CN205532733U - Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device - Google Patents
Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device Download PDFInfo
- Publication number
- CN205532733U CN205532733U CN201620327714.8U CN201620327714U CN205532733U CN 205532733 U CN205532733 U CN 205532733U CN 201620327714 U CN201620327714 U CN 201620327714U CN 205532733 U CN205532733 U CN 205532733U
- Authority
- CN
- China
- Prior art keywords
- pull
- push
- valve shaft
- support bar
- pressure valve
- 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.)
- Active
Links
Landscapes
- Lift Valve (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The utility model discloses a nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device, include and be used for placing on one side of the valve shaft of middling pressure valve and span press the valve shaft hold the room the bracing piece, be used for horizontal symmetry to install two screw external members on the bearing room and be used for connecting the valve shaft is with the push -and -pull the push -pull screw of valve shaft, two the screw external member is worn to establish respectively and is fixed on the both ends of bracing piece, the push -pull screw is worn to establish the central point of bracing piece puts the department, and relative bracing piece axially movable. The utility model is used for install and use on the middling pressure valve, according to total its center adjustment of drunkenness volume push -and -pull valve shaft messenger of valve shaft, ensure that the valve does not have the bite in a flexible way, can be used to prevent in advance, reduce possible risk, avoid the serious consequence, improve the fail safe nature of unit, improve economic benefits to feed back many bases and improve overhaul technology on the same equipment, avoid the same trouble to appear.
Description
Technical field
This utility model relates to a kind of nuclear power station middle auxiliary device, particularly relates to a kind of nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull and puts middle device.
Background technology
Nuclear power station half speed turbine intermediate pressure cylinder air intake valve designs for butterfly valve on original design, ridge Australia second phase nuclear power station have selected mechanical seal and instead of former " labyrinth type " sealing, and the first as the whole world, the bearing that SKF model is C3140K/HA3C4L5DA and C3140K/HA3C4L5DA that drive end and anti-drive end are respectively adopted.
In nuclear power station, steam valve for steam turbine seals, and commonly used is " labyrinth type " gland seal system.Owing to during unit operation, vapor (steam) temperature is higher, impact on equipment thermal expansion is bigger, in addition the particularity of valve design structure, the valve shaft play that valve exists about 4-6mm, indivedual valve shifting amount is made to reach about 10mm, the superposition of both factors, if flap is placed in one end in valve maintenance process, butterfly valve flap is easy to produce at run duration and valve chamber touch mill, causes bite or stuck, and therefore the PROCESS FOR TREATMENT in maintenance installation process is particularly significant.
Utility model content
The technical problems to be solved in the utility model is, it is provided that a kind of carry out valve shaft during push-and-pull puts, it is ensured that middle device is put in valve nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull without bite flexibly.
This utility model solves its technical problem and be the technical scheme is that middle device is put in a kind of nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull of offer, including for being placed on the valve shaft side of middle pressure valve and across the support bar of described pressure valve bearing chamber, two thread complete sets being arranged on described bearing chamber for horizontal symmetry and for connecting the described valve shaft push-pull screw with valve shaft described in push-and-pull；
Two described thread complete sets wear respectively and are fixed on the two ends of described support bar；Described push-pull screw is located in the center position of described support bar, and the most described support bar is axially movable.
Preferably, the opposite end of described support bar is respectively equipped with fixing hole；
The one end fits of described thread complete set is in described fixing hole, and is fixed on described support bar by fastening bolt；The other end of described thread complete set is positioned at outside described fixing hole, to coordinate with the bolt on described bearing chamber.
Preferably, it is additionally provided with pad between described fastening bolt and described support bar surface.
Preferably, the center position of described support bar is provided with centre bore, and described push-pull screw is located in described centre bore, and its first relative end and the second end stretch out described centre bore respectively；
First end of described push-pull screw and described thread complete set are positioned at the one end outside described fixing hole in the same direction.
Preferably, the first end of described push-pull screw is additionally provided with the fixing nut being fixedly connected on by this push-pull screw on described valve shaft near end.
Preferably, the rotation nut that middle device also includes being respectively sleeved on described push-pull screw the first end and the second end is put in this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull, and respectively first rotates nut and second rotates nut.
Preferably, this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull is put middle device and is also included being respectively sleeved at the first slide bearing assembly on the first end of described push-pull screw and the second end and the second slide bearing assembly；
Described first slide bearing assembly rotates between nut and described support bar described first and is connected on described support bar；Described second slide bearing assembly rotates between nut and described support bar described second and is connected on described support bar.
Preferably, described first slide bearing assembly and described first rotates and is provided with the first pad between nut, and described second slide bearing assembly and described second rotates and is provided with the second pad between nut.
Preferably, described first pad and the second pad are hemispherical pad.
Preferably, described support bar is column steel part.
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull of the present utility model, is used for being arranged on middle pressure valve use, in making it put according to valve shaft total shifting amount push-and-pull valve shaft, it is ensured that valve is flexibly without bite；Can be used for preventing in advance, reduce possible risk, it is to avoid serious consequence, improve the security reliability of unit, increase economic efficiency, and feed back to many bases on identical device, improve maintenance craft, it is to avoid same fault appearance.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the cross-sectional view that middle device is put in the nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull of this utility model one embodiment.
Detailed description of the invention
In order to be more clearly understood from technical characteristic of the present utility model, purpose and effect, now comparison accompanying drawing describes detailed description of the invention of the present utility model in detail.
As it is shown in figure 1, middle device is put in the nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull of this utility model one embodiment, including 10, two thread complete sets 20 of support bar and push-pull screw 30.On middle pressure valve, support bar 10 is for being placed on the valve shaft side of middle pressure valve and across pressure valve bearing chamber, and two thread complete sets 20 are arranged on bearing chamber for horizontal symmetry, and two thread complete sets 20 wear respectively and are fixed on the two ends of support bar 10；Push-pull screw 30 is located in the center position of support bar 10, and relative support bar 10 is axially movable, and is used for connecting valve shaft with push-and-pull valve shaft, in making valve shaft put.
Wherein, support bar 10 is relatively fixed with middle pressure valve by thread complete set 20, and as the mobile support bar of push-pull screw 30.The opposite end of support bar 10 is respectively equipped with fixing hole 11, coordinates for thread complete set 20.Additionally, the center position of support bar 10 is provided with centre bore 12, for wearing of push-pull screw 30.
Support bar 10 is preferably column steel part, and length is more than the internal diameter of middle pressure valve upper bearing (metal) room.
Two thread complete sets 20 coordinate with the fixing hole 11 on support bar 10 and are arranged on bearing chamber respectively, thus are fixedly mounted on middle pressure valve by support bar 10.
Specifically, the one end fits of thread complete set 20 is in fixing hole 11, and is fixed on support bar 10 by fastening bolt 21.Rotate the surface to support bar 10 for reduction fastening bolt 21 and cause abrasion, and play cushioning effect, between fastening bolt 21 and support bar 10 surface, be additionally provided with pad 22.The preferred annular gasket of pad 22.
The other end of thread complete set 20 is positioned at outside fixing hole 11, extends to middle pressure valve direction, to coordinate with the bolt on bearing chamber.
Push-pull screw 30 is located in the centre bore 12 of support bar 10, between two thread complete sets 20.The first end 31 and the second end 32 that push-pull screw 30 is relative stretch out centre bore 12 respectively.Wherein, the first end 31 of push-pull screw 30 with one end being positioned at outside fixing hole 12 of thread complete set 20 in the same direction, all extends to middle pressure valve direction.On middle pressure valve, the first end 31 of push-pull screw 30 is fixedly connected on valve shaft so that push-pull screw 30 is relatively fixed with valve shaft.By the first end 31 or the second end 32 of rotating sliding screw rod 30, make push-pull screw 30 relative support bar 10 to away from or move near the direction of middle pressure valve, drive axially moving back and forth of valve shaft.
First end 31 of push-pull screw 30 is additionally provided with fixing nut 33 near end, for coordinating with valve shaft, is fixed by this push-pull screw 30 and connects and be locked on valve shaft.
Further, the rotation nut that middle device also includes being respectively sleeved on push-pull screw 30 first end 31 and the second end 32 is put in this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull, it is respectively the first rotation nut 41 and second and rotates nut 42, rotate nut 42 by rotating this first rotation nut 41 or second, drive push-pull screw 30 to move axially under threaded function.
Further, this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull is put middle device and is also included being respectively sleeved at the first slide bearing assembly 51 and the second slide bearing assembly 52 on the first end 31 of push-pull screw 30 and the second end 32.First slide bearing assembly 51 rotates between nut 41 and support bar 10 first and is connected on support bar 10；Second slide bearing assembly 52 rotates between nut 42 and support bar 10 second and is connected on support bar 10.
Wherein, the first slide bearing assembly 51 and the second slide bearing assembly 52 can be locked on push-pull screw 30 by nut respectively gently.This first slide bearing assembly 51 and setting of the second slide bearing assembly 52, substantially reduce the resistance during push-and-pull valve shaft.
Additionally, between the first slide bearing assembly 51 and the first rotation nut 41, the first pad 61 can also be set, second pad 62 can be set between the second slide bearing assembly 52 and the second rotation nut 42, reduce the abrasion rotating nut rotation to slide bearing assembly.First pad 61 and the second pad 62 are the most preferably hemispherical pad.
Preferably, first rotates nut 41 can include two or more nuts, wherein the nut near the first slide bearing assembly 51 can be used for gently locking on push-pull screw 30 by the first slide bearing assembly 51, and other nut can be used for rotating and moves ordering about push-pull screw 30；In like manner, second rotates nut 42 may also comprise two or more nut, and a nut is for gently locking at push-pull screw 30 by the second slide bearing assembly 52, and other nut can be used for rotating and moves ordering about push-pull screw 30.
When this utility model uses, first two thread complete set 20 horizontal symmetry are arranged on the bearing chamber of middle pressure valve, the two ends correspondence of support bar 10 is sleeved on two thread complete sets 20, and will be fixed between support bar 10 and thread complete set 20 with fastening bolt 21 and pad 22.Push-pull screw 30 is pierced into the centre bore 12 of support bar 10 again, on first end 31 and the second end 32 of push-pull screw 30, is set with the first slide bearing assembly 51 respectively and the second slide bearing assembly 52 and first rotates nut 41 and the second rotation nut 42.First end 31 of push-pull screw 30 is fixedly connected on valve shaft and locks with nut 33.
Set up 0-10mm long range dial gage, make indicator be perpendicularly oriented to valve shaft end face.Push-and-pull valve shaft measures total shifting amount of valve shaft, and valve shaft drive end is placed in the position of S (line shaft is altered)/3+1.25 by push-and-pull operation.As a example by push shaft, during operation, unclamping the second rotation nut 42, (see) that turn first rotates nut 41 counterclockwise in the face of valve direction, push-pull screw 30 moves to promote valve shaft under the effect of screw thread.During pulling shaft, then unclamping the first rotation nut 41, turn clockwise second rotates nut 42, and push-pull screw 30 is mobile under the effect of screw thread pulls valve shaft.
After completing during the push-and-pull of valve shaft is put, drive end bearing is installed, non-driven-end bearing is installed and confirms that race ring is less than outer ring 1-2mm；Install in the range of remaining part hub disk movable valve confirms 360 ° flexibly without bite.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every equivalent structure utilizing this utility model description and accompanying drawing content to be made or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical fields, the most in like manner it is included in scope of patent protection of the present utility model.
Claims (10)
1. middle device is put in a nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull, it is characterized in that, including for being placed on the valve shaft side of middle pressure valve and across the support bar (10) of described pressure valve bearing chamber, two thread complete sets (20) being arranged on described bearing chamber for horizontal symmetry and for connecting the described valve shaft push-pull screw (30) with valve shaft described in push-and-pull；
Two described thread complete sets (20) wear respectively and are fixed on the two ends of described support bar (10)；Described push-pull screw (30) is located in the center position of described support bar (10), and the most described support bar (10) is axially movable.
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 1, it is characterised in that the opposite end of described support bar (10) is respectively equipped with fixing hole (11)；
The one end fits of described thread complete set (20) is in described fixing hole (11), and is fixed on described support bar (10) by fastening bolt (21)；The other end of described thread complete set (20) is positioned at described fixing hole (11) outward, to coordinate with the bolt on described bearing chamber.
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 2, it is characterised in that be additionally provided with pad (22) between described fastening bolt (21) and described support bar (10) surface.
