CN109755908B - GIS bus and bus expansion joint thereof - Google Patents
GIS bus and bus expansion joint thereof Download PDFInfo
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- CN109755908B CN109755908B CN201811564941.2A CN201811564941A CN109755908B CN 109755908 B CN109755908 B CN 109755908B CN 201811564941 A CN201811564941 A CN 201811564941A CN 109755908 B CN109755908 B CN 109755908B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 23
- 230000000903 blocking effect Effects 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 2
- 230000009466 transformation Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 description 16
- 230000006835 compression Effects 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 7
- 235000017491 Bambusa tulda Nutrition 0.000 description 7
- 241001330002 Bambuseae Species 0.000 description 7
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 7
- 239000011425 bamboo Substances 0.000 description 7
- 239000002184 metal Substances 0.000 description 5
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 125000003003 spiro group Chemical group 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009421 internal insulation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The invention relates to the technical field of power transmission and transformation engineering, in particular to a GIS bus and a bus expansion joint thereof. The bus expansion joint in the GIS bus comprises a front flange and a rear flange which are arranged along the axis of the bus, a corrugated pipe is connected between the front flange and the rear flange, the bus expansion joint also comprises an elastic component connected between the front flange and the rear flange, the elastic component comprises a sleeve fixedly connected with the front flange and a dowel bar fixedly connected with the rear flange, the dowel bar extends into the sleeve, and a spiral spring is arranged between the part of the dowel bar extending into the sleeve and the rear end of the sleeve; when the bus expansion joint is butted with the bus cylinder body and the corrugated pipe is not stressed and deformed, the sum of the distances between every two adjacent circles of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe. The bus expansion joint can be used for solving the problem that the expansion joint in the prior art is small in expansion deformation range, and meanwhile, the problem that the bus barrel or the expansion joint is damaged due to the fact that the expansion joint is small in deformation range can be solved.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation engineering, in particular to a GIS bus and a bus expansion joint thereof.
Background
GIS (gas insulated metal enclosed switchgear) is one of important devices in the process of transmitting power to a substation, and its safety and reliability are basic conditions for stable transmission of power to the substation. In GIS engineering, GIS generating line can cause GIS generating line bending expansion and GIS generating line internal insulation gas to leak outward owing to expend with heat and contract with cold, and then cause the transformer substation to can not reliably operate, finally probably cause the incident, in order to avoid this kind of condition to take place, at present usually adopt between adjacent generating line barrel to connect the generating line telescopic joint and compensate GIS generating line because of expend with heat and contract with cold the deflection that produces, still can install balancing unit on the generating line telescopic joint simultaneously, balancing unit is used for balancing because of filling insulating gas and making the generating line barrel to the tensile force of telescopic joint production in the generating line barrel.
Chinese patent document No. CN203718253U, entitled, issued 7/16/2014, describes a balanced metal expansion joint, which includes a stainless steel corrugated pipe, and a front fixing plate and a rear fixing plate are respectively disposed at two ends of the stainless steel corrugated pipe; this metal telescopic joint still includes balancing unit, and balancing unit fixes between two fixed plates, and balancing unit includes a compression section of thick bamboo, belleville spring and tensile pole, and wherein, compression section of thick bamboo front end is fixed with preceding fixed plate, and in the front end of tensile pole stretched into a compression section of thick bamboo from the rear end of a compression section of thick bamboo, the rear end of tensile pole was fixed on the rear plate, and the front end of tensile pole stretched into a compression section of thick bamboo in the back, its rear end elastic fit through belleville spring and a compression section of thick bamboo. Install this balanced type metal telescopic joint back in the GIS generating line, when filling up insulating gas to the GIS generating line, the generating line barrel of GIS generating line can stimulate the telescopic joint to the both ends motion, because compression section of thick bamboo and tensile pole are fixed by preceding fixed plate and after-fixing board respectively, thereby belleville spring among the balancing unit can be compressed the pulling force that balanced telescopic joint received, thereby guarantee that the pulling force that the telescopic joint received is in natural state by bellows after balancing, take place the deflection of expend with heat and contract with the GIS generating line in the follow-up use of better compensation.
