CN205047258U - A prevent connecting device soon for high pressure regulation steam valve - Google Patents
A prevent connecting device soon for high pressure regulation steam valve Download PDFInfo
- Publication number
- CN205047258U CN205047258U CN201520699565.3U CN201520699565U CN205047258U CN 205047258 U CN205047258 U CN 205047258U CN 201520699565 U CN201520699565 U CN 201520699565U CN 205047258 U CN205047258 U CN 205047258U
- Authority
- CN
- China
- Prior art keywords
- valve
- connecting rod
- plugging device
- pipeline leakage
- leakage plugging
- Prior art date
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Of Turbines (AREA)
Abstract
The utility model discloses a prevent connecting device soon for high pressure regulation steam valve wherein adjusts the aperture of steam valve and is controlled by the servomotor, it is connected with the manipulation seat connecting rod of servomotor to adjust the valve rod of steam valve, the tip of handling the seat connecting rod passes through locating pin and middle assembly pilot pin and links to each other with the ha fujie top, passes through screw fastening through connecting rod cover nut and hafujie, it prevents the loosening attachment screw to be equipped with between connecting rod cover nut and the ha fujie, ha fujie adds the round pin with valve stem end through the screw and links firmly, it has the corresponding check plate soon of preventing to weld respectively on connecting rod cover nut and the ha fujie to prevent with two parts that the check plate links firmly soon through the bolt. The utility model discloses a preventing the loosening attachment screw and preventing that soon the check plate combines, the wearing and tearing of reducing coupling member ha fujie screw reduce when the valve is closed the shearing impact force of valve rod with hafujie connecting pin, screw, and the life of extension valve spare part has improved the reliability of whole turbo generator set electricity generation.
Description
Technical field
The utility model belongs to steam turbine generator technical field, is specifically related to a kind ofly revolve connection set for the anti-of high-pressure regulation steam valve.
Background technique
Steam Turbine Generator is assembled with two main vapour of high pressure and regulates union valve and two main vapour of reheating to regulate union valve, and each main vapour combine regulation valve comprises the main stop valve modulating valve identical with two; The aperture of these valves controls by respective oil engine, and oil engine is controlled by digital electro-hydraulic control system; Changed the valve stroke change of modulating valve by external load variable signal, thus the steam throttle flow of steam turbine is changed and causes regulating the change of steam turbine generator active power to adapt to the self-regulating process of external load change.
Power is there is and often to undergo mutation phenomenon in steam turbine generator unit in normal operation, principal phenomena is when its instruction and main vapour parameter constant, a few internal loading sudden change in second 8 ~ 40MW, its first stage pressure is undergone mutation, pressure is changed significantly behind the door to a high-profile, and after pitch pressure early than chugging, find by analysis, under the effect of spool high pressure steam flow, the valve rod of servo valve and pipeline leakage plugging device produce alternation rotating force, make to handle seat connecting rod cover nut and pipeline leakage plugging device place where troops were originally stationed revolve pin rub shorten, pin thread is killed, lost efficacy; And then make lofty tone family of power and influence's bar and pipeline leakage plugging device connecting thread under the effect of spool steam flow, produce alternating stress, Screw Thread Fit Clearance becomes greatly gradually, upper and lower worm tooth rubs repeatedly, tip of thread footpath diminishes deterioration, load diminishes, and then it is bad to make valve stem top contact with pipeline leakage plugging device, there is gap, the anti-pin that revolves is caused to produce the fracture of larger shearing impact power when valve closing; Because valve rod and pipeline leakage plugging device connecting thread lost efficacy, pin-and-hole becomes large, pin fracture, cause spool sometimes can upper and lower unexpected movement under steam flow effect, thus the instantaneous steam flow changing Turbo-generator Set nozzle sets, unit load is suddenlyd change, valve feedback signal from oil engine piston position bar, so feedback signal amount does not become.
Model utility content
The technical problem that the utility model solves is: cause worm tooth repeatedly to rub for producing rotation between the servo valve valve rod of above-mentioned steam turbine generator unit and pipeline leakage plugging device, tip of thread footpath diminish worsen cause pin rupture cause the power of the assembling unit sudden change defect, there is provided a kind of and revolve connection set for the anti-of high-pressure regulation steam valve, can effectively limit the rotary motion occurred between valve rod and pipeline leakage plugging device.
The utility model adopts following technological scheme to realize:
A kind ofly revolve connection set for the anti-of high-pressure regulation steam valve, wherein the aperture of servo valve 2 is controlled by oil engine 1, the valve rod 6 of described servo valve 2 is connected with the manipulation seat connecting rod 4 of oil engine 1, described manipulation seat connecting rod 4 end is connected with pipeline leakage plugging device 5 by connecting rod cover nut 7, described connecting rod cover nut 7 is positioned to be handled on seat connecting rod 4, its internal thread and pipeline leakage plugging device 5 outside thread lock and eliminate the gap handling seat interlinking lever end and pipeline leakage plugging device 5 top, be provided with between described connecting rod cover nut 7 and pipeline leakage plugging device 5 and prevent revolving lock screw 8, the outside thread that described pipeline leakage plugging device 5 internal thread and valve rod 6 end are arranged locks, and between valve rod and pipeline leakage plugging device, adopt round pin to be connected.
Further, described connecting rod cover nut 7 and pipeline leakage plugging device 5 are welded with respectively and corresponding anti-ly revolve check plate 9, and revolve check plate by bolt be connected anti-for two-part.
Further, described manipulation seat connecting rod 4 and pipeline leakage plugging device 5 top are by locating stud and pilot pin contraposition assembling.
In the utility model, pad is set between the top end face of described valve rod 6 and the inner chamber roof of pipeline leakage plugging device 5 to eliminate gap.
Preferably, described pad adopts stainless steel gasket.
The utility model adopts the anti-lock screw that revolves to combine with the anti-check plate that revolves, solve pipeline leakage plugging device and connecting rod and overlap the problem that nut rotates, minimizing pipeline leakage plugging device and connecting rod overlap nut, the mutual turn that pipeline leakage plugging device and valve rod can produce because being threaded loosens and causes worm tooth repeatedly to rub, tip of thread footpath diminishes deterioration, the gap that cooperatively interacts is caused to increase, and then make valve rod and pipeline leakage plugging device connecting pin when valve closing, the shearing impact power of screw thread increases, also the manipulation seat connecting rod of servo valve is avoided to overlap being threaded of nut and pipeline leakage plugging device prevents revolving the thread biting locking of lock screw, lost efficacy, thus prevent valve rod and pipeline leakage plugging device thread failure further, pin-and-hole is avoided to become large, the expansion degradation trend development of pin fracture, the working life of valve components can be extended, improve the reliability of whole Turbo-generator Set generating.The anti-check plate that revolves prevents pipeline leakage plugging device from overlapping nut generation damage by friction screw thread with manipulation seat connecting rod with the anti-lock screw that revolves, improve the working life be threaded, pad is installed additional additionally by the gap measured between valve stem tip and pipeline leakage plugging device inner chamber roof, eliminate the gap of valve stem top and pipeline leakage plugging device inner chamber roof, shearing impact power to the screw thread between valve rod and pipeline leakage plugging device during minimizing valve closing, improves the working life of threaded stem.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is the connection diagram of high-pressure regulation steam valve in the utility model and oil engine.
Fig. 2 is that servo valve valve rod of the present utility model and the anti-of manipulation seat connecting rod revolve connection set schematic diagram.
Number in the figure: 1-oil engine, 2-servo valve, 3-handles seat, and 4-handles seat connecting rod, 5-pipeline leakage plugging device, 6-valve rod, 7-connecting rod cover nut, and 8-is anti-revolves lock screw, and 9-is anti-revolves check plate.
Embodiment
Embodiment
See Fig. 1 and Fig. 2, in steam turbine generator unit, high-pressure regulation steam valve 2 for steam regulation is controlled by oil engine 1, wherein, the valve rod 6 of servo valve 2 is connected with the manipulation seat connecting rod 4 of oil engine 1, handle seat connecting rod 4 to be arranged in manipulation seat 3, oil engine band ovable valve stem moves, and the aperture realizing servo valve regulates.
In assembling, first the end handling seat connecting rod 4 is connected with pipeline leakage plugging device 5 top contraposition by the assembling pilot pin of two locating studs and centre, be positioned at by step and handle connecting rod cover nut 7 internal thread on seat connecting rod 4 and pipeline leakage plugging device 5 outside thread locks, and eliminate the gap handling seat interlinking lever end and pipeline leakage plugging device 5 top, in assembly process, connecting rod cover nut 7 is movably set in be handled on seat connecting rod, by step axially locating, and can relative manipulation seat link rotatable, be provided with between connecting rod cover nut 7 and pipeline leakage plugging device 5 and radial anti-ly revolve lock screw 8.Pipeline leakage plugging device 5 and valve rod 6 end are connected, concrete, pipeline leakage plugging device 5 is for being provided with the connection member of internal and external threads, its outside thread and connecting rod overlap nut 7 and are spirally connected, internal thread and valve rod 6 end are spirally connected, and located by round pin between valve rod 6 and pipeline leakage plugging device 5, the stainless steel gasket of respective thickness is increased when there is gap between the end face and the inner chamber roof of pipeline leakage plugging device 5 of valve rod 6, to eliminate the gap between valve stem top and pipeline leakage plugging device inner chamber roof, carry out adding stainless steel gasket when valve stem top and pipeline leakage plugging device inner chamber roof are existed gap to eliminate, shearing impact power to the screw thread between valve rod and pipeline leakage plugging device during to reduce valve closing.
Overlap nut for preventing pipeline leakage plugging device and connecting rod to rotate and worsen the inside and outside screw thread that is fastenedly connected of pipeline leakage plugging device and finally cause it to lose efficacy, make pipeline leakage plugging device be attached thereto component space to increase and the aperture affecting servo valve, connecting rod cover nut 7 and pipeline leakage plugging device 5 are welded with the anti-of contraposition respectively and revolve check plate 9, two-partly anti-ly revolves check plate 9 and be connected by bolt.Pipeline leakage plugging device and connecting rod are overlapped after nut and overlap nut by preventing that revolving check plate is connected at pipeline leakage plugging device and connecting rod, and the bolt of joining two M12 connects, to guarantee that pipeline leakage plugging device and connecting rod overlap nut and relative turn does not occur.
For Datang Hua Yinjin Zhushan County thermal power generation branch company #3 Turbo-generator Set, #3 Turbo-generator Set is overcritical, resuperheat, single shaft, three cylinders, four exhaust condensing turbines, machine is assembled with two main vapour of high pressure and regulates union valve and two main vapour of reheating to regulate union valve, and each main vapour combine regulation valve comprises the main stop valve modulating valve identical with two; The aperture of these valves controls by respective oil engine, and oil engine is controlled by digital electro-hydraulic control system; Changed the valve stroke change of modulating valve by external load variable signal, thus the steam throttle flow of steam turbine is changed and causes regulating the change of steam turbine generator active power to adapt to the self-regulating process of external load change.
Wherein, #3 machine its active power in normal operation is undergone mutation phenomenon often, principal phenomena is when its instruction and main vapour parameter constant, a few internal loading sudden change in second 8 ~ 40MW, its first stage pressure is undergone mutation, #1 to a high-profile behind the door pressure be changed significantly, and after pitch pressure early than chugging; Because load instruction does not change, actual load is undergone mutation, pitch aperture is regulated through DEH instruction adjustment, within 1 ~ 2 hour, can recover stable, as during 27 days 6 May in 2013 24 points 18 seconds, to a high-profile valve mode be suitable valve mode, gain merit for 334.84MW, meritoriously prominent through 4 seconds drop to 314.79MW, main vapour pressure, Stream temperature degree, high pitch instruction and feedback do not become substantially, and #1 to a high-profile behind the door pressure have dropped 3.22MPa, other to a high-profile behind the door pressure almost do not become.Then, during 27 days 7 May in 2013,19 points there is again load for 26 seconds and to jump 8.35MW, and during 28 days morning 2 May in 2013,2 points of #3 unit loads drop to 298MW from 339MW suddenly, situation and above-mentioned load swing phenomenon similar; And AGC target load instruction does not become.
