CN103594980A - Device and method for replacing big flange of high-voltage cable GIS terminal - Google Patents
Device and method for replacing big flange of high-voltage cable GIS terminal Download PDFInfo
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- CN103594980A CN103594980A CN201310530044.0A CN201310530044A CN103594980A CN 103594980 A CN103594980 A CN 103594980A CN 201310530044 A CN201310530044 A CN 201310530044A CN 103594980 A CN103594980 A CN 103594980A
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- large flange
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Abstract
A device for replacing a big flange of a high-voltage cable GIS terminal is formed by a terminal sleeve support device and a big split-type flange. The terminal sleeve support device includes a small flange support top plate (1), fixing nuts (2), threaded rods (3), adjusting nuts (4), a support leg connecting plate (5), support tubes (6) and cup-shaped machine feet (7), wherein the small flange support top plate (1) is provided with holes; the bottom surface of the small flange support top plate (1) is provided with the fixing nuts (2), the threaded rods (3) are arranged in the fixing nuts (2) in a screwed mode, and the adjusting nuts (4) are further arranged in the threaded rods (3); the lower ends of the threaded rods (3) penetrate through corresponding through holes formed in the support leg connecting plate (5) and extend into the corresponding support tubes (6) fixed on the bottom surface of the support leg connecting plate (5); the lower ends of the support tubes (6) are fixedly provided with the cup-shaped machine feet (7). The big split-type flange is composed of two semi-ring-shaped half flanges, and the junction surfaces between the two half flanges are symmetrically connected through connecting pieces. The big flange of the high-voltage cable GIS terminal can be easily replaced through the device, the number of related equipment units is small, and required time is short. Besides, because the device and attachments can be immediately put into operation again without being demounted or mounted and without going through a series of testing, time and cost are saved.
Description
Technical field
The present invention relates to the more changing device of the large flange of a kind of high-tension cable GIS terminal.The invention still further relates to and use described device to carry out the method that the large flange of high-tension cable GIS terminal is changed.
Background technology
High-tension cable GIS terminal is positioned at GIS terminal bottom, syndeton between cable termination epoxy bushing and GIS base is: cable termination epoxy bushing is provided with two-stage ring-shaped step, be positioned on little ring-shaped step below and have screwed hole, form the little flange that cable termination is fixed; Ring-shaped step is above connected with bottom, GIS gas storehouse through screw outside GIS gas storehouse by the large flange of high-tension cable GIS terminal, its Main Function is that cable termination is fixed, make to press closure between cable termination epoxy bushing and GIS base, form good air-tightness, prevent gas leakage in GIS gas storehouse.Therefore the large flange of GIS terminal plays fixing and supports sealing function, but because the general large flange of GIS terminal is made of aluminum, mechanical strength is not fine all the time, so long-play is easily because a variety of causes such as stressed and metal fatigue crack.If the crackle forming continuous development of flange, will form cracking, just now flange does not have the effect of supporting sealing, cause insulating gas to leak.In practical operating experiences, have been found that the case of crackle appears in several the large flanges of GIS terminal.So when crackle appears in the large flange of GIS terminal, will change in time, prevent that defect from further expanding.
Traditional replacing method need to have a power failure and carry out in conjunction with cable line.First bled in GIS gas storehouse, then opening GIS gas storehouse unloads whole cable termination outside GIS gas storehouse, and remove after epoxy bushing (if fill insulating oil in epoxy bushing, also will first to its processings of draining the oil before dismounting), just large flange extraction can be changed.Changed after large flange, need reinstall epoxy bushing (oil-filled terminal also needs filling new insulating oil in epoxy bushing), again GIS terminal has been reinstalled in GIS gas storehouse, can be restored to normal operating condition after finally GIS gas storehouse being filled with to insulating gas.
Also be that prior art exists technical problem to be:
The first, because needs have a power failure to circuit, if the scheduled outage time is more long-range, may cause defect to worsen, or when circuit is important guarantor's electric line, power failure may cause load loss, reduce power supply reliability;
The second, exchonge step is more loaded down with trivial details, and the equipment unit relating to is more, and replacing takes longer;
The 3rd, because equipment and annex are through dismounting, need to carry out could again put into operation after series of experiments after returning to normal operating condition, expend too much time and money.
Summary of the invention
First technical problem to be solved by this invention, is just to provide the more changing device of the large flange of a kind of high-tension cable GIS terminal.
Second technical problem to be solved by this invention, is just to provide a kind of replacing method of using described device to carry out the large flange of high-tension cable GIS terminal.
Adopt apparatus and method of the present invention, change the large flange of high-tension cable GIS terminal simple, the equipment unit relating to seldom, take short; And because equipment and annex are without dismounting, can again put into operation, without carrying out, series of experiments is saved time and cost at once.
Solve above-mentioned first technical problem, the technical solution used in the present invention is as follows:
The more changing device of the large flange of a kind of high-tension cable GIS terminal, it is characterized in that: by pot head bracing or strutting arrangement and the large flange of dissection type, formed, the composition structure of pot head bracing or strutting arrangement is: one supports little flange top board 1, corresponding to the size of high-tension cable GIS terminal, which is provided with the perforate corresponding to high-tension cable GIS terminal bolt head; The bottom surface of supporting little flange top board is fixed with at least 3 hold-down nuts 2, is screwed with screw rod 3 in hold-down nut; In screw rod, be also provided with adjusting nut 4, the lower end of screw rod through the corresponding through hole having on a feet connecting plate 5, put in stay pipe 6 corresponding and that be fixed on feet connecting plate bottom surface, the lower end of support column is fixed with pin cup 7; The large flange of dissection type consists of two Semicircular half flanges, corresponding to the large flange of high-tension cable GIS terminal, on the faying face of half flange, with connector is symmetrical, connects.
Described large flange refers to symmetrical connection of connector on the faying face of half flange: on the faying face of half flange, have the screwed hole of vertical faying face, have connection shoulder hole on the faying face of second half flange, connector is screwed into screwed hole through shoulder hole two halves flange is connected to integral body.
Described two halves formula flange adopts brass material to make.
The large flange of described dissection type has 2 stacks and uses, and 90 degree are diverged to in screw junction.
Solve above-mentioned second technical problem, the technical solution used in the present invention is as follows:
Described device carries out a replacing method for the large flange of high-tension cable GIS terminal, comprises the following steps:
S1 installs pot head bracing or strutting arrangement, regulates adjusting nut to make to support little flange roof plate supporting under high-tension cable GIS terminal, and terminal is supported, and replaces former large flange to support sealing to terminal;
S2 all unclamps former large flange screw, unloads large flange;
S3 puts terminal by two two halves formula flanges, and be combined into a large flange of circle with connecting screw is fastening, again another two two halves formula flanges are put to terminal, with connecting screw is fastening, be combined into a large flange of circle, note making screw junction diverge to 90 degree, the large flange of newly changing is fastened on GIS bin, now need requires holding screw in strict accordance with moment;
S4 recovers to support after sealing function when newly changing large flange again, unclamps and removes pot head bracing or strutting arrangement;
S5 is finally by the sawed-off taking-up of former flange, and cable line just can be restored to normal operating condition.
The effect of pot head bracing or strutting arrangement is to support the little flange in GIS terminal bottom by supporting little flange top board 1, pin cup 7 contacts with bearing-surface, regulate adjusting nut 4 that screw rod 3 is stretched to and can support live terminal, replace large flange to realize fixed terminal, guarantee the effect that GIS storehouse seals.
Two halves formula flange is to be combined into a complete large flange by two semicircle flanges, between two semicircle flanges, by connecting screw, be fastenedly connected, because this type of flange is only formed by connecting by two screws, screw place is stressed weak spot, therefore on the basis of this flange, also need to add a two halves formula Ifold flange, and 90 degree are diverged to in screw junction, jointly stressed by two flanges, increase its stability under loading, in addition, in order to guarantee its mechanical strength, prevent the appearance again of crackle, two halves formula flange generally adopts brass material to make.
The invention has the beneficial effects as follows:
1, substitute mode is efficient and convenient, and Work tool and the equipment of use are simple, and related parts are less, and replacing takes shorter;
2, the running status that does not change equipment due to Renewal process, electric property is saved from damage, therefore without carrying out electrical test, has saved many man power and materials;
3, the structure of two halves formula flange makes to change convenient and swift in the future.
Accompanying drawing explanation
Fig. 1 is the syndeton schematic diagram between existing cable termination epoxy bushing and GIS base;
Fig. 2 is more changing device-pot head bracing or strutting arrangement cross-sectional schematic of the large flange of high-tension cable GIS terminal of the present invention;
Fig. 3 is the large flange schematic diagram of the more changing device-dissection type of the large flange of high-tension cable GIS terminal of the present invention.
Below in conjunction with drawings and Examples, the present invention is further described.
Embodiment
As shown in Figure 1, cable termination epoxy bushing is provided with two-stage ring-shaped step to syndeton between existing cable termination epoxy bushing and GIS base, is positioned on little ring-shaped step below and has screwed hole, forms the little flange that cable termination is fixed; Ring-shaped step is above connected with bottom, GIS gas storehouse through screw outside GIS gas storehouse by the large flange of high-tension cable GIS terminal (indicating diameter 320 places).
Figure 2 shows that the more pot head bracing or strutting arrangement of changing device of the large flange of high-tension cable GIS terminal of the present invention, comprise the little flange top board 1 of a support, size corresponding to high-tension cable GIS terminal, which is provided with the perforate corresponding to high-tension cable GIS terminal bolt head, during use, can allow high-tension cable GIS terminal bolt head sink in perforate, in the time of can preventing jack-up, slide; The bottom surface of supporting little flange top board is fixed with 4 hold-down nuts 2, is screwed with screw rod 3 in hold-down nut, conveniently unloads screw rod; In screw rod, be also provided with adjusting nut 4, the lower end of screw rod through the corresponding through hole having on a feet connecting plate 5, put in stay pipe 6 corresponding and that be fixed on feet connecting plate bottom surface, the lower end of support column is fixed with pin cup 7.
Figure 3 shows that the larger flange of dissection type of changing device of the large flange of high-tension cable GIS terminal of the present invention, by two Semicircular half flanges, formed, corresponding to the large flange of high-tension cable GIS terminal, on the faying face of half flange, with connector is symmetrical, connect, specifically: on the faying face of half flange, have the screwed hole of vertical faying face, have connection shoulder hole on the faying face of second half flange, connector is screwed into screwed hole through shoulder hole two halves flange is connected to integral body, and two halves formula flange adopts brass material to make.
The large flange of dissection type can also be used in 2 stacks, and 90 degree are diverged to in screw junction.
Use described device to carry out the replacing method of the large flange of high-tension cable GIS terminal, comprise the following steps:
S1 installs pot head bracing or strutting arrangement, regulates adjusting nut to make to support little flange roof plate supporting under high-tension cable GIS terminal, and terminal is supported, and replaces former large flange to support sealing to terminal;
S2 all unclamps former large flange screw, unloads large flange;
S3 puts terminal by two two halves formula flanges, and be combined into a large flange of circle with connecting screw is fastening, again another two two halves formula flanges are put to terminal, with connecting screw is fastening, be combined into a large flange of circle, note making screw junction diverge to 90 degree, the large flange of newly changing is fastened on GIS bin, now need requires holding screw in strict accordance with moment;
S4 recovers to support after sealing function when newly changing large flange again, unclamps and removes pot head bracing or strutting arrangement;
S5 is finally by the sawed-off taking-up of former flange, and cable line just can be restored to normal operating condition.
Claims (5)
1. the more changing device of the large flange of high-tension cable GIS terminal, it is characterized in that: by pot head bracing or strutting arrangement and the large flange of dissection type, formed, the composition structure of pot head bracing or strutting arrangement is: one supports little flange top board (1), size corresponding to high-tension cable GIS terminal, which is provided with the perforate corresponding to high-tension cable GIS terminal bolt head, the bottom surface of supporting little flange top board is fixed with at least 3 hold-down nuts (2), in hold-down nut, be screwed with screw rod (3), in screw rod, be also provided with adjusting nut (4), the lower end of screw rod is through the corresponding through hole having on a feet connecting plate (5), put in correspondence and be fixed in the stay pipe (6) of feet connecting plate bottom surface, the lower end of support column is fixed with pin cup (7), the large flange of dissection type consists of two Semicircular half flanges, corresponding to the large flange of high-tension cable GIS terminal, on the faying face of half flange, with connector is symmetrical, connects.
2. the more changing device of the large flange of high-tension cable GIS terminal according to claim 1, it is characterized in that: described large flange refers to symmetrical connection of connector on the faying face of half flange: on the faying face of half flange, have the screwed hole of vertical faying face, have connection shoulder hole on the faying face of second half flange, connector is screwed into screwed hole through shoulder hole two halves flange is connected to integral body.
3. the more changing device of the large flange of high-tension cable GIS terminal according to claim 1 and 2, is characterized in that: described two halves formula flange adopts brass material to make.
4. the more changing device of the large flange of high-tension cable GIS terminal according to claim 3, is characterized in that: the large flange of described dissection type has 2 stacks and uses, and 90 degree are diverged to in screw junction.
5. any one device of employing as described in claim 1-4 carries out the method that the large flange of high-tension cable GIS terminal is changed, and comprises the following steps:
S1 installs pot head bracing or strutting arrangement, regulates adjusting nut to make to support little flange roof plate supporting under high-tension cable GIS terminal, and terminal is supported, and replaces former large flange to support sealing to terminal;
S2 all unclamps former large flange screw, unloads large flange;
S3 puts terminal by two two halves formula flanges, and be combined into a large flange of circle with connecting screw is fastening, again another two two halves formula flanges are put to terminal, with connecting screw is fastening, be combined into a large flange of circle, note making screw junction diverge to 90 degree, the large flange of newly changing is fastened on GIS bin, now need requires holding screw in strict accordance with moment;
S4 recovers to support after sealing function when newly changing large flange again, unclamps and removes pot head bracing or strutting arrangement;
S5 is finally by the sawed-off taking-up of former flange, and cable line just can be restored to normal operating condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530044.0A CN103594980B (en) | 2013-10-30 | 2013-10-30 | The replacing options of big flange of high-voltage cable GIS terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310530044.0A CN103594980B (en) | 2013-10-30 | 2013-10-30 | The replacing options of big flange of high-voltage cable GIS terminal |
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| CN103594980A true CN103594980A (en) | 2014-02-19 |
| CN103594980B CN103594980B (en) | 2016-06-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310530044.0A Active CN103594980B (en) | 2013-10-30 | 2013-10-30 | The replacing options of big flange of high-voltage cable GIS terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680387A (en) * | 2016-04-08 | 2016-06-15 | 烟台三新新能源科技有限公司 | Line protective device of building site |
| CN113437618A (en) * | 2021-06-07 | 2021-09-24 | 武汉中车长客轨道车辆有限公司 | High-efficient separated time isolating device of cable |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008245343A (en) * | 2007-03-23 | 2008-10-09 | Sumitomo Electric Ind Ltd | Supporting tool for superconducting cable |
| CN201256267Y (en) * | 2008-07-26 | 2009-06-10 | 徐广杰 | Special rack for cable head manufacturing |
| CN201804637U (en) * | 2010-10-11 | 2011-04-20 | 唐苑雯 | Half-flange base of pillar insulator |
| CN202763337U (en) * | 2012-08-16 | 2013-03-06 | 扬州派斯特换热设备有限公司 | Flange connecting pipe height marking tool |
| CN203522046U (en) * | 2013-10-30 | 2014-04-02 | 广东电网公司东莞供电局 | Replacing apparatus for high-voltage cable GIS terminal large flange |
-
2013
- 2013-10-30 CN CN201310530044.0A patent/CN103594980B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008245343A (en) * | 2007-03-23 | 2008-10-09 | Sumitomo Electric Ind Ltd | Supporting tool for superconducting cable |
| CN201256267Y (en) * | 2008-07-26 | 2009-06-10 | 徐广杰 | Special rack for cable head manufacturing |
| CN201804637U (en) * | 2010-10-11 | 2011-04-20 | 唐苑雯 | Half-flange base of pillar insulator |
| CN202763337U (en) * | 2012-08-16 | 2013-03-06 | 扬州派斯特换热设备有限公司 | Flange connecting pipe height marking tool |
| CN203522046U (en) * | 2013-10-30 | 2014-04-02 | 广东电网公司东莞供电局 | Replacing apparatus for high-voltage cable GIS terminal large flange |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105680387A (en) * | 2016-04-08 | 2016-06-15 | 烟台三新新能源科技有限公司 | Line protective device of building site |
| CN113437618A (en) * | 2021-06-07 | 2021-09-24 | 武汉中车长客轨道车辆有限公司 | High-efficient separated time isolating device of cable |
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| Publication number | Publication date |
|---|---|
| CN103594980B (en) | 2016-06-08 |
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