Although the balanced metal expansion joint can balance the pulling force of the GIS bus bar to the expansion joint, the use of the disc spring in the balancing device can cause the following problems: 1) the deformation capability of the disc spring is poor, the expansion deformation range is small, and the adaptability is poor; 2) when filling with insulating gas, the generating line barrel can produce pulling force to the generating line telescopic joint, and this pulling force needs balance through balancing unit, and belleville spring's rigidity is great, and then leads to balancing unit's rigidity great, can cause generating line barrel or telescopic joint to warp probably when producing the effort between generating line barrel and generating line telescopic joint.
Disclosure of Invention
The invention aims to provide a bus expansion joint, which is used for solving the problem that the expansion joint in the prior art has a small expansion deformation range; the invention also provides a GIS bus, which is used for solving the problem that the structure of a bus barrel or a telescopic joint is damaged due to the small deformation range of the telescopic joint.
In order to achieve the purpose, the bus expansion joint adopts the following technical scheme: the bus expansion joint comprises a front flange and a rear flange which are arranged along the axis of a bus, a corrugated pipe is connected between the front flange and the rear flange, the bus expansion joint also comprises an elastic assembly connected between the front flange and the rear flange, the elastic assembly comprises a sleeve fixedly connected with the front flange and a force transmission rod fixedly connected with the rear flange, the force transmission rod extends into the sleeve, and a spiral spring is arranged between the part of the force transmission rod extending into the sleeve and the rear end of the sleeve; when the bus expansion joint is butted with the bus cylinder body and the corrugated pipe is not stressed and deformed, the sum of the distances between every two adjacent circles of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe.
The bus expansion joint has the beneficial effects that: the elastic assembly in the bus expansion joint adopts the spiral spring, the spiral spring has strong deformation capacity and large deformation range, and after the elastic assembly balances the tension of the bus barrel on the expansion joint, enough deformation allowance is provided to adapt to the deformation of the GIS bus when the GIS bus is heated and expanded; the cost of the expansion joint can be reduced due to the low price of the spiral spring; in addition, when the bus expansion joint is in butt joint with the bus cylinder body and the corrugated pipe is not stressed and deformed, the sum of the distances between every two adjacent circles of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe, so that the corrugated pipe is prevented from being excessively stretched and damaged.
Further, the coil spring includes a large spring and a small spring which are nested together in such a manner that the axes of rotation coincide and which are different in radial dimension.
The beneficial effects of the improvement are as follows: the large spring and the small spring which are sleeved together in a mode of coinciding the rotation axes are arranged, the deformability of the spiral spring can be enhanced, the deformability of the spiral spring does not need to be improved by increasing the diameter of the spiral spring, and the radial size of the expansion joint is not too large.
Further, the rotating directions of the large spring and the small spring are opposite.
The beneficial effects of the improvement are as follows: this arrangement prevents the large spring and the small spring from entering each other between the coils of the other to affect further compression deformation of the coil spring when the large spring and the small spring are deformed in compression and are skewed.
Furthermore, the dowel bar includes screw rod and the connecting seat of spiro union on the screw rod, and the trailing flank and big spring and little spring of connecting seat support the cooperation.
The beneficial effects of the improvement are as follows: the screw rod is provided with the connecting seat which can be used for jacking the large spring and the small spring, and the connecting seat is screwed on the screw rod so as to be convenient for adjusting the position of the connecting seat relative to the screw rod to adapt to the condition that the individual parts have errors in processing.
Furthermore, one side of the connecting seat, which is far away from the large spring and the small spring, is provided with a sinking groove, and the sinking groove is used for accommodating a nut in threaded connection with the screw rod.
The beneficial effects of the improvement are as follows: set up heavy groove in order to be used for placing the nut and can avoid the nut to occupy the outside space of connecting seat on the connecting seat, and then can shorten the axial length of telescopic joint.
The technical scheme of the GIS bus comprises the following steps: the GIS bus comprises a bus barrel and a bus expansion joint, wherein the bus expansion joint comprises a front flange and a rear flange which are arranged along the axis of the bus, a corrugated pipe is connected between the front flange and the rear flange, the bus expansion joint also comprises an elastic component connected between the front flange and the rear flange, the elastic component comprises a sleeve fixedly connected with the front flange and a force transmission rod fixedly connected with the rear flange, the force transmission rod extends into the sleeve, and a spiral spring is arranged between the part of the force transmission rod extending into the sleeve and the rear end of the sleeve; when the corrugated pipe is not deformed under stress, the sum of the distances between every two adjacent turns of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe.
