CN105507963A - Cooling system for cooling bolt working at high temperature - Google Patents
Cooling system for cooling bolt working at high temperature Download PDFInfo
- Publication number
- CN105507963A CN105507963A CN201510981563.8A CN201510981563A CN105507963A CN 105507963 A CN105507963 A CN 105507963A CN 201510981563 A CN201510981563 A CN 201510981563A CN 105507963 A CN105507963 A CN 105507963A
- Authority
- CN
- China
- Prior art keywords
- cooling
- bolt
- conduit
- vapour
- flange
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/08—Cooling; Heating; Heat-insulation
- F01D25/12—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
- F01D25/24—Casings; Casing parts, e.g. diaphragms, casing fastenings
- F01D25/243—Flange connections; Bolting arrangements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2260/00—Function
- F05D2260/30—Retaining components in desired mutual position
- F05D2260/31—Retaining bolts or nuts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The invention provides a cooling system for cooling a bolt working at high temperature. The bolt is used for connecting two flanges. The cooling system comprises a cooling gas source, a cooling gas mother pipe connected to the cooling gas source and a cooling gas pipeline connected to the cooling gas mother pipe and arranged inside and/or outside the bolt; cooling gas flowing out from the cooling gas source flows through the cooling gas mother pipe and then flows through the cooling gas pipeline for cooling the bolt. The cooling system is used for cooling the bolt working at high temperature and can effectively lower the actual work temperature of the bolt, and therefore the problems of creep deformation and stress relaxation of the bolt working at high temperature can be solved, the overhaul period of sealing parts is effectively prolonged, the material grade of the bolt can be effectively lowered, and the cost can be lowered.
Description
Technical field
The present invention relates to a kind of cooling system, particularly relating to a kind of cooling system for cooling the bolt at high temperature worked.
Background technique
Steam turbine is one of crucial power equipment in power plant construction, is thermal power transfer is become mechanical energy and then converts the energy conversion device of electric energy to.Heat energy and pressure potential, through steam turbine, are converted to the mechanical energy of steam turbine by the high temperature produced by boiler, high pressure steam, and drive turbine rotor to export shaft work, this mechanical energy passes to generator by rotating shaft of steam turbine, thus converts mechanical energy to electric energy.Usually, in order to improve the efficiency of transformation of energy, the throttle (steam) temperature of steam turbine up to 600 DEG C, more to the high temperature of 700 DEG C, and also can may can reach more than 550 DEG C close to the flange seal bolt temperature of admission part in the future.Work bolt at such high temperatures, there will be the stress relaxation phenomenon because high temperature produces after long-time running.And for steam turbine, the lax of bolt means the generation of leaking vapour, the high temperature vapour spilt not only has influence on the efficiency of unit, even may cause the generation of production accident.
By cooling bolt, reduce the actual work temperature of bolt, make the bolt of original operating temperature up to 550 DEG C can be reduced to less than 400 DEG C, this is not only favourable to the stress relaxation of bolt, and due to the heat expansion of flange, the hot tight power of bolt more can be made to increase, make the sealing effect of flange better.This operation for superhigh temperature thermal machine will be absolutely necessary measure, effectively can reduce the material rate of high temperature bolt, can ensure the permanently effective of the tight power of bolt and flange seal simultaneously, extend the overhaul life of unit.
Summary of the invention
In view of content described above, technical problem to be solved by this invention is, provides a kind of cooling system for cooling the bolt at high temperature worked, and this cooling system can by cooling bolt, reduce the actual work temperature of bolt, alleviate high temperature creep and the stress relaxation of bolt.
For this reason, the invention provides a kind of cooling system for cooling the bolt at high temperature worked, described bolt is for connecting two flanges, described cooling system comprises cooling gas resources, is connected to the cooling vapour of described cooling gas resources mother pipe and is connected to described cooling vapour mother manages and is arranged on the inside of described bolt and/or the cooling steam pipe road of outside, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling steam pipe road is flowed through, to cool described bolt.
According to an aspect of the present invention, described cooling steam pipe road comprises and is arranged on the inner and blind hole of longitudinal extension along described bolt of described bolt, and comprise one end be connected to described cooling vapour mother pipe and the other end is inserted into the cooling vapour arm in described blind hole, the diameter of described blind hole is greater than the diameter of described cooling vapour arm, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling vapour arm is entered, the space between described blind hole and described cooling vapour arm is entered after described cooling vapour arm outflow, finally flow out from the aperture of described blind hole, to cool from inside to described bolt.
Preferably, the tube wall of described cooling vapour arm has multiple leakage steam vent, cooling vapour can escape to space between described blind hole and described cooling vapour arm via described leakage steam vent.Thus, the cooling effect to described bolt can be strengthened.
According to a further aspect in the invention, described bolt does not run through one of them flange, described cooling steam pipe road comprises and is arranged on the inner and through hole of longitudinal extension along described bolt of described bolt, and comprise one end and be connected to described cooling vapour mother pipe and the other end is connected to the cooling vapour arm of one end of described through hole, and comprise and being arranged in one of them flange described and the hole be communicated with the other end of the described through hole of described bolt, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling vapour arm is flowed through successively, the described through hole of described bolt and the described hole of one of them flange described, finally flow out from the described hole of one of them flange described, to cool from inside to described bolt.
According to another aspect of the invention, two flanges described in described bolt-through, described cooling steam pipe road comprises and is arranged on the inner and through hole of longitudinal extension along described bolt of described bolt, and comprise one end and be connected to described cooling vapour mother pipe and the other end is connected to the cooling vapour arm of one end of described through hole, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then the described through hole of described cooling vapour arm and described bolt is flowed through successively, finally flow out from the other end of described through hole, to cool from inside to described bolt.
In accordance with a further aspect of the present invention, at least one flange is provided with the first conduit being connected to described cooling gas resources, to be communicated with described first conduit and around described bolt along the second conduit of the longitudinal extension of described bolt and the 3rd conduit that is communicated with external environment condition with described second conduit, gap is there is between described second conduit and described bolt, described first conduit is used as described cooling vapour mother pipe, described cooling steam pipe road comprises described second conduit and described 3rd conduit, the cooling steam flow flowed out from described cooling gas resources is through described first conduit, then the space between described second conduit and described bolt is flowed through, flow out finally by by described 3rd conduit, to cool from outside to described bolt.
Preferably, the surface adjacent with another flange of a described first conduit flange wherein extends perpendicular to described bolt, described second conduit extends at least one flange, the diameter of described second conduit is greater than the diameter of described bolt and is less than the maximum transverse size of the nut be screwed on described bolt, described 3rd conduit is arranged on the end of described second conduit, and described 3rd conduit has the diameter of the maximum transverse size being greater than described nut and circumferentially extends in the scope being less than 360 degree.Advantageously, described first conduit can be compensating groove.
Advantageously, described two flanges are bolted together by multiple, and described multiple bolt shares described cooling vapour mother pipe.
Described bolt is for connecting the flange close to steam turbine admission part, and described cooling gas resources is outside vapour source or the through-flow downstream of steam turbine.
Bolt of the present invention is not limited to for fastening two flanges, but also may be used for fastening multiple flange.
Above All aspects of can be used alone, and also can combinationally use in conflict free situation, to strengthen cooling effect.
The present invention successfully solves creep and the Stress relaxation of the bolt at high temperature worked, and effectively can extend the overhaul life of Sealing.The present invention also effectively can reduce the grade of high temperature bolt material, thus reduces costs.Further, the present invention can use few change to reach cooling effect, does not affect original structure.
Accompanying drawing explanation
Described the present invention by non-limiting example with reference to the accompanying drawings, wherein:
Fig. 1 is the partial schematic sectional view of cooling system according to a first embodiment of the present invention;
Fig. 2 is the partial schematic sectional view of the cooling system of flexible program according to a first embodiment of the present invention;
Fig. 3 is the partial schematic sectional view of cooling system according to a second embodiment of the present invention;
Fig. 4 is the partial schematic sectional view of the cooling system of flexible program according to a second embodiment of the present invention;
Fig. 5 is the partial schematic sectional view of cooling system according to a third embodiment of the present invention;
Fig. 6 is the A-A cross-sectional schematic of cooling system according to a third embodiment of the present invention;
Fig. 7 is the partial schematic sectional view of the cooling system of flexible program according to a third embodiment of the present invention;
Fig. 8 is the B-B cross-sectional schematic of the cooling system of flexible program according to a third embodiment of the present invention.
Element numbers explanation
1 cooling vapour mother pipe
1 ' first conduit
2 cooling vapour arms
3 nuts
3 ' nut
4 bolts
5 first flanges
5 ' second flange
6 blind holes
6 ' through hole
6 " through hole
7 holes
8 second conduits
8 ' second conduit
9 the 3rd conduits
9 ' the 3rd conduit
Embodiment
The cooling system for cooling the bolt at high temperature worked according to the embodiment of the present invention is described with reference to the accompanying drawings.In the following description, many details have been set forth to enable person of ordinary skill in the field understand the present invention better.But be apparent that for the technician in art, realization of the present invention can not have some in these details.In addition, should be understood that, the present invention is not limited to introduced specific embodiment.On the contrary, can consider to implement the present invention by the combination in any of feature below, and no matter whether they relate to different embodiments.Therefore, the following examples and advantage use for illustrative purposes only, and should not be counted as limitations on the claims, unless clearly proposed in the claims.
The present invention comes from such inventive concept: cooling vapour flows in the cooling steam pipe road of the inside and/or outside that are arranged on bolt, to cool from inner and/or outside bolt.
Fig. 1 to Fig. 4 illustrates according to of the present invention from the inner embodiment to the cooling system that bolt cools of bolt.Fig. 5 to Fig. 8 illustrates according to of the present invention from the outside embodiment to the cooling system that bolt cools of bolt.Cooling system in these embodiments may be used alone, can also be used in combination, unless there are conflict.Such as, the technological scheme of Fig. 1 and Fig. 5 can be combined, to cool from inside and outside bolt.
Can such as cooling the bolt of the flange for the fastening admission part close to steam turbine according to cooling system of the present invention.But it should be noted that, the present invention is not limited to this, but may be used for cooling any bolt at high temperature worked, even may be used for cooling any structure similar with bolt that be that at high temperature work.Describe the present invention below in conjunction with the concrete example for steam turbine.
Cooling gas resources used in the present invention can be outside vapour source, also can be the through-flow downstream of steam turbine.
Fig. 1 is the partial schematic sectional view of cooling system according to a first embodiment of the present invention.As shown in Figure 1, the lower end of bolt 4 is passed the first flange 5 and is screwed in the second flange 5 ', and the upper end of bolt 4 is tightened on the first flange 5 by nut 3, thus the first flange 5 and the second flange 5 ' is tightened together.Cooling system according to a first embodiment of the present invention comprises cooling gas resources (not shown), is connected to the female pipe 1 of the cooling vapour of cooling gas resources, cools vapour arm 2 and is arranged on the blind hole 6 of bolt 4 inside.Blind hole 6 is along the longitudinal extension of bolt 4.Preferably, blind hole 6 extends along the central longitudinal axis of bolt 4.The length of the bolt 4 that the degree of depth of blind hole 6 need be able to cool according to reality is selected suitably.One end of cooling vapour arm 2 is connected to the female pipe 1 of cooling vapour, and its other end is inserted in blind hole 6.The diameter of blind hole 6 is greater than the diameter of cooling vapour arm 2, thus there is gap between the internal surface and the outer surface of cooling vapour arm 2 of blind hole 6; Further, between the bottom surface and the lower nozzle of cooling vapour arm 2 of blind hole 6, also there is gap; Thus cooling vapour can flow in the space between blind hole 6 and cooling vapour arm 2.Arrow in Fig. 1 shows the dynamic direction of cooling steam flow.From the female pipe 1 of cooling steam flow supercooling vapour that cooling gas resources flows out, then enter cooling vapour arm 2, after the lower nozzle outflow via cooling vapour arm 2, enter the space between blind hole 6 and cooling vapour arm 2, finally flow out from the aperture of blind hole 6.Like this, cooling vapour cools the internal face of bolt 4, thus ensure that the temperature of bolt 4 is less than the temperature of the first flange 5 and the second flange 5 '.
Fig. 2 illustrates flexible program according to a first embodiment of the present invention.The difference of the flexible program shown in Fig. 2 and Fig. 1 is only, the lower end of bolt 4, through after the first flange 5, is not be screwed in the second flange 5 ', and is through the second flange 5 ' and is tightened on the second flange 5 ' by another nut 3 '.
In another flexible program of unshowned first embodiment of the invention, the tube wall of cooling vapour arm 2 has multiple leakage steam vent, cooling vapour can leak steam vent via these and escape to space between blind hole 6 and cooling vapour arm 2, thus enhances the cooling to bolt 4.
Fig. 3 is the partial schematic sectional view of cooling system according to a second embodiment of the present invention.As shown in Figure 3, the lower end of bolt 4 is passed the first flange 5 and is screwed in the second flange 5 ', and the upper end of bolt 4 is tightened on the first flange 5 by nut 3, thus the first flange 5 and the second flange 5 ' is tightened together.Cooling system according to a second embodiment of the present invention comprises cooling gas resources (not shown), is connected to the female pipe 1 of the cooling vapour of cooling gas resources, cools vapour arm 2, is arranged on the through hole 6 ' of bolt 4 inside and is arranged on the hole 7 be communicated with in the second flange 5 ' and with the lower end of through hole 6 '.Through hole 6 ' is along the longitudinal extension of bolt 4.Preferably, through hole 6 ' extends along the central longitudinal axis of bolt 4.One end of cooling vapour arm 2 is connected to the female pipe 1 of cooling vapour, and its other end is connected to the upper end of through hole 6 '.From the female pipe 1 of cooling steam flow supercooling vapour that cooling gas resources flows out, then flow through cooling vapour arm 2, through hole 6 ', hole 7 successively, finally flow out from hole 7, thus achieve and cool from inside to bolt 4.
Fig. 4 illustrates flexible program according to a second embodiment of the present invention.The difference of the flexible program shown in Fig. 4 and Fig. 3 is, the lower end of bolt 4, through after the first flange 5, is not be screwed in the second flange 5 ', and is through the second flange 5 ' and is tightened on the second flange 5 ' by another nut 3 '.In this flexible program, from the female pipe 1 of cooling steam flow supercooling vapour that cooling gas resources flows out, then flow through cooling vapour arm 2 successively and be arranged on bolt 4 inner and along the through hole 6 of the longitudinal extension of bolt 4 ", finally direct from through hole 6 " lower end flow out.Therefore, without the need to arranging the hole 7 be communicated with the lower end of through hole 6 ' again in the second flange 5 '.Preferably, through hole 6 " extend along the central longitudinal axis of bolt 4.
Fig. 5 and Fig. 6 illustrates cooling system according to a third embodiment of the present invention.As shown in Figure 5 and Figure 6, the lower end of bolt 4 is passed the first flange 5 and is screwed in the second flange 5 ', and the upper end of bolt 4 is tightened on the first flange 5 by nut 3, thus the first flange 5 and the second flange 5 ' is tightened together.Cooling system according to a third embodiment of the present invention comprises cooling gas resources (not shown) and is connected to the first conduit 1 ' of cooling gas resources.First conduit 1 ' is arranged on the surface adjacent with the second flange 5 ' of the first flange 5.This cooling system also comprise be arranged in the first flange 5 be communicated with the first conduit 1 ' and around bolt 4 along the second conduit 8 of the longitudinal extension of bolt 4.Second conduit 8 is preferably the cylindrical hole around bolt 4, and the diameter of this cylindrical hole is greater than the diameter of bolt 4, there is the gap passed through for cooling vapour between the second conduit 8 and bolt 4.Further, the diameter of this cylindrical hole should be less than the maximum transverse size of nut 3, to guarantee that nut 3 can be tightened on the first flange 5.Certainly, the second conduit 8 also can adopt any suitable form, as long as there is the gap passed through for cooling vapour between the second conduit 8 and bolt 4.This cooling system can also comprise the 3rd conduit 9 be communicated with external environment condition with the second conduit 8.3rd conduit 9 is such as the form of the circular groove of the end being arranged on the second conduit 8, and this circular groove has the diameter of the maximum transverse size being greater than nut 3 and circumferentially extends in the scope being less than 360 degree.Such as, circular groove circumferentially 270 degree.Certainly, also it is contemplated that the 3rd conduit 9 of other any suitable form, as long as guarantee that cooling vapour can flow out via the 3rd conduit 9 and nut 3 can be tightened on the first flange 5.
In third embodiment of the invention, cooling gas resources can be the through-flow downstream of steam turbine.In this case, the first conduit 1 ' can be used as cooling vapour mother pipe.Cooling vapour from the through-flow downstream of steam turbine flows through the first conduit 1 ', space between the second conduit 8 and bolt 4 successively, flows out, to cool from outside to bolt 4 finally by by the 3rd conduit 9.Cooling gas resources also can be outside vapour source.Or, after being drawn by the gas in through-flow for steam turbine downstream, be used further to cooling system of the present invention.In this case, the cooling steam flow flowed out from cooling gas resources, through the female pipe 1 of cooling vapour, then flows through the first conduit 1 ', space between the second conduit 8 and bolt 4 successively, flows out finally by by the 3rd conduit 9.When utilizing fastening first flange 5 of multiple bolt 4 and the second flange 5 ', each bolt 4 is connected in parallel on the first conduit 1 ' as " female pipe ", which ensure that the cooling effect of each bolt is substantially identical.Further, this has also isolated the heat exchange between flange and bolt, makes the operating temperature of flange and bolt close, thus the situation of bolt strained increase not easily producing swollen difference and bring thus.
Fig. 7 and Fig. 8 illustrates flexible program according to a third embodiment of the present invention.The difference of the flexible program shown in Fig. 7 and Fig. 5 is, the lower end of bolt 4, through after the first flange 5, is not be screwed in the second flange 5 ', and is through the second flange 5 ' and is tightened on the second flange 5 ' by another nut 3 '.In this flexible program, the second conduit 8 ' extends on the whole thickness of the first flange 5 and the second flange 5 ', is respectively arranged with the 3rd conduit 9 and 9 ' at the two ends of the second conduit 8.This flexible program has the advantage identical with the 3rd embodiment.
In the embodiment of Fig. 5 to Fig. 8, shown in figure, the first conduit 1 ' is arranged in the first flange 5.But should be appreciated that, the first conduit 1 ' also can be arranged in the second flange 5 ', or be arranged in both the first flange 5 and the second flange 5 '.
Further, be also to be understood that bolt of the present invention is not limited to for fastening two flanges, but also may be used for fastening multiple flange.
Although the present invention discloses as above with preferred embodiment, the present invention is not defined in this.Any those skilled in the art, various change done without departing from the spirit and scope of the present invention and amendment, all should include in protection scope of the present invention, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (10)
1. one kind for cooling the cooling system of the bolt at high temperature worked, described bolt is for connecting two flanges, described cooling system comprises cooling gas resources, is connected to the cooling vapour of described cooling gas resources mother pipe and is connected to described cooling vapour mother manages and is arranged on the inside of described bolt and/or the cooling steam pipe road of outside, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling steam pipe road is flowed through, to cool described bolt.
2. cooling system according to claim 1, it is characterized in that, described cooling steam pipe road comprises and is arranged on the inner and blind hole of longitudinal extension along described bolt of described bolt, and comprise one end be connected to described cooling vapour mother pipe and the other end is inserted into the cooling vapour arm in described blind hole, the diameter of described blind hole is greater than the diameter of described cooling vapour arm, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling vapour arm is entered, the space between described blind hole and described cooling vapour arm is entered after described cooling vapour arm outflow, finally flow out from the aperture of described blind hole, to cool from inside to described bolt.
3. cooling system according to claim 2, is characterized in that, the tube wall of described cooling vapour arm has multiple leakage steam vent, and cooling vapour can escape to space between described blind hole and described cooling vapour arm via described leakage steam vent.
4. cooling system according to claim 1, it is characterized in that, described bolt does not run through one of them flange, described cooling steam pipe road comprises and is arranged on the inner and through hole of longitudinal extension along described bolt of described bolt, and comprise one end and be connected to described cooling vapour mother pipe and the other end is connected to the cooling vapour arm of one end of described through hole, and comprise and being arranged in one of them flange described and the hole be communicated with the other end of the described through hole of described bolt, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described cooling vapour arm is flowed through successively, the described through hole of described bolt and the described hole of one of them flange described, finally flow out from the described hole of one of them flange described, to cool from inside to described bolt.
5. cooling system according to claim 1, it is characterized in that, two flanges described in described bolt-through, described cooling steam pipe road comprises and is arranged on the inner and through hole of longitudinal extension along described bolt of described bolt, and comprise one end and be connected to described cooling vapour mother pipe and the other end is connected to the cooling vapour arm of one end of described through hole, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then the described through hole of described cooling vapour arm and described bolt is flowed through successively, finally flow out from the other end of described through hole, to cool from inside to described bolt.
6. cooling system according to claim 1, it is characterized in that, at least one flange is provided with the first conduit being connected to described cooling gas resources, to be communicated with described first conduit and around described bolt along the second conduit of the longitudinal extension of described bolt and the 3rd conduit that is communicated with external environment condition with described second conduit, gap is there is between described second conduit and described bolt, described first conduit is used as described cooling vapour mother pipe, described cooling steam pipe road comprises described second conduit and described 3rd conduit, the cooling steam flow flowed out from described cooling gas resources is through described first conduit, then the space between described second conduit and described bolt is flowed through, flow out finally by by described 3rd conduit, to cool from outside to described bolt.
7. cooling system according to claim 6, it is characterized in that, the surface adjacent with another flange of a described first conduit flange wherein extends perpendicular to described bolt, described second conduit extends at least one flange, the diameter of described second conduit is greater than the diameter of described bolt and is less than the maximum transverse size of the nut be screwed on described bolt, described 3rd conduit is arranged on the end of described second conduit, and described 3rd conduit has the diameter of the maximum transverse size being greater than described nut and circumferentially extends in the scope being less than 360 degree.
8. the cooling system according to any one of claim 2 to 5, it is characterized in that, at least one flange is provided with the first conduit being connected to the female pipe of described cooling vapour, to be communicated with described first conduit and around described bolt along the second conduit of the longitudinal extension of described bolt and the 3rd conduit that is communicated with external environment condition with described second conduit, gap is there is between described second conduit and described bolt, described cooling steam pipe road comprises described first conduit, described second conduit and described 3rd conduit, the cooling steam flow flowed out from described cooling gas resources is managed through described cooling vapour mother, then described first conduit is flowed through successively, space between described second conduit and described bolt, flow out finally by by described 3rd conduit, to cool from outside to described bolt.
9. cooling system according to any one of claim 1 to 7, is characterized in that, described two flanges are bolted together by multiple, and described multiple bolt shares described cooling vapour mother pipe.
10. cooling system according to any one of claim 1 to 7, is characterized in that, described bolt is for connecting the flange close to steam turbine admission part, and described cooling gas resources is outside vapour source or the through-flow downstream of steam turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981563.8A CN105507963A (en) | 2015-12-23 | 2015-12-23 | Cooling system for cooling bolt working at high temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981563.8A CN105507963A (en) | 2015-12-23 | 2015-12-23 | Cooling system for cooling bolt working at high temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105507963A true CN105507963A (en) | 2016-04-20 |
Family
ID=55716221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510981563.8A Pending CN105507963A (en) | 2015-12-23 | 2015-12-23 | Cooling system for cooling bolt working at high temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105507963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494632A (en) * | 2017-03-30 | 2019-11-22 | 通用电气公司 | The machanical fastener of increasing material manufacturing with cooling channels |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040093872A1 (en) * | 2002-08-16 | 2004-05-20 | Peter Tiemann | Internally coolable screw |
| CN2639529Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | High-pressure cylinder flange self-flow temp. regulator of steam turbine |
| CN201144880Y (en) * | 2007-12-28 | 2008-11-05 | 大亚湾核电运营管理有限责任公司 | Cooling device of large-scale hollow bolt |
| CN202418176U (en) * | 2011-12-22 | 2012-09-05 | 中航商用航空发动机有限责任公司 | Bolt |
| EP2644843A1 (en) * | 2012-03-27 | 2013-10-02 | Siemens Aktiengesellschaft | Screw cooling for a flow machine |
| CN104279189A (en) * | 2013-07-08 | 2015-01-14 | 阿尔斯通技术有限公司 | Pressure casing of a turbomachine |
-
2015
- 2015-12-23 CN CN201510981563.8A patent/CN105507963A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040093872A1 (en) * | 2002-08-16 | 2004-05-20 | Peter Tiemann | Internally coolable screw |
| CN2639529Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | High-pressure cylinder flange self-flow temp. regulator of steam turbine |
| CN201144880Y (en) * | 2007-12-28 | 2008-11-05 | 大亚湾核电运营管理有限责任公司 | Cooling device of large-scale hollow bolt |
| CN202418176U (en) * | 2011-12-22 | 2012-09-05 | 中航商用航空发动机有限责任公司 | Bolt |
| EP2644843A1 (en) * | 2012-03-27 | 2013-10-02 | Siemens Aktiengesellschaft | Screw cooling for a flow machine |
| CN104279189A (en) * | 2013-07-08 | 2015-01-14 | 阿尔斯通技术有限公司 | Pressure casing of a turbomachine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110494632A (en) * | 2017-03-30 | 2019-11-22 | 通用电气公司 | The machanical fastener of increasing material manufacturing with cooling channels |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU197487U1 (en) | TEE NODE FOR MIXING THE FLOWS OF THE NUCLEAR REACTOR BLOWING AND SUPPLY SYSTEM | |
| CN206943631U (en) | A kind of vacuum sealing tube telescopic with adaptive guard function | |
| CN205371095U (en) | Centrifugal blower rotor forced air cooling system | |
| CN105507963A (en) | Cooling system for cooling bolt working at high temperature | |
| CN103307401B (en) | Double water-cooled expansion joint | |
| CN109790756B (en) | Turbine exhaust structure with special design | |
| US20160215623A1 (en) | Steam turbine | |
| CN104152160A (en) | Dry quenching coke powder cooling device | |
| CN103953401B (en) | High-and-medium pressure cylinder of steam turbine for thermal power plant | |
| RU143541U1 (en) | FIRST CIRCUIT CIRCULATION HINGE OF THE FIRST CIRCUIT OF REACTOR PLANT TYPE VVER-1000 | |
| CN207213473U (en) | The inner pressed sleeve expansion joint of compound external insurance sleeve pipe | |
| CN210565230U (en) | Fan for heating reactor main container | |
| US20120228862A1 (en) | Temperature reducing flange for steam turbine inlets | |
| EP3135871B1 (en) | Back-pressure steam turbine and a system for combined production of electrical and thermal energy | |
| CN203375075U (en) | Double-layer water-cooled expansion joint | |
| CN204881238U (en) | Blind plate power remove device of nuclear power plant's condenser | |
| CN104180367A (en) | Slagging tube of fluidized-bed boiler | |
| KR20200011771A (en) | Bellows establishing method for Heat Recovery Steam Generators | |
| CN212614902U (en) | Airtight steam blocking device of steam turbine | |
| CN101772621B (en) | Steam supply for a steam turbine | |
| CN210069814U (en) | Gas boiler with expansion joint | |
| CN210034789U (en) | Buried steam pipeline with high-probability leakage point and protection device | |
| CN207634118U (en) | A kind of 630 DEG C of double reheat 660MW steam turbines of ultra supercritical | |
| CN204514128U (en) | A kind of gas heat-exchanger | |
| CN106761973A (en) | Individual layer welding cylinder structure is pressed in a kind of steam turbine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160420 |