CN108050324A - GIS flange seal components - Google Patents
GIS flange seal components Download PDFInfo
- Publication number
- CN108050324A CN108050324A CN201810068966.7A CN201810068966A CN108050324A CN 108050324 A CN108050324 A CN 108050324A CN 201810068966 A CN201810068966 A CN 201810068966A CN 108050324 A CN108050324 A CN 108050324A
- Authority
- CN
- China
- Prior art keywords
- flange
- gis
- screw thread
- fluid sealant
- external screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
Abstract
The invention discloses a kind of GIS flange seals component, the second flange docked including first flange and with the first flange, the first flange has the external screw thread tube head extended to second flange side, and external screw thread tube head has light pipe segment away from second flange side；The nozzle of second flange then has the internal thread coordinated with the external screw thread tube head；One sealing rubber ring is provided, is sleeved in male-pipe head section of the light pipe segment with exposing internal thread, and fluid sealant chamber is determined by first flange and second flange docking in sealing rubber ring periphery, which is matched with gas vent and hole for injecting glue；It is furnished with the additional seal structure around fluid sealant chamber in the centrifugation side of fluid sealant chamber.GIS flange seals component according to the invention is easy to ensure two flanges compared with high-axiality.
Description
Technical field
The present invention relates to a kind of GIS flange seals component, GIS is the abbreviation of GAS insulated SWITCHGEAR,
I.e. gas-insulating and fully-enclosed combined electrical apparatus, also known as SF6Fully closed combined electric unit.
Background technology
With greatly developing for State Grid's cause, SF6The utilization of fully closed combined electric unit also obtains swift and violent development,
SF6Gas is widely used in its excellent insulation performance and arc extinction performance in electrical equipment, is transported in GIS high-tension switch gears
During row, if waterproof construction is dealt with improperly, waterproof homework is not perfect, easily causes the water inlet of GIS flange sealing surfaces, and then generates
Sealing surface caused by corrosion fails, and causes SF6The leakage of gas, so as to cause GIS internal discharge accidents.It not only results in
Substation directly powers off, and also to economic loss huge caused by substation and enterprise, but will be brought to service personnel on body
And the harm on life.
Due to SF6The physical features of gas colorless and odorless, service personnel is difficult to find leakage point, at present mainly emphasis
It is placed on GIS flange seals, by improving the reliability of sealing surface, reduces its failure probability.
Chinese patent literature CN102842863A also indicate that the discovery of GIS flange seal component leak sources it is relatively difficult, it is necessary to
It goes to solve the problems, such as that it is easy to failure from anti-angle, in this regard, its used means is to set gas between a pair of of abutted flange
The O-ring of close property further sets annular marine glue chamber on the interface of two flange of the outside of O-ring, and then, at docking
Periphery set with certain angle waterproof glue groove.Setting for O-ring and annular marine glue chamber, to two methods
Blue concentricity has the high requirement of comparison, however, can be seen that two flanges from its attached drawing is end face docking, often needs
The problem of being attached by the bolt of annular array, being substantially related to two flange centerings, by processing technology sheet
The influence of body, two flanges can all have a mismachining tolerance, and the position between bolt hole also can existence position precision problem, especially
It is to generally require to reserve larger gap between bolt hole and bolt, assembling is difficult to accomplish that two flanges keep higher coaxial
Degree, with this condition, the efficiency of sealing element and sealing structure can be subject to very big influence.
The basic conception of Chinese patent literature CN203445564U is roughly the same with Chinese patent literature CN102842863A,
It is different from place of Chinese patent literature CN102842863A be to provide a V-type cushion rubber in the centripetal side of fluid sealant chamber it is close
Seal structure, and a mortise structure is provided, essentially correspond to labyrinth seal structure.Two flanges are but formed to fix
Connection be still annular array bolt, still can not ensure two stringent centerings of flange, cause sealing structure there may be
The problem of dislocation.In addition, joggle can be used for the initial contraposition between two flanges to a certain extent, so as to relatively high
Assembly precision, but joggle can generate between tenon face groove face gap and end face of flange docking apart from the problem of, can only often ensure one
A structural portion is strictly to just, so as to influence whole sealing performance.
The content of the invention
In view of this, it is an object of the invention to provide one kind to be easy to ensure two flanges compared with high-axiality, close so as to ensure
The GIS flange seal components of sealing and sealing structure efficiency.
Embodiment according to the invention provides a kind of GIS flange seals component, including first flange and with the first flange
The second flange of docking, the first flange have the external screw thread tube head extended to second flange side, and external screw thread tube head deviates from
Second flange side has light pipe segment；
The nozzle of second flange then has the internal thread coordinated with the external screw thread tube head；
One sealing rubber ring is provided, is sleeved in male-pipe head section of the light pipe segment with exposing internal thread, and in sealing rubber ring
Fluid sealant chamber is determined in periphery by first flange and second flange docking, which is matched with gas vent and hole for injecting glue；
It is furnished with the additional seal structure around fluid sealant chamber in the centrifugation side of fluid sealant chamber.
Above-mentioned GIS flange seals component, optionally, sealing rubber ring are cylindrical shape sealing rubber ring；
Annular groove is provided in first flange, sealing rubber ring is included for part.
Optionally, the first connection bump is equipped in first flange side in the periphery of fluid sealant chamber, is equipped in second flange side
Second connection bump；
First connection bump docks to form peripheral /V with the second connection bump.
Optionally, the centripetal side of the first connection bump end forms the protrusion of oriented second flange side protrusion；
Second connection bump is then equipped with positioning groove portion to being located at protrusion, for being embedded in protrusion.
Optionally, it is rounded feature to position groove portion, and corresponding protrusion matching is rounded feature.
Optionally, the length of fit of internal thread and external screw thread tube head detains screw thread not less than 10mm or no less than four, and coordinates
Length is no more than 20mm or no more than six button screws.
Optionally, fluid sealant chamber is variable-diameter structure, and large diameter portion is determined by first flange and second flange, and by second
Flange determines path part.
Optionally, the length of path part is identical with the length of the large diameter portion in second flange.
Optionally, peripheral ring seal knot of the additional seal structure by forming seam after first flange and second flange pairing
Structure.
Optionally, peripheral ring seal structure includes the part of centripetal extension.
Embodiment according to the invention, annular array spiral shell must be used by being different from existing GIS flange seals component connection
The connection mode of bolt, but pipe screw thread connecting wire structure is used, it shows and is threaded on a flange for realizing flanged joint
Connector, and the tap out in the endoporus of another flange, form threaded hole, and the two directly using being threadedly coupled, is threadedly coupled
Relatively high concentricity can be directly realized by, so as to be easy to ensure the efficiency of sealing element and sealing structure.In addition, it is threadedly coupled
Itself primary seal can be formed, it can additional raising sealability.And then set gradually sealing in the periphery of threaded connection
The additional seal structure of rubber ring, injecting glue sealing structure and periphery, whole sealing performance is more preferably.
Description of the drawings
Fig. 1 is that GIS flange seal component masters cut open structure diagram in one embodiment of the invention.
Fig. 2 cuts open structure diagram for first flange master.
Fig. 3 cuts open structure diagram for second flange master.
In figure：1. first flange, 2.SF6Passage, 3. sealing rubber rings, 4. gas vents, 5. glue chambers, 6. waterproof aprons, 7.
Second flange, 8. hole for injecting glue.
11. the first connection bump, 12. positioning convex portions, 13. annular grooves, 14. external screw thread tube heads.
71. internal thread, 72. counterbores, 73. positioning groove portions, 74. second connection bumps.
Specific embodiment
With reference to Figure of description 1, flanged joint is a kind of primary structure of pipe joint structure, point usually given in ring flange
The upper circular array of degree circle shows one group of bolt hole, wears bolt and realizes fastening.The personnel of slightly mechanical knowledge both know about, on ring flange
Bolt hole used is unthreaded hole, and unthreaded hole diameter is more than bolt large diameter, under conditions of meeting bolt and wearing, between bolt and unthreaded hole
There are gaps, can not realize and form positioning by bolt to realize the coaxial assembling between two flanges.In addition, even using row
Row perforate is crept into, can also lead to the problem of the type heart and flange coaxiality of gang drill.
In addition, for ring flange, ideally, it is desirable that the pretightning force of each bolt is identical, however, even
The fastening of each bolt is carried out using torque spanner, can not accomplish that the pretightning force of each bolt is identical, be bolt
Although standard component, the cooperation dynamics of bolts and nuts differs, and thus generating ring flange, pretightning force is different everywhere
Problem causes sealing element deflection, and declines sealing efficiency.
For flange, the pipe fitting connected is substantially pipe part, and therefore, fundamental reference system is the axis of pipe part
Line, thereby generated centripetal centrifugation can be understood by the person skilled in the art.For flanged joint, necessarily include two
The pairing of the ring flange of a flange to be distinguish between, remembers one of flange for first flange 1, another flange is second
Flange 7.
A kind of GIS flange seals component as shown in Fig. 1 ~ 3 is docked including first flange 1 and with the first flange 1
Second flange 7, the two flange are respectively provided with ring flange, but are not that traditional bolt hole by being distributed on ring flange is connected
It connects, but is attached using pipe screw thread.Pipe screw thread herein has a both sides content, first content be first flange 1 with
Threaded connection of the connection structure of second flange 7 between tube body, the second content are then that the screw thread being threadedly coupled is pipe screw thread, so that
Threaded connection has higher sealability in itself.
In fig. 2 as it can be seen that the first flange 1 has the external screw thread tube head 14 extended to 7 side of second flange, compared to
Traditional flange, first flange 1 extends axially outward out one section from its ring flange inner edge, and then outer spiral shell is processed in the section
Line forms foregoing external screw thread tube head 14.
External screw thread tube head 14 also has light pipe segment in the figure, is analogous to the bolt with polished rod, only here, light
Rod segment is mainly used to determine sealing structure.
In figure 3 it can be seen that second flange 7 matched tube body set second flange 7 part be equipped with internal thread 71, should
Internal thread 71 realizes the fastening of first flange 1 and second flange 7 for being screwed with external screw thread tube head 14.
For ring flange, it appears that It is not necessary to which setting is so big after bolted function is lost, but for GIS methods
Orchid, the radial direction needed in docking has larger sealing structure, multi-stage sealed so as to be formed.
Subtracting for peripheral bolt is matched somebody with somebody, and adapted to ring flange can be made relatively small.
In Fig. 1, pipe thread seal forms first order sealing, is denoted as the first sealing structure, when carrying out pipe screw thread connection,
Fluid sealant is coated on external screw thread tube head 14, to improve sealability.
And then sealing rubber ring 3 is covered in the first sealing structure, to form second level sealing, the matched sealing structure of institute
It is denoted as second seals structure.It should be noted that, it is necessary to by 3 sets of sealing rubber ring outside first before the first sealing structure is formed
On screw thread tube head 14.
It is understood that under normal condition, the internal diameter of sealing rubber ring 3 is less than the major diameter of external screw thread tube head 14, the two
After cooperation there is certain pretightning force, preferable sealing effect can be formed.
And then in the periphery of second seals structure be injecting glue sealing structure, it is denoted as the 3rd sealing structure, GIS sealing knots
Structure main seal structure is the 3rd sealing structure.Injecting glue sealing structure needs to be formed the fluid sealant chamber of annular, in Fig. 1 and institute
The prior art literature of reference, by the pairing of profile, forms cavity as it can be seen that by the docking of two flanges, such as glue chamber 5,
Periphery has installed the formation that can be carried out the 3rd sealing structure after additional seal structure additional.
, it is necessary to first make additional seal structure during making, then the assembling of waterproof apron 6 as shown in Figure 1 is noted
Glue cures.
Fluid sealant chamber is matched at least one gas vent 4, and there is usually one hole for injecting glue 8, rubber cement is injected from hole for injecting glue 8,
Gas in situ in fluid sealant intracavitary is discharged from gas vent 4, generally in order to ensure that rubber cement fills fluid sealant chamber, usually in gas vent
Stop injecting glue in given time after 4 discharge rubber cements.
Injecting glue is finished, it is necessary to block stifled gas vent 4 and hole for injecting glue 8 using such as plug, and therefore, gas vent 4 and hole for injecting glue 8 are logical
Often with there is screw thread hole section, to be adapted to plug screw.
In the construction shown in fig. 1, sealing rubber ring 3 is cylindrical shape sealing rubber ring, i.e., it has well-regulated inner cylinder
And outer cylinder, and there is certain thickness, thickness generally takes 2 ~ 3mm.
In fig. 2 as it can be seen that being provided with annular groove 13 in first flange, the internal face of annular groove 13 and the light pipe of external screw thread tube head 14
The outer diameter of section is coplanar, and then, annular groove 13 includes sealing rubber ring 3 for part, with relatively reliable location sealing rubber ring
3。
Referring to Figure of description 2 and 3, the first connection bump 11 is equipped in 1 side of first flange in the periphery of fluid sealant chamber, in
7 side of second flange is equipped with the second connection bump 74, and then, as shown in Figure 1, the first connection bump 11 and the second connection bump 74 are right
It connects to form peripheral /V, so as to form glue chamber 5 as shown in Figure 1.Again to the first connection bump 11 and the second connection bump 74
Injecting glue is carried out after contraposition after fitted seal rubber ring 3.
On the first connection bump 11 and the second connection bump 74, the two docking can form the rigid contact of periphery, shape
Into support, the stress that external screw thread tube head 14 is connected with internal thread 71 can be mitigated.It should be noted that for traditional ring flange
It is bolted, since bolt is dispersed in periphery, the area of connection is bigger, and connection reliability is relatively preferable, and connection is replaced
For the connection of external screw thread tube head 14 and internal thread 71, connection area reduces, and connection reliability can be declined, for this purpose, passing through the
The cooperation of one connection bump 11 and the second connection bump 74 can mitigate problem caused by connection reliability decline.
Further, the centripetal side of 11 end of the first connection bump forms the protrusion of oriented 7 side of second flange protrusion, such as schemes
Positioning convex portion 12 shown in 2.
Correspondingly, the second connection bump 74 is then equipped with positioning groove portion 73 to being located at positioning convex portion 12, for being embedded in convex
Portion 12, not only can the significantly more efficient concentricity ensured between two flanges, but also positioning convex portion 12 is matched somebody with somebody with positioning groove portion 73
Conjunction can form certain labyrinth seal structure, improve sealing performance during injecting glue.
Preferably, it is rounded feature to position groove portion 73, and corresponding positioning convex portion 12 is matched as rounded feature, processing technology phase
To simple, and aligning accuracy is high.
In addition, the structure that internal thread 71 is still new in flanged joint with the assembly relation of external screw thread tube head 14, assembling
Reliability needs are further groped, in this regard, inventor determines that internal thread 71 and the cooperation of external screw thread tube head 14 are grown by experiment
Degree is not preferably less than 10mm or should not be less than four button screw threads, and length of fit is no more than 20mm or no more than six button screws.Cooperation length
Spend short, the reliability of connection is bad, and concentricity is not allowed under the too short assembled condition that can cause two flanges of connection length
Easily ensure, that is, coordinate section shorter, the stronger material of effect of fit clearance, when cooperation section is longer, interference section is elongated, fit clearance
Effect can be weakened.
Meanwhile the length of fit between internal thread 71 and external screw thread tube head 14 is unsuitable long, otherwise can slacken flange and be matched somebody with somebody
Belong to the intensity of tube body.
In the construction shown in fig. 1, fluid sealant chamber, i.e. glue chamber 5 are a kind of variable-diameter structures, and reducing is originally pipe fitting category
In reducing is the abbreviation of reducer union, represents that two tube body calibers that pipe fitting is connected are different.In Fig. 1, by first flange
1 and second flange 7 determine large diameter portion, and path part is determined by second flange 7, this kind of structure can be in second flange 7
Side formed bend pipe effect, and 7 side of second flange then be threadedly coupled structure division, SF6The pressure of passage influences whether first
The side can improve sealability by variable-diameter structure.
Preferably, the length of path part is identical with the length of the large diameter portion in second flange 7, can be in glue chamber
In the case of 5 individuals are smaller, stronger sealability is obtained.
In Fig. 1, peripheral ring seal of the additional seal structure by forming seam after first flange 1 and 7 pairing of second flange
Structure.
Further, peripheral ring seal structure includes the part of centripetal extension, to form certain cavity volume, realize sealing element or
The insertion of person's airtight and watertight padding, to form more preferably sealing effect.
Claims (10)
1. a kind of GIS flange seals component, the second flange docked including first flange and with the first flange, feature exist
In the first flange has the external screw thread tube head extended to second flange side, and external screw thread tube head has away from second flange side
There is light pipe segment；
The nozzle of second flange then has the internal thread coordinated with the external screw thread tube head；
One sealing rubber ring is provided, is sleeved in male-pipe head section of the light pipe segment with exposing internal thread, and in sealing rubber ring
Fluid sealant chamber is determined in periphery by first flange and second flange docking, which is matched with gas vent and hole for injecting glue；
It is furnished with the additional seal structure around fluid sealant chamber in the centrifugation side of fluid sealant chamber.
2. GIS flange seals component according to claim 1, which is characterized in that sealing rubber ring seals rubber for cylindrical shape
Cushion rubber；
Annular groove is provided in first flange, sealing rubber ring is included for part.
3. GIS flange seals component according to claim 2, which is characterized in that in the periphery of fluid sealant chamber in the first method
Blue side is equipped with the first connection bump, and the second connection bump is equipped in second flange side；
First connection bump docks to form peripheral /V with the second connection bump.
4. GIS flange seals component according to claim 3, which is characterized in that the centripetal side of the first connection bump end
Form the protrusion of oriented second flange side protrusion；
Second connection bump is then equipped with positioning groove portion to being located at protrusion, for being embedded in protrusion.
5. GIS flange seals component according to claim 4, which is characterized in that positioning groove portion is rounded feature, accordingly
Protrusion matching is rounded feature.
6. according to any GIS flange seal components of claim 1 ~ 5, which is characterized in that internal thread and external screw thread tube head
Length of fit not less than 10mm or no less than four button screw thread, and length of fit no more than 20mm or no more than six button screws.
7. according to any GIS flange seal components of claim 1 ~ 5, which is characterized in that fluid sealant chamber is variable-diameter structure,
Large diameter portion is determined by first flange and second flange, and path part is determined by second flange.
8. GIS flange seals component according to claim 7, which is characterized in that the length of path part is with being located at second
The length of large diameter portion on flange is identical.
9. according to any GIS flange seal components of claim 1 ~ 5, which is characterized in that additional seal structure is first
Flange and the peripheral ring seal structure that seam is formed after second flange pairing.
10. GIS flange seals component according to claim 9, which is characterized in that peripheral ring seal structure includes centripetal extension
Part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810068966.7A CN108050324B (en) | 2018-01-24 | 2018-01-24 | GIS flange seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810068966.7A CN108050324B (en) | 2018-01-24 | 2018-01-24 | GIS flange seal assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108050324A true CN108050324A (en) | 2018-05-18 |
| CN108050324B CN108050324B (en) | 2023-07-25 |
Family
ID=62124595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810068966.7A Active CN108050324B (en) | 2018-01-24 | 2018-01-24 | GIS flange seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108050324B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3152172U (en) * | 2009-05-08 | 2009-07-23 | ノーラエンジニアリング株式会社 | Flange fitting |
| CN201348107Y (en) * | 2009-01-21 | 2009-11-18 | 杜海成 | Dismountable flanged joint of major diameter pipe line |
| CN102842863A (en) * | 2012-09-26 | 2012-12-26 | 中电装备恩翼帕瓦（山东）高压开关有限公司 | GIS (Gas Insulated Switchgear) flange sealing assembly and method for injecting waterproof glue for assembly |
| CN203445564U (en) * | 2013-08-30 | 2014-02-19 | 国家电网公司 | GIS tube bus housing flange sealing structure |
| CN104455834A (en) * | 2014-12-25 | 2015-03-25 | 常州商瑞服饰有限公司 | Flange connection device |
| CN207814707U (en) * | 2018-01-24 | 2018-09-04 | 济南大学 | GIS flange seal components |
-
2018
- 2018-01-24 CN CN201810068966.7A patent/CN108050324B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201348107Y (en) * | 2009-01-21 | 2009-11-18 | 杜海成 | Dismountable flanged joint of major diameter pipe line |
| JP3152172U (en) * | 2009-05-08 | 2009-07-23 | ノーラエンジニアリング株式会社 | Flange fitting |
| CN102842863A (en) * | 2012-09-26 | 2012-12-26 | 中电装备恩翼帕瓦（山东）高压开关有限公司 | GIS (Gas Insulated Switchgear) flange sealing assembly and method for injecting waterproof glue for assembly |
| CN203445564U (en) * | 2013-08-30 | 2014-02-19 | 国家电网公司 | GIS tube bus housing flange sealing structure |
| CN104455834A (en) * | 2014-12-25 | 2015-03-25 | 常州商瑞服饰有限公司 | Flange connection device |
| CN207814707U (en) * | 2018-01-24 | 2018-09-04 | 济南大学 | GIS flange seal components |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108050324B (en) | 2023-07-25 |
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