The GIS bus has the beneficial effects that: the elastic assembly of the bus expansion joint adopts the spiral spring, the spiral spring has strong deformation capacity and large deformation range, and after the elastic assembly balances the tension of the bus barrel on the expansion joint, enough deformation allowance is provided to adapt to the deformation of the GIS bus when the GIS bus is heated and expanded; the cost of the expansion joint can be reduced due to the low price of the spiral spring; in addition, when the corrugated pipe is not stressed and deformed, the sum of the distances among the circles of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe, so that the corrugated pipe is prevented from being excessively stretched to damage the structure of the corrugated pipe; the GIS bus adopting the bus expansion joint has the advantages that the production cost is low, and the condition that the GIS bus is damaged possibly caused by the fact that the expansion joint is damaged due to the fact that a corrugated pipe in the expansion joint is excessively stretched can be avoided.
Further, the coil spring includes a large spring and a small spring which are nested together in such a manner that the axes of rotation coincide and which are different in radial dimension.
The beneficial effects of the improvement are as follows: the large spring and the small spring which are sleeved together in a mode of coinciding the rotation axes are arranged, the deformability of the spiral spring can be enhanced, the deformability of the spiral spring does not need to be improved by increasing the diameter of the spiral spring, and the radial size of the expansion joint is not too large.
Further, the rotating directions of the large spring and the small spring are opposite.
The beneficial effects of the improvement are as follows: this arrangement prevents the large spring and the small spring from entering each other between the coils of the other to affect further compression deformation of the coil spring when the large spring and the small spring are deformed in compression and are skewed.
Furthermore, the dowel bar includes screw rod and the connecting seat of spiro union on the screw rod, and the trailing flank and big spring and little spring of connecting seat support the cooperation.
The beneficial effects of the improvement are as follows: the screw rod is provided with the connecting seat which can be used for jacking the large spring and the small spring, and the connecting seat is screwed on the screw rod so as to be convenient for adjusting the position of the connecting seat relative to the screw rod to adapt to the condition that the individual parts have errors in processing.
Furthermore, one side of the connecting seat, which is far away from the large spring and the small spring, is provided with a sinking groove, and the sinking groove is used for accommodating a nut in threaded connection with the screw rod.
The beneficial effects of the improvement are as follows: set up heavy groove in order to be used for placing the nut and can avoid the nut to occupy the outside space of connecting seat on the connecting seat, and then can shorten the axial length of telescopic joint.
Drawings
Fig. 1 is a schematic view of the connection between the expansion joint and the bus bar cylinder in the embodiment 1 of the GIS bus bar of the present invention;
fig. 2 is a front view of a telescopic joint in an embodiment 1 of the GIS bus according to the present invention;
FIG. 3 is a side view of FIG. 2;
fig. 4 is a schematic structural diagram of an elastic component of an expansion joint in embodiment 1 of the GIS bus bar according to the present invention;
fig. 5 is a schematic structural view of a snap ring in an elastic component of an expansion joint in embodiment 1 of the GIS bus bar according to the present invention.
In the drawings: 1-bus barrel, 2-expansion joint, 21-elastic component, 22-corrugated pipe, 23-front flange, 24-rear flange, 211-sleeve, 212-screw rod, 213-connecting seat, 214-large spring, 215-small spring, 216-front end cover, 217-rear end cover, 218-snap ring, 219-positioning nut, 210-fixing nut, 2131-positioning boss, 2132-sinking groove, 2161-blind hole, 2181-circular arc segment and 2182-snap arm.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In an embodiment 1 of the GIS bus of the present invention, as shown in fig. 1, the bus includes a bus barrel 1 and an expansion joint 2 connecting adjacent bus barrels 1, and the expansion joint 2 forms a bus expansion joint.
As shown in fig. 2, the expansion joint 2 in this embodiment 1 includes a corrugated tube 22, and a front flange 23 and a rear flange 24 located at the front end and the rear end of the corrugated tube 22, where the front flange 23 and the rear flange 24 are used to be connected and fixed with the bus bar barrel 1, and the corrugated tube 22 is used to compensate for deformation of the bus bar barrel 1 caused by thermal expansion and cold contraction and ensure the sealing performance between adjacent bus bar barrels 1; an elastic assembly 21 is further installed on the outer side of the corrugated pipe 22 and between the front flange 23 and the rear flange 24, and the elastic assembly 21 is used for balancing the tensile force generated by the bus barrel 1 on the expansion joint 2 after the bus barrel 1 is filled with insulating gas.
As shown in fig. 3, in the present embodiment 1, in order to balance the pulling force generated to the expansion joint 2 after the insulating gas is filled in the bus bar cylinder 1, twenty-four groups of elastic assemblies 21 are installed outside the corrugated tube 22, and the twenty-four groups of elastic assemblies 21 are uniformly distributed outside the corrugated tube 22. Of course, in other embodiments, the number of the elastic components can be increased or decreased according to actual needs.
As shown in fig. 2 and 4, the elastic assembly 21 includes a sleeve 211, a front end cap 216 and a rear end cap 217 are respectively mounted at the front end and the rear end of the sleeve 211, a blind hole 2161 is formed on the front end cap 216, an internal thread is formed in the blind hole 2161, a through hole is formed in the front flange 23 at a position corresponding to the blind hole 2161, and the front end cap 216 and the front flange 23 are fixed by bolts.
As shown in fig. 4, a through hole is formed in the rear end cap 217, the screw 212 penetrates through the through hole and extends into the sleeve 211, a connecting seat 213 is installed at an end portion of the screw 212 extending into the sleeve 211, a through hole through which the screw 212 penetrates is formed in the connecting seat 213, the screw 212 and the connecting seat 213 form a force transmission rod together, an external thread is arranged at an end portion of the screw 212 extending into the sleeve 211, and the connecting seat 213 is prevented from being separated from the screw 212 by a fixing nut 210, in order to reduce a space occupied by the fixing nut 210 in the sleeve 211, a sinking groove 2132 is formed in the connecting seat 213, the fixing nut 210 is located in the sinking groove 2132 after being fixed, the fixing nut 210 is installed on the screw 212 and the position of the connecting seat 213 is adjusted, and then the thread at the end portion of the. In other embodiments, the screw rod and the connecting seat can be fixed by other methods, for example, an internal thread is arranged in the through hole on the connecting seat and is matched and fixed with an external thread on the screw rod, or the screw rod and the connecting seat are welded and fixed, which meet the requirements. The connecting seat can be provided with no sink groove, and the fixing nut is arranged on the outer side of the connecting seat after being installed, so that the requirements are met.
As shown in fig. 2, one end of the screw 212, which does not extend into the sleeve 211, passes through the rear flange 24 and is fixed to the rear flange 24 by a nut, and a through hole through which the screw 212 passes is formed in the corresponding rear flange 24.
As shown in fig. 4, in the sleeve 211, a large spring 214 and a small spring 215 which are sleeved together in a manner that rotation axes are overlapped and have different radial sizes are arranged outside the screw rod 212 and between the connecting seat 213 and the rear end cap 217, both the large spring 214 and the small spring 215 are coil springs, both the large spring 214 and the small spring 215 are sleeved on the screw rod 212, both ends of the large spring 214 and both ends of the small spring 215 are respectively in press fit with the connecting seat 213 and the rear end cap 217, and in order to ensure that the large spring 214 and the small spring 215 do not have elastic rings extending into each other when being compressed, the rotation directions of the large spring 214 and the small spring 215 are arranged oppositely. Of course, in other embodiments, the same direction of rotation for the large and small springs may be used.
As shown in fig. 4, in order to fix the small spring 215 and prevent the small spring 215 from deflecting during the compression process, a positioning boss 2131 is provided on the connecting seat 213, and the small spring 215 is fitted over the positioning boss 2131. In other embodiments, the connecting seat may not be provided with a positioning boss, and the connecting seat may be used as well.
