CN103256439B - Expansion sealing device for gas turbine test table gas pipeline connection - Google Patents
Expansion sealing device for gas turbine test table gas pipeline connection Download PDFInfo
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- CN103256439B CN103256439B CN201310142576.7A CN201310142576A CN103256439B CN 103256439 B CN103256439 B CN 103256439B CN 201310142576 A CN201310142576 A CN 201310142576A CN 103256439 B CN103256439 B CN 103256439B
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Abstract
The invention relates to an expansion sealing device for gas turbine test table gas pipeline connection. No expansion sealing device for the gas turbine test table gas pipeline connection in the prior art is rapid in connection, and has low requirements for machining of a flange face. The expansion sealing device for the gas turbine test table gas pipeline connection is characterized by comprising a fixing pipeline, a lower flange, an expansion sealer, an air jet, a clamp nut and a sealer fixing seat, wherein the lower flange is provided with an air jet through hole, the expansion sealer is of an annular structure and comprises a sealing base, a connecting piece and an expansion piece, a sealed expansion inner cavity is formed in the expansion piece, an air hole is formed inside the expansion sealer, the upper end of the air hole is located in the expansion inner cavity, the lower end of the air hole is located in a sealed bottom flat surface, the air jet is fixed in the air hole, the expansion sealer is fixed on a lower flange flat surface of the lower flange, the sealed bottom flat surface is combined with the lower flange flat surface in an attached mode, and the air jet is fixed in the air jet through hole of the lower flange. The expansion sealing device for the gas turbine test table gas pipeline connection is rapid in connection, convenient to use, and good in sealing effect, and has low requirements for machining of the flange face.
Description
Technical field
The present invention relates to a kind of pipeline connection Inflatable sealing device, especially a kind of test bench for gas turbine gas pipeline connection Inflatable sealing device is related to, be mainly used in sealing the gas pipeline on test bench for gas turbine, be usually applied in super large caliber intake and exhaust pipeline.
Background technique
Gas turbine is the core of 21 century power equipment, is also the key technology of a mark one advanced degree in National Industrial basis in the world at present.At present, the whole world be engaged in gas turbine research, design, production and selling famous enterprise have 28, the whole world use industry gas turbine about have 50,000, and the Gas Turbine Market in the whole world almost monopolize by American-European company.In order to keep up with, each gas turbine company of China actively develops technical research, sets up test bench for gas turbine one after another.
Test bench for gas turbine is different from the application of other test stands in engineering, this is because test bench for gas turbine is only tested for new product, need regular carrying out to dismantle and install, sealing for tubing joints problem involved in disassembly process is the technical problem being difficult in related domain effectively capture always.
Also there is now a lot of conventional seal arrangement, if any mechanical seal device, stuffing seal, dry gas sealing device etc., when these seal arrangements are applied in the sealing position of distinct device, really good sealing effect can be played, but, for the seal for pipe joints problem on test bench for gas turbine, relate to regular dismounting, if adopt these conventional seal form, there is following several shortcoming and defect: 1, the pipeline section of gas turbine is long-pending generally can reach 5-10m
2, tolerance can reach 500,000-100 ten thousand m
3/ h, conventional seal form needs the special flanged surface of processing and Sealing, and flanged surface difficulty of processing is large, and processing technology is complicated, and cost is high; 2, because needs often carry out dismounting, the working life of Sealing is very limited, thus greatly reduces working life, and the financial cost of easily damaged parts is very large; 3, after each dismounting, when needing to reinstall, the butt junction location of pipeline is very difficult, higher to the technical requirements of operator, takes time and effort, considerably increases workload.
Also have at present and connect device fast, if publication date is on 05 15th, 1996, publication number is in the Chinese patent of CN2227249, disclose a kind of quick pipeline connector, the pipe collar of this quick pipeline connector and Sealing, by hydrodynamic pressure Expansion sealing, can dock and in the two rigidity semicircle housings interfixed, crouch and fill the cyclic spring lining courage that interior circle cross-section is straight line, inner circle is provided with annular opening, and the bi-side of housing are provided with the positioning table higher than lining courage; Although this quick pipeline connector can reduce the amount of machining of connected piece few, install fast, but the butt junction location between two velamen connecting tubes requires higher, and the situation of unbalance stress can not appear in two velamen connecting tubes in use, otherwise greatly can affect sealability.
In sum, a kind of intake and exhaust ducted test bench for gas turbine gas pipeline connection Inflatable sealing device connecting quick, convenient, low to flanged surface processing request, good sealing effect, be specially adapted to large-scale experiment device is not also had now.
Summary of the invention
The object of the invention is to overcome above shortcomings in prior art, and a kind of reasonable in design is provided, connect fast, easy to use, good sealing effect, the test bench for gas turbine gas pipeline connection Inflatable sealing device low to flanged surface processing request.
The present invention's adopted technological scheme that solves the problem is: the structural feature of this test bench for gas turbine gas pipeline connection Inflatable sealing device is: comprise fixing tube, lower flange, Expansion sealing device, valve, tightening nut and sealer fixed base, described lower flange is fixed on the upper end of fixing tube, the upper surface of this lower flange is lower flange plane, a valve through hole is provided with in described lower flange, the shape of this valve through hole and size all match with valve, and the outer wall of described valve is provided with outside thread, described Expansion sealing device is ring structure, the described shape of Expansion sealing device and the mating shapes of fixing tube, the size of this Expansion sealing device is greater than the mouth of pipe size of fixing tube, described Expansion sealing device comprises sealed base, link and expansion piece, the bottom of described sealed base is sealing bottom plane, the top of sealing base is fixed on the bottom of link, an airtight inflation lumen is provided with in described expansion piece, the top of this expansion piece is sealing top plane, the bottom of described expansion piece is fixed on the top of link, a pore is provided with in described Expansion sealing device, the upper end of described pore is arranged in inflation lumen, the lower end of this pore is arranged in sealing bottom plane, described valve is fixed in pore, described Expansion sealing device is fixed in the lower flange plane of lower flange by sealer fixed base, described sealing bottom plane and lower flange plane are fitted, described valve is fixed in the valve through hole of lower flange by tightening nut, is threaded between this valve and tightening nut.Make reasonable in design of the present invention thus, easy to use, good sealing effect, low to the processing request of flanged surface, without the need to carrying out special processing to flanged surface, under normal circumstances, in the present invention, the swell increment of Expansion sealing device can reach 20mm in the height direction, during use, the floating pipe being fixed with upper flange is placed in the top of lower flange, make Expansion sealing device between upper flange and lower flange, spacing can be there is between the flanged surface of upper flange and the top of Expansion sealing device, also can directly contact, when the fluid in the external world enters the inflation lumen of Expansion sealing device from valve, inflation lumen expands, the top of Expansion sealing device and the flanged surface of upper flange are fitted firmly, seal action is played between Expansion sealing device and upper flange, in addition, sealing bottom plane in Expansion sealing device and lower flange plane are fitted, when being full of fluid in inflation lumen, sealing bottom plane and lower flange plane are fitted firmly, seal action is played between Expansion sealing device and lower flange, thus reach the object of fixing tube and floating pipe sealing.When needs dismounting floating pipe, only the fluid in inflation lumen need be got rid of, will automatically be separated between Expansion sealing device and upper flange.The pipeline of connecting test of the present invention is very quick, mount and dismount very convenient, be suitable for very much connecting in the test bench for gas turbine gas pipeline needing regular carrying out to dismantle and install, effectively overcome the technical problem of test bench for gas turbine gas pipeline sealing for tubing joints involved in disassembly process.
As preferably, sealer fixed base of the present invention comprises inwall positioning plate and outer wall positioning plate, described inwall positioning plate and outer wall positioning plate are all fixed in the lower flange plane of lower flange, and this inwall positioning plate and outer wall positioning plate withstand on the inner and outer wall of sealed base respectively.What make that the present invention can be convenient thus positions Expansion sealing device, guarantees that the sealability of Expansion sealing device is more reliable.
As preferably, the ring structure of Expansion sealing device of the present invention is rectangular configuration, cirque structure or regular polygon structure.Make applicable surface of the present invention wider thus, the sealing demand of difform gas pipeline can be met.
As preferably, Expansion sealing device of the present invention is integral type structure.Make the structural design of Expansion sealing device in the present invention more reasonable thus.
As preferably, the material of Expansion sealing device of the present invention is butyl rubber.
As preferably, the cross section of inflation lumen of the present invention is list structure, and the two ends of this list structure are semicircle.Make the expansion effect of the Expansion sealing device in the present invention better thus, more effectively can guarantee the sealability of gas pipeline.
As preferably, the pore in Expansion sealing device of the present invention is vertical shape structure.
As preferably, the inner side and outer side of link of the present invention is respectively inside groove and water jacket, described sealer fixed base also comprises inside groove positioning plate and water jacket positioning plate, described inside groove positioning plate and water jacket positioning plate are separately fixed on inwall positioning plate and outer wall positioning plate, in the inside groove that this inside groove positioning plate and water jacket positioning plate are stuck in link and water jacket.Make the structural design of the sealer fixed base in the present invention more reasonable thus, can be convenient position Expansion sealing device, guarantees that the sealability of Expansion sealing device is more reliable.
The present invention compared with prior art, has the following advantages and effect: structure is simple, reasonable in design, easy to use, can effectively seal fixing tube and floating pipe, good sealing effect, low to the processing request of flanged surface, without the need to carrying out special processing to flanged surface.
The present invention is mainly used in sealing the gas pipeline on test bench for gas turbine, usually be applied in super large caliber intake and exhaust pipeline, when floating pipe installed by needs, the floating pipe being fixed with upper flange is fixed on the top of lower flange, do not need fixing upper flange and lower flange, Expansion sealing device is between upper flange and lower flange, when the fluid in the external world enters the inflation lumen of Expansion sealing device from valve, inflation lumen expands, make the flanged surface of the top of Expansion sealing device and upper flange fitting together tightly, seal action is played between Expansion sealing device and upper flange, meanwhile, sealing bottom plane and lower flange plane also fitting together tightly, seal action is played between Expansion sealing device and lower flange, thus reach object fixing tube and floating pipe being carried out sealing.As can be seen here, in the present invention, the installing space of floating pipe is very large, spacing can be there is between the flanged surface of upper flange and the top of Expansion sealing device, also can directly contact, under normal circumstances, as long as the flanged surface interface of floating pipe is fixed on within the scope of the 20mm of lower flange face, do not need to re-use bolt two flanged surfaces are tightened together, without the need to positioning floating pipe accurately and docking, decrease workload, the installation of floating pipe is very convenient.
When needs dismounting floating pipe, only the high-pressure liquid in inflation lumen need be discharged, automatically will be separated between Expansion sealing device and upper flange, and then floating pipe is disassembled.
As from the foregoing, the pipeline of connecting test of the present invention is very quick, the installation and removal of floating pipe are very convenient, be suitable for very much connecting in the test bench for gas turbine gas pipeline of the regular dismounting of needs and installation, effectively can overcome the technical problem of test bench for gas turbine gas pipeline sealing for tubing joints involved in disassembly process, often carry out the working life that dismounting also can not affect Expansion sealing device.When sealing between fixing tube and floating pipe, the top of Expansion sealing device and the flanged surface of upper flange fitting together tightly, sealing bottom plane and lower flange plane also fitting together tightly, without the need to processing special flanged surface and Sealing, overcome the technical problem that flanged surface difficulty of processing is large.
Accompanying drawing explanation
Fig. 1 is the structural representation of test bench for gas turbine gas pipeline connection Inflatable sealing device in the embodiment of the present invention.
Fig. 2 is the structural representation of Expansion sealing device in the embodiment of the present invention.
Fig. 3 is the structural representation in Fig. 2 after the amplification of A place.
Fig. 4 is the section structure for amplifying schematic diagram in B-B face in Fig. 3.
Fig. 5 is the section structure for amplifying schematic diagram in C-C face in Fig. 3.
Structure for amplifying schematic diagram after Fig. 6 is Expansion sealing device in the embodiment of the present invention, valve is connected with tightening nut.
Fig. 7 is the structural representation be arranged on the floating pipe of upper flange on the test bench for gas turbine gas pipeline connection Inflatable sealing device of the embodiment of the present invention, now, Expansion sealing device is not also inflated, and is separated from each other between Expansion sealing device and upper flange.
Fig. 8 is the structure for amplifying schematic diagram at B place in Fig. 7.
Fig. 9 is the structural representation after the Expansion sealing device in Fig. 7 is inflated, and now, is mutually close between Expansion sealing device and upper flange.
Figure 10 is the structure for amplifying schematic diagram at C place in Fig. 9.
Embodiment
Below in conjunction with accompanying drawing, also by embodiment, the present invention is described in further detail, and following examples are explanation of the invention and the present invention is not limited to following examples.
Embodiment.
See Fig. 1 to Figure 10, test bench for gas turbine gas pipeline connection Inflatable sealing device in the present embodiment comprises fixing tube 1, lower flange 2, Expansion sealing device 3, valve 4, tightening nut 5 and sealer fixed base 6, wherein, Expansion sealing device 3 is integral type structure, this Expansion sealing device 3 can adopt the manufacture of expandable rubber material to form, and the material as Expansion sealing device 3 can be butyl rubber.
Fixing tube 1 in the present embodiment is rectangular duct structure, lower flange 2 is fixed on the upper end of fixing tube 1, the upper surface of this lower flange 2 is lower flange plane 21, lower flange plane 21 is plane structure, in lower flange 2, be provided with a valve through hole 22, the shape of this valve through hole 22 and size all match with valve 4.The outer wall of the valve 4 in the present embodiment is provided with outside thread, and this externally threaded shape and size all match with tightening nut 5, makes can be threaded between tightening nut 5 with valve 4.
Expansion sealing device 3 in the present embodiment is the ring structure of rectangle, the i.e. shape of Expansion sealing device 3 and the mating shapes of fixing tube 1, the size that Expansion sealing device 3 surrounds is greater than the mouth of pipe size of fixing tube 1, and Expansion sealing device 3 can be sealed fixing tube 1 completely.Expansion sealing device 3 in the present invention can be other ring structure, the ring structure of such as Expansion sealing device 3 can be cirque structure or regular polygon structure, and regular polygon structure comprises positive triangle structure, square structure, regular pentagon structure, regular hexagon structure, positive Heptagon structure, octagon structure, positive nonagon structure etc.
Expansion sealing device 3 in the present embodiment comprises sealed base 31, link 32 and expansion piece 33, wherein, the bottom of sealed base 31 is sealing bottom plane 311, and sealing bottom plane 311 be planar structure, seal bottom plane 311 can completely and the lower flange plane 21 of lower flange 2 fit tightly.The top of sealed base 31 is fixed on the bottom of link 32.
The present embodiment is provided with an airtight inflation lumen 331 in expansion piece 33, and the top of this expansion piece 33 is sealing top plane 332, and sealing top plane 332 is planar structure.The bottom of expansion piece 33 is fixed on the top of link 32.In the present embodiment, the shape of inflation lumen 331 can be selected as required, and the cross section as inflation lumen 331 can be list structure, and the two ends of this list structure are semicircle, as shown in the drawing; The cross section of inflation lumen 331 also can be only list structure etc.
A pore 34 is provided with in the Expansion sealing device 3 of the present embodiment, the upper end of pore 34 is arranged in inflation lumen 331, the lower end of this pore 34 is arranged in sealing bottom plane 311, namely airtight inflation lumen 331 communicates with the external world by pore 34, under normal circumstances, the pore 34 in Expansion sealing device 3 is vertical shape structure.Valve 4 in the present embodiment is fixed in pore 34, the high-pressure liquid of outside can be input in inflation lumen 331 by valve 4, and inflation lumen 331 is expanded.Fluid for inflation lumen 331 being carried out expanding can be gas, also can use liquid.
In the present embodiment, the inner side and outer side of link 32 is respectively inside groove 321 and water jacket 322, sealer fixed base 6 comprises inwall positioning plate, inside groove positioning plate, outer wall positioning plate and water jacket positioning plate, wherein, inwall positioning plate and outer wall positioning plate are all fixed in the lower flange plane 21 of lower flange 2, this inwall positioning plate and outer wall positioning plate withstand on the inner and outer wall of sealed base 31 respectively, and the inner and outer wall of sealed base 31 represents with n and w respectively.And inside groove positioning plate and water jacket positioning plate are separately fixed on inwall positioning plate and outer wall positioning plate, in the inside groove 321 that this inside groove positioning plate and water jacket positioning plate are stuck in link 32 and water jacket 322.As can be seen here, Expansion sealing device 3 in the present embodiment is fixed in the lower flange plane 21 of lower flange 2 by sealer fixed base 6, fit with lower flange plane 21 in sealing bottom plane 311, valve 4 is fixed in the valve through hole 22 of lower flange 2 by tightening nut 5, is threaded between this valve 4 and tightening nut 5.
Test bench for gas turbine gas pipeline connection Inflatable sealing device in the present embodiment is mainly used in sealing the gas pipeline on test bench for gas turbine, is usually applied in super large caliber intake and exhaust pipeline.When test stand is tested, after installing main frame, start to connect gas pipeline, during use, the floating pipe 7 with upper flange 8 is fixed on the top of lower flange 2, and the lower surface in upper flange 8 is upper flange surface 81, without the need to adopting bolt to be fixed between upper flange 8 and lower flange 2, Expansion sealing device 3, between upper flange 8 and lower flange 2, when Expansion sealing device 3 is not also inflated, does not play sealing effect between the upper flange surface 81 of Expansion sealing device 3 and upper flange 8.After floating pipe 7 installs, in Expansion sealing device 3, fluid is filled with by valve 4, Expansion sealing device 3 is expanded, the height of Expansion sealing device 3 raises, sealing top plane 332 in expansion piece 33 withstands in the upper flange surface 81 of upper flange 8, thus reaches the object of sealing between Expansion sealing device 3 and upper flange 8.
In the present embodiment, the swell increment of Expansion sealing device 3 can reach 20mm in short transverse, so the installing space of floating pipe 7 is very large, as long as the distance between the upper flange 8 of floating pipe 7 and lower flange 2 is less than in the scope of 20mm, do not need to re-use bolt two flanged surfaces are tightened together, and only need the pressurized air being passed into 0.3Mpa ~ 0.8Mpa by valve 4 in Expansion sealing device 3, pressurized air is for utilizing plant site air feed, from the horse's mouth.Through site test, the test bench for gas turbine gas pipeline connection Inflatable sealing device leak-down rate in the present embodiment is less than 0.25%, can meet test requirements document completely.
In addition, it should be noted that, the specific embodiment described in this specification, the shape, institute's title of being named etc. of its parts and components can be different, and the above content described in this specification is only to structure example of the present invention explanation.The equivalence change that structure, feature and the principle of all foundations described in inventional idea of the present invention are done or simple change, be included in the protection domain of patent of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present invention or surmount this scope as defined in the claims, protection scope of the present invention all should be belonged to.
Claims (8)
1. a test bench for gas turbine gas pipeline connection Inflatable sealing device, it is characterized in that: comprise fixing tube, lower flange, Expansion sealing device, valve, tightening nut and sealer fixed base, described lower flange is fixed on the upper end of fixing tube, the upper surface of this lower flange is lower flange plane, a valve through hole is provided with in described lower flange, the shape of this valve through hole and size all match with valve, and the outer wall of described valve is provided with outside thread, described Expansion sealing device is ring structure, the described shape of Expansion sealing device and the mating shapes of fixing tube, the size of this Expansion sealing device is greater than the mouth of pipe size of fixing tube, described Expansion sealing device comprises sealed base, link and expansion piece, the bottom of described sealed base is sealing bottom plane, the top of sealing base is fixed on the bottom of link, an airtight inflation lumen is provided with in described expansion piece, the top of this expansion piece is sealing top plane, the bottom of described expansion piece is fixed on the top of link, a pore is provided with in described Expansion sealing device, the upper end of described pore is arranged in inflation lumen, the lower end of this pore is arranged in sealing bottom plane, described valve is fixed in pore, described Expansion sealing device is fixed in the lower flange plane of lower flange by sealer fixed base, described sealing bottom plane and lower flange plane are fitted, described valve is fixed in the valve through hole of lower flange by tightening nut, is threaded between this valve and tightening nut.
2. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, it is characterized in that: described sealer fixed base comprises inwall positioning plate and outer wall positioning plate, described inwall positioning plate and outer wall positioning plate are all fixed in the lower flange plane of lower flange, and this inwall positioning plate and outer wall positioning plate withstand on the inner and outer wall of sealed base respectively.
3. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, is characterized in that: the ring structure of described Expansion sealing device is rectangular configuration, cirque structure or regular polygon structure.
4. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, is characterized in that: described Expansion sealing device is integral type structure.
5. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, is characterized in that: the material of described Expansion sealing device is butyl rubber.
6. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, is characterized in that: the cross section of described inflation lumen is list structure, and the two ends of this list structure are semicircle.
7. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 1, is characterized in that: the pore in described Expansion sealing device is vertical shape structure.
8. test bench for gas turbine gas pipeline connection Inflatable sealing device according to claim 2, it is characterized in that: the inner side and outer side of described link is respectively inside groove and water jacket, described sealer fixed base also comprises inside groove positioning plate and water jacket positioning plate, described inside groove positioning plate and water jacket positioning plate are separately fixed on inwall positioning plate and outer wall positioning plate, in the inside groove that this inside groove positioning plate and water jacket positioning plate are stuck in link and water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310142576.7A CN103256439B (en) | 2013-04-23 | 2013-04-23 | Expansion sealing device for gas turbine test table gas pipeline connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310142576.7A CN103256439B (en) | 2013-04-23 | 2013-04-23 | Expansion sealing device for gas turbine test table gas pipeline connection |
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| Publication Number | Publication Date |
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| CN103256439A CN103256439A (en) | 2013-08-21 |
| CN103256439B true CN103256439B (en) | 2015-03-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310142576.7A Active CN103256439B (en) | 2013-04-23 | 2013-04-23 | Expansion sealing device for gas turbine test table gas pipeline connection |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105465517A (en) * | 2015-12-30 | 2016-04-06 | 中国核电工程有限公司 | Inflation sealing device |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63280966A (en) * | 1987-05-13 | 1988-11-17 | Hitachi Ltd | Gasket with branch |
| US4789165A (en) * | 1987-11-16 | 1988-12-06 | General Motors Corporation | Pressure compensating seal |
| CN2295875Y (en) * | 1996-11-06 | 1998-10-28 | 山东煤矿莱芜机械厂 | Assembled aerated sealer |
| CN2317363Y (en) * | 1998-01-13 | 1999-05-05 | 刘强 | Adjustable sealing gasket for valve |
| JP4689177B2 (en) * | 2004-02-27 | 2011-05-25 | 日本バルカー工業株式会社 | Sealing device |
| CN2856674Y (en) * | 2005-12-10 | 2007-01-10 | 张桂意 | Flange sealing device of oil field pipeline valve |
| CN2898465Y (en) * | 2006-03-28 | 2007-05-09 | 建铯科技股份有限公司 | Improved O-type ring |
| CN101551048A (en) * | 2008-06-19 | 2009-10-07 | 陈阵 | Automatic expansion compensation type pipe joint |
| CN203223675U (en) * | 2013-04-23 | 2013-10-02 | 中国联合工程公司 | Expansion sealing device for gas turbine test bed air pipeline connection |
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2013
- 2013-04-23 CN CN201310142576.7A patent/CN103256439B/en active Active
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Address after: The city of Hangzhou city of Zhejiang Province, 310022 Stonebridge Road No. 338 Patentee after: United Engineers Ltd in China Address before: The city of Hangzhou city of Zhejiang Province, 310022 Stonebridge Road No. 338 Patentee before: China Lianhe Engineering Co., Ltd., China |