlet pipe 12 all is communicated with water tank 18 with return pipe 13, on water inlet pipe 12, is provided with forcing pump 19 and reduction valve 20.Through reduction valve 20 is set respectively, keeping the pressure at hydroecium 8 places is 5 kilograms, simulation flyball tripgear 5 residing operating modes, and keeping the pressure of back pressure cavity 11 is 2 kilograms, is used for simulating the operating mode of fluid environment shaft end.
Like Fig. 3, shown in 4, mechanical trip functional verification device in the fluid environment that present embodiment is described, it mainly comprises support 1, two bearing supports 2, main shaft 3, drive unit 4, flyball tripgear 5, the unit 6 that tests the speed, tripping operation monitoring means 7; Bearing support 2 is arranged on the support 1; Its upper support has main shaft 3, wherein all is provided with bearing seat 15 on each bearing support 2, all is provided with two spring bearings 16 in the bearing seat 15; Two spring bearing 16 back-to-back and tight installations; Main shaft 3 is equipped with in spring bearing 16, on the bearing support 2 that is positioned at hydroecium 8 right sides, is provided with preload spring 17, and this preload spring 17 is positioned at bearing seat 15 left sides.Adopt springs preload lotus mode, avoid causing vibration owing to the fluid high-speed friction makes a thermal elongation and bearing temperature rise cause bending shaft to produce new imbalance.When the axle thermal elongation, spring axially promotes bearing outer ring under the effect of preload, guarantees the running accuracy of axle.
Flyball tripgear 5 is arranged on the main shaft 3; Also be provided with a hydroecium 8 on the described support 1; Two bearing supports 2 are separately positioned on hydroecium 8 both sides, are respectively equipped with the submerged bearing 10 that runs through sidewall on hydroecium 8 left and right sides sidewalls, advance axle mouth and a shaft mouth thereby form one; Said main shaft 3 is equipped with in submerged bearing 10 and passes hydroecium 8, and said flyball tripgear 5 is arranged in the hydroecium 8; On described hydroecium 8 sidewalls, advance axle mouthful and the opposite position place of shaft mouth is connected with flange 9 respectively; Between hydroecium 8 sidewalls and two flanges 9, form two back pressure cavity 11; Back pressure cavity 11 is provided with tensimeter 21; Certainly tensimeter 21 also can be arranged on the water pipe that is connected with back pressure cavity 11, and tensimeter also can replace with pressure transducer.All be provided with water inlet pipe 12 and return pipe 13 on described two back pressure cavity 11 and the hydroecium 8, water inlet pipe 12 links to each other with water supply circulatory system with return pipe 13; All be connected with water retaining disk 14 on described two side flanges 9, said water retaining disk 14 matches with main shaft 3, makes main shaft 3 pass both sides water retaining disk 14 and mechanical seal.
Described hydroecium top is provided with tank lid 22, and tank lid 22 is provided with the gas outlet 23 that links to each other with hydroecium, and gas outlet 23 is provided with vent valve 24.
In order further to reach the mechanical seal effect; Prevent that the water in the hydroecium 8 from passing through main shaft 3 to bearing support 2 seepages; Two-layer inside and outside the described water retaining disk 14 minutes, internal layer water retaining disk 14 is connected on the flange 9, and outer water retaining disk 14 is connected on the internal layer water retaining disk 14; Water retaining disk 14 is provided with scupper, and scupper is communicated with water supply circulatory system.
When checking; When steam turbine machinery flyball reaches design speed, flyball ejects, and triggers tripping lever feedback electric signal; Tripping operation monitoring means 7 can detect this process; And can be through unit 6 and the registering instrument record tripping operation rotating speed of testing the speed, and be foundation with the record rotary speed data, carry out the reconditioning of sub-flyball centroid offset.
Claims (9)
1. mechanical trip functional verification device in the fluid environment, it mainly comprises support, two bearing supports, main shaft, drive unit, flyball tripgear, the unit that tests the speed, tripping operation monitoring means, bearing support is arranged on the support; Its upper support has main shaft, and main shaft and drive unit are in transmission connection, and the flyball tripgear is arranged on the main shaft; It is characterized in that also being provided with a hydroecium on the described support, said main shaft passes this hydroecium, is provided with back pressure cavity respectively at enterprising axle mouth of hydroecium and shaft mouth place; Said flyball tripgear is arranged in the hydroecium; When steam turbine machinery flyball reaches design speed, flyball ejects, and triggers tripping lever feedback electric signal; The tripping operation monitoring means can detect this process, and can be through unit and the registering instrument record tripping operation rotating speed that tests the speed.
