CN110265907A - A kind of sub- apparatus for examination and repair of soft straight valve tower layer insulation and method - Google Patents
A kind of sub- apparatus for examination and repair of soft straight valve tower layer insulation and method Download PDFInfo
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- CN110265907A CN110265907A CN201910584491.1A CN201910584491A CN110265907A CN 110265907 A CN110265907 A CN 110265907A CN 201910584491 A CN201910584491 A CN 201910584491A CN 110265907 A CN110265907 A CN 110265907A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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Abstract
The invention discloses a kind of sub- apparatus for examination and repair of soft straight valve tower layer insulation and methods, including replacing insulator unit, include at least two groups telescopic component, plane where telescopic component described in every group is parallel with plane where every layer of valve segment frames, the telescopic component is fixed on the upper layer and lower layer valve segment frames of the sub- side of Awaiting Overhaul layer insulation, and the distance between the upper layer and lower layer valve segment frames that can adjust the sub- side of Awaiting Overhaul layer insulation；Valve section fixed cell includes at least two groups fixation kit, and plane where fixation kit described in every group is parallel with plane where every layer of valve segment frames, and the fixation kit is fixed on the upper layer and lower layer valve segment frames of the sub- opposite side of Awaiting Overhaul layer insulation.The present invention fixes the upper layer and lower layer valve segment frames of the sub- opposite side of Awaiting Overhaul layer insulation using valve section fixed cell, other layer insulation bear relatively larger transverse load when can be avoided replacement insulator, it avoids it from being deformed or be broken, can be realized the safe and effective maintenance of layer insulation.
Description
Technical field
The present invention relates to flexible DC transmission technology fields, more particularly to a kind of soft straight sub- apparatus for examination and repair of valve tower layer insulation
And method.
Background technique
Flexible DC transmission be a new generation HVDC Transmission Technology, because its have can to passive network power, can be independent
Active the advantages that being not necessarily to communication between reactive power, converter station and being readily configured MTDC transmission system is adjusted, in recent years in state
Inside and outside application is more and more extensive.Wherein high stability, the converter valve of high reliability are the core equipments of the technology.
Currently, high-voltage large-capacity flexible direct current converter valve mostly uses greatly tower structure, valve layer, valve layer are constituted by multiple groups valve section
Between fixed by the support of layer insulation, layer insulation plays the role of support and insulation in soft straight valve tower, general fixed
In the surrounding of upper layer and lower layer valve section, it is connect with the metal framework at valve section both ends.Layer insulation is a kind of novel compound inslation
Son is mainly made of full skirt protective case, fiber reinforced plastics rod and end metal fitting three parts, and with light weight, anti-pollution is good, stretches
The good advantage of performance.But due to the composite insulator work under high mechanical load, high voltage and high field intensity for a long time in soft straight valve tower
Make, inevitably it is possible that the problems such as aging degree of umbrella skirt, mandrel fracture, in addition soft straight valve time of putting into operation is shorter at present, layer
Between there are also to be determined the insulator service life, it is therefore desirable to consider the sub- maintenance issue of layer insulation.
Since layer insulation is the main support of valve tower interlayer, larger vertical load is born, when maintenance will not only solve
The problem of layer insulation certainly how is replaced, it is also contemplated that the stability of valve tower, avoids causing to damage to valve tower other structures, together
When consider between insulator bending resistance and torsional property it is poor, need to avoid in maintenance other layer insulation bear it is relatively larger transverse or
Lateral load needs to cause maintenance difficulty larger in high altitude operation when along with maintenance in order to avoid it is caused to be broken or damage, right
Security requirement is higher.In the prior art, there is no the safely and effectively apparatus for examination and repair for being suitable for soft straight valve tower layer insulation
And method.
Summary of the invention
The technical problem to be solved by the present invention is cannot be good in order to solve insulator apparatus for examination and repair in the prior art
The stability that the replacement layer insulation period of the day from 11 p.m. to 1 a.m guarantees valve tower is solved, avoids that valve tower other structures are caused to damage, while avoiding other
Layer insulation bears the technical issues of relatively larger transverse or lateral load, and the present invention provides a kind of soft straight valve tower layer insulation
Apparatus for examination and repair and method solve the above problems.
The technical solution adopted by the present invention to solve the technical problems is: a kind of soft straight valve tower layer insulation maintenance dress
It sets, including replacing insulator unit, includes at least two groups telescopic component, plane and every layer of valve section where telescopic component described in every group
Plane where frame is parallel, and the telescopic component is fixed on the upper layer and lower layer valve segment frames of the sub- side of Awaiting Overhaul layer insulation,
And the distance between the upper layer and lower layer valve segment frames that the sub- side of Awaiting Overhaul layer insulation can be adjusted；Valve section fixed cell includes
At least two groups fixation kit, plane where fixation kit described in every group is parallel with plane where every layer of valve segment frames, the fixation
Component is fixed on the upper layer and lower layer valve segment frames of the sub- opposite side of Awaiting Overhaul layer insulation, is suitable for fixed Awaiting Overhaul layer insulation
The distance between upper layer and lower layer valve segment frames of opposite side.
Since valve segment frames are rigid structure, it is difficult bending deformation, it is therefore desirable to which at least two groups telescopic component is set by position
Upper layer and lower layer valve segment frames in the sub- side of Awaiting Overhaul layer insulation pull open certain distance in parallel, while at least two groups are arranged and fix
Component guarantees that the both ends distance of the upper layer and lower layer valve segment frames of the sub- opposite side of Awaiting Overhaul layer insulation is fixed, avoids valve segment frames
Transverse direction or lateral load are generated to layer insulation after local pressure, it is caused to be broken or damage.
Further, the telescopic component includes upper cushion block, lower cushion block and jack, and the jack is fixed on described
Between cushion block and lower cushion block, jack connection is suitable for jacking up the pressurizing device of the jack, the upper end of the upper cushion block with it is upper
Layer valve segment frames are fixed；The lower end of the lower cushion block is fixed with lower layer's valve segment frames.
Further, the jack is double-action jack, and the pressurizing device includes hydraulic pump and distributor, described
Hydraulic pump, distributor and jack are successively sequentially connected by high-pressure hose.
Further, the fixation kit is threadedly connected to comprising adjusting screw rod and respectively the upper of the adjusting screw rod both ends
Pull rod and lower pull rod, upper end and the upper layer valve segment frames of the upper connecting rod are fixed；The lower end of the lower pull rod and lower layer's valve section frame
Frame is fixed, and facilitates installation to fix using screw connecting structure.
Further, the adjusting screw rod includes the thread segment of intermediate fastening section and the connection intermediate fastening section both ends,
Two thread segments are threadedly coupled with the upper connecting rod and lower pull rod respectively, and intermediate fastening section is used for fastening screw both ends, institute
It states intermediate fastening section and is equipped with fabrication hole for the side of outer-hexagonal structure and/or the intermediate fastening section.Outer-hexagonal structure can make
It is fastened with spanner.Pole fastening can be used in the fabrication hole of side.
Further, the connecting end surface of the lower cushion block and upper cushion block and the jack is equipped with circular groove, described
Pin hole is equipped in circular groove, pin is inserted into the pin hole and connects the lower cushion block and upper cushion block and the jack end
It connects.
Further, the jack includes cylinder body and does axial stretching fortune positioned at the cylinder interior and along the cylinder body
Dynamic top, the top outer end are threaded with the locking nut that can be against the cylinder ends, reach mechanical self-latching
Effect, to guarantee the safety in maintenance process.
Further, the soft straight sub- apparatus for examination and repair of valve tower layer insulation further includes two lifting ropes, two lifting ropes one
End is separately connected two, upper layer valve segment frames, and the lifting rope other end connects travelling crane hook, to guarantee valve tower structure in maintenance process
Stablize, prevents accident.
The present invention also provides a kind of soft straight sub- repair methods of valve tower layer insulation comprising the steps of:
Step 1: remove interference part: the water in valve tower in cooling water pipe is drained, remove insulated pull rod, shielding case,
Pressure ring and switching cable duct.
Step 2: valve section fixed cell fixed apparatus for examination and repair: is installed to the upper of the sub- opposite side of layer insulation to be replaced
On lower two layers of valve segment frames；Replacing insulator unit is fixed to the upper layer and lower layer valve segment frames of the sub- side of Awaiting Overhaul layer insulation
On.
Step 3: replacement Awaiting Overhaul layer insulation: by Awaiting Overhaul layer insulation and its layer insulation of phase the same side
The fastening screw of sub- upper and lower ends unclamps, and upper layer valve segment frames are slowly jacked up 5-10mm by replacing insulator unit, extracts out
Layer insulation of Awaiting Overhaul, new layer insulation of replacement one, and by new layer insulation and upper and lower level valve segment frames
It is fixed；
Step 4: removing apparatus for examination and repair, and insulated pull rod, shielding case, grading ring and switching cable duct are resetted.
Further, in step 3, by Awaiting Overhaul layer insulation and its sub- upper and lower ends of layer insulation of phase the same side
Fastening screw unclamp after, then a jack is installed in each telescopic component, and by pin limit, it is later on hydraulic
Pump, by upper layer valve Duan Dingqi.
The beneficial effects of the present invention are:
(1) the sub- apparatus for examination and repair of soft straight valve tower layer insulation of the present invention and method, can be realized layer insulation peace
Entirely, it effectively overhauls, and structure is simple, cost is relatively low.
(2) present invention is during replacing insulator, using the fixed sub- opposite of Awaiting Overhaul layer insulation of valve section fixed cell
The upper layer and lower layer valve segment frames of side can be avoided other layer insulation and bear relatively larger transverse load, avoid its be deformed or
Fracture.
(3) present invention, using driving and the fixed upper layer valve section of lifting rope, can guarantee to overhaul during replacing insulator
The stabilization of valve tower structure in journey, safety with higher.
(4) present invention in use two synchronous double-action jacks, can be realized jacking and decline during two it is hydraulic
The movement of cylinder synchronous uniform velocity can avoid causing greater impact to valve tower.
(5) jack used in the present invention has mechanical self-latching structure, and self-locking nut, safety are tightened after the completion of pressurization
It is higher, it avoids that accident occurs in replacement process.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the soft straight valve tower structural representation for being equipped with the soft straight sub- apparatus for examination and repair of valve tower layer insulation of the present invention
Figure；
Fig. 2 is that soft straight valve tower layer insulation when Awaiting Overhaul layer insulation is located at longitudinal side in the present invention is examined
Repair device scheme of installation (only illustrating most upper two layers of valve tower structure)；
Fig. 3 is that soft straight valve tower layer insulation when Awaiting Overhaul layer insulation is located at longitudinal middle part in the present invention is examined
Repair device scheme of installation (only illustrating most upper two layers of valve tower structure)；
Fig. 4 is enlarged drawing at A in Fig. 2；
Fig. 5 is enlarged drawing at B in Fig. 2；
Fig. 6 is the perspective view of heretofore described fixation kit；
Fig. 7 is the perspective view of telescopic component when not installing jack in the present invention；
Fig. 8 is the perspective view of telescopic component when installing jack in the present invention；
Fig. 9 is the connection schematic diagram of heretofore described jack Yu the pressurizing device.
In figure, 1, telescopic component, 101, upper cushion block, 102, lower cushion block, 103, jack, 1031, locking nut, 1032,
Cylinder body, 1033, top, 104, pressurizing device, 1041, hydraulic pump, 1042, distributor, 1043, high-pressure hose, 105, round recessed
Slot, 106, pin, 2, fixation kit, 201, upper connecting rod, 202, lower pull rod, 203, adjusting screw rod, 2031, thread segment, 2032, in
Between fastening section, 2033, fabrication hole, 3, valve segment frames, 4, isolation beam, 5, mould group, 6, Awaiting Overhaul layer insulation, 7, layer insulation
Son, 8, lifting rope.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not considered as limiting the invention.
As shown in Figure 1-Figure 3, a kind of soft straight sub- apparatus for examination and repair of valve tower layer insulation, including replacing insulator unit include
At least two groups telescopic component 1, every group of 1 place plane of telescopic component is parallel with every layer of 3 place plane of valve segment frames, i.e., in place side
Arrange that telescopic component 1, telescopic component 1 are fixed on the upper and lower of sub 6 sides of Awaiting Overhaul layer insulation on the length direction of valve segment frames 3
On two layers of valve segment frames 3, and the distance between the upper layer and lower layer valve segment frames 3 of sub 6 sides of Awaiting Overhaul layer insulation can be adjusted,
Elongation telescopic component 1 makes to strut certain distance between upper layer and lower layer valve segment frames 3, layer insulation 7 to be detected easy to disassemble, when
It again shrinks telescopic component 1 after 7 replacement of layer insulation, restores the distance between upper layer and lower layer valve segment frames 3；Valve Duan Gu
Order member, includes at least two groups fixation kit 2, and every group of 2 place plane of fixation kit is flat with every layer of 3 place plane of valve segment frames
Row arranges that fixation kit 2, fixation kit 2 are fixed on Awaiting Overhaul layer insulation that is, on the length direction of place side valve segment frames 3
Upper layer and lower layer valve section on the upper layer and lower layer valve segment frames 3 of sub 6 opposite sides, suitable for sub 6 opposite sides of fixed Awaiting Overhaul layer insulation
The distance between frame 3.
Since every layer of valve segment frames 3 are arranged in the two sides of isolation beam 4, ability is poor by bending for isolation beam 4, therefore valve section
Frame 3 needs to keep horizontal during moving up and down, and avoids one end inclination that isolation beam 4 is caused to reverse, when every group of telescopic component 1 is same
Shi Lashen or when shortening, valve segment frames 3 can remain horizontal during moving up and down, so that valve segment frames 3 be avoided to incline
Tiltedly；Simultaneously because the quality of valve tower is larger, the design of multiple groups fixation kit 2 can it is excessive to avoid 3 local pressure of valve segment frames and
Transverse direction or lateral load are generated to layer insulation 7 of part.
The present invention also provides a kind of soft straight sub- repair methods of valve tower layer insulation comprising the steps of:
Step 1: it removes interference part: opening valve tower water main drain valve, top vent valve, inlet valve is closed, by valve tower
Water in upper cooling water pipe drains；It removes insulated pull rod, shielding case, grading ring and switching cable duct etc. and inhibits upper and lower level valve section frame
The distracted interference part of frame 3.
Step 2: valve section fixed cell fixed apparatus for examination and repair: is installed to the upper of sub 7 opposite sides of layer insulation to be replaced
On lower two layers of valve segment frames 3 (as shown in Figure 5)；Replacing insulator unit is fixed to the upper of sub 6 sides of Awaiting Overhaul layer insulation
On lower two layers of valve segment frames 3 (as shown in Figure 4).
Step 3: replacement Awaiting Overhaul layer insulation 6: the interlayer of Awaiting Overhaul layer insulation 6 and its phase the same side is exhausted
The fastening screw of 7 upper and lower ends of edge unclamps, since ipsilateral layer insulation 7 is each attached on the same valve segment frames 3, because
This will simultaneously unclamp the fastening screws of ipsilateral all layer insulation 7, by replacing insulator unit by upper layer valve section frame
Frame 3 slowly jacks up 5-10mm, extracts layer insulation 7 of Awaiting Overhaul out, replaces new layer insulation 7, and by new layer
Between insulator 7 and upper and lower level valve segment frames 3 it is fixed；
Step 4: removing apparatus for examination and repair, and insulated pull rod, shielding case, grading ring and switching cable duct are resetted.
Embodiment 1, as shown in Figure 1, a kind of soft straight sub- apparatus for examination and repair of valve tower layer insulation, is three layers for the valve tower number of plies,
The valve tower structure of every layer of three mould group 5 with in-line arrangement, each mould group 5 are placed on an isolation beam 4, isolation beam 4
A valve segment frames 3 are respectively bolted in longitudinal two sides, and bolt is transversely installed, when valve segment frames 3 move up and down, isolation beam
4 and valve segment frames 3 can generate certain relative rotation, avoid isolation beam 4 from reversing, pass through between upper layer and lower layer valve segment frames 3
Layer insulation son 7 connect, as shown in Figure 2 and Figure 3, in the present embodiment replacing insulator unit include two groups of telescopic components 1, two groups
1 place plane of telescopic component is parallel with every layer of 3 place plane of valve segment frames, i.e., on the length direction of place side valve segment frames 3
Arrange that telescopic component 1, length direction described herein refer to that the length direction of valve segment frames 3, telescopic component 1 are fixed on Awaiting Overhaul
On the upper layer and lower layer valve segment frames 3 of 6 sides of layer insulation, and up and down the two of sub 6 sides of Awaiting Overhaul layer insulation can be adjusted
The distance between layer valve segment frames 3 guarantee the replacement of Awaiting Overhaul layer insulation 6 to strut upper layer and lower layer valve segment frames 3；Valve
Section fixed cell includes at least two groups fixation kit 2, every group of 2 place plane of fixation kit and every layer of 3 place plane of valve segment frames
In parallel, i.e., fixation kit 2 is arranged on the length direction of place side valve segment frames 3, it is exhausted that fixation kit 2 is fixed on Awaiting Overhaul interlayer
Upper layer and lower layer valve on the upper layer and lower layer valve segment frames 3 of 6 opposite side of edge, suitable for sub 6 opposite sides of fixed Awaiting Overhaul layer insulation
The distance between segment frames 3, to reduce the transverse load that other layer insulations 7 is born.
As shown in Fig. 2, when Awaiting Overhaul layer insulation 6 is located at the longitudinal side of valve tower, only layer insulation 7 of side
It is opposite with Awaiting Overhaul layer insulation son 6, therefore telescopic component 1 is arranged two groups, is connected to and connects with Awaiting Overhaul layer insulation 6
At the both ends of the upper and lower level valve segment frames 3 connect；Fixation kit 2 is also provided with two groups, is connected to and Awaiting Overhaul layer insulation 6
At the both ends of the upper and lower level valve segment frames 3 of opposite 7 connection of layer insulation；As shown in figure 3, working as Awaiting Overhaul layer insulation 6
When positioned at the longitudinal middle part of valve tower, then sub 6 two sides of Awaiting Overhaul layer insulation all have layer insulation 7, and telescopic component 1 is still at this time
It is arranged two groups, and fixation kit 2 needs to be arranged four groups, four groups of fixation kits 2 are evenly arranged in sub 6 two sides of Awaiting Overhaul layer insulation
Upper and lower level valve segment frames 3 on.
When valve segment frames 3 are longer, and are provided with more than two layer insulation 7 between upper and lower level valve segment frames 3,
Telescopic component 1 more than two can be set, guarantee the whole uniform force of valve segment frames 3.
Specifically, as shown in figure 8, telescopic component 1 includes upper cushion block 101, lower cushion block 102 and jack 103, jack
103 are fixed between cushion block 101 and lower cushion block 102, and the connection of jack 103 is suitable for jacking up the pressurizing device of jack 103
104, the upper end of upper cushion block 101 and upper layer valve segment frames 3 are fixed；The lower end of lower cushion block 102 and lower layer's valve segment frames 3 are fixed.On
Cushion block 101 and lower cushion block 102 are formed by aluminium alloy integral solder, are had the advantages that intensity height, light weight, are facilitated and carry out on tower
Installation.The upper end of upper cushion block 101 and the lower end of lower cushion block 102 offer mounting hole, by screw and upper layer valve segment frames 3 and
Lower layer's valve segment frames 3 connect.
Jack 103 can use mechanical pressurization, can also use hydraulic or Pneumatic Pressure, be commonly used and be
The jack 103 of hydraulic pressurization, as shown in figure 9, wherein pressurizing device 104 includes hydraulic pump 1041 and distributor 1042, it is described
Hydraulic pump 1041, distributor 1042 and jack 103 are successively sequentially connected by high-pressure hose 1043, distributor 1042 be used for
The rationed hydraulic oil of jack 103；When telescopic component 1 be two groups when, in order to guarantee telescopic component 1 simultaneously rising or under
Drop, i.e., two 103 strokes of jack are identical, and speed is uniform, avoid generating valve tower structure greater impact, compression system uses
One drag two structure, i.e. hydraulic pump 1041 use electric double-action hydraulic pump 1041, by two high-pressure hoses 1043 respectively with two
A distributor 1042 connects, and two distributors 1042 are connect by four high-pressure hoses 1043 with two jack 103 respectively again.
Jack 103 generally uses double-action jack 103, can satisfy jack-up and shrinks two kinds of motion states.
As shown in fig. 6, fixation kit 2 is comprising adjusting screw rod 203 and is threadedly connected to 203 both ends of adjusting screw rod respectively
Upper connecting rod 201 and lower pull rod 202, the upper end of upper connecting rod 201 and upper layer valve segment frames 3 are fixed；The lower end of lower pull rod 202 is under
Layer valve segment frames 3 are fixed, and the lower end of the upper end of upper connecting rod 201 and lower pull rod 202 offers mounting hole, pass through screw and upper layer
Valve segment frames 3 and lower layer's valve segment frames 3 connect, and the upper end of the lower end of upper connecting rod 201 and lower pull rod 202 offers internal screw thread,
It is connect with adjusting screw rod 203, compared with the fixed fixation kit 2 of length, can be convenient installation using adjusting screw rod 203 and fix.
Embodiment 2, when fixation kit 2 is installed, rotation adjusting screw rod 203 shortens fixation kit 2 until fixed first
Component 2 can be placed between upper and lower level valve segment frames 3, after the upper and lower side and upper and lower level valve segment frames 3 of component 2 to be fixed are fixed
Rotation adjusting screw rod 203 makes to tighten between upper and lower level valve segment frames 3, the pico- stress of upper and lower level valve segment frames 3, it is therefore desirable to use
Biggish active force rotates adjusting screw rod 203, tool operation is used for convenience, as shown in fig. 6, the adjusting spiral shell in the present embodiment
Bar 203 includes intermediate fastening section 2032 and the thread segment 2031 for connecting 2032 both ends of intermediate fastening section, and two thread segments 2031 divide
It is not threadedly coupled with upper connecting rod 201 and lower pull rod 202, acting surface of the intermediate fastening section 2032 as tool operation, centre fastening
Section 2032 can use outer-hexagonal structure, can be fastened at this time using die nut, can also be in the side of intermediate fastening section 2032
Fabrication hole 2033 is arranged in side, and the pole fastening for being inserted into fabrication hole 2033 can be used at this time, can also be hexagonal outside
Fabrication hole 2033 is arranged in intermediate 2032 side of fastening section, selects suitable tool according to special case.
In embodiment 3, embodiment 1 or embodiment 2, jack 103 can directly be against cushion block 101 and lower cushion block
Between 102, if but jack 103 place inclination or when by external force, jack 103 is easy to send out during jacking up
Raw rollover causes 3 immediate inclination of valve segment frames, layer insulation 7 impaired, therefore the present embodiment is in lower cushion block 102 and upper cushion block
101 are equipped with circular groove 105 with the connecting end surface of the jack 103, pin hole are equipped in circular groove 105, such as Fig. 7 institute
Show, the both ends of jack 103 are trapped in circular groove 105 when installation, and the end of jack 103 is usually internally recessed, pin
106 insertion 106 holes of pin are simultaneously against on the end face of jack 103, for limit jack 103 relative to upper cushion block 101 or
The lateral displacement of lower cushion block 102.
Embodiment 4 needs that telescopic component 1 is made to keep one when upper and lower level valve segment frames 3 are when strutting spacing and reaching designated value
The stationary state fixed time is conveniently replaceable Awaiting Overhaul insulator, and generalling use check valve keeps jack 103 self-locking, but unidirectional
Valve cannot load for a long time, and since valve tower height is usually at more than ten meters or so, often replacing construction is longer, and the present embodiment exists thus
On the basis of embodiment 1 or embodiment 2 or embodiment 3, mechanical self-latching structure, specific structure are set on jack 103
It is as follows: as shown in figure 8, jack 103 includes cylinder body 1032 and does inside the cylinder body 1032 and along the cylinder body 1032
The top 1033 of axial stretching movement comes directly towards 1033 when jack 103 is under pressure and moves to the direction for stretching out cylinder body 1032,
The height of jack 103 gradually increases, and gradually struts upper and lower level valve segment frames 3, comes directly towards 1033 end setting external screw thread, is used for
Locking nut 1031 is connected, when telescopic component 1, which reaches, struts height, rotation locking nut 1031 is until locking nut 1031 supports
On 1032 end face of cylinder body, coming directly towards 1033 at this time will not be reduced in cylinder body 1032 under the limitation of locking nut 1031, thus real
Existing mechanical self-latching, mechanical self-latching structure has keeps loading functional for a long time, can guarantee the safety in maintenance process.
Embodiment 5, since valve tower is up to more than ten meters, and valve tower total quality is heavier, so if in maintenance process due to
Local pressure unevenness topples over valve tower inclination even, it will very serious accident is caused, for safety, such as Fig. 2 and Fig. 3 institute
Show, the present embodiment adds two lifting ropes 8 on the basis of above embodiments, and two described 8 one end of lifting rope are separately connected upper layer two
A valve segment frames 3,8 other end of lifting rope connection travelling crane hook prevent to anticipate to guarantee the stabilization of valve tower structure in maintenance process
Outside.It is further to note that the quantity of lifting rope 8 and the upper layer valve for being connected with valve section fixed cell or replacing insulator unit
3 quantity of segment frames is identical, if Awaiting Overhaul layer insulation 6 is located at the longitudinal side of valve tower, be connected with valve section fixed cell or
There are two the upper layer valve segment frames 3 of replacing insulator unit are total, then there are two 8 quantity of lifting rope；If Awaiting Overhaul layer insulation son 6
In the longitudinal middle part of valve tower, be connected with the upper layer valve segment frames 3 of valve section fixed cell or replacing insulator unit altogether there are three,
Then there are three 8 quantity of lifting rope.
A kind of soft straight sub- repair method of valve tower layer insulation, for overhauling layer insulation 7 of longitudinal side, comprising following
Step:
Step 1: it removes interference part: opening valve tower water main drain valve, top vent valve, inlet valve is closed, by valve tower
Water in upper cooling water pipe drains, and mitigates valve tower weight, removes insulated pull rod, shielding case, grading ring and switching cable duct, releases
Fixed relationship between valve segment frames 3 and layer insulation 7.
Step 2: fixed apparatus for examination and repair: first by the upper connecting rod 201 of two fixation kits 2 and lower pull rod 202 be fixed to
On the upper layer and lower layer valve segment frames 3 of sub 7 opposite sides of the layer insulation of replacement, installation fixed point is located at the both ends of valve segment frames 3, adopts
It is fastened with screw, then adjusts adjusting nut, tighten fixation kit 2, pico- stress；Then one end of two lifting ropes 8 is consolidated
It is scheduled on the suspension hook of valve hall driving, the other end, which is separately fixed at, is connected with two of valve section fixed cell and replacing insulator unit
On upper layer valve segment frames 3, driving hanger is risen, the pico- stress of lifting rope 8 is made；Finally by 101 He of upper cushion block of two telescopic components 1
Lower cushion block 102 is fixed on the upper layer and lower layer valve segment frames 3 of sub 6 sides of Awaiting Overhaul layer insulation, and fixed point is located at valve segment frames 3
Both ends, fastened using screw.
Step 3: replacement Awaiting Overhaul layer insulation 6: the interlayer of Awaiting Overhaul layer insulation 6 and its phase the same side is exhausted
The fastening screw of 7 upper and lower ends of edge unclamps, and two jack 103 is respectively installed in two telescopic components 1, and pass through pin
Upper layer valve segment frames 3 are slowly jacked up 5-10mm, are then turned off hydraulic cylinder pressure maintaining by 106 limit of nail, later on hydraulic pump 1041
Valve tightens the locking nut 1031 on jack 103, then extracts layer insulation 7 of Awaiting Overhaul out, replaces a new interlayer
Insulator 7, it is with fastening screw that layer insulation 7 and upper and lower level valve segment frames 3 is fixed, it finally unclamps locking nut 1031 and protects
Pressure valve, slow release pressure.
Step 4: removing apparatus for examination and repair, and insulated pull rod, shielding case, grading ring and switching cable duct are resetted.
The sub- apparatus for examination and repair of soft straight valve tower layer insulation of the present invention and method, can be realized 7 safety of layer insulation,
Effective maintenance, efficiently solves high-voltage large-capacity flexible direct current converter valve because mutually closing between huge structure, layer insulation 7
Maintenance difficulty, the higher problem of danger coefficient of layer insulation 7 caused by connection.
In the present specification, identical embodiment is not necessarily referring to the schematic representation of the term.Moreover, description
Particular features, structures, materials, or characteristics can be combined in any suitable manner in any one or more embodiments.
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff is complete
Various changes and amendments can be carried out without departing from the scope of the technological thought of the present invention' entirely.The technology of this invention
Property range is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (10)
1. a kind of soft straight sub- apparatus for examination and repair of valve tower layer insulation characterized by comprising
Replacing insulator unit includes at least two groups telescopic component (1), plane where telescopic component described in every group (1) with every layer
Plane where valve segment frames (3) is parallel, and the telescopic component (1) is fixed on up and down the two of sub (6) side of Awaiting Overhaul layer insulation
On layer valve segment frames (3), and it can adjust between the upper layer and lower layer valve segment frames (3) of sub (6) side of Awaiting Overhaul layer insulation
Distance；
Valve section fixed cell includes at least two groups fixation kit (2) plane and every layer of valve where fixation kit described in every group (2)
Plane where segment frames (3) is parallel, and the fixation kit (2) is fixed on up and down the two of sub (6) opposite side of Awaiting Overhaul layer insulation
On layer valve segment frames (3), it is suitable between the upper layer and lower layer valve segment frames (3) of sub (6) opposite side of fixed Awaiting Overhaul layer insulation
Distance.
2. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 1, it is characterised in that: the telescopic component
(1) the upper cushion block is fixed on comprising upper cushion block (101), lower cushion block (102) and jack (103), the jack (103)
(101) between lower cushion block (102), jack (103) connection is suitable for jacking up the pressurizing device (104) of the jack (103),
The upper end of the upper cushion block (101) and upper layer valve segment frames (3) are fixed；The lower end of the lower cushion block (102) and lower layer's valve section frame
Frame (3) is fixed.
3. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 2, it is characterised in that: the jack
It (103) is double-action jack, the pressurizing device (104) includes hydraulic pump (1041) and distributor (1042), described hydraulic
Pump (1041), distributor (1042) and jack (103) are successively sequentially connected by high-pressure hose (1043).
4. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 3, it is characterised in that: the fixation kit
It (2) include adjusting screw rod (203) and upper connecting rod (201) and the drop-down for being threadedly connected to the adjusting screw rod (203) both ends respectively
Bar (202), the upper end of the upper connecting rod (201) and upper layer valve segment frames (3) are fixed；The lower end of the lower pull rod (202) is under
Layer valve segment frames (3) are fixed.
5. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 4, it is characterised in that: the adjusting screw rod
(203) thread segment (2031) comprising intermediate fastening section (2032) and connection intermediate fastening section (2032) both ends, two institutes
It states thread segment (2031) to be threadedly coupled with the upper connecting rod (201) and lower pull rod (202) respectively, the intermediate fastening section (2032)
Fabrication hole (2033) are equipped with for the side of outer-hexagonal structure and/or the intermediate fastening section (2032).
6. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 2, it is characterised in that: the lower cushion block
(102) and the connecting end surface of upper cushion block (101) and the jack (103) is equipped with circular groove (105), the circular groove
(105) pin hole is equipped in, pin (106) is inserted into pin (106) hole for the lower cushion block (102) and upper cushion block (101)
It is connect with the jack (103) end.
7. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 6, it is characterised in that: the jack
(103) axial stretching movement is done comprising cylinder body (1032) and positioned at the cylinder body (1032) inside and along the cylinder body (1032)
It comes directly towards (1033), described top (1033) outer end is threaded with the locking nut that can be against the cylinder body (1032) end
(1031)。
8. the soft straight sub- apparatus for examination and repair of valve tower layer insulation according to claim 1, it is characterised in that: the soft straight valve tower layer
Between insulator apparatus for examination and repair further include two lifting ropes (8), two described lifting rope (8) one end are separately connected two, upper layer valve segment frames
(3), lifting rope (8) other end connects travelling crane hook.
9. a kind of soft straight sub- repair method of valve tower layer insulation, which is characterized in that comprise the steps of:
Step 1: removing interference part: the water in valve tower in cooling water pipe drained, and removes insulated pull rod, shielding case, grading ring
With switching cable duct；
Step 2: valve section fixed cell fixed apparatus for examination and repair: is installed to up and down the two of the sub- opposite side of layer insulation to be replaced
On layer valve segment frames (3)；Replacing insulator unit is fixed to the upper layer and lower layer valve section frame of sub (6) side of Awaiting Overhaul layer insulation
On frame (3)；
Step 3: replacement Awaiting Overhaul layer insulation is sub (6): the interlayer of Awaiting Overhaul layer insulation sub (6) and its phase the same side is exhausted
The fastening screw of edge (7) upper and lower ends unclamps, and upper layer valve segment frames (3) are slowly jacked up 5- by replacing insulator unit
10mm, extraction Awaiting Overhaul layer insulation is sub (6), and the new layer insulation of replacement one is sub (7), and new layer insulation is sub (7)
It is fixed with upper and lower level valve segment frames (3)；
Step 4: removing apparatus for examination and repair, and insulated pull rod, shielding case, grading ring and switching cable duct are resetted.
10. the soft straight sub- repair method of valve tower layer insulation according to claim 9, it is characterised in that:, will be in step 3
After the fastening screw release of sub (7) upper and lower ends of layer insulation for overhauling layer insulation sub (6) and its phase the same side, then each
A jack (103) are installed in telescopic component (1), and are limited by pin (106), later on hydraulic pump (1041) will be upper
Layer valve segment frames (3) jack up.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584491.1A CN110265907B (en) | 2019-07-01 | 2019-07-01 | Flexible straight valve tower interlayer insulator overhauling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910584491.1A CN110265907B (en) | 2019-07-01 | 2019-07-01 | Flexible straight valve tower interlayer insulator overhauling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110265907A true CN110265907A (en) | 2019-09-20 |
| CN110265907B CN110265907B (en) | 2021-05-11 |
Family
ID=67923535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910584491.1A Active CN110265907B (en) | 2019-07-01 | 2019-07-01 | Flexible straight valve tower interlayer insulator overhauling device |
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| Country | Link |
|---|---|
| CN (1) | CN110265907B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111807237A (en) * | 2020-06-29 | 2020-10-23 | 国网福建省电力有限公司检修分公司 | Overhauling device suitable for replacing M2000 type high-pressure flexible straight converter valve submodule and working method thereof |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110265907B (en) | 2021-05-11 |
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