CN205618208U - Small -size hydraulic pressure automatic barring gear - Google Patents
Small -size hydraulic pressure automatic barring gear Download PDFInfo
- Publication number
- CN205618208U CN205618208U CN201620372457.XU CN201620372457U CN205618208U CN 205618208 U CN205618208 U CN 205618208U CN 201620372457 U CN201620372457 U CN 201620372457U CN 205618208 U CN205618208 U CN 205618208U
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- piston
- chamber
- guiding valve
- sleeve
- oil
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Abstract
The utility model relates to a small -size hydraulic pressure automatic barring gear, fixed connection sleeve in the casing fit in sliding connection piston, piston, sleeve fit in sliding connection guiding valve, piston lower extreme pass through the piston rod and connect the pawl, are equipped with the spring in piston bottom surface and the casing lower extreme between the bottom surface, the F cavity has between the inside upper end of piston upper end and casing, the E cavity has between the inside lower extreme of piston lower extreme and casing, be equipped with annular channel in the casing, the guiding valve top has the B cavity, the guiding valve below has the Y cavity, be equipped with radial hole between the annular groove of piston and the piston hole, form annular cavity between annular groove and the shells inner wall, centre bore and lubricating oil export in the piston rod are connected to the guiding valve centre bore, the annular cavity passes through the Y cavity of the radial hole intercommunication guiding valve below in piston and the sleeve. The utility model discloses the moment of torsion is big, small, simple structure, easily installs and dismantles. It is also expanded to more turbine unit rotors and other rotating machinery rotors.
Description
Technical field
This utility model relates to a kind of after medium and small gas turbine prestart and shutdown, for avoiding rotor bow to deform, carries out the device of auto-barring.
Background technology
After steam turbine prestart and shutdown, for avoiding rotor bow to deform, jiggering work need to be carried out.The barring gear of steam turbine has manually and automatically two kinds of patterns.The commonly used hand turning of small steam turbine, needs artificial hand Moving plate to move custom-designed jiggering handle, and the mechanical mechanism consisted of connecting rod ratchet etc. rotates turbine rotor.As shown in Figure 1, hand-barring is made up of ratchet 6, handle 8, connecting rod 9.Hand-barring structure is more complicated, needs artificial disc fixed handle, is difficulty with rotor uniform rotation, and the moment of torsion that can drive is limited by manpower, is the most original jiggering mode.Medium-sized and Large-scale machine set all uses electronic automatic barring gear, by motor drive gear mechanism thus promote connecting rod detent mechanism dish to move turbine rotor.This barring gear is made up of motor, shaft coupling, gear train etc., and volume is big, structure is complicated, is generally used for the medium-and-large-sized Steam Turbine being not limited by a space.
Summary of the invention
This utility model is to provide for a kind of small-sized hydraulic automatic barring gear, rotor automatic rotary plate car after being used for realizing steam turbine prestart and shutting down.
For achieving the above object, the technical solution of the utility model is: a kind of small-sized hydraulic automatic barring gear, including housing, piston, sleeve, guiding valve, piston rod, ratchet, the piston that is slidably connected is coordinated in described housing, fixed operating sleeve cylinder in piston, coordinating the guiding valve that is slidably connected in sleeve, piston connects ratchet by piston rod, equipped with spring between piston lower surface and housing lower end inner bottom surface；Between described piston upper end and enclosure interior upper end, there is F chamber, there is between described piston and enclosure interior lower end E chamber, it is provided with annular channel in described housing, there is above described guiding valve B chamber, the lower section of guiding valve has Y chamber, described shell inner hole connection oil inlet joint, annular groove is had in the middle part of described outside piston cylinder, radial hole it is provided with between annular groove and piston inner hole, annular compartment is formed between annular groove and inner walls, on in described piston, bottom is communicated with F chamber and the intercommunicating pore of E chamber respectively, two annular oil grooves are had in the outside cylinder of described sleeve, radial hole it is provided with between oil groove and the endoporus of sleeve, lower cartridge is communicated with in sleeve, the through hole of outer wall, two oil grooves of sleeve respectively with annular compartment and F chamber；The outside cylinder upper and lower part of described guiding valve is provided with an annular groove respectively, the annular groove on top connects the centre bore in piston rod and oil outlet by through hole and guiding valve centre bore, and annular compartment connects the Y chamber below guiding valve by piston with the radial hole in sleeve.
When guiding valve moves down into extreme position in the effect of oil pressure difference, described guiding valve cuts off the supply of hydraulic oil below piston, the intercommunicating pore making lubricating oil radial hole in sleeve and piston and upper piston area leads to F chamber above piston, and the lubricating oil of the E chamber below the piston intercommunicating pore of bottom, piston side through hole in piston lead to the centre bore in piston rod and oil outlet.
