CN203140697U - Pouring system for casting resin sands of gas compressor bearing seat of gas turbine - Google Patents
Pouring system for casting resin sands of gas compressor bearing seat of gas turbine Download PDFInfo
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- CN203140697U CN203140697U CN 201320136407 CN201320136407U CN203140697U CN 203140697 U CN203140697 U CN 203140697U CN 201320136407 CN201320136407 CN 201320136407 CN 201320136407 U CN201320136407 U CN 201320136407U CN 203140697 U CN203140697 U CN 203140697U
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Abstract
The utility model discloses a pouring system for casting resin sands of a gas compressor bearing seat of a gas turbine. The pouring system comprises a sprue, a distribution runner, distribution pouring gates, a runner, a filter packet and an inner gate, wherein the structure from the sprue to the runner is a two-stage average distribution structure; the sprue is distributed to two distribution pouring gates through the distribution runner and is then equally distributed to the runner; the sprue, the runner and the inner gate are obtained by modeling; and the distribution runner and the distribution pouring gates are formed by prefabricating and embedding ceramic tubes. The pouring system is reasonable and smart in layout, and is in the two-stage distribution structure; and metal liquid which is subjected to multi-stage buffer, depressurizing and turbulence suppression steadily flows from the bottom of a casting through the inner gate, so that secondary oxidization slag inclusion can be effectively reduced, the casting can be solidified and fed, the surface and interior quality requirements of the casting are met, and the quality of the casting is greatly improved.
Description
Technical field
The utility model relates to a kind of system for casting and pouring, relates in particular to a kind of system for casting and pouring of gas turbine blower bearing block.
Background technology
The Shanghai steam turbine plant is domestic one of the producer of gas turbine that designs the earliest, produces.At the beginning of 21 century, the electric another major opportunity that welcomes the gas turbine development in Shanghai.Come into effect in China in 2000 that " during the West-east Gas engineering, Shanghai electric target of building with regard to the clear and definite new highland of gas turbine has proposed Shanghai and will build up one and comprehensively can be the target of the gas turbine production base of user's all-around service.Calendar year 2001, under the overall background of country's " changing technology with market ", Shanghai is electric has set up partnership relation with Siemens, has introduced a series of gas turbine technologies from Siemens.
First foundry goods of F level gas turbine blower bearing block of our company's trial-production, substance 13500kg, the long 4008mm of profile, wide 2004mm, high 1267mm, flare (see figure 1).Foundry goods high pressure district carries out German TLV technical standard, and foundry goods integral body is carried out Non-Destructive Testing, and wherein ultrasound examination must reach 2 grades of requirements in the DIN EN 1268-3 standard; Magnetic detects 3 grades of requirements must reaching in DIN EN 1369 standards, and must not there be defectives such as scum silica frost, crackle on the shrinkage cavity, shrinkage porosite and the surface that namely require in foundry goods inside must not influential foundry goods to use.Finish high-quality foundry goods like this, the design of running gate system is even more important, if adopt traditional running gate system, obviously can not ensure the quality of products.Because no matter traditional running gate system is closed, semi-enclosed or open, all can't guarantee the smooth flow of molten metal in whole casting process, roll up gas, turbulent flow easily, cause scum silica frost, crackle and shrinkage porosite class defective.In order to guarantee the quality of foundry goods, just must design a kind of running gate system that can satisfy the foundry goods of high-quality requirement.
The utility model content
Technical problem to be solved in the utility model provides a kind of running gate system that rationally is used for the casting of gas turbine blower bearing block resin sand cleverly, secondary shunting distribution structure is set, flow into reposefully by the bottom of ingate from foundry goods through the molten metal after multi-buffer, decompression, the inhibition turbulent flow, improve the quality of foundry goods greatly.
The utility model is to solve the problems of the technologies described above the technical scheme that adopts to be:
A kind of running gate system for the casting of gas turbine blower bearing block resin sand, comprise a quantitative cup, sprue, distribution cross gate, two distribute running channel, cross gate, some bag filter and some ingates that has the refractory filter, ingate is positioned at the foundry goods bottom; Described cross gate is arranged on the middle part of the inside and outside circle of foundry goods, and some ingates alternately are connected in the bottom of cross gate bottom and the inside and outside circle of foundry goods with dividing equally, are provided with the bag filter that has the refractory filter between described runner gate and the ingate; Described sprue is two-stage average mark flow distribution structure to the structure of cross gate, described sprue is assigned to two by a distribution cross gate one-level and distributes running channel, two are distributed running channel is secondary branch flow distribution, and 4 outlets of described distribution running channel are arranged at described cross gate top with dividing equally; Described sprue, cross gate and ingate obtain by phenolic sand molding, and described distribution cross gate and distribution running channel are made of the earthenware of directly burying underground in the resin sand mold.
From described sprue, to distribute cross gate be the full open model cast gate to distributing before the running channel, be open cast gate after sealing earlier from described distribution running channel, cross gate to ingate.
Further, the ratio of the minimum sectional area of described sprue, distribution cross gate, distribution running channel, cross gate and ingate is: 0.71:0.99:1.27:1:1.86.
More excellent, described sprue effective cross-section diameter is 120mm, and described distribution cross gate effective cross-section diameter is 100mm, and described distribution running channel effective cross-section diameter is 80mm.
More excellent described ingate is on average arranged 15 roads, and described ingate cross section is and further satisfies the elliptical deformation diameter shape that open cast gate arranges requirement.
The gas turbine blower bearing block is that a three-dimensional dimension is bigger, and it is a complicated problems that the large scale foundry goods of the about 330cm of average hydrostatic head Hp during cast, the liquid of how controlling well in its production process flow and fill type always,
The utility model is shunted distribution structure with sprue to being set to secondary between the cross gate cleverly, adopted simultaneously the phenolic sand molding that is different from traditional handicraft, interlude more complicated secondary shunting distribution structure by the earthenware moulding then prefabricated being embedded in the sand mold with before and after sprue, the cross gate be connected coupling, thereby constituted more rational running gate system; By distributing runner gate and distributing cast gate to be arranged on the lower middle of pouring position, can reduce the drop height of molten metal from the cup to the ingate.Sprue, distribution cross gate, distribution cast gate, runner gate are designed to open step by step, have both guaranteed the molten metal flow, also reduced the flow velocity of molten metal in gate system.Distribute runner gate and distribute cast gate to play cushioning effect.The molten metal that comes from sprue is entering runner gate after the buffering of over-allocation runner gate and distribution cast gate, be mingled with and further suppress turbulent flow by the filtration of the ceramic filter in bag filter once oxidation then, flow into reposefully by the bottom of ingate from foundry goods through multi-buffer, decompression, inhibition turbulent flow molten metal afterwards.Of the present utility model this open earlier, middle sealing, open and be combined with the running gate system of ceramic filter again, running gate system before ceramic filter plays buffering, the effect of decompression, reduce molten metal to the impact of ceramic filter, suppress turbulent flow by ceramic filter, the ingate that makes molten metal enter multiple tracks conformal layout by laminar condition steadily flows into from the foundry goods bottom, avoid rolling, reflux and wash away die cavity, foundry goods is heated evenly, thereby can effectively reduce the secondary oxidation slag inclusion, be conducive to the casting solidification feeding, satisfy surface and the internal soundness requirement of foundry goods.
As a kind of improvement of the present utility model, the ratio of the minimum sectional area of described sprue, described distribution cross gate, described distribution running channel, described cross gate and described ingate is: 0.71:0.99:1.27:1:1.86, this running gate system has buffering, reduces pressure and reduces the effect of turbulent flow.At the gas turbine blower bearing block we to select described sprue effective cross-section diameter for use be 120mm, described distribution cross gate effective cross-section diameter is 100mm, described distribution running channel effective cross-section diameter is that 80mm is as optimized cast gate parameter.
Further, described ingate conformal is arranged 15 roads, and ingate Cross section Design ovalisation is become the shape of diameter, further satisfies the requirement that arranges of open cast gate.Liquid metal filling speed can be controlled at≤65cm/s during casting technique of the present utility model, running gate system made and produce.
Description of drawings
Fig. 1 is used for one of the structural representation of the running gate system of gas turbine blower bearing block resin sand casting for the utility model;
Fig. 2 be used for for the utility model the casting of gas turbine blower bearing block resin sand running gate system structural representation two;
Fig. 3 is each running channel structural representation of running gate system.
Among the figure:
1, sprue 2, distribution cross gate 3, distribution running channel
4, cross gate 5, refractory filter 6, bag filter
7, ingate.
The specific embodiment
The utility model will be further described below in conjunction with drawings and Examples.
Fig. 1 shows the gas turbine blower bearing block, it is tubaeform that this foundry goods main body is Internal and external cycle, the phenolic sand molding technology that the utility model adopts, its running gate system comprises a quantitative cup, a sprue 1, a distribution cross gate 2, two distribution running channels 3, a cross gate 4,15 bag filter 6 and 15 ingates 7 that have refractory filter 5, and ingate 7 is positioned at the foundry goods bottom; Described cross gate 4 is arranged on the middle part of the inside and outside circle of foundry goods, and 15 ingates 7 alternately are connected in the bottom of cross gate bottom and the inside and outside circle of foundry goods with dividing equally, are provided with the bag filter 6 that has refractory filter 5 between described runner gate 4 and the ingate 7; Described ingate 7 cross sections are satisfies the elliptical deformation diameter shape that open cast gate arranges requirement.
Described sprue 1 is two-stage average mark flow distribution structure to the structure of cross gate 4, described sprue 1 is assigned to two by distribution cross gate 2 one-levels and distributes running channel 3, two are distributed running channel 3 for secondary divides flow distribution, and 4 outlets of described distribution running channel 3 are arranged at described cross gate 4 tops with dividing equally; Described sprue 1, cross gate 4 and ingate 7 obtain by phenolic sand molding when phenolic sand molding, described distribution cross gate 2 and distribution running channel 3 are the prefabricated formation of earthenware, directly imbed when phenolic sand molding in the resin sand and engage moulding with described sprue 1 and cross gate 4.
During this art shapes, described bag filter 6 and ingate 7 are arranged under casing, and the described sprue 1 of part is arranged in top box, and the described sprue 1 of remainder is arranged in the mud core.
From described sprue 1, to distribute cross gate 2 be the full open model cast gate to distributing before the running channel 3, it is the open cast gate in sealing back earlier from described distribution running channel 3, cross gate 4 to ingate 7, the ratio of the minimum sectional area of sprue 1, distribution cross gate 2, distribution running channel 3, cross gate 4 and ingate 7 is: 0.71:0.99:1.27:1:1.86, described sprue effective cross-section diameter is 120mm, described distribution cross gate effective cross-section diameter is 100mm, and described distribution running channel effective cross-section diameter is 80mm.Certain variation owing to various factors such as weather temperature, humidity, the adjustment that the parameter of the ratio of the diameter of section of cast gate, area of section also can be suitable.
Liquid metal filling speed can be controlled at≤65cm/s during casting technique of the present utility model, running gate system made and produce.
Above-mentioned 15 bag filter and 15 ingates that have the refractory filter, along with the variation of unit ingate sectional area and the accommodation of parameter, its number also can be done suitable adjustment.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion by described protection domain with claim.
Claims (5)
1. one kind is used for the running gate system that gas turbine blower bearing block resin sand is cast, it is characterized in that: comprise a quantitative cup, sprue, distribution cross gate, two distribute running channel, cross gate, some bag filter and some ingates that has the refractory filter, ingate is positioned at the foundry goods bottom; Described cross gate is arranged on the middle part of the inside and outside circle of foundry goods, and some ingates alternately are connected in the bottom of cross gate bottom and the inside and outside circle of foundry goods with dividing equally, are provided with the bag filter that has the refractory filter between described runner gate and the ingate; Described sprue is two-stage average mark flow distribution structure to the structure of cross gate, described sprue is assigned to two by a distribution cross gate one-level and distributes running channel, two are distributed running channel is secondary branch flow distribution, and 4 outlets of described distribution running channel are arranged at described cross gate top with dividing equally; Described sprue, cross gate and ingate obtain by phenolic sand molding, and described distribution cross gate and distribution running channel are made of the earthenware of directly burying underground in the resin sand mold.
2. running gate system according to claim 1 is characterized in that: from described sprue, distribute cross gate to be the full open model cast gate before distributing running channel, be open cast gate after the sealing earlier from described distribution running channel, cross gate to ingate.
3. running gate system according to claim 2 is characterized in that: described sprue, distribute cross gate, distribute the ratio of the minimum sectional area of running channel, cross gate and ingate to be: 0.71:0.99:1.27:1:1.86.
4. running gate system according to claim 3, it is characterized in that: described sprue effective cross-section diameter is 120mm, and described distribution cross gate effective cross-section diameter is 100mm, and described distribution running channel effective cross-section diameter is 80mm.
5. according to claim 1,2,3 or 4 described running gate systems, it is characterized in that: described ingate is on average arranged 15 roads, and described ingate cross section is and further satisfies the elliptical deformation diameter shape that open cast gate arranges requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136407 CN203140697U (en) | 2013-03-25 | 2013-03-25 | Pouring system for casting resin sands of gas compressor bearing seat of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320136407 CN203140697U (en) | 2013-03-25 | 2013-03-25 | Pouring system for casting resin sands of gas compressor bearing seat of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203140697U true CN203140697U (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320136407 Withdrawn - After Issue CN203140697U (en) | 2013-03-25 | 2013-03-25 | Pouring system for casting resin sands of gas compressor bearing seat of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203140697U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170580A (en) * | 2013-03-25 | 2013-06-26 | 上海宏钢电站设备铸锻有限公司 | Process for casting bearing base of gas compressor of combustion gas turbine and pouring system thereof |
| CN103949624A (en) * | 2014-04-22 | 2014-07-30 | 宁波日星铸业有限公司 | Right angle turning pouring pipeline |
| CN104384485A (en) * | 2014-11-10 | 2015-03-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Double-buffering casting system for directional hollow turbine work blade |
| CN104475718A (en) * | 2014-12-29 | 2015-04-01 | 湖州市千金宝云机械铸件有限公司 | Casting and pouring device |
-
2013
- 2013-03-25 CN CN 201320136407 patent/CN203140697U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103170580A (en) * | 2013-03-25 | 2013-06-26 | 上海宏钢电站设备铸锻有限公司 | Process for casting bearing base of gas compressor of combustion gas turbine and pouring system thereof |
| CN103170580B (en) * | 2013-03-25 | 2016-03-09 | 上海宏钢电站设备铸锻有限公司 | A kind of casting technique of gas turbine blower bearing block and running gate system thereof |
| CN103949624A (en) * | 2014-04-22 | 2014-07-30 | 宁波日星铸业有限公司 | Right angle turning pouring pipeline |
| CN103949624B (en) * | 2014-04-22 | 2016-08-17 | 宁波日星铸业有限公司 | Right-angled bend cast pipeline |
| CN104384485A (en) * | 2014-11-10 | 2015-03-04 | 沈阳黎明航空发动机(集团)有限责任公司 | Double-buffering casting system for directional hollow turbine work blade |
| CN104384485B (en) * | 2014-11-10 | 2016-01-06 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of directed hollow moving turbine blade double buffering running gate system |
| CN104475718A (en) * | 2014-12-29 | 2015-04-01 | 湖州市千金宝云机械铸件有限公司 | Casting and pouring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130821 Effective date of abandoning: 20160309 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |