CN206550954U - Holding tool is returned in the dismounting of nuclear island axial flow type fan impeller - Google Patents
Holding tool is returned in the dismounting of nuclear island axial flow type fan impeller Download PDFInfo
- Publication number
- CN206550954U CN206550954U CN201720025476.XU CN201720025476U CN206550954U CN 206550954 U CN206550954 U CN 206550954U CN 201720025476 U CN201720025476 U CN 201720025476U CN 206550954 U CN206550954 U CN 206550954U
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- China
- Prior art keywords
- fan impeller
- hole
- draught fan
- pressing plate
- impeller
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Abstract
The utility model belongs to the dismounting maintenance field of axial fan.To solve because space and limited view, draught fan impeller dismount difficulty with fan shaft, time-consuming, and may damage the technical problem of draught fan impeller, and holding tool is returned the utility model proposes a kind of dismounting for nuclear island axial flow type fan impeller.Holding tool is returned in dismounting for nuclear island axial flow type fan impeller includes pressing plate, with sleeve screw rod and hydraulic jack；When dismantling draught fan impeller, hydraulic jack is held out against between pressing plate and fan shaft, and fan shaft is ejected to the axis hole of draught fan impeller with hydraulic jack；Pressing plate is provided with central through hole, when draught fan impeller returns dress, with sleeve screw rod through central through hole and the screwed hole at precession fan shaft center, by tightening the axis hole that center nut makes fan shaft enter draught fan impeller.It is of the present utility model to dismantle back holding tool, realize and it is effectively dismounted in the case of not damaging draught fan impeller in small space.
Description
Technical field
The utility model is related to the dismounting maintenance field of nuclear island, axial fan used in nuclear auxiliary building, particularly relates to
And holding tool is returned in a kind of dismounting of axial flow type fan impeller for used in nuclear island, nuclear auxiliary building.
Background technology
Axial fan is largely used in nuclear power plant nuclear island, nuclear auxiliary building, wherein there is 4 axle streams in RRM systems
There are 4 in formula blower fan, ECV systems, there are 2 in EVF systems, there are 2 in EBA systems, there are 2 in ETY systems, in DVW systems
There are 6, there are 5 in EVR systems.
Wherein, at present when being dismantled to draught fan impeller, mainly horse traction is drawn to pull out draught fan impeller using machinery.But,
Due to draught fan impeller different sizes, limited by nuclear island space, the location of most of axial fan all narrow spaces, it enters
The mouth length that is flexible coupling only has 150-200mm, therefore, and maintainer is difficult to from front entrance during work, so not good in the visual field
In the case of operate, it is likely that draught fan impeller is drawn inclined, gently then pulled fan shaft, weight then kill by draught fan impeller and fan shaft.This
Outside, when returning dress draught fan impeller, generally tap the method for draught fan impeller to make fan shaft put into impeller shaft hole using copper rod, equally
Limited by space, staff can not make upper power when being tapped using copper rod, and it is difficult that draught fan impeller returns dress.And draught fan impeller with
Fan shaft assembling must use gas welding heating just to can be removably mounted when tighter, must dismount airduct using gas welding, time-consuming.Therefore,
There is problems with when being dismantled and returned dress in the current impeller to the axial fan used in nuclear island, nuclear auxiliary building：
1st, due to space and limited view, horse and copper rod is drawn impeller to be drawn into inclined when being dismounted to draught fan impeller using machinery
So as to damage fan shaft.
2nd, when draught fan impeller and tighter fan shaft assembling, it is impossible to effectively dismount impeller, so that gas welding must be used to heat leaf
Wheel method, because part fan is located at dose of radiation upper zone, this maintenance extends the activity duration, causes staff institute
Raying dosage increases, to the healthy unfavorable of staff.
Utility model content
When being dismantled and returned dress to solve the current impeller to the axial fan used in nuclear island, nuclear auxiliary building, by
In the location of axial fan narrow space, limited view, and it is difficult draught fan impeller is dismounted with fan shaft, and time-consuming,
And the technical problem of draught fan impeller and fan shaft may be damaged, returned the utility model proposes a kind of dismounting of axial flow fan vane wheel
The instrument of dress.
Holding tool is returned in the dismounting for being used for nuclear island axial flow type fan impeller includes pressing plate 1, with sleeve screw rod 6 and hydraulic jack
2；Multiple circumferential through-holes 11 are along the circumferential direction provided with the end face of the pressing plate 1, center is provided with central through hole (12)；Blower fan leaf
The end face of wheel 3 is provided with screwed hole corresponding with the position of circumferential through-hole 11, be provided with the end face center of fan shaft 4 with it is described
The corresponding screwed hole in central through hole (12) position；It is described to be passed through with sleeve screw rod 6 on the pressing plate 1 when dismantling the draught fan impeller 3
Circumferential through-hole 11 and screwed hole described in precession on the end face of draught fan impeller 3, the hydraulic jack 2 is arranged on the pressing plate
Between 1 and fan shaft 4, described with precession nut 5 on sleeve screw rod 6, the hydraulic jack 2 is pushed up by the pressing plate 1
On the end face of the fan shaft 4, and the fan shaft 4 is ejected axis hole by the hydraulic coupling exported with the hydraulic jack 2；Return dress
During the draught fan impeller 3, the pressing plate 1 against and be fixed on the end face of the draught fan impeller 3, it is described to be passed through with sleeve screw rod 6
The screwed hole of the center of fan shaft 4 described in the central through hole (12) and precession, by screwing center nut 7, drive described in match somebody with somebody
Sleeve screw rod 6 is moved, and then drives the fan shaft 4 into the axis hole of the draught fan impeller 3.
Preferably, the end face of pressing plate 1 is provided with least four circumferential through-hole 11, and the width of the circumferential through-hole 11 is equal
For 17mm, length is 45mm.
It is preferred that, the circumferential through-hole 11 on the end face of pressing plate 1 is along the circumferential direction uniform.
It is preferred that, when dismantling the draught fan impeller 3, the circumferential through-hole passed through with sleeve screw rod 6 on the end face of pressing plate 1
11 and it is arranged symmetrically.
It is preferred that, before the draught fan impeller 3 is dismantled, the fixing device of the draught fan impeller 3 include clamping screw and
Pad, the pad is located at the end face of the draught fan impeller 3 and the fan shaft 4 and connected by clamping screw with the fan shaft 4
Connect, for fixing the draught fan impeller 3, prevent the fan shaft 4 vibration axially outward.
When dismantling back holding tool progress draught fan impeller dismounting using nuclear island axial flow type fan impeller, following step is specifically included
Suddenly：
The first step, the clamping screw and pad for removing draught fan impeller 3, the pad are located at the outer of draught fan impeller 3 and fan shaft 4
Hold and be connected by clamping screw with fan shaft 4, for fixing draught fan impeller 3, prevent the vibration axially outward of fan shaft 4；
Second step, according to the upper screwed hole size of draught fan impeller 3 select size matching match somebody with somebody sleeve screw rod 6, with sleeve screw rod 6 for pair
Claim arrangement, and installation is tightened on draught fan impeller 3, then, will pass through the corresponding circumferential through-hole 11 of the surrounding of pressing plate 1 with sleeve screw rod 6,
Pressing plate 1 is attached to on sleeve screw rod 6, hydraulic jack 2 is installed in the middle of fan shaft 4 and pressing plate, positioned at that one end of pressing plate 1
With installing nut 5 on sleeve screw rod 6 and tightening, nut 5 promotes pressing plate 1 that hydraulic jack 2 is withstood to the end face of fan shaft 4, twists
Note, by the horizontal level leveling of pressing plate 1, hydraulic jack 2 and fan shaft 4, making these three element coaxials during tight nut 5
Arrangement；
3rd step, push the axis hole that hydraulic jack 2 ejects draught fan impeller 3 draught fan impeller 3 from fan shaft 4.
When dismantling back holding tool progress draught fan impeller time dress using nuclear island axial flow type fan impeller, following step is specifically included
Suddenly：
The first step, first draught fan impeller 3 is attached on fan shaft 4 and gently strikes tight with copper rod, make a part for fan shaft 4
Length is entered in the axis hole of draught fan impeller 3；
Second step, installing and tightening with sleeve screw rod 6 according to the selection size matching of the screwed hole of centre size of fan shaft 4, so
The central through hole (12) of pressing plate 1 is passed through with sleeve screw rod 6 afterwards, pressing plate 1 and the installation center nut 7 on sleeve screw rod 6 are installed, made
Tightened, will be moved in the rundown process of center nut 7 with dynamic pressure plate 1 and draught fan impeller 3 to the shaft end of fan shaft 4 with center nut 7,
Fan shaft 4 is set to enter in the axis hole of draught fan impeller 3；
After 3rd step, draught fan impeller 3 are installed in place, are screwed out from the screwed hole of the center line of fan shaft 4 and match somebody with somebody sleeve screw rod 6, and it is extensive
Multiple installation locking pad and bolt, the pad are located at the outer end of draught fan impeller 3 and fan shaft 4 and pass through clamping screw and fan shaft
4 connections, for fixing draught fan impeller 3, prevent the vibration axially outward of fan shaft 4.
Using the utility model proposes dismounting return holding tool, it is to avoid during dismounting draught fan impeller 3, to use machinery to draw horse
Drawing draught fan impeller 3, and avoid and tap draught fan impeller 3 with copper rod when returning dress draught fan impeller 3 and put into fan shaft 4
Impeller shaft hole, so as in small space, simplify the dismounting of draught fan impeller 3 and fan shaft 4, disassembly efficiency is high, and will not damage
Bad draught fan impeller 3 and fan shaft 4.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model impeller demolition process；
Fig. 2 is the structural representation that the utility model impeller returns dress process；
Fig. 3 is the structural representation of the utility model Fig. 1 and Fig. 2 center platen.
Embodiment
Below by an example specifically practiced, it is used for nuclear island axial flow type fan impeller to of the present utility model
Holding tool is dismantled back to be explained in further detail.
As shown in Figure 1, 2, dismantling back holding tool for nuclear island axial flow type fan impeller includes：Pressing plate 1, with sleeve screw rod 6 and
Hydraulic jack 2.
As shown in figure 3,4 circumferential through-holes 11 are along the circumferential direction provided with the end face of pressing plate 1, and this four circumferential through-holes
11 width are 17mm, and length is 45mm.The center of pressing plate 1 offers central through hole 12, the diameter of the central through hole 12
For 17mm.
As shown in Figure 1, 2, the end face of draught fan impeller 3 is provided with the screw thread corresponding with the position of circumferential through-hole 11 on pressing plate 1
Screwed hole corresponding with the position of central through hole 12 is provided with hole, the end face center of fan shaft 4.
As shown in figure 1, during dismounting draught fan impeller 3, the circumferential through-hole 11 and precession blower fan leaf of pressing plate 1 are passed through with sleeve screw rod 6
Screwed hole on the end face of wheel 3.Hydraulic jack 2 is arranged between pressing plate 1 and fan shaft 4, and by with rotation on sleeve screw rod 6
Enter nut 5, promote pressing plate 1 to push up hydraulic jack 2 on the end face of fan shaft 4, then the hydraulic pressure exported by hydraulic jack 2
Power ejects fan shaft 4 from axis hole, so as to complete the dismounting of draught fan impeller 3.
As shown in Fig. 2 return dress draught fan impeller 3 when, pressing plate 1 against and be fixed on the end face of draught fan impeller 3, with sleeve screw rod
6 pass through central through hole 12 and the screwed hole of the center of precession fan shaft 4.By screwing center nut 7, pull and match somebody with somebody the phase of sleeve screw rod 6
Pressing plate 1 is moved along axis hole, so that fan shaft 4 to be pulled in the axis hole of draught fan impeller 3, that realizes draught fan impeller 3 returns dress.
Before dismounting draught fan impeller 3, the fixing device of draught fan impeller 3 includes clamping screw and pad (does not show in figure
Go out), the pad is located at the connecting end surface of draught fan impeller 3 and fan shaft 4 and is connected by clamping screw with fan shaft 4, for solid
Determine draught fan impeller 3, prevent the vibration axially outward of fan shaft 4.
As shown in figure 1, when dismantling back holding tool progress draught fan impeller dismounting using nuclear island axial flow type fan impeller, specific bag
Include following steps：
The first step, the clamping screw and pad (not shown) for removing draught fan impeller 3, the pad are located at draught fan impeller 3
With the connecting end surface of fan shaft 4 and being connected by clamping screw with fan shaft 4, for fixing draught fan impeller 3, fan shaft 4 is prevented
Vibration axially outward.
Second step, first, matches somebody with somebody sleeve screw rod 6, with sleeve screw rod according to what the upper screwed hole size of draught fan impeller 3 selected size matching
6 is are arranged symmetrically, and installation is tightened on draught fan impeller 3.Then, the circumferential through-hole 11 that will be passed through with sleeve screw rod 6 on pressing plate 1,
Pressing plate 1 is attached to on sleeve screw rod 6, hydraulic jack 2 is installed in the middle of fan shaft 4 and pressing plate, positioned at that one end of pressing plate 1
With installing nut 5 on sleeve screw rod 6 and tightening, nut 5 promotes pressing plate 1 that hydraulic jack 2 is withstood to the end face of fan shaft 4, twists
Note, by the horizontal level leveling of pressing plate 1, hydraulic jack 2 and fan shaft 4, making these three element coaxials during tight nut 5
Arrangement.
3rd step, push hydraulic jack 2 and eject draught fan impeller 3 from fan shaft 4.
As shown in Fig. 2 when dismantling back holding tool progress draught fan impeller time dress using nuclear island axial flow type fan impeller, specific bag
Include following steps：
The first step, first draught fan impeller 3 is attached on fan shaft 4 and gently strikes tight with copper rod, make a part for fan shaft 4
Length is entered in the axis hole of draught fan impeller 3.
Second step, be first according to the screwed hole of centre size of fan shaft 4 selection size matching install and twist with sleeve screw rod 6
Tightly.Then the central through hole 12 of pressing plate 1 is passed through with sleeve screw rod 6, pressing plate 1 and the installation center nut 7 on sleeve screw rod 6 are installed,
Tightened, will be moved in the rundown process of center nut 7 with dynamic pressure plate 1 and draught fan impeller 3 to the shaft end of fan shaft 4 using center nut 7
It is dynamic, fan shaft 4 is entered in the axis hole of draught fan impeller 3；
After 3rd step, draught fan impeller 3 are installed in place, are screwed out from the screwed hole of the center line of fan shaft 4 and match somebody with somebody sleeve screw rod 6, and it is extensive
Multiple installation locking pad and bolt, the pad are located at the outer end of draught fan impeller 3 and fan shaft 4 and pass through clamping screw and fan shaft
4 connection (not shown)s, for fixing draught fan impeller 3, prevent the vibration axially outward of fan shaft 4.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to preferred embodiment, those of ordinary skill in the art should
Understand：Still embodiment of the present utility model can be modified or some technical characteristics are equally replaced
Change；Without departing from the spirit of technical solutions of the utility model, it all should cover in the claimed technical scheme of the utility model
Among scope.
Claims (5)
1. holding tool is returned in a kind of dismounting for nuclear island axial flow type fan impeller, it is characterised in that：Including pressing plate (1), with mantle fiber
Bar (6) and hydraulic jack (2)；Multiple circumferential through-holes (11), center are along the circumferential direction provided with the end face of the pressing plate (1)
It is provided with central through hole (12)；The end face of draught fan impeller (3) is provided with screwed hole corresponding with the circumferential through-hole (11) position, wind
Screwed hole corresponding with the central through hole (12) position is provided with the end face center of arbor (4)；Dismantle the draught fan impeller (3)
When, the end face with draught fan impeller (3) described in sleeve screw rod (6) through the circumferential through-hole (11) on the pressing plate (1) and precession
On screwed hole, the hydraulic jack (2) is arranged between the pressing plate (1) and fan shaft (4), matches somebody with somebody sleeve screw rod described
(6) precession nut (5) on, are pushed up the hydraulic jack (2) onto the end face of the fan shaft (4) by the pressing plate (1),
And the fan shaft (4) is ejected axis hole by the hydraulic coupling exported with the hydraulic jack (2)；Return and fill the draught fan impeller (3)
When, the pressing plate (1) against and be fixed on the end face of the draught fan impeller (3), it is described with sleeve screw rod (6) pass through the center
The screwed hole of fan shaft (4) center described in through hole (12) and precession, by screwing center nut (7), drives described with mantle fiber
Bar (6) is mobile, and then drives the fan shaft (4) into the axis hole of the draught fan impeller (3).
2. holding tool is returned in the dismounting according to claim 1 for nuclear island axial flow type fan impeller, it is characterised in that：It is described
Pressing plate (1) end face is provided with least four circumferential through-hole (11), and the circumferential through-hole (11) width is 17mm, and length is equal
For 45mm.
3. holding tool is returned in the dismounting according to claim 2 for nuclear island axial flow type fan impeller, it is characterised in that：It is described
Circumferential through-hole (11) on pressing plate (1) end face is along the circumferential direction uniform.
4. holding tool is returned in the dismounting according to claim 1 for nuclear island axial flow type fan impeller, it is characterised in that：Dismounting
During draught fan impeller (3), it is described with sleeve screw rod (6) through the circumferential through-hole (11) on the pressing plate (1) end face and in pair
Claim arrangement.
5. holding tool is returned in the dismounting according to claim 1 for nuclear island axial flow type fan impeller, it is characterised in that：Tearing open
Unload before the draught fan impeller (3), the fixing device of the draught fan impeller (3) includes clamping screw and pad, and the pad is located at
The end face of the draught fan impeller (3) and the fan shaft (4) is simultaneously connected by clamping screw with the fan shaft (4), for solid
The fixed draught fan impeller (3), prevents the fan shaft (4) vibration axially outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025476.XU CN206550954U (en) | 2017-01-10 | 2017-01-10 | Holding tool is returned in the dismounting of nuclear island axial flow type fan impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720025476.XU CN206550954U (en) | 2017-01-10 | 2017-01-10 | Holding tool is returned in the dismounting of nuclear island axial flow type fan impeller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206550954U true CN206550954U (en) | 2017-10-13 |
Family
ID=60359530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720025476.XU Expired - Fee Related CN206550954U (en) | 2017-01-10 | 2017-01-10 | Holding tool is returned in the dismounting of nuclear island axial flow type fan impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206550954U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209991A (en) * | 2018-11-16 | 2019-01-15 | 四川聚亿重工有限公司 | Impeller locking device for centrifugal compressor |
| CN109737103A (en) * | 2019-02-20 | 2019-05-10 | 苏州众志新环冷却设备有限公司 | Rapid and convenient dismantles impeller unit |
| CN112775894A (en) * | 2020-12-16 | 2021-05-11 | 华能伊敏煤电有限责任公司 | Fan impeller hub assembly and disassembly tools |
| CN113695888A (en) * | 2021-08-30 | 2021-11-26 | 杭州中能汽轮动力有限公司 | Impeller dismounting device based on cantilever centrifugal compressor and use method thereof |
-
2017
- 2017-01-10 CN CN201720025476.XU patent/CN206550954U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209991A (en) * | 2018-11-16 | 2019-01-15 | 四川聚亿重工有限公司 | Impeller locking device for centrifugal compressor |
| CN109737103A (en) * | 2019-02-20 | 2019-05-10 | 苏州众志新环冷却设备有限公司 | Rapid and convenient dismantles impeller unit |
| CN112775894A (en) * | 2020-12-16 | 2021-05-11 | 华能伊敏煤电有限责任公司 | Fan impeller hub assembly and disassembly tools |
| CN113695888A (en) * | 2021-08-30 | 2021-11-26 | 杭州中能汽轮动力有限公司 | Impeller dismounting device based on cantilever centrifugal compressor and use method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171013 Termination date: 20220110 |