When piston moves down, guiding valve is under the effect of oil pressure, and guiding valve moves on to lower extreme position, blocks lubricating oil and enters F chamber, and the lubricating oil of F chamber enters E chamber, and piston moves up；When piston moves up, the lubricating oil of F chamber leads to the centre bore in piston rod and oil outlet by the through hole on the radial hole on the intercommunicating pore of upper piston area, sleeve and guiding valve top；When in F chamber, oil pressure declines, and under the effect of spring-return power, piston moves up.
Described piston moves down under power lubricating oil pressure effect, and the ratchet being arranged in piston rod crotch moves down, and the ratchet fastened with axle is meshed, and pushes down on ratchet, makes turbine rotor rotate.
The beneficial effects of the utility model are:
This hydraulic pressure automatic barring gear, it is not necessary to manual hand manipulation, it is not necessary to extra power consumption.Moment of torsion is big, volume is little, simple in construction, it is easy to installation and removal.Also extend to more Steam Turbine rotor and other rotary machine rotors.
Accompanying drawing explanation
Fig. 1 is existing Manual jigger mechanism schematic diagram；
Fig. 2 is the structure sectional view of small-sized hydraulic automatic barring gear of the present utility model；
Fig. 3 is the work process principle schematic of small-sized hydraulic automatic barring gear of the present utility model.
Detailed description of the invention
The utility model is described in further detail with embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, a kind of small-sized hydraulic automatic barring gear, including oil inlet joint 1, piston 2, sleeve 3, guiding valve 4, housing 5, piston rod, ratchet 6, centre bore and oil outlet 7.
Coordinating the piston 2 that is slidably connected, fixed operating sleeve cylinder 3 in piston 2 in housing 5, coordinate the guiding valve 4 that is slidably connected in sleeve 3, piston 2 lower end connects ratchet by piston rod, equipped with spring between piston 2 lower surface and housing 5 lower end inner bottom surface；Between piston 2 upper end and housing 5 inner upper end, there is F chamber, between described piston 2 lower end and housing 5 interior lower end, there is E chamber, annular channel R it is provided with in housing 5, there is above guiding valve 4 B chamber, the lower section of guiding valve 4 has Y chamber, described housing 5 endoporus connection oil inlet joint 1, annular groove is had in the middle part of piston 2 exterior circular column, it is provided with radial hole between annular groove and piston 2 endoporus, annular compartment A is formed between annular groove and housing 5 inwall, on in described piston 2, bottom is communicated with F chamber and the intercommunicating pore of E chamber respectively, two annular oil grooves are had in the outside cylinder of sleeve 3, it is provided with radial hole between the endoporus of oil groove and sleeve 3, sleeve 3 bottom is communicated with in sleeve 3, the through hole of outer wall, two oil grooves of sleeve 3 respectively with annular compartment A and F chamber；The outside cylinder upper and lower part of described guiding valve 4 is provided with an annular groove respectively, the annular groove on top connects the centre bore in piston rod and oil outlet 7 by through hole and guiding valve 4 centre bore, and annular compartment A connects the Y chamber below guiding valve 4 by piston 2 with the radial hole in sleeve 3.
As it is shown on figure 3, during hydraulic jigger device work, high pressure lubricating oil is fed to the annular compartment A of piston 2 through oil inlet joint 1, then the radial hole in piston and sleeve 3 enters the lower section Y chamber of guiding valve 4；Annular channel R in the lubricating oil successively open upper channel in sleeve 3, the intercommunicating pore on piston 2 top, housing 5, the intercommunicating pore of piston lower portion 2, the B chamber above guiding valve 4 is connected with the centre bore in piston rod and oil outlet 7.
Guiding valve 4 moves down into extreme position in the effect of oil pressure difference, cut off the supply of hydraulic oil below piston 2, open lubricating oil hole in sleeve 3 and piston 2, F chamber above piston 2, and the centre bore that the lubricating oil of the E chamber below piston 2 is in piston rod is connected with discharge.Then piston 2 moves down under power lubricating oil pressure effect, and the ratchet being arranged in piston rod crotch moves down the most therewith, and the ratchet fastened with axle is meshed, and pushes down on ratchet, so that rotor rotates, completes impulse stroke.Piston 2 moves down, and guiding valve 4 is under the effect of oil pressure, and guiding valve 4 moves on to lower extreme position, has blocked lubricating oil and has entered F chamber, and the lubricating oil of F chamber enters E chamber, and piston 2 begins to move up.When piston 2 moves up, the lubricating oil of F chamber is connected with discharge by the hole on piston, sleeve and guiding valve top.In F chamber, oil pressure declines, and under the effect of spring-return power, piston 2 moves up.This Posterior circle repeats.
After this utility model utilizes steam turbine prestart and shuts down, the electric oil pump work that need to start of jiggering provides the oil pressure hydraulic drive of about 0.8MPa; promote after realizing ratchet rule action and be arranged on the ratchet structure in turbine rotor system, thus realize rotor and rotate jiggering.
Claims (4)
1. a small-sized hydraulic automatic barring gear, including housing (5), piston (2), sleeve (3), guiding valve (4), piston rod, ratchet, it is characterized in that: in described housing (5), coordinate the piston (2) that is slidably connected, piston (2) interior fixed operating sleeve cylinder (3), the guiding valve (4) that is slidably connected is coordinated in sleeve (3), piston (2) lower end connects ratchet by piston rod, equipped with spring between piston (2) lower surface and housing (5) lower end inner bottom surface；nullBetween described piston (2) upper end and housing (5) inner upper end, there is F chamber，Between described piston (2) lower end and housing (5) interior lower end, there is E chamber，Annular channel (R) it is provided with in described housing (5)，Described guiding valve (4) top has B chamber，The lower section of guiding valve (4) has Y chamber，Described housing 5 endoporus connection oil inlet joint (1)，Annular groove is had in the middle part of described piston (2) exterior circular column，It is provided with radial hole between annular groove and piston (2) endoporus，Annular compartment (A) is formed between annular groove and housing (5) inwall，On in described piston (2)、Bottom is communicated with F chamber and the intercommunicating pore of E chamber respectively，Two annular oil grooves are had in the outside cylinder of described sleeve (3)，It is provided with radial hole between the endoporus of oil groove and sleeve (3)，Sleeve (3) bottom is communicated with in sleeve (3)、The through hole of outer wall，Two oil grooves of sleeve (3) respectively with annular compartment (A) and F chamber；The outside cylinder upper and lower part of described guiding valve (4) is provided with an annular groove respectively, the annular groove on top connects the centre bore in piston rod and oil outlet (7) by through hole and guiding valve (4) centre bore, and annular compartment (A) connects the Y chamber of guiding valve (4) lower section by piston (2) with the radial hole in sleeve (3).
Small-sized hydraulic automatic barring gear the most according to claim 1, it is characterized in that: when guiding valve (4) moves down into extreme position in the effect of oil pressure difference, described guiding valve (4) cuts off the import of piston (2) lower section hydraulic oil, the intercommunicating pore making lubricating oil radial hole in sleeve (3) and piston (2) and piston (2) top leads to piston (2) top F chamber, and the lubricating oil of the E chamber of piston (2) the lower section intercommunicating pore of bottom, piston (2) lower end side through hole in piston (2) lead to the centre bore in piston rod and oil outlet (7).
Small-sized hydraulic automatic barring gear the most according to claim 1, it is characterised in that: when piston (2) moves down, and guiding valve (4) is under the effect of oil pressure, guiding valve (4) moves on to lower extreme position, blocking lubricating oil and enter F chamber, the lubricating oil of F chamber enters E chamber, and piston (2) moves up；When piston (2) moves up, lubricating oil in F chamber leads to the centre bore in piston rod and oil outlet (7) by the through hole on the radial hole on the intercommunicating pore of upper piston area, sleeve (3) and guiding valve top, when in F chamber, oil pressure declines, under the effect of spring-return power, piston (2) moves up.
Small-sized hydraulic automatic barring gear the most according to claim 1, it is characterized in that: described piston (2) moves down under power lubricating oil pressure effect, the ratchet being arranged in piston rod crotch moves down, the ratchet fastened with axle is meshed, push down on ratchet, make turbine rotor rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620372457.XU CN205618208U (en) | 2016-04-28 | 2016-04-28 | Small -size hydraulic pressure automatic barring gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620372457.XU CN205618208U (en) | 2016-04-28 | 2016-04-28 | Small -size hydraulic pressure automatic barring gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205618208U true CN205618208U (en) | 2016-10-05 |
Family
ID=57028637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620372457.XU Withdrawn - After Issue CN205618208U (en) | 2016-04-28 | 2016-04-28 | Small -size hydraulic pressure automatic barring gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205618208U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736078A (en) * | 2016-04-28 | 2016-07-06 | 中国船舶重工集团公司第七0四研究所 | Small hydraulic automatic jiggering device |
-
2016
- 2016-04-28 CN CN201620372457.XU patent/CN205618208U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105736078A (en) * | 2016-04-28 | 2016-07-06 | 中国船舶重工集团公司第七0四研究所 | Small hydraulic automatic jiggering device |
| CN105736078B (en) * | 2016-04-28 | 2017-04-26 | 中国船舶重工集团公司第七0四研究所 | Small hydraulic automatic jiggering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161005 Effective date of abandoning: 20170426 |
|
| AV01 | Patent right actively abandoned |