As shown in fig. 4, two retaining nuts 219 are also mounted on the threaded rod 212, the retaining nuts 219 are adapted to stop against the rear end cap 217 when the bellows 22 is compressed to prevent over-compression of the bellows 22, and when the retaining nuts 219 stop against the rear end cap 217, the bellows 22 is within its safe compression limit. In other embodiments, one positioning nut can be arranged, and the requirements are met; the positioning nut may also be replaced by other structures, such as a protrusion provided on the screw.
The selection of the large spring 214 and the small spring 215 needs to satisfy the following conditions: when the large spring 214 and the small spring 215 are compressed to the parallel rings, the stretching amount of the bellows 22 does not reach the safe stretching limit of the normal use of the bellows 22, so that the bellows 22 can be prevented from being excessively stretched and damaged. The parallel coils are in a state that all the coils are free from gaps after the spring is compressed to the limit, and the spring cannot be compressed any more.
Before the elastic components are installed, the large spring 214 and the small spring 215 need to be compressed, the screw rod 212 moves towards the rear end relative to the sleeve 211, when the elastic components move to the right position, a clamping ring 218 is clamped between the positioning nut 219 and the rear end cover 217, the structure of the clamping ring 218 is shown in fig. 5, the clamping ring 218 comprises an arc section 2181 attached to the screw rod 212 and a clamping arm 2182 extending from the arc section 2181 and used for clamping the screw rod 212, the width of the clamping ring 218 in the length direction of the screw rod 212 is a designed fixed value, the fixed value ensures that the large spring 214 and the small spring 215 have a fixed elastic force at the moment, and the sum of the fixed elastic forces of the large spring 214 and the small spring 215 in the twenty-four elastic components 21 is the same as the pulling force generated on the telescopic joint 2 after the insulating gas is filled in the bus; after the large spring 214 and the small spring 215 are compressed to the right, the clearance between the connecting seat 213 and the front end cap 216 should be enough to ensure that the screw 212 moves forward without being blocked when the bellows 22 is compressed and deformed.
After the snap ring 218 is clamped, the elastic component 21 is mounted on the corrugated pipe 22 to form the telescopic joint 2, and then the telescopic joint 2 is mounted between the adjacent bus bar cylinders 1.
When the device is used, firstly, insulating gas is filled into the GIS bus, after the insulating gas is filled, the snap ring 218 in the elastic component 21 is removed, at the moment, the sum of the elastic forces of the large springs 214 and the small springs 215 in the twenty-four groups of elastic components 21 is equal to the tensile force of the bus barrel 1 on the expansion joint 2, so that the screw rod 212 cannot move relative to the sleeve 211, and at the moment, the corrugated pipe is in an unstressed state and is also in an initial state corresponding to the bus barrel which is not expanded with heat and contracted with cold; when the GIS bus contracts, the corrugated pipe 22 is stretched, the screw 212 moves backwards relative to the sleeve 211, the moving limit of the screw 212 relative to the sleeve 211 occurs when the large spring 214 or the small spring 215 is looped, and the stretching of the corrugated pipe 22 does not reach the safe stretching limit, so the corrugated pipe 22 cannot be damaged; when the GIS bus is expanded, the bellows 22 is compressed correspondingly, the screw 212 moves forward relative to the sleeve 211, and when the positioning nut 219 and the rear end cap 217 of the sleeve 211 are blocked, the compression of the bellows 22 does not reach its safe compression limit, so that the bellows 22 is not damaged.
The invention also provides a bus expansion joint which has the same structure with the bus expansion joint in the GIS bus and is not described again here.
Claims (10)
1. The bus expansion joint comprises a front flange and a rear flange which are arranged along the axis of a bus, and a corrugated pipe is connected between the front flange and the rear flange, and is characterized by further comprising an elastic assembly connected between the front flange and the rear flange, wherein the elastic assembly comprises a sleeve fixedly connected with the front flange and a force transmission rod fixedly connected with the rear flange, the force transmission rod extends into the sleeve, and a spiral spring is arranged between the part of the force transmission rod extending into the sleeve and the rear end of the sleeve; when the bus expansion joint is butted with the bus cylinder body and the corrugated pipe is not stressed and deformed, the sum of the distances between every two adjacent circles of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe; the rear end of the sleeve is provided with a rear end cover, a positioning nut is arranged on a part of the transmission rod extending out of the sleeve and used for blocking the transmission rod with the rear end cover when the corrugated pipe is compressed to prevent the corrugated pipe from being excessively compressed, the elastic component is arranged before installation, a clamping ring is clamped between the positioning nut and the rear end cover and comprises an arc section attached to the transmission rod and a clamping arm extending out of the arc section and used for clamping the transmission rod, the width of the clamping ring along the length direction of the transmission rod is a designed fixed value which ensures that a spring has fixed elastic force, after the clamping ring is clamped, the elastic component is installed on the corrugated pipe to form a bus expansion joint, then the expansion joint is installed between adjacent bus pipes, during use, firstly, insulating gas is filled into the bus, and after the insulating gas is filled, the clamping ring in the elastic component is removed.
2. The bus bar expansion joint of claim 1, wherein the coil springs comprise large and small springs of different radial dimensions nested together with coinciding axes of rotation.
3. The bus bar expansion joint of claim 2, wherein the large spring and the small spring have opposite hand.
4. The bus bar expansion joint according to claim 2 or 3, wherein the dowel comprises a screw rod and a connecting seat screwed on the screw rod, and the rear side surface of the connecting seat is in abutting fit with the large spring and the small spring.
5. The bus bar expansion joint of claim 4, wherein the screw extends through the connecting seat, and a side of the connecting seat remote from the large spring and the small spring is provided with a counter sink for receiving a nut threaded with the screw.
The GIS bus comprises a bus barrel and a bus telescopic joint, wherein the bus telescopic joint comprises a front flange and a rear flange which are arranged along the axis of the bus, and a corrugated pipe is connected between the front flange and the rear flange; when the corrugated pipe is not deformed under stress, the sum of the distances between every two adjacent turns of the spiral spring is not more than the maximum allowable stretching amount of the corrugated pipe; the rear end of the sleeve is provided with a rear end cover, a positioning nut is arranged on a part of the transmission rod extending out of the sleeve and used for blocking the transmission rod with the rear end cover when the corrugated pipe is compressed to prevent the corrugated pipe from being excessively compressed, the elastic component is arranged before installation, a clamping ring is clamped between the positioning nut and the rear end cover and comprises an arc section attached to the transmission rod and a clamping arm extending out of the arc section and used for clamping the transmission rod, the width of the clamping ring along the length direction of the transmission rod is a designed fixed value which ensures that a spring has fixed elastic force, after the clamping ring is clamped, the elastic component is installed on the corrugated pipe to form a bus expansion joint, then the expansion joint is installed between adjacent bus pipes, during use, firstly, insulating gas is filled into the bus, and after the insulating gas is filled, the clamping ring in the elastic component is removed.
7. The GIS bus of claim 6 wherein the coil springs comprise large and small springs of different radial dimensions nested together with coinciding axes of rotation.
8. The GIS bus of claim 7 wherein the large and small springs are oppositely wound.
9. The GIS bus bar according to claim 7 or 8, wherein the dowel bar comprises a screw rod and a connecting seat screwed on the screw rod, corresponding side surfaces of the connecting seat are in abutting fit with the large spring and the small spring, and a positioning boss for limiting the deformation direction of the small spring is arranged on the connecting seat.
10. The GIS bus of claim 9, wherein the screw penetrates through the connecting seat, and a side of the connecting seat away from the large spring and the small spring is provided with a sinking groove for placing a nut screwed with the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564941.2A CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS bus and bus expansion joint thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811564941.2A CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS bus and bus expansion joint thereof |
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| CN109755908A CN109755908A (en) | 2019-05-14 |
| CN109755908B true CN109755908B (en) | 2021-05-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811564941.2A Active CN109755908B (en) | 2018-12-20 | 2018-12-20 | GIS bus and bus expansion joint thereof |
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| CN (1) | CN109755908B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114619379A (en) * | 2020-12-11 | 2022-06-14 | 河南平高电气股份有限公司 | Telescopic joint adjusting tool and flange chuck thereof |
| CN112600081B (en) * | 2020-12-11 | 2021-08-31 | 中南大学 | Telescopic tube bus for transformer substation |
Family Cites Families (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 |
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