To occur that adopting the such scheme of the present embodiment to carry out improvement between the unit high-pressure regulation steam valve of above-mentioned phenomenon and oil engine connects, wherein, valve stem top and pipeline leakage plugging device are existed gap to carry out adding stainless steel gasket and eliminate, to valve rod and anti-shearing impact power of revolving lock screw, screw thread during to reduce valve closing.There is 0.9 ㎜ gap in measurement #1 valve stem top and pipeline leakage plugging device inner chamber roof, add 0.9 ㎜ stainless steel gasket to eliminate, it is that 0.03 ㎜ does not add stainless steel gasket that #3 valve stem top and pipeline leakage plugging device inner chamber roof exist gap, #2 valve stem top and pipeline leakage plugging device inner chamber roof add 0.1 ㎜ stainless steel gasket and eliminate gap, and #4 valve stem top and pipeline leakage plugging device inner chamber roof add 0.3 ㎜ stainless steel gasket and eliminate gap.Pipeline leakage plugging device and connecting rod are overlapped to overlap on nut respectively weld at pipeline leakage plugging device and connecting rod after nut and anti-ly revolve check plate, and join the bolt connection of two M12, to guarantee that the screw thread that pipeline leakage plugging device and connecting rod overlap nut does not wear and tear.
#3 machine after improvement is through the operation of nearly half a year, and load swing phenomenon never occurred once, and check each every bar to a high-profile of #3 machine and pipeline leakage plugging device pin and screw thread, pipeline leakage plugging device overlaps nut with manipulation seat connecting rod and all wear phenomenon do not occur; Ensure that the reliability of #3 captain's periodic duty.
These are only better implementation example of the present utility model, be not limited to the utility model, all within the utility model spirit and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. one kind revolves connection set for the anti-of high-pressure regulation steam valve, wherein the aperture of servo valve (2) is controlled by oil engine (1), the valve rod (6) of described servo valve (2) is connected with the manipulation seat connecting rod (4) of oil engine (1), it is characterized in that: described manipulation seat connecting rod (4) end is overlapped nut (7) by connecting rod and is connected with pipeline leakage plugging device (5), described connecting rod cover nut (7) is positioned to be handled on seat connecting rod (4), its internal thread and pipeline leakage plugging device (5) outside thread lock and eliminate the gap handling seat interlinking lever end and pipeline leakage plugging device (5) top, be provided with between described connecting rod cover nut (7) and pipeline leakage plugging device (5) and prevent revolving lock screw (8), the outside thread that the internal thread of described pipeline leakage plugging device (5) and valve rod (6) end are arranged locks, and between valve rod and pipeline leakage plugging device, adopt round pin to be connected.
2. according to claim 1ly a kind ofly revolve connection set for the anti-of high-pressure regulation steam valve, described connecting rod cover nut (7) and pipeline leakage plugging device (5) are welded with respectively and corresponding anti-ly revolve check plate (9), and by bolt, two-part are prevented that revolving check plate is connected.
3. according to claim 1ly a kind ofly revolve connection set for the anti-of high-pressure regulation steam valve, described manipulation seat connecting rod (4) and pipeline leakage plugging device (5) top are by locating stud and pilot pin contraposition assembling.
4. a kind of according to any one of claim 1-3 revolves connection set for the anti-of high-pressure regulation steam valve, arranges pad to eliminate gap between the top end face of described valve rod (6) and the inner chamber roof of pipeline leakage plugging device (5).
5. according to claim 4ly a kind ofly revolve connection set for the anti-of high-pressure regulation steam valve, described pad adopts stainless steel gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699565.3U CN205047258U (en) | 2015-09-10 | 2015-09-10 | A prevent connecting device soon for high pressure regulation steam valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520699565.3U CN205047258U (en) | 2015-09-10 | 2015-09-10 | A prevent connecting device soon for high pressure regulation steam valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047258U true CN205047258U (en) | 2016-02-24 |
Family
ID=55340847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520699565.3U Expired - Fee Related CN205047258U (en) | 2015-09-10 | 2015-09-10 | A prevent connecting device soon for high pressure regulation steam valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047258U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106969009A (en) * | 2017-05-27 | 2017-07-21 | 华电宁夏灵武发电有限公司 | A kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve |
| CN110719793A (en) * | 2017-04-06 | 2020-01-21 | 韦伯斯特生物官能(以色列)有限公司 | Disposable pump chamber for infusion pump |
-
2015
- 2015-09-10 CN CN201520699565.3U patent/CN205047258U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110719793A (en) * | 2017-04-06 | 2020-01-21 | 韦伯斯特生物官能(以色列)有限公司 | Disposable pump chamber for infusion pump |
| CN106969009A (en) * | 2017-05-27 | 2017-07-21 | 华电宁夏灵武发电有限公司 | A kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve |
| CN106969009B (en) * | 2017-05-27 | 2019-09-24 | 华电宁夏灵武发电有限公司 | A kind of steam turbine is high, intermediate pressure main stop valve Hough connector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205047258U (en) | A prevent connecting device soon for high pressure regulation steam valve | |
| CN100590332C (en) | Elliptical sealing surface for butterfly valve | |
| CN106555620B (en) | A kind of Steam Turhine Adjustment control valve device and method | |
| CN104455659A (en) | Top steam exhaust electromagnetic pressure relief valve for main steam system of power station | |
| CN106321160A (en) | Optimal design method of senary high pressure valve steam turbine sequence valve | |
| CN105134311A (en) | Running valve position determining method for supercritical/ultra-supercritical nozzle governing turbine | |
| CN107887917A (en) | Coal unit primary frequency function implementation method under a kind of non-coordinating mode | |
| CN204628734U (en) | Power station main steam system top steam discharge electromagnetic relief valve | |
| EP1881164B1 (en) | Device for regulating the intercept valves of a steam-turbine plant | |
| CN203686213U (en) | Butt welding type high-temperature and high-pressure rapid cut-off steam ball valve supporting online maintenance | |
| CN102937190A (en) | Ultra-large-diameter material switch angle valve | |
| CN207145717U (en) | A kind of regulating valve | |
| CN109958570A (en) | A kind of top cover safe connection structure of high water head hydraulic | |
| CN109028004A (en) | Peak regulation gas fired-boiler feedwater flow and pressure double-balance control system | |
| CN111927570B (en) | Steam distribution curve optimization method for undisturbed switching of single valve/sequence valve of nozzle-regulated steam turbine | |
| CN203835468U (en) | Automatic fine adjusting steam seal | |
| CN103603964A (en) | Online-maintainable butt-welding high-temperature high-pressure rapid cut-off steam ball valve | |
| CN114151553A (en) | Coaxial valve type structure of bivalve plate | |
| CN111677888A (en) | Communicating pipe butterfly valve structure for fine adjustment of zero-output operation of low-pressure cylinder | |
| CN219673572U (en) | Anti-loose device for oil pipe joint | |
| CN100393985C (en) | Regulating mechanism for precisely regulating top pressure and emergency full closing stator blade | |
| CN102207205B (en) | Integral forged high-temperature high-pressure abnormal protective seal ball valve device and mounting method thereof | |
| CN102252106A (en) | Link type cutoff butterfly valve of blast furnace | |
| CN207568659U (en) | A kind of steam turbine adjustable vane formula nozzle sets structure | |
| CN202325709U (en) | Stop structure of angular ring of steam room of high temperature and high pressure turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160224 Termination date: 20160910 |