CN201260060Y - Telescopic joint for gas insulation transmission line - Google Patents
Telescopic joint for gas insulation transmission line Download PDFInfo
- Publication number
- CN201260060Y CN201260060Y CNU2008201508957U CN200820150895U CN201260060Y CN 201260060 Y CN201260060 Y CN 201260060Y CN U2008201508957 U CNU2008201508957 U CN U2008201508957U CN 200820150895 U CN200820150895 U CN 200820150895U CN 201260060 Y CN201260060 Y CN 201260060Y
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- Prior art keywords
- sleeve
- expansion joint
- flange
- inner sleeve
- sliding screw
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Abstract
The utility model provides a gas insulation transmission line expansion joint, which is used for connecting two gaseous pipeline units of the gas insulation transmission line; the expansion joint comprises an inner sleeve, an outer sleeve, a sliding screw rod and a fastening component; wherein, the inner sleeve is nested into the outer sleeve and is partly overlapped with the outer sleeve; the sliding screw rod is connected with the inner sleeve and the outer sleeve; the inner sleeve and the outer sleeve are fixedly arranged at the both ends of the sliding screw rod through the fastening component; the fastening component which is used for fixing the sleeve can be loosened; the sleeve can slide along the sliding screw rod relative to the other sleeve; and the inner sleeve and the outer sleeve are both connected with the gaseous pipeline unit. The expansion joint can replace of the transitional corrugated pipe expansion joint, and solve the problems that the corrugated pipe with high pressure resistance and big inside diameter is difficultly manufactured.
Description
Technical field
The utility model relates to the device field of gas-insulated transmission line, relates in particular to a kind of expansion joint of gas-insulated transmission line.
Background technology
Gas-insulated transmission line (GIL:gas-insulated transmission line) is a kind of high voltage, high current power transmission equipment that adopts insulating gas insulation, shell and conductor coaxial arrangement.The characteristic of gas-insulated transmission line is similar to overhead transmission line, the problem that naked is aging, and loss is low, and safety is good, and the occupation of land space is little, has advantage aspect the big capacity long distance powedr transmission.Because GIL is the pipe sealing structure, can adopt directly buried installation, open air to set up with the tunnel usually and install.Therefore for different natural environments, it is very flexible that the installation of GIL seems.Compare with overhead wire with cable, the conductor of GIL and shell interfaces are long-pending big, and resistance is little, thereby loss is obviously little relatively.In addition, the electric capacity of GIL is littler than cable, even long distance powedr transmission also need not reactive power compensation and cooling system, operating cost reduces greatly, and economical construction length can reach more than the 100km.Because the GIL pipe-line is longer, must consider expanding with heat and contract with cold of pipeline that different factors cause.General per 100～120 meters as an inflation unit, between inflation unit and the inflation unit expansion joint is set and is connected.Traditional expansion joint all is to adopt corrugated stainless steel tubing as expansion joint.
Because the making requirement of different GIL, the insulating gas pressure of the GIL of making can be different, and the internal diameter of GIL pipeline is also different.Along with the increase of pouring GIL pipe-line wrapping gas pressure, increasing of GIL internal diameter of the pipeline is thick, also continues to increase as the manufacture difficulty of the corrugated stainless steel tubing of expansion joint, and cost of manufacture also can correspondingly increase substantially.
The utility model content
The purpose of this utility model is to provide a kind of expansion joint of gas-insulated transmission line, with the problem of the making difficulty that increases the expansion joint corrugated stainless steel tubing that slightly causes of the increase that solves GIL pipe-line wrapping gas pressure and internal diameter of the pipeline.
For achieving the above object, the expansion joint of gas-insulated transmission line of the present utility model, this expansion joint are used to connect two gas ducting unit of described gas-insulated transmission line.This expansion joint comprises inner sleeve, outer sleeve, sliding screw and securing member; Inner sleeve is inserted in outer sleeve, partly overlaps with outer sleeve; Sliding screw connects inner sleeve and outer sleeve, by securing member inner sleeve and outer sleeve is fixed in the sliding screw two ends; Unscrew the securing member of fixing a sleeve, this sleeve can be along sliding screw another sleeve slip relatively; Inner sleeve all is connected with a gas ducting unit with outer sleeve.
Further, body and from the extended inner flange of interior body in inner sleeve comprises, outer sleeve comprise outer body portion and from the extended outward flange of outer body portion.Interior body is inserted in outer body portion, and portion partly overlaps with outer body.
Further, the madial wall of the outer body portion that overlaps with interior body has groove, described groove built-in ring.The inboard of the outer body portion that overlaps with interior body has two grooves, and these two grooves are rectangular recess, and the sealing ring of rectangular recess dress is " O " shape sealing ring.
Further, also be with a corrugated protective sleeve on the outer wall of interior body and outer body portion.
Further, all have flange hole on outward flange and the inner flange, the flange hole that sliding screw passes described outward flange and inner flange is connected inner sleeve and outer sleeve; Securing member is installed on the sliding screw of outward flange and inner flange both sides.
Further, inner sleeve is connected with the gas ducting unit by a counter flange, and inner sleeve is connected with this counter flange by fixture.The sealed groove that has a rectangle on the wall that contacts of this counter flange and inner sleeve is equipped with " O " shape sealing ring in the sealing groove.Related fixture comprises bolt, nut, spring washer and plain washer.
Further, the related securing member of the utility model comprises nut, plain washer and spring washer.
Compare with the expansion joint bellows of traditional gas-insulated transmission line, the expansion joint of gas-insulated transmission line of the present utility model utilizes the slide relative of inner sleeve and outer sleeve to satisfy expanding with heat and contract with cold of gas-insulated transmission line by inner sleeve and the outer sleeve that employing is nested, and realizes that air-tightness connects between the inflation unit.The expansion joint of gas-insulated transmission line of the present invention be easy to make and cost low, can solve high pressure resistant, the problem that the bellows that internal diameter is big is difficult to make.
Description of drawings
Below in conjunction with the drawings and specific embodiments the expansion joint of gas-insulated transmission line of the present utility model is made further specific description in detail.
Fig. 1 is an expansion joint front elevational schematic of the present utility model.
Fig. 2 is along BB ' expansion joint revolved section schematic diagram shown in Figure 1.
Embodiment
See also the expansion joint front view of gas-insulated transmission line of the present utility model shown in Figure 1.Revolved sectional view along expansion joint BB ' direction shown in Figure 1 sees also Fig. 2.This expansion joint is used to connect two gas ducting unit of gas-insulated transmission line.As shown in Figure 2, expansion joint comprises inner sleeve 3, outer sleeve 6, sliding screw 9 and securing member 7.Inner sleeve 3 is inserted in outer sleeve 6, overlaps with outer sleeve 6 parts; Sliding screw 9 connects inner sleeve 3 and outer sleeve 6, by securing member 7 inner sleeve 3 and outer sleeve 6 is fixed in sliding screw 9 two ends.Inner sleeve 3 is connected with a gas ducting unit respectively with outer sleeve 6.
Body 31 and from the extended inner flange 32 of interior body in inner sleeve 3 comprises, outer sleeve 6 comprise outer body portion 61 and from the extended outward flange 62 of outer body portion.Interior body 31 is inserted in outer body portion 61, with outer body portion 61 parts overlapping.The madial wall of the outer body portion 61 that overlaps with interior body 31 has groove, groove built-in ring 4.The inboard of the outer body portion 61 that overlaps with interior body 31 in the present embodiment has two grooves.Preferably, these two grooves are rectangular recess, and the sealing ring 4 of rectangular recess dress is " O " shape sealing ring.Should " O " shape sealing ring be the ethylene-propylene diene copolymer material, the good and long service life of air-tightness." O " shape sealing ring in rectangular recess and the rectangular recess can effectively improve the air-tightness between inner sleeve 3 and the outer sleeve 6.Also be with a corrugated protective sleeve 5 on the outer wall of interior body 31 and outer body portion 61.The rubber that this corrugated protective sleeve 5 is made for neoprene, effectively body 31 and outer body portion 61 are not encroached on by external environment in the protection.
All have flange hole 10 on outward flange 62 and the inner flange 32, the flange hole 10 that sliding screw 9 passes outward flange 62 and inner flange 32 is connected inner sleeve 3 and outer sleeve 6; Securing member 7 is installed on the sliding screw 9 of outward flange 62 and inner flange 62 both sides.Related securing member 7 comprises nut, plain washer and spring washer.Concrete, securing member comprises six nuts, two spring washers and four plain washers.On the sliding screw 9 in the outward flange 62 and inner flange 32 outsides two nuts, a spring washer and a plain washer are installed successively as shown in Figure 2, are avoided the utility model expansion joint influenced by radial load; On the sliding screw 9 of outward flange 62 and inner flange 32 inboards a nut and plain washer are installed successively.
As shown in Figure 2, inner sleeve shown in 3 is connected with the gas ducting unit of gas-insulated transmission line by counter flange 1.Inner sleeve 3 is connected by fixture 8 with counter flange 1.Fixture 8 comprises a bolt, two nuts, spring washer and two plain washers.Bolt passes another flange hole 11 of inner flange 32 and the flange hole of counter flange 1, and a plain washer, spring washer and a nut are installed on the bolt of counter flange 1 one ends successively, and the bolt of inner flange 32 1 ends is installed a plain washer and nut successively.Counter flange 1 and contacting of inner sleeve 3 has a rectangle on the wall sealed groove 2 are equipped with " O " shape sealing ring in the sealing groove 2." O " shape sealing ring in sealing groove 2 and the groove 2 is in order to improve the air-tightness between counter flange 1 and the inner sleeve 3.
The expansion joint of gas-insulated transmission line of the present utility model needs with securing member 7 inner sleeve 3 and outer sleeve 6 to be fixed on the sliding screw 9 when not being connected with the gas ducting unit, avoids inner sleeve and outer sleeve generation slide relative.If unclamp the fixedly securing member of inner sleeve 3, fixed jacket tube 6, inner sleeve 3 can be along sliding on the sliding screw 9 relative outer sleeves 6; If unclamp the securing member of fixed jacket tube 6, fixedly inner sleeve 3, and outer sleeve 6 can slide along sliding screw 9 relative inner sleeves 3.
In the present embodiment, inner sleeve 3 is connected with the gas ducting unit by counter flange 1, is the securing member of fixed jacket tube 6 when reality is used, and unscrews the securing member of inner sleeve 3, makes inner sleeve 3 slide along the relative outer sleeve 6 of sliding screw.Inner sleeve 3 and outer sleeve 6 all are to adopt stainless steel material to make.
Expansion joint of the present utility model is after connecting two gas ducting unit, and when the inflation unit heat expansion, slide in opposition will take place the relative outer sleeve of inner sleeve; When two inflation unit shrinkages, dorsal glide will take place in the relative outer sleeve of inner sleeve.The expansion joint of gas-insulated transmission line of the present utility model can realize between the inflation unit that air-tightness connects, be easy to make and cost low, can solve high pressure resistant, the problem that the bellows that internal diameter is big is difficult to make.
Claims (10)
1, a kind of expansion joint of gas-insulated transmission line, described expansion joint are used to connect two gas ducting unit of described gas-insulated transmission line, it is characterized in that described expansion joint comprises inner sleeve, outer sleeve, sliding screw and securing member; Described inner sleeve is inserted in described outer sleeve, partly overlaps with outer sleeve; Described sliding screw connects inner sleeve and outer sleeve, by securing member inner sleeve and outer sleeve is fixed in the sliding screw two ends; Unscrew the securing member of fixing a sleeve, this sleeve can be along sliding screw another sleeve slip relatively; Described inner sleeve all is connected with a gas ducting unit with outer sleeve.
2, expansion joint as claimed in claim 1 is characterized in that, in described inner sleeve comprises body and in described the extended inner flange of body, described outer sleeve comprises outer body portion and from the extended outward flange of described outer body portion.
3, expansion joint as claimed in claim 2 is characterized in that, described interior body is inserted in outer body portion, and portion partly overlaps with outer body.
4, expansion joint as claimed in claim 3 is characterized in that, the madial wall of the outer body portion that described and interior body overlaps has groove, described groove built-in ring.
5, expansion joint as claimed in claim 4 is characterized in that, the inboard of the outer body portion that described and interior body overlaps has two grooves, and described two grooves are rectangular recess, and the sealing ring of described rectangular recess dress is " O " shape sealing ring.
6, as the expansion joint of gas-insulated transmission line as described in the claim 2, it is characterized in that, also be with a corrugated protective sleeve on the outer wall of body and outer body portion in described.
7, expansion joint as claimed in claim 2 is characterized in that, all has flange hole on described outward flange and the inner flange, and the flange hole that described sliding screw passes described outward flange and inner flange is connected inner sleeve and outer sleeve; Described securing member is installed on the sliding screw of outward flange and inner flange both sides.
8, expansion joint as claimed in claim 1 is characterized in that, described inner sleeve is connected with the gas ducting unit by a counter flange, and described inner sleeve is connected with described counter flange by fixture.
9, expansion joint as claimed in claim 8 is characterized in that, the sealed groove that has a rectangle on the wall that contacts of described counter flange and inner sleeve is equipped with " O " shape sealing ring in the described sealed groove; Described fixture comprises bolt, nut, spring washer and plain washer.
10, the expansion joint of gas-insulated transmission line according to claim 1 is characterized in that described securing member comprises nut, plain washer and spring washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201508957U CN201260060Y (en) | 2008-07-16 | 2008-07-16 | Telescopic joint for gas insulation transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201508957U CN201260060Y (en) | 2008-07-16 | 2008-07-16 | Telescopic joint for gas insulation transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201260060Y true CN201260060Y (en) | 2009-06-17 |
Family
ID=40774297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201508957U Expired - Fee Related CN201260060Y (en) | 2008-07-16 | 2008-07-16 | Telescopic joint for gas insulation transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201260060Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339811A (en) * | 2011-02-14 | 2013-10-02 | 西门子公司 | Extendable-length encapsulating housing arrangement for an encapsulated electrical energy transmission device |
| CN108832525A (en) * | 2018-07-02 | 2018-11-16 | 河南森源电气股份有限公司 | The detachable unit and inflatable power transmitting device of inflatable power transmitting device |
| CN109560522A (en) * | 2018-11-30 | 2019-04-02 | 平顶山学院 | Gas-insulated transmission line and cylinder releasable connection structure |
| CN109570785A (en) * | 2017-09-28 | 2019-04-05 | 武汉中谷联创光电科技股份有限公司 | A kind of flexible sealing device of the cutting head of laser cutting machine |
| CN110441646A (en) * | 2019-08-23 | 2019-11-12 | 江苏省送变电有限公司 | A kind of GIL conducting rod connection evaluation system and method based on resistive potential difference ratio |
-
2008
- 2008-07-16 CN CNU2008201508957U patent/CN201260060Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103339811A (en) * | 2011-02-14 | 2013-10-02 | 西门子公司 | Extendable-length encapsulating housing arrangement for an encapsulated electrical energy transmission device |
| US9197046B2 (en) | 2011-02-14 | 2015-11-24 | Siemens Aktiengesellschaft | Extendable-length encapsulating housing arrangement for an encapsulated electrical energy transmission device |
| CN103339811B (en) * | 2011-02-14 | 2017-03-08 | 西门子公司 | Adjustable length closing casing device for the transmission facility of closing |
| CN109570785A (en) * | 2017-09-28 | 2019-04-05 | 武汉中谷联创光电科技股份有限公司 | A kind of flexible sealing device of the cutting head of laser cutting machine |
| CN108832525A (en) * | 2018-07-02 | 2018-11-16 | 河南森源电气股份有限公司 | The detachable unit and inflatable power transmitting device of inflatable power transmitting device |
| CN108832525B (en) * | 2018-07-02 | 2024-01-19 | 河南森源电气股份有限公司 | Detachable unit of inflatable power transmission device and inflatable power transmission device |
| CN109560522A (en) * | 2018-11-30 | 2019-04-02 | 平顶山学院 | Gas-insulated transmission line and cylinder releasable connection structure |
| CN110441646A (en) * | 2019-08-23 | 2019-11-12 | 江苏省送变电有限公司 | A kind of GIL conducting rod connection evaluation system and method based on resistive potential difference ratio |
| CN110441646B (en) * | 2019-08-23 | 2021-05-18 | 江苏省送变电有限公司 | GIL conducting rod connection evaluation system and method based on resistive potential difference ratio |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20120716 |