CN109755908A - GIS busbar and its busbar expansion joint - Google Patents
GIS busbar and its busbar expansion joint Download PDFInfo
- Publication number
- CN109755908A CN109755908A CN201811564941.2A CN201811564941A CN109755908A CN 109755908 A CN109755908 A CN 109755908A CN 201811564941 A CN201811564941 A CN 201811564941A CN 109755908 A CN109755908 A CN 109755908A
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- busbar
- spring
- bus
- sleeve
- bellows
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- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000005611 electricity Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 description 14
- 230000006835 compression Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 10
- 229910001220 stainless steel Inorganic materials 0.000 description 6
- 239000010935 stainless steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000004323 axial length Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000013475 authorization Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
- Joints Allowing Movement (AREA)
Abstract
The present invention relates to project of transmitting and converting electricity technical field, in particular to a kind of GIS bus and its bus telescoping section.Bus telescoping section in the GIS bus includes the forward flange and rear flange along bus axis arrangement, bellows is connected between forward flange and rear flange, bus telescoping section further includes the elastic parts being connected between forward flange and rear flange, elastic parts includes the sleeve being fixedly connected with forward flange and the transmission rod that is fixedly connected with rear flange, transmission rod protrudes into sleeve, is provided with helical spring between the power transmission bar part protruded into sleeve and the rear end of sleeve；Helical spring docks with bus cylinder in bus telescoping section and when the non-stress deformation of bellows, and the sum of spacing of each adjacent turn is not more than the maximum allowable amount of tension of bellows.The bus telescoping section can be used for solving the problem of that telescopic joint dilatation range is small in the prior art while can also solve to lead to bus cylinder or telescopic joint itself structural failure because telescopic joint deformation range is small.
Description
Technical field
The present invention relates to project of transmitting and converting electricity technical field, in particular to a kind of GIS bus and its bus telescoping section.
Background technique
GIS(Cubicle Gas-Insulated Switchgear) it is one of important equipment during substation transmits electric power,
Security reliability is that substation stablizes the primary condition to transmit electric power.In GIS engineering, GIS bus can be made due to expanding with heat and contract with cold
It is bent expansion and the leakage of GIS bus built-in electrical insulation gas at GIS bus, substation is in turn resulted in and is unable to reliability service, finally may be used
Safety accident can be caused, in order to avoid such case generation, connection bus between adjacent bus cylinder is typically employed at present and stretches
Casing coupling compensates the deflection that GIS bus is generated due to expanding with heat and contract with cold, while balance dress can be also installed on bus telescoping section
It sets, balancing device is used to balance the pulling force because filling in bus bar canister body plus insulating gas due to generates bus cylinder to telescopic joint.
July in 2014 Granted publication on the 16th Authorization Notice No. be CN203718253U Chinese patent document in describe
A kind of balanced type stainless steel telescopic joint, which includes corrugated stainless steel tubing, at the both ends of corrugated stainless steel tubing
Front shoe and rear fixed plate is respectively set；The stainless steel telescopic joint further includes balancing device, and balancing device is fixed on two fixations
Between plate, balancing device includes compression cylinder, disk spring and stretch rod, wherein compression cylinder front end is fixed with front shoe, is stretched
The front end of bar is protruded into compression cylinder from the rear end of compression cylinder, and the rear end of stretch rod is fixed on rear fixed plate, the front end of stretch rod
After protruding into compression cylinder, it is elastically engaged by the rear end of disk spring and compression cylinder.The balanced type stainless steel telescopic joint is installed
After in GIS bus, when filling insulating gas into GIS bus, the bus bar canister of GIS bus, which is known from experience, pulls telescopic joint to transport to both ends
It is dynamic, since compression cylinder and stretch rod are fixed by front shoe and rear fixed plate respectively, so the disk spring meeting in balancing device
By compression to balance pulling force suffered by telescopic joint, to guarantee that pulling force suffered by telescopic joint is balanced rear bellows and is in nature
State, preferably to compensate the deflection that GIS bus expands with heat and contract with cold in subsequent use process.
Although above-mentioned balanced type stainless steel telescopic joint can balance GIS bus to the pulling force of telescopic joint, its balancing device
Middle use disk spring can lead to the problem of following: 1) deformability of disk spring is poor, and dilatation range is small, adapts to
Property is poor；2) when filling plus insulating gas, bus bar canister, which is known from experience, generates pulling force to bus telescoping section, this pulling force needs pass through balance
Device balances, and the rigidity of disk spring is larger, and then causes the rigidity of balancing device larger, stretch in bus cylinder with bus
It is likely to that bus cylinder or telescopic joint is caused to deform when generating active force between casing coupling.
Summary of the invention
The object of the present invention is to provide a kind of bus telescoping sections, for solving telescopic joint dilatation range in the prior art
Small problem；The present invention also provides a kind of GIS bus, for solve because telescopic joint deformation range is small cause bus cylinder or
The problem of telescopic joint structural failure itself.
To achieve the above object, bus telescoping section of the present invention uses following technical scheme: the bus telescoping section packet
Forward flange and rear flange along bus axis arrangement are included, bellows is connected between forward flange and rear flange, bus telescoping section is also
Including the elastic parts being connected between forward flange and rear flange, elastic parts include the sleeve being fixedly connected with forward flange and with
The transmission rod that rear flange is fixedly connected, transmission rod protrude into sleeve, protrude into the power transmission bar part and sleeve in sleeve rear end it
Between be provided with helical spring；Helical spring docks with bus cylinder in bus telescoping section and when the non-stress deformation of bellows, each
The sum of spacing of adjacent turn is not more than the maximum allowable amount of tension of bellows.
The beneficial effect of bus telescoping section of the present invention is: spiral shell is used in the elastic parts in the bus telescoping section
Spring is revolved, the deformability of helical spring is strong, and deformation range is big, is meeting drawing of the elastic parts balance bus cylinder to telescopic joint
After power, there are also enough distortion allowances to adapt to deformation when GIS bus expanded by heating；And helical spring is cheap,
The cost of telescopic joint can be reduced；It can be set when in addition, selecting helical spring and docked in bus telescoping section with bus cylinder
And when the non-stress deformation of bellows, the sum of spacing of each adjacent turn of helical spring is not more than the maximum allowable amount of tension of bellows,
To prevent bellows excessive tensile to damage its structure.
Further, helical spring include by axis of rotation be overlapped in a manner of be set in together, radial dimension it is different
Big spring and little spring.
Beneficial effect improved in this way is: the big spring and small bullet being set in together in such a way that axis of rotation is overlapped is arranged
The deformability of helical spring can be enhanced in spring, without improving its deformability by the diameter for increasing helical spring,
And then it can guarantee that the radial dimension of telescopic joint is unlikely to excessive.
Further, the big spring and little spring is oppositely oriented.
Beneficial effect improved in this way is: setting can prevent big spring and little spring in compressive deformation and occur askew in this way
The further compressive deformation for influencing helical spring is entered between the bullet circle of other side each other when tiltedly.
Further, transmission rod includes screw rod and the attachment base that is screwed on screw rod, the trailing flank of attachment base and big spring
Cooperation is supported with little spring.
Beneficial effect improved in this way is: attachment base is arranged on screw rod can be used for pressing big spring and little spring, and
Attachment base, which is screwed on screw rod, to be machined with error in order to adjust attachment base relative to the position of screw rod to adapt to individual part
The case where.
Further, the side far from large and small spring of attachment base is provided with deep gouge, and the deep gouge is for receiving and screw rod
The nut being spirally connected.
Beneficial effect improved in this way is: deep gouge is arranged on attachment base can occupy for placing nut to avoid nut
Space outside attachment base, and then the axial length of telescopic joint can be shortened.
The technical solution of GIS bus of the present invention: the GIS bus includes bus cylinder and bus telescoping section, bus
Telescopic joint includes the forward flange and rear flange along bus axis arrangement, and bellows, bus are connected between forward flange and rear flange
Telescopic joint further includes the elastic parts being connected between forward flange and rear flange, and elastic parts includes being fixedly connected with forward flange
Sleeve and the transmission rod being fixedly connected with rear flange, transmission rod protrude into sleeve, protrude into power transmission bar part and sleeve in sleeve
Rear end between be provided with helical spring；When the non-stress deformation of bellows, the sum of spacing of each adjacent turn of helical spring is little
In the maximum allowable amount of tension of the bellows.
The beneficial effect of GIS bus of the present invention is: helical spring is used in the elastic parts of bus telescoping section,
The deformability of helical spring is strong, and deformation range is big, after meeting elastic parts balance bus cylinder to the pulling force of telescopic joint, also
There are enough distortion allowances to adapt to deformation when GIS bus expanded by heating；And helical spring is cheap, can reduce
The cost of telescopic joint；It can be set when in addition, selecting helical spring in the non-stress deformation of bellows, each circle of helical spring
The sum of spacing is not more than the maximum allowable amount of tension of bellows, to prevent bellows excessive tensile to damage its structure；Using upper
The GIS bus of bus telescoping section is stated, not only lower production costs, but also can excessively be drawn to avoid because of the bellows in telescopic joint
The case where GIS bus that may cause when stretching and damaging telescopic joint damages.
Further, helical spring include by axis of rotation be overlapped in a manner of be set in together, radial dimension it is different
Big spring and little spring.
Beneficial effect improved in this way is: the big spring and small bullet being set in together in such a way that axis of rotation is overlapped is arranged
The deformability of helical spring can be enhanced in spring, without improving its deformability by the diameter for increasing helical spring,
And then it can guarantee that the radial dimension of telescopic joint is unlikely to excessive.
Further, the big spring and little spring is oppositely oriented.
Beneficial effect improved in this way is: setting can prevent big spring and little spring in compressive deformation and occur askew in this way
The further compressive deformation for influencing helical spring is entered between the bullet circle of other side each other when tiltedly.
Further, transmission rod includes screw rod and the attachment base that is screwed on screw rod, the trailing flank of attachment base and big spring
Cooperation is supported with little spring.
Beneficial effect improved in this way is: attachment base is arranged on screw rod can be used for pressing big spring and little spring, and
Attachment base, which is screwed on screw rod, to be machined with error in order to adjust attachment base relative to the position of screw rod to adapt to individual part
The case where.
Further, the side far from large and small spring of attachment base is provided with deep gouge, and the deep gouge is for receiving and screw rod
The nut being spirally connected.
Beneficial effect improved in this way is: deep gouge is arranged on attachment base can occupy for placing nut to avoid nut
Space outside attachment base, and then the axial length of telescopic joint can be shortened.
Detailed description of the invention
Fig. 1 is the telescopic joint and bus cylinder connection schematic diagram of the embodiment 1 of GIS bus of the present invention；
Fig. 2 is the main view of the telescopic joint in the embodiment 1 of GIS bus of the present invention；
Fig. 3 is the side view of Fig. 2；
Fig. 4 is the structural schematic diagram of the elastic parts of the telescopic joint in the embodiment 1 of GIS bus of the present invention；
Fig. 5 is the structural representation of the snap ring in the elastic parts of the telescopic joint in the embodiment 1 of GIS bus of the present invention
Figure.
In attached drawing: 1- bus cylinder, 2- telescopic joint, 21- elastic parts, 22- bellows, 23- forward flange, 24- rear flange,
211- sleeve, 212- screw rod, 213- attachment base, 214- big spring, 215- little spring, 216- drive end bearing bracket, 217- rear end cap, 218-
Snap ring, 219- location nut, 210- fixture nut, 2131- positioning convex platform, 2132- deep gouge, 2161- blind hole, 2181- arc section,
2182- snap arm.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.
The embodiment 1 of GIS bus of the present invention, as shown in Figure 1, including bus cylinder 1 and the adjacent bus bar canister of connection
The telescopic joint 2 of body 1, telescopic joint 2 constitute bus telescoping section.
As shown in Fig. 2, the telescopic joint 2 in the present embodiment 1 is including bellows 22 and before 22 front and rear ends of bellows
Flange 23 and rear flange 24, forward flange 23 and rear flange 24 with bus cylinder 1 for being connected and fixed, and bellows 22 is for compensating mother
What spool body 1 was generated because expanding with heat and contract with cold deforms and guarantees the leakproofness between adjacent bus cylinder 1；In the outer of bellows 22
Elastic parts 21 is also equipped between side, forward flange 23 and rear flange 24, elastic parts 21 adds for filling in balance bus cylinder 1
The pulling force that bus bar canister body 1 generates telescopic joint 2 after insulating gas.
As shown in figure 3, in the present embodiment 1, in order to filled in balance bus cylinder 1 plus insulating gas after telescopic joint 2 is produced
Raw pulling force is equipped with 24 groups of elastic parts, 21,24 groups of elastic parts 21 altogether on the outside of bellows 22 and is distributed in wave
22 outside of line pipe.Certainly, in other embodiments, the quantity of elastic parts can be increased and decreased according to actual needs.
As shown in Figure 2 and Figure 4, elastic parts 21 includes sleeve 211, and the front and back ends of sleeve 211 are separately installed with drive end bearing bracket
216 and rear end cap 217, a blind hole 2161 is offered on drive end bearing bracket 216, offers internal screw thread, forward flange in blind hole 2161
Position corresponding with blind hole 2161 offers a through-hole on 23, and by bolt that drive end bearing bracket 216 and forward flange 23 is fixed.
As shown in figure 4, offering a through hole on rear end cap 217, screw rod 212 passes through through hole and extend into sleeve
In 211, the end that screw rod 212 protrudes into sleeve 211 is equipped with an attachment base 213, offers on attachment base 213 for screw rod
212 through-holes passed through, screw rod 212 and attachment base 213 constitute transmission rod together, and screw rod 212 protrudes into the setting of the end in sleeve 211
There is external screw thread and prevent attachment base 213 to be detached from from screw rod 212 by fixture nut 210, is accounted for reduce fixture nut 210
Space in sleeve 211 offers deep gouge 2132 on attachment base 213, and 210 standing back of fixture nut is in deep gouge 2132
It is interior, after fixture nut 210 is mounted on screw rod 212 and adjusts the position of attachment base 213, destroy the screw thread of 212 end of screw rod
To prevent fixture nut 210 from loosening.In other embodiments, screw rod and attachment base can also be fixed by other methods, such as be existed
Internal screw thread is opened up in through-hole on attachment base, cooperates fixation or screw rod and attachment base to be welded and fixed with the external screw thread on screw rod,
It is all satisfied requirement.Deep gouge can not also be opened up on attachment base, the outside of attachment base is located at after fixture nut installation, and same satisfaction is wanted
It asks.
As shown in Fig. 2, after one end that screw rod 212 does not extend into sleeve 211 passes through rear flange 24 and is fixed on by nut
On flange 24, the through hole passed through for screw rod 212 is offered on corresponding rear flange 24.
As shown in figure 4, in sleeve 211, be provided between the outside of screw rod 212, attachment base 213 and rear end cap 217 with
Axis of rotation be overlapped mode is set in together, big spring 214 and little spring 215 that radial dimension is different, 214 He of big spring
Little spring 215 is helical spring, and big spring 214 and little spring 215 are sleeved on screw rod 212, big spring 214 and little spring
215 both ends cooperate with attachment base 213 and the press of rear end cap 217 respectively, in order to guarantee big spring 214 and little spring 215 in quilt
It is not in that mutual bullet circle protrudes between the bullet circle of other side when compression, big spring 214 and the oppositely oriented of little spring 215 are set
It sets.Certainly, in other embodiments, the rotation direction of big spring and little spring identical also can be used.
As shown in figure 4, fix little spring 215 for convenience and prevent little spring 215 from generating beat in compression process,
Positioning convex platform 2131 is provided on attachment base 213, little spring 215 is sleeved on positioning convex platform 2131.In other embodiments, even
It can also be not provided with positioning convex platform on joint chair, can also use.
As shown in figure 4, being also equipped with two location nuts 219 on screw rod 212, location nut 219 is used in bellows
22 when being compressed with 217 block of rear end cap to prevent bellows 22 to be overly compressed, when location nut 219 and rear end cap 217 are kept off
When only, bellows 22 is within its safe compression limit.In other embodiments, location nut can be set one, equally
It meets the requirements；Location nut can also be replaced with other structures, the protrusion being such as set on screw rod.
The selection of big spring 214 and little spring 215 needs to meet following condition: when big spring 214 and little spring 215 are pressed
When being reduced to doubling-up, the amount of tension of bellows 22 is not up to the safe limit of stretch of 22 normal use of bellows, can prevent in this way
Bellows 22 is stretched excessively and damages.After doubling-up described herein refers to that spring is compressed into the limit, all bullet circles it
Between gapless, spring can not compressed state again.
Elastic parts in a pre-installation, needs to compress big spring 214 and little spring 215 and makes screw rod 212 relative to sleeve 211
It moves to the back-end, when moving in place, a snap ring 218,218 knot of snap ring is clamped between location nut 219 and rear end cap 217
Structure is as shown in figure 5, snap ring 218 includes the arc section 2181 being bonded with screw rod 212 and is used for by what arc section 2181 extended out
The snap arm 2182 of screw rod 212 is blocked, snap ring 218 is a designed fixed value along the width of 212 length direction of screw rod, this is solid
Definite value guarantees that big spring 214 and little spring 215 have a fixed elastic force, and the big bullet in 24 elastic parts 21 at this time
The drawing to telescopic joint 2 for adding and generating after insulating gas is filled in the sum of fixation elastic force of spring 214 and little spring 215 and bus cylinder 1
Power is identical；After big spring 214 and the compression in place of little spring 215, the gap between attachment base 213 and drive end bearing bracket 216 be should ensure that
Enough bellowss 22 screw rod 212 when by compressive deformation is moved forward without by block.
After snap ring 218 clamps, elastic parts 21 is mounted on composition telescopic joint 2 on bellows 22, then pacifies telescopic joint 2
Between adjacent bus cylinder 1.
Add insulating gas in use, filling first into GIS bus, after the completion of insulating gas fills and adds, removes elastic parts
Snap ring 218 in 21, the sum of elastic force of big spring 214 and little spring 215 is equal to bus in 24 groups of elastic parts 21 at this time
Cylinder 1 is to the pulling force of telescopic joint 2, so screw rod 212 will not be mobile relative to sleeve 211, bellows is in non-stress shape at this time
State, and original state corresponding with the bus cylinder not expanded with heat and contract with cold；When GIS bus is shunk, bellows 22
It is stretched, screw rod 212 is moved backward relative to sleeve 211, and screw rod 212 is in big spring relative to the moving limit of sleeve 211
214 or when 215 doubling-up of little spring occur, the stretching of bellows 22 at this time is not up to its safe limit of stretch, so will not damage
Bellows 22；When GIS bus expands, the correspondence of bellows 22 is compressed, and screw rod 212 is moved forward relative to sleeve 211,
When the 217 mutual block of rear end cap of location nut 219 and sleeve 211, the compression of bellows 22 is not up to its safe compression stage
Limit, so bellows 22 will not be damaged.
The embodiment 2 of GIS bus of the present invention, the difference from embodiment 1 is that, helical spring is only arranged one
A, which can play the role of big spring and little spring in above-described embodiment 1 plays jointly.
The present invention also provides a kind of bus telescoping section, the bus telescoping section and the bus telescoping section in above-mentioned GIS bus
Structure is identical, and details are not described herein again.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564941.2A CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS busbar and its busbar expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564941.2A CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS busbar and its busbar expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109755908A true CN109755908A (en) | 2019-05-14 |
| CN109755908B CN109755908B (en) | 2021-05-25 |
Family
ID=66403858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564941.2A Active CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS busbar and its busbar expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109755908B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600081A (en) * | 2020-12-11 | 2021-04-02 | 中南大学 | Telescopic tube bus for transformer substation |
| CN114619379A (en) * | 2020-12-11 | 2022-06-14 | 河南平高电气股份有限公司 | An expansion joint adjustment tool and its flange clamp |
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| JPH0731040A (en) * | 1993-07-12 | 1995-01-31 | Toshiba Corp | Gas insulated bus |
| CN2314214Y (en) * | 1997-12-30 | 1999-04-14 | 机械工业部沈阳仪器仪表工艺研究所 | Force balancing corrugated compensator |
| JP2001157346A (en) * | 1999-11-24 | 2001-06-08 | Mitsubishi Electric Corp | Gas-insulated switchgear |
| CN2797765Y (en) * | 2005-05-26 | 2006-07-19 | 王海力 | Damper used for noise silencer |
| CN102889326A (en) * | 2012-10-15 | 2013-01-23 | 安徽江淮汽车股份有限公司 | Spiral spring without parallel ring |
| CN203718253U (en) * | 2013-12-31 | 2014-07-16 | 无锡恒驰电器制造有限公司 | Balanced metal expansion joint |
| CN206481017U (en) * | 2017-01-09 | 2017-09-08 | 河南平高电气股份有限公司 | A kind of busbar assembly and the GIS device using the busbar assembly |
| CN206727558U (en) * | 2017-04-28 | 2017-12-08 | 国网河南渑池县供电公司 | A kind of cable anchor ear of angle adjustable |
| CN108413133A (en) * | 2018-05-30 | 2018-08-17 | 华南理工大学 | A kind of antidetonation suspension and support based on variable rate spring vibration damping |
| CN208257553U (en) * | 2018-06-15 | 2018-12-18 | 灵山鸿源机电设备有限公司 | A kind of stable type industrial motor being easily installed |
-
2018
- 2018-12-20 CN CN201811564941.2A patent/CN109755908B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731040A (en) * | 1993-07-12 | 1995-01-31 | Toshiba Corp | Gas insulated bus |
| CN2314214Y (en) * | 1997-12-30 | 1999-04-14 | 机械工业部沈阳仪器仪表工艺研究所 | Force balancing corrugated compensator |
| JP2001157346A (en) * | 1999-11-24 | 2001-06-08 | Mitsubishi Electric Corp | Gas-insulated switchgear |
| CN2797765Y (en) * | 2005-05-26 | 2006-07-19 | 王海力 | Damper used for noise silencer |
| CN102889326A (en) * | 2012-10-15 | 2013-01-23 | 安徽江淮汽车股份有限公司 | Spiral spring without parallel ring |
| CN203718253U (en) * | 2013-12-31 | 2014-07-16 | 无锡恒驰电器制造有限公司 | Balanced metal expansion joint |
| CN206481017U (en) * | 2017-01-09 | 2017-09-08 | 河南平高电气股份有限公司 | A kind of busbar assembly and the GIS device using the busbar assembly |
| CN206727558U (en) * | 2017-04-28 | 2017-12-08 | 国网河南渑池县供电公司 | A kind of cable anchor ear of angle adjustable |
| CN108413133A (en) * | 2018-05-30 | 2018-08-17 | 华南理工大学 | A kind of antidetonation suspension and support based on variable rate spring vibration damping |
| CN208257553U (en) * | 2018-06-15 | 2018-12-18 | 灵山鸿源机电设备有限公司 | A kind of stable type industrial motor being easily installed |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112600081A (en) * | 2020-12-11 | 2021-04-02 | 中南大学 | Telescopic tube bus for transformer substation |
| CN112600081B (en) * | 2020-12-11 | 2021-08-31 | 中南大学 | Expansion pipe busbar for substation |
| CN114619379A (en) * | 2020-12-11 | 2022-06-14 | 河南平高电气股份有限公司 | An expansion joint adjustment tool and its flange clamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109755908B (en) | 2021-05-25 |
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