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 2, it is characterized in that, the center position of described support bar (10) is provided with centre bore (12), described push-pull screw (30) is located in described centre bore (12), and its relative the first end (31) and the second end (32) stretch out described centre bore (12) respectively；
First end (31) of described push-pull screw (30) and described thread complete set (20) are positioned at described fixing hole (11) one end outward in the same direction.
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 4, it is characterized in that, first end (31) of described push-pull screw (30) is additionally provided with, near end, the fixing nut (33) being fixedly connected on described valve shaft by this push-pull screw (30).
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 4, it is characterized in that, the rotation nut that middle device also includes being respectively sleeved on described push-pull screw (30) first end (31) and the second end (32) is put in this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull, and respectively first rotates nut (41) and second rotates nut (42).
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 6, it is characterized in that, this nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull is put middle device and is also included being respectively sleeved at the first slide bearing assembly (51) on first end (31) of described push-pull screw (30) and the second end (32) and the second slide bearing assembly (52)；
Described first slide bearing assembly (51) is positioned at described first and rotates between nut (41) and described support bar (10) and be connected on described support bar (10)；Described second slide bearing assembly (52) is positioned at described second and rotates between nut (42) and described support bar (10) and be connected on described support bar (10).
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 7, it is characterized in that, described first slide bearing assembly (51) and described first rotates and is provided with the first pad (61) between nut (41), and described second slide bearing assembly (52) and described second rotates and is provided with the second pad (62) between nut (42).
Middle device is put in nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull the most according to claim 8, it is characterised in that described first pad (61) and the second pad (62) are hemispherical pad.
10. put middle device according to the nuclear power station half speed turbine middle pressure valve valve shaft push-and-pull described in any one of claim 1-9, it is characterised in that described support bar (10) is column steel part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620327714.8U CN205532733U (en) | 2016-04-18 | 2016-04-18 | Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620327714.8U CN205532733U (en) | 2016-04-18 | 2016-04-18 | Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205532733U true CN205532733U (en) | 2016-08-31 |
Family
ID=56793716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620327714.8U Active CN205532733U (en) | 2016-04-18 | 2016-04-18 | Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205532733U (en) |
-
2016
- 2016-04-18 CN CN201620327714.8U patent/CN205532733U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2975156C (en) | Multi-way valve | |
| CN110657308A (en) | Combined multi-way end face sealing rotary compensator | |
| CN205532733U (en) | Nuclear power station half speed turbine middling pressure valve valve shaft push -and -pull center adjustment device | |
| CN204705173U (en) | Seal of rotary kiln structure | |
| CN104696520B (en) | Follow-up double mechanical seal for kettle | |
| CN205741885U (en) | A kind of pier stud | |
| CN201618582U (en) | Rubber flexible sealing device for middle-speed mill base | |
| CN202545182U (en) | Dry gas seal for synthesis gas compressor | |
| CN201925513U (en) | Top mounted ball valve of inner-propped compound seal forged steel | |
| CN209164402U (en) | A kind of unmanned helicopter tail driving shaft support device | |
| CN103899871A (en) | Anti-explosion and high-pressure-resisting rotation compensator | |
| CN203594785U (en) | Follow-up double mechanical seal for kettle | |
| CN205172956U (en) | Water ring vacuum pump's bearing frame structure that makes things convenient for clearance adjustment | |
| CN202851686U (en) | Improved vibrating screen bearing box | |
| CN207364525U (en) | A kind of wear-resisting whirl compensator without acceptance of persons | |
| CN105275816A (en) | Bearing seat structure facilitating gap adjustment of water ring vacuum pump | |
| CN204253627U (en) | Waterproof type high-speed precision bearing | |
| CN209146270U (en) | A kind of mounting structure of horizontal lathe spindle belt pulley | |
| CN203146576U (en) | Slewing bearing of zero clearance raceway and slewing driving device of zero clearance raceway | |
| CN103775273B (en) | A kind of RPT type hydraulic turbine main shaft sealing device | |
| CN203560310U (en) | Reamer bearing seat | |
| CN202418704U (en) | Mechanical locking device for leakage stopping ring of large-diameter valve | |
| CN102522845A (en) | Motor bearing apparatus with sleeve | |
| CN202325709U (en) | Stop structure of angular ring of steam room of high temperature and high pressure turbine | |
| CN201661599U (en) | Novel external spherical ball bearing with concentric cover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |