CN107673271A - Maintenance tool for main steam isolation valve of nuclear power plant - Google Patents
Maintenance tool for main steam isolation valve of nuclear power plant Download PDFInfo
- Publication number
- CN107673271A CN107673271A CN201711009866.9A CN201711009866A CN107673271A CN 107673271 A CN107673271 A CN 107673271A CN 201711009866 A CN201711009866 A CN 201711009866A CN 107673271 A CN107673271 A CN 107673271A
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- Prior art keywords
- support body
- power plant
- nuclear power
- main steam
- isolation valve
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- 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.)
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- 238000002955 isolation Methods 0.000 title claims abstract description 67
- 238000012423 maintenance Methods 0.000 title claims abstract description 34
- 239000007779 soft material Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 11
- 239000000725 suspension Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/10—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks
- B66F7/12—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks
- B66F7/14—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported directly by jacks by mechanical jacks screw operated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21C—NUCLEAR REACTORS
- G21C17/00—Monitoring; Testing ; Maintaining
- G21C17/017—Inspection or maintenance of pipe-lines or tubes in nuclear installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- General Engineering & Computer Science (AREA)
- High Energy & Nuclear Physics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift Valve (AREA)
Abstract
The present invention provides a kind of maintenance tool for main steam isolation valve of nuclear power plant, including：Support body, revolution support body, device for revolving and driving, the first lifting support body, the second lifting support body and lowering or hoisting gear, support body includes the first support body and the second support body being fixedly mounted, first lifting support body and the second lifting support body are vertically moveably mounted on the first support body and the second support body respectively, and the mobile terminal with lowering or hoisting gear is fixedly connected with respectively；Turning round support body includes the first reversing frame, the second reversing frame and the fixed part that can fix main steam isolation valve of nuclear power plant, the inner side of first reversing frame and the second reversing frame is connected by fixed part, outside is rotatably installed on the first lifting support body and the second lifting support body respectively, cavity, connecting portion and at least one spiral arm are provided with fixed part, and the tight lock part that spiral arm can be locked, the present invention is simple to operate, and switching process is stable, avoids the valve body caused by misoperation and damages.
Description
Technical field
The present invention relates to nuclear power station maintenance tool field, especially a kind of check man for main steam isolation valve of nuclear power plant
Dress.
Background technology
Main steam isolation valve is that nuclear power plant operates important valve body, as shown in figure 1, main steam isolation valve is one big
Type valve body, valve body upper end are hemispherical configuration, and the otic placode of lifting is provided with close to the bottom of hemispherical dome structure, and lower body is
The valve body switch executing agency of cylinder, because main steam isolation valve is the critical component of nuclear power plant, and body is larger is not easy to
Maintenance, thus its time between overhauls(TBO) be half a year to 1 year.In conventional maintenance process, generally by being driven a vehicle on the inside of nuclear power workshop by it
Sling and be delivered on the outside of nuclear power workshop, and carried it by fork truck or other haulage vehicles to the special overhaul shop of nuclear power, maintenance
Need to recycle the main suspension hook of driving of overhaul shop, secondary suspension hook to coordinate main steam isolation valve upset and fixation behind good lower end, because
To involve more suspension centre liftings, it is necessary to which association's cooperation of major and minor suspension hook, this method for turning have the drawback that：First, the mistake of upset
The operation of journey middle rolling car needs professional moving operation personnel, and needs more people's cooperations to be operated, and operation difficulty is big, behaviour
Make time length；Various uncontrollable factors are more when the 2nd, overturning, and valve body is easily out of control under the pulling of flexible hoist cable to be rocked, seriously
When even can damage valve body and possibly even cause casualties, and if valve body damage, the normal of nuclear power workshop will be had a strong impact on
Operation, and replacement cost is higher, so there is an urgent need to design a kind of maintenance tool for main steam isolation valve of nuclear power plant, comes
Main steam isolation valve is assisted to complete upset.
The content of the invention
In view of the above the shortcomings that prior art, it is an object of the invention to provide one kind be used for nuclear power plant's main steam every
From the maintenance tool of valve, for solving in main steam isolation valve of nuclear power plant maintenance process in the prior art, it is necessary to more suspension centres lift,
Operating difficulties, the problems such as flip-flop transition is long.
In order to achieve the above objects and other related objects, the present invention provides a kind of inspection for main steam isolation valve of nuclear power plant
Frock is repaiied, including：Support body, revolution support body, device for revolving and driving, the first lifting support body, the second lifting support body and described in driving
The lowering or hoisting gear that first lifting support body and the second lifting support body move up and down；The support body includes the first being fixedly mounted
Body and the second support body, the passage for allowing moving cart to pass through is provided between first support body and the second support body；Described first
Lifting support body and the second lifting support body is vertically movable linearly respectively is arranged on first support body and second
On support body, and the mobile terminal with the lowering or hoisting gear is fixedly connected with respectively；The revolution support body includes the first reversing frame, the second revolution
Frame and the fixed part that the main steam isolation valve of nuclear power plant can be fixed, between first reversing frame and second reversing frame
It is connected by the fixed part, the left side of first reversing frame is rotatably arranged on the described first lifting support body, institute
The right side for stating the second reversing frame is rotatably arranged on the described second lifting support body, and whole reversing frame physical efficiency is driven in the revolution
Dynamic device is rotated by；The cavity that can house the main steam isolation valve of nuclear power plant, energy are provided with the fixed part
The connecting portion that is connected with the main steam isolation valve of nuclear power plant otic placode and at least one the cavity can be opened and closed
Spiral arm, and the tight lock part that the spiral arm can be locked.
Preferably, two spiral arms are provided with the fixed part；One end of one spiral arm is rotatably arranged on institute
State on the first reversing frame, the other end is provided with the through hole to match with the locking flange hole on second fixed mount；Another
One end of the spiral arm rotatably be arranged on second reversing frame on, be provided with the other end with first fixed mount
The through hole that matches of locking flange hole, the cavity combines by the groove being arranged on two spiral arms, two institutes
After stating spiral arm locking, the groove can hold the lower body of the main steam isolation valve of nuclear power plant tightly.
Further, it is provided with lining made of soft material in two grooves.
Preferably, the maintenance tool for main steam isolation valve of nuclear power plant also includes moving cart, and the movement is small
The first rack and second that being respectively arranged with car can match with the main steam isolation valve of nuclear power plant upper and lower part is put
Put frame.
Further, second rack is the opening that can house the main steam isolation valve of nuclear power plant lower body
Cylinder, and the top of the cylinder is tubaeform.
Preferably, the lowering or hoisting gear includes two silks being separately positioned on first support body and second support body
Thick stick and two feed screw nuts being separately mounted on the leading screw, and the leading screw driving electricity of two drivings leading screw rotation
Machine.
Preferably, between the first lifting support body and first support body and described second lifts support body and described second
Line slideway auxiliary is mounted between support body, the guide rail of two line slideway auxiliaries is separately mounted to first support body and
On two support bodys, the sliding block of two line slideway auxiliaries is consolidated with the described first lifting support body and the second crane body phase respectively
Even.
Preferably, the maintenance tool for main steam isolation valve of nuclear power plant also include be arranged on first support body or
Auxiliary jacking apparatus on second support body.
Preferably, first reversing frame or second reversing frame are arranged on described the by pivoting support bearing respectively
On one lifting support body and the second lifting support body, first reversing frame and second reversing frame respectively with both sides pivoting support axle
The inner ring held is fixedly connected with, the outer ring of the pivoting support bearing of both sides respectively with the described first lifting support body and described second liter
Drop support body is fixedly connected with.
Further, the device for revolving and driving includes revolution driving motor and installed in the revolution driving electric machine main shaft
On drive gear, the drive gear is meshed with the internal gear set on the pivoting support bearing inner ring.
As described above, the present invention is used for the maintenance tool of main steam isolation valve of nuclear power plant, have the advantages that：Work as valve
The maintenance of body bottom is finished, it is necessary to when overturning, and main steam isolation valve of nuclear power plant is lifted into moving cart, and starting lowering or hoisting gear makes
First lifting support body and the second lifting support body drive fixed part to close lowering or hoisting gear after being moved to suitable height, by this check man
The spiral arm filled on fixed part is opened, and starts the inside cavity that main steam isolation valve of nuclear power plant is transported to fixed part by moving cart, rotation
Rotating arm closes cavity, locks spiral arm by tight lock part and connecting portion is connected with main steam isolation valve of nuclear power plant otic placode,
Start lowering or hoisting gear make the first lifting support body and second lift support body drive fixed part be move upwardly until nuclear power plant's main steam every
After departing from moving cart from valve lower end, device for revolving and driving is opened, after driving the revolution support body slowly to rotate 180 degree, is closed
Device for revolving and driving, starting lowering or hoisting gear makes the first lifting support body and the second lifting support body drive fixed part to move down until core
Power plant's main steam isolation valve upper end spheroid is placed in moving cart, is removed between connecting portion and main steam isolation valve of nuclear power plant otic placode
Connection, overturn end-of-job.The present invention it is simple to operate, switching process is more stable, avoid in the past lifting switching process because
Valve body caused by misoperation is damaged, while the upset of main steam isolation valve of nuclear power plant is carried out using the present invention, alleviates worker
The amount of labour, saved the time, substantially reduced the maintenance duration of main steam isolation valve of nuclear power plant.
Brief description of the drawings
Fig. 1 is the structure diagram of main steam isolation valve of nuclear power plant；
Fig. 2 is that the embodiment of the present invention removes the front view after leading screw motor and device for revolving and driving；
Fig. 3 is the B-B direction sectional view in Fig. 2；
Fig. 4 is that Fig. 3 removes the top view after moving cart；
Fig. 5 is the B-B direction sectional view after spiral arm is opened in Fig. 2.
In figure：1st, hemispherical configuration 2, otic placode
3rd, lower body 101, the first support body
102nd, the second support body 201, guide rail
202nd, sliding block 301, first lifts support body
302nd, the second lifting support body 401, pivoting support bearing
501st, the first reversing frame 502, the second reversing frame
601st, feed screw nut 602, leading screw
603rd, leading screw motor 604, revolution driving motor
605th, drive gear 606, shaft coupling
701st, the first rack 702, moving cart
703rd, the second rack 801, connecting portion
802nd, groove 803, spiral arm
804th, flange hole 901, jacking cylinder are locked
4011st, internal gear
Embodiment
Structure, ratio, size depicted in Figure of description etc., only to coordinate the content disclosed in specification, with
Understand for those skilled in the art and read, be not limited to the enforceable qualifications of the present invention, therefore do not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, can be generated not influenceing the present invention
Under effect and the purpose that can reach, all should still it fall in the range of disclosed technology contents can be covered.Meanwhile
Cited such as " on ", " under ", "front", "rear", " centre " term, are merely convenient to the clear of narration in this specification, and
It is not used to limit the enforceable scope of the present invention, its relativeness is altered or modified, in the case where changing technology contents without essence, when
Also it is considered as the enforceable category of the present invention.
As Figure 1-5, the present invention is a kind of maintenance tool for main steam isolation valve of nuclear power plant, including：Support body, return
Pivoted frame body, device for revolving and driving, the first lifting support body 301, second lift support body 302 and can drive the and of the first lifting support body 301
The lowering or hoisting gear that second lifting support body 302 moves up and down, support body include the first support body 101 and the second support body 102 being fixedly mounted,
The passage for allowing moving cart 702 to pass through is provided between first support body 101 and the second support body 102；The first lifting He of support body 301
Second lifting support body 302 is vertically moveably mounted on the first support body 101 and the second support body 102 respectively, and respectively
It is fixedly connected with the mobile terminal of lowering or hoisting gear；Turning round support body includes the first reversing frame 501, the second reversing frame 502 and can be by nuclear power plant
The fixed part that main steam isolation valve is fixed, is connected between the first reversing frame 501 and the second reversing frame 502 by fixed part, the
The left side of single-revolution frame 501 is rotatably arranged on the first lifting support body 301, and the right side of the second reversing frame 502 is rotatable
On the second lifting support body 302, whole reversing frame physical efficiency is rotated by device for revolving and driving；Set on fixed part
Cavity, the connecting portion that can be connected with main steam isolation valve of nuclear power plant otic placode 2 of main steam isolation valve of nuclear power plant can be housed by having
801 and at least one spiral arm that cavity can be opened and closed, and the tight lock part that spiral arm can be locked.
When valve needs upset, main steam isolation valve of nuclear power plant is lifted into moving cart 702, starting lowering or hoisting gear makes
First lifting support body 301 and second lifts support body 302 and drives fixed part to close lowering or hoisting gear after being moved to suitable height, incite somebody to action this
Spiral arm 803 on maintenance tool fixed part is opened, and starts moving cart 702 and main steam isolation valve of nuclear power plant is transported into fixed part
Inside cavity, rotation spiral arm 803 close cavity, lock spiral arm 803 by tight lock part and steam connecting portion 801 and nuclear power factory owner
Vapour isolating valve otic placode 2 is connected, and starting lowering or hoisting gear makes the first lifting support body 301 and the second lifting support body 302 drive fixed part
After being move upwardly until that main steam isolation valve of nuclear power plant lower end departs from moving cart 702, device for revolving and driving, driving revolution are opened
After support body slowly rotates 180 degree, device for revolving and driving is closed, starting lowering or hoisting gear makes the first lifting support body 301 and the second lifting
Support body 302 drive fixed part move down until main steam isolation valve of nuclear power plant upper end spheroid be placed in moving cart 702, tear open
Except the connection between connecting portion 801 and main steam isolation valve of nuclear power plant otic placode 2, end-of-job is overturn.The present invention is simple to operate, upset
Process is more stable, avoids the valve body caused by misoperation of lifting switching process in the past and damages, while is entered using the present invention
The upset of row main steam isolation valve of nuclear power plant, the amount of labour of worker is alleviated, has saved the time, substantially reduce nuclear power factory owner steaming
The maintenance duration of vapour isolating valve.
Two spiral arms 803 are provided with fixed part in the present embodiment；One end of one spiral arm 803 is rotatably arranged on
On first reversing frame 501, the other end is provided with the through hole to match with the locking flange hole 804 on the second fixed mount；Another
One end of spiral arm 803 is rotatably arranged on the second reversing frame 502, is provided with the other end and the locking on the first fixed mount
The through hole that flange hole 804 matches.This mode, can be in the first support body 101 and the second frame when two spiral arms are opened 90 ° simultaneously
An open passage is formed between body 102, moving cart of being more convenient for passes through.Cavity in the present embodiment is by being arranged on two
Groove 802 on spiral arm 803 combines, and after two spiral arms 803 are locked, groove 802 can be by main steam isolation valve of nuclear power plant
Lower body 3 is held tightly.Tight lock part in the present embodiment is the latch that can be inserted in locking flange hole 804 and the through hole of spiral arm 803.Turn over
Lower body 3 can be embraced during turning, reduce the stress of the junction bolt of otic placode 2.In order to preferably protect lower valve
Lining made of soft material is provided with two grooves 802 of the present embodiment of body 3.
Maintenance tool in the present embodiment for main steam isolation valve of nuclear power plant also includes moving cart 702, moving cart
The first rack 701 and second that being respectively arranged with 702 can match with main steam isolation valve of nuclear power plant upper and lower part is put
Put frame 703.Other can be moved to the main steam isolation valve of nuclear power plant that driving or fork truck are lifted in place or after maintenance to treat
Operating area, the second rack 703 are that can house the open cylinder of main steam isolation valve of nuclear power plant lower body 3, and cylinder
Top to be tubaeform, tubaeform opening is engaged and can positioned with automatic centering with cylindrical lower body 3.
Lowering or hoisting gear in the present embodiment includes two silks being separately positioned on the first support body 101 and the second support body 102
Thick stick 602 and two nuts 601 of leading screw 602 being separately mounted on leading screw 602, and the leading screw that two driving leading screws 602 rotate
Motor 603.Leading screw motor 603 is connected by shaft joint 605 with screw mechanism.
Between the first lifting support body 101 of support body 301 and first in the present embodiment and second lifts the frame of support body 302 and second
The pair of line slideway 201 is mounted between body 102, two secondary guide rails 201 of line slideway 201 are separately mounted to the first support body
101 and second on support body 102, and two corresponding sliding blocks 202 lift the phase of support body 302 with the first lifting support body 301 and second respectively
It is connected.
To prevent in upset or lifting process, main steam isolation valve caused by drive device damage falls, this reality
Apply and auxiliary jacking apparatus is additionally provided with example, the auxiliary jacking apparatus in the present embodiment is to be arranged on the first support body 101 and second
Jacking cylinder on support body 102, accident on the one hand can be protected, on the other hand can play and reduce lowering or hoisting gear load effect,
Beneficial to the life-span for extending lowering or hoisting gear.
The first reversing frame 501 and the second reversing frame 502 in the present embodiment are arranged on by pivoting support bearing 401 respectively
First lifting support body 301 and second is lifted on support body 302, and the first reversing frame 501 and the second reversing frame 502 turn round with both sides respectively
The inner ring of bearing support 401 is fixedly connected with, and the outer ring of two pivoting support bearings 401 lifts support body 301 and second liter with first respectively
Drop support body 302 is fixedly connected with.
Device for revolving and driving includes revolution driving motor 604 and the sliding tooth on the main shaft of revolution driving motor 604
Wheel 605, drive gear 605 is meshed with the internal gear 4011 set on the inner ring of pivoting support bearing 401.
The first reversing frame or the second reversing frame are mutually solid with the turning end of both sides pivoting support bearing 401 respectively in the present embodiment
Even, the fixing end of the pivoting support bearing 401 of both sides lifts support body 302 with the corresponding first lifting support body 301 and second respectively
It is fixedly connected with.
In summary, the present invention is simple to operate, and switching process is more stable, avoids lifting switching process in the past because of operation
Valve body caused by improper is damaged, while the upset of main steam isolation valve of nuclear power plant is carried out using the present invention, alleviates the labor of worker
Momentum, the time is saved, substantially reduced the maintenance duration of main steam isolation valve of nuclear power plant, can effectively solved in the prior art
, it is necessary to which more suspension centres lift in main steam isolation valve of nuclear power plant maintenance process, operating difficulties, the problems such as flip-flop transition is long.So this
Invention effectively overcomes some practical problems of the prior art so as to have very high value and using meaning.
The principle and its effect of the above-mentioned embodiment only illustrative present invention, not for the limitation present invention.This hair
It is bright to also have many aspects to be improved on the premise of without prejudice to overall thought, all can be for those skilled in the art
Without prejudice under the spirit and scope of the present invention, modifications and changes can be carried out to above-described embodiment.Therefore, art such as
Middle tool usually intellectual without departing from disclosed spirit and all equivalent modifications for being completed under technological thought or
Change, should be covered by the claim of the present invention.
Claims (10)
- A kind of 1. maintenance tool for main steam isolation valve of nuclear power plant, it is characterised in that including：Support body, revolution support body, revolution Drive device, the first lifting support body, second lift support body and can drive the first lifting support body and the second lifting support body The lowering or hoisting gear moved up and down；The support body includes the first support body and the second support body being fixedly mounted, first support body and the The passage for allowing moving cart to pass through is provided between two support bodys；The first lifting support body and the second lifting support body difference Vertically movable linearly is arranged on first support body and the second support body, and the shifting with the lowering or hoisting gear respectively Moved end is fixedly connected with；The revolution support body includes the first reversing frame, the second reversing frame and can be by the main steam isolation valve of nuclear power plant Fixed fixed part, it is connected between first reversing frame and second reversing frame by the fixed part, described first The left side of reversing frame is rotatably arranged on the described first lifting support body, and the right side of second reversing frame is rotatably installed On the described second lifting support body, whole reversing frame physical efficiency is rotated by the device for revolving and driving；The fixed part On be provided with can house the main steam isolation valve of nuclear power plant cavity, can be with the main steam isolation valve of nuclear power plant otic placode phase The connecting portion of connection and at least one spiral arm that the cavity can be opened and closed, and the spiral arm can be locked Tight lock part.
- 2. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that the fixation Two spiral arms are provided with portion；One end of one spiral arm is rotatably arranged on first reversing frame, and the other end is set It is equipped with the through hole to match with the locking flange hole on second fixed mount；Rotatably pacify one end of another spiral arm On second reversing frame, it is provided with the other end and leads to what the locking flange hole on first fixed mount matched Hole, the cavity are combined by the groove being arranged on two spiral arms, after two spiral arm lockings, the groove energy The lower body of the main steam isolation valve of nuclear power plant is held tightly.
- 3. the maintenance tool according to claim 2 for main steam isolation valve of nuclear power plant, it is characterised in that described in two Lining made of soft material is provided with groove.
- 4. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that described to be used for The maintenance tool of main steam isolation valve of nuclear power plant also includes moving cart, and being respectively arranged with the moving cart can be with the core The first rack and the second rack that power plant's main steam isolation valve upper and lower part matches.
- 5. the maintenance tool according to claim 4 for main steam isolation valve of nuclear power plant, it is characterised in that described second Rack is the open cylinder that can house the main steam isolation valve of nuclear power plant lower body, and the top of the cylinder is loudspeaker Shape.
- 6. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that the lifting Device is separately mounted to including two leading screws and at least two being separately positioned on first support body and second support body Feed screw nut on the leading screw, and the leading screw motor of two drivings two leading screw rotation.
- 7. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that described first Straight line is mounted between lifting support body and first support body between the second lifting support body and second support body to lead Rail pair, the guide rail of two line slideway auxiliaries are separately mounted on first support body and the second support body, two straight lines The sliding block of guideway is connected with the described first lifting support body and the second crane body phase respectively.
- 8. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that described to be used for The maintenance tool of main steam isolation valve of nuclear power plant also includes the auxiliary top being arranged on first support body or second support body Rise device.
- 9. the maintenance tool according to claim 1 for main steam isolation valve of nuclear power plant, it is characterised in that described first Reversing frame or second reversing frame are arranged on the described first lifting support body and the second crane by pivoting support bearing respectively On body, the inner ring of first reversing frame and second reversing frame respectively with both sides pivoting support bearing is fixedly connected with, both sides The outer ring of the pivoting support bearing is connected with the described first lifting support body and the second crane body phase respectively.
- 10. the maintenance tool according to claim 9 for main steam isolation valve of nuclear power plant, it is characterised in that described time Rotary driving device includes revolution driving motor and the drive gear on the revolution driving electric machine main shaft, the sliding tooth Wheel is meshed with the internal gear set on the pivoting support bearing inner ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009866.9A CN107673271A (en) | 2017-10-25 | 2017-10-25 | Maintenance tool for main steam isolation valve of nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711009866.9A CN107673271A (en) | 2017-10-25 | 2017-10-25 | Maintenance tool for main steam isolation valve of nuclear power plant |
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| CN107673271A true CN107673271A (en) | 2018-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711009866.9A Pending CN107673271A (en) | 2017-10-25 | 2017-10-25 | Maintenance tool for main steam isolation valve of nuclear power plant |
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| CN207468111U (en) * | 2017-10-25 | 2018-06-08 | 通裕重工股份有限公司 | For the maintenance tool of main steam isolation valve of nuclear power plant |
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