2. mechanical trip functional verification device in the fluid environment according to claim 1; It is characterized in that being respectively equipped with the submerged bearing that runs through sidewall on the sidewall of the said hydroecium left and right sides; Advance axle mouthful and a shaft mouth thereby form one, said main shaft is equipped with in submerged bearing and passes hydroecium, on the described hydroecium sidewall, the opposite position place of advancing axle mouth and shaft mouth is connected with flange respectively; Between hydroecium sidewall and two flanges, form two back pressure cavity; All be connected with water retaining disk on described two side flanges, said water retaining disk matches with main shaft, makes main shaft pass both sides water retaining disk and mechanical seal.
3. mechanical trip functional verification device is characterized in that also comprising water supply circulatory system in the fluid environment according to claim 2, all is provided with water inlet pipe and return pipe on described two back pressure cavity and the hydroecium, and water inlet pipe links to each other with water supply circulatory system with return pipe.
4. mechanical trip functional verification device in the fluid environment according to claim 3; It is characterized in that described water retaining disk is two-layer inside and outside dividing; The internal layer water retaining disk is connected on the flange; Outer water retaining disk is connected on the internal layer water retaining disk, and water retaining disk is provided with scupper, and scupper is communicated with water supply circulatory system through the pipe that leaks.
5. mechanical trip functional verification device in the fluid environment according to claim 4; It is characterized in that described water supply circulatory system mainly is made up of water tank, forcing pump and reduction valve; Described water inlet pipe, return pipe and the Guan Douyu water tank that leaks are communicated with, and on water inlet pipe, are provided with forcing pump and reduction valve.
6. according to mechanical trip functional verification device in the described fluid environment of one of claim 1-5, it is characterized in that said bearing support is provided with bearing seat, be provided with two spring bearings in the bearing seat, two back-to-back and tight installations of spring bearing.
7. mechanical trip functional verification device in the fluid environment according to claim 6 is characterized in that the bearing support that is positioned at the hydroecium right side is provided with the preload spring, and this preload spring is positioned at the bearing seat left side.
8. mechanical trip functional verification device in the fluid environment according to claim 7 is characterized in that described hydroecium top is provided with tank lid, and tank lid is provided with the gas outlet that links to each other with hydroecium, and gas outlet is provided with vent valve.
9. mechanical trip functional verification device in the fluid environment according to claim 8 is characterized in that described back pressure cavity is provided with pressure sensing cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010154151A CN101813574B (en) | 2010-04-23 | 2010-04-23 | Mechanical tripping operation function verification device in fluid environment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010154151A CN101813574B (en) | 2010-04-23 | 2010-04-23 | Mechanical tripping operation function verification device in fluid environment |
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| CN101813574A CN101813574A (en) | 2010-08-25 |
| CN101813574B true CN101813574B (en) | 2012-10-17 |
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| 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 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054402A (en) * | 2000-08-11 | 2002-02-20 | Fuji Electric Co Ltd | Emergency governor testing device for turbine |
| CN1854470A (en) * | 2005-04-19 | 2006-11-01 | 艾默生过程管理电力和水力解决方案有限公司 | Electronically controllable and testable turbine trip system |
| CN201688982U (en) * | 2010-04-23 | 2010-12-29 | 杭州汽轮机股份有限公司 | Mechanical tripping function verification device in fluid environment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62139907A (en) * | 1985-12-12 | 1987-06-23 | Toshiba Corp | Emergency trip tester for turbine |
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- 2010-04-23 CN CN201010154151A patent/CN101813574B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002054402A (en) * | 2000-08-11 | 2002-02-20 | Fuji Electric Co Ltd | Emergency governor testing device for turbine |
| CN1854470A (en) * | 2005-04-19 | 2006-11-01 | 艾默生过程管理电力和水力解决方案有限公司 | Electronically controllable and testable turbine trip system |
| CN201688982U (en) * | 2010-04-23 | 2010-12-29 | 杭州汽轮机股份有限公司 | Mechanical tripping function verification device in fluid environment |
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Address after: 310022 Building 1, No. 608, Kangxin Road, Linping District, Hangzhou, Zhejiang Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: 357 Shiqiao Road, Xiacheng District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |