CN102626851A - High pressure guide vane carrier ring processing technology - Google Patents
High pressure guide vane carrier ring processing technology Download PDFInfo
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- CN102626851A CN102626851A CN2012101303623A CN201210130362A CN102626851A CN 102626851 A CN102626851 A CN 102626851A CN 2012101303623 A CN2012101303623 A CN 2012101303623A CN 201210130362 A CN201210130362 A CN 201210130362A CN 102626851 A CN102626851 A CN 102626851A
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Abstract
The invention relates to a high pressure guide vane carrier ring processing technology. The processing technology comprises the following steps: 1) a surfacing planar slot is roughly machined by employing a milling mode, and then the surfacing planar slot is finely finished by employing a turning mode; 2) an intracavity planar slot and a steam extraction groove are processed through a numerical control program according to shapes of the intracavity planar slot and the steam extraction groove; 3) a deep blind hole is processed; and 4) a static blade groove is processed. By adopting the processing technology in the invention, a processing quality of the high pressure guide vane carrier ring is greatly improved, an efficiency of gas turbine combined cycle unit is directly improved, and then a generating efficiency is improved; and a precision of parts is effectively improved, a quality of products manufacturing is guaranteed, and a processing efficiency is improved, providing a stable working quality and a high working efficiency of the high pressure guide vane carrier ring under the conditions of high temperature, high speed, impact and shock, and simultaneously providing a high utilization rate, a long service life and a greatly reduced cost.
Description
Technical field
The present invention relates to a kind of high pressure guide blade carrier processing technology.
Background technology
The high pressure guide blade carrier is one of parts of combustion machine combination circulation steam turbine, is the combination circulation steam turbine core component, and its quality quality will directly influence the operating efficiency of Combined Cycle Unit, so guarantee that the quality of high pressure guide blade carrier is most important.The present invention's high pressure guide blade carrier employing to be processed is gone up second split and is divided body structure, and dark blind hole and the built-up welding planar slot of Φ 65 * 1800mm arranged on end face; Form by inner chamber planar slot, the groove that draws gas, 28 grades of stator blade grooves in the inner chamber.Concrete structure such as Fig. 1 are to shown in Figure 6, and the high pressure guide blade carrier comprises inner chamber, and inner chamber comprises a big inner chamber 1 and the little inner chamber 2 that is connected with big inner chamber 1, the dead in line of big inner chamber 1 and little inner chamber 2, and the internal diameter of big inner chamber 1 is greater than the internal diameter of little inner chamber 2; The outer face of big inner chamber 1 is provided with the inside blind deep hole 3 of level; The outer face of big inner chamber 1 also is provided with the built-up welding planar slot 4 that extends along circumferentially; Be provided with an inner chamber planar slot 5 between big inner chamber 1 and the little inner chamber 2, the bottom vertical of inner chamber planar slot 5 is in the axis of big inner chamber 1, and the two side of inner chamber planar slot 5 is connected with the chamber wall of big inner chamber 1 and the chamber wall of little inner chamber 2 respectively; The chamber wall of little inner chamber 2 is provided with the groove 6 that draws gas that extends along circumferentially; Be distributed with the stator blade groove 7 that circumferentially extend on many edges on the chamber wall of inner chamber; The end of dark blind hole 3 is communicated with a connection hole 9, and it is vertical with dark blind hole 3 to connect hole 9; Stator blade groove 7 is along the circumferential extension of the inner chamber of high pressure guide blade carrier; Stator blade groove 7 comprises a bottom periphery 71 and two sidewalls 72 that radially extend to the center along inner chamber; Bottom periphery 71 is provided with groove 73; Sidewall 72 is provided with has 74, two curved grooves 74 of a curved groove to be symmetrically distributed respectively on curved 74, two sidewalls 72 of groove.This high pressure guide blade carrier project organization is compact and processing request is very high, and its processing difficulties is:
1, the built-up welding planar slot of this high pressure guide blade carrier, deflection is big during built-up welding, and it is little that retaining is driven in the space, and axiality requires 0.02mm;
2, the processing of the inner chamber planar slot of this high pressure guide blade carrier and the groove difficulty of processing that draws gas are big; In process, the elongation that needs ram is greater than 1700mm, but the ram poor rigidity can influence machining accuracy, has certain difficulty in the processing; The grooved line that draws gas is complicated, and import is little, and difficult processing is high to the requirement of cutter;
3, on the outer face of the big inner chamber of high pressure guide blade carrier, the dark blind hole of 1800mm that two diameters are arranged is φ 65 needs processing, and will become the connection hole of 90 degree to be communicated with it, and difficulty is than higher in the time of processing;
4, this high pressure guide blade carrier inner chamber has 28 stator blade groove processing; The groove width of this stator blade groove is smaller, and the groove width size is merely 13.1mm, is minimum a kind of stator blade groove on the market so far; Processing requests such as 28 stator blade grooves of inner casing inner chamber machining accuracy, form and position tolerance are tight are high, form many processing difficulties.
Therefore; In general; Little, the various trough molded lines of this high pressure guide blade carrier diameter dimension quantity is many, wall thickness, poor rigidity, yielding; The built-up welding planar slot makes workpiece produce distortion under the effect of processing, built-up welding and heat in metal cutting easily, thereby influences the dimensional accuracy and the form accuracy of workpiece, makes workpiece size restive.Simultaneously, also to consider the processing of the dark blind hole of Φ 65 * 1800mm.Therefore need take into full account how to control thermal deformation, to guarantee that workpiece is adding the precision size in man-hour, reduce the distortion of workpiece in process, above-mentioned factor has caused the big problem of difficulty of processing of this high pressure guide blade carrier.
Summary of the invention
The technical problem that the present invention will solve provides a kind of high pressure guide blade carrier processing technology; This processing technology overcomes the limitation of prior art, can increase substantially the technological level of high pressure guide blade carrier, effectively raises part precision; Guarantee the product workmanship, improved working (machining) efficiency.
For solving the problems of the technologies described above; The high pressure guide blade carrier that high pressure guide blade carrier processing technology of the present invention is processed comprises inner chamber; Inner chamber comprises a big inner chamber and the little inner chamber that is connected with big inner chamber, the dead in line of big inner chamber and little inner chamber, and the internal diameter of big inner chamber is greater than the internal diameter of little inner chamber; The outer face of big inner chamber is provided with the inside blind deep hole of level; The outer face of big inner chamber also is provided with the built-up welding planar slot that extends along circumferentially; Be provided with an inner chamber planar slot between big inner chamber and the little inner chamber, the bottom vertical of inner chamber planar slot is in the axis of big inner chamber, and the two side of inner chamber planar slot is connected with the chamber wall of big inner chamber and the chamber wall of little inner chamber respectively; The chamber wall of little inner chamber is provided with the groove that draws gas that extends along circumferentially; Be distributed with the stator blade groove that circumferentially extend on many edges on the chamber wall of inner chamber; This processing technology comprises following steps:
1) adopts milling mode roughing built-up welding planar slot, adopt turning mode fine finishining built-up welding planar slot again;
2) according to the shape of inner chamber planar slot, through the numerical control program processing inner chamber planar slot and the groove that draws gas with the groove that draws gas;
3) processing deep blind-hole;
4) processing stator blade groove.
Wherein, the end of dark blind hole is communicated with a connection hole, and it is vertical to connect the Kong Yushen blind hole, and a kind of preferred scheme of the processing technology of dark blind hole may further comprise the steps:
1) sets up processing model according to the position of connecting the hole, editor's numerical control finder;
2) bore the position that a bullport is located dark blind hole;
3) bullport is expanded strand, accomplish roughing dark blind hole;
4) go deep into processing deep blind-hole, make dark blind hole be communicated with the connection hole;
5) the dark blind hole of fine finishining.
Wherein, The stator blade groove is along the circumferential extension of the inner chamber of high pressure guide blade carrier; The stator blade groove comprises a bottom periphery and two sidewalls that radially extend to the center along inner chamber, and the bottom periphery is provided with groove, and sidewall is provided with curved groove; A kind of preferred scheme of the processing technology of this stator blade groove comprises following steps:
1) shape, position and the size of many stator blade grooves of analysis are carried out Parameterized Programming;
2) to every stator blade groove, different parameters is set, the procedure of processing of every stator blade groove is following:
1. adopt the bottom periphery of fillet cutter roughing stator blade groove;
2. adopt two sidewalls of Plane cutter roughing stator blade groove;
3. adopt the groove on the periphery of fillet cutter roughing bottom;
4. adopt the bottom periphery of fillet cutter semifinishing stator blade groove, adopt two sidewalls of Plane cutter semifinishing stator blade groove again;
5. adopt the bottom periphery of fillet cutter fine finishining stator blade groove, adopt two sidewalls of Plane cutter fining-off stator blade groove again;
6. adopt the groove on the periphery of fillet cutter fine finishining bottom;
7. adopt the curved groove of elbow cutter roughing stator blade groove;
8. adopt two sidewalls of Plane cutter fine finishining stator blade groove;
9. adopt the curved groove of elbow cutter fine finishining stator blade groove.
Wherein the preferred construction of stator blade groove does, the curved groove of every stator blade groove and sidewall form a right angle and a fillet, and the elbow cutter comprises elbow bend cutter and fillet elbow cutter.To this structure, the 7. preferred scheme of the procedure of processing of stator blade groove can be divided into for two steps carries out, the right angle that the first step uses curved groove of elbow bend cutter roughing and sidewall to form earlier, and second step re-used the fillet of curved groove of fillet elbow cutter roughing and sidewall formation; To this structure, the 9. preferred scheme of the procedure of processing of stator blade groove can be divided into for two steps carries out, the right angle that the first step uses curved groove of elbow bend cutter fine finishining and sidewall to form earlier, and second step re-used the fillet of curved groove of fillet elbow cutter fine finishining and sidewall formation.
Another preferred version of curved groove processing does, a curved groove is arranged respectively on two sidewalls, and two curved grooves are symmetrically distributed, and two curved grooves adopt pair of curved elbow cutteves in the opposite direction to process respectively.
A kind of preferred construction of elbow bend cutter does; The elbow bend cutter comprises first knife bar and first cutter head that is positioned at the first knife bar end; First cutter head is vertical with first knife bar, first cutter head away from the outer surface of first knife bar be one with the surperficial vertical plane of first knife bar.
A kind of preferred construction of fillet elbow cutter does, fillet elbow cutter comprises second knife bar and second cutter head that is positioned at the second knife bar end, and second cutter head is vertical with second knife bar, and second cutter head is a bandy cambered surface away from the outer surface of second knife bar.
The processing technology of stator blade groove also can comprise step 3): the curved groove that adopts curved groove gage measuring stator blade groove.
A kind of preferred construction of curved groove measurer does; Curved groove measurer comprises a measurer main body; The two ends of measurer main body are respectively equipped with a go side and a not-go-end, and the edge of go side is provided with a circular arc, and the circular arc radian of go side is identical with the lower limit radian of curved groove; The edge of not-go-end is provided with a circular arc, and the circular arc radian of not-go-end is identical with the upper limit radian of curved groove.
Adopt unique processing process to this high pressure guide blade carrier, the frock of design special minimizes the machining deformation amount; Crudy and precision have been guaranteed; Improved the stability of high pressure guide blade carrier pressure, realized operating efficiency better, the advantage of its processing technology is:
1, open the little characteristics of shelves to built-up welding planar slot hardness height, the space of high pressure guide blade carrier, milling mode is adopted in roughing, has realized the processing of welding back exceptional hardness seal groove, has accelerated process velocity; The turning mode is adopted in fine finishining, has realized the axiality specification requirement, has guaranteed machining accuracy.
2, to this high pressure guide blade carrier inner chamber planar slot and draw gas grooved line complicacy, the little characteristics of import, consider the precedence of technology, realize complicated molded lines through optimizing numerical control program.
3, to the processing of dark blind hole, set up processing model to the position of connecting the hole earlier, consider technological method for processing, realize connecting the connection of Kong Yushen blind hole, guarantee crudy and progress.
4, to the processing of stator blade groove, because the size of this stator blade groove is minimum a kind of size on the market so far, the processing of stator blade groove is the processing difficulties of whole high pressure guide blade carrier.This technical scheme through following some solve the problems of the technologies described above:
1. processing technology adopts the technology thinking of roughing bottom periphery, roughing sidewall, roughing groove, semifinishing bottom periphery and sidewall, fine finishining bottom periphery, fining-off sidewall, fine finishining groove, the curved groove of roughing, fine finishining sidewall, the curved groove of fine finishining;
2. to the used cutter of processing technology, adopt special-purpose fillet cutter, Plane cutter, elbow cutter;
3. because shape, position and the size of the wire casing of each bar stator blade groove are all variant; Adopt Parameterized Programming, worked out a subprogram that general parameter is controlled, only need call same subprogram to each procedure; According to the concrete size of each groove, composing upward to parameter, different values gets final product;
4. to the measurement of the curved groove of stator blade groove, adopt special-purpose curved groove measurer, improved efficiency of measurement and process velocity.
After adopting the technical scheme of high pressure guide blade carrier processing technology of the present invention, the crudy of high pressure guide blade carrier is improved greatly, directly promoted combustion machine Combined Cycle Unit efficient, and then improved generating efficiency; Adopt this processing technology, also improved part precision effectively, guaranteed the product workmanship; Improved working (machining) efficiency; Make the high pressure guide blade carrier at high temperature, at a high speed, impact and the condition of vibrations under work quality stable, high efficiency can make stock utilization high simultaneously again; Long service life, cost descends significantly; This novel high pressure guide blade carrier processing technology provided by the invention has obtained tangible economic benefit, has reduced manufacturing cost, has expanded market.
Description of drawings
The structural representation of the high pressure guide blade carrier that Fig. 1 is suitable for for high pressure guide blade carrier processing technology of the present invention.
Fig. 2 is the enlarged diagram of the built-up welding planar slot of high pressure guide blade carrier shown in Figure 1.
Fig. 3 is the local enlarged diagram of high pressure guide blade carrier shown in Figure 1.
Fig. 4 is the dark blind hole and the generalized section of connecting the hole of high pressure guide blade carrier shown in Figure 1.
Fig. 5 is the structural representation of the stator blade groove of high pressure guide blade carrier shown in Figure 1.
Fig. 6 is a kind of schematic flow sheet of the specific embodiment of the processing technology of stator blade groove shown in Figure 5.
Fig. 7 is the structural representation of a kind of specific embodiment of fillet cutter used in the processing technology of stator blade groove shown in Figure 6.
Fig. 8 is the structural representation of a kind of specific embodiment of Plane cutter used in the processing technology of stator blade groove shown in Figure 6.
Fig. 9 is the structural representation of the another kind of specific embodiment of Plane cutter used in the processing technology of stator blade groove shown in Figure 6.
Figure 10 is the structural representation of a kind of specific embodiment of elbow bend cutter used in the processing technology of stator blade groove shown in Figure 6.
Figure 11 is the vertical view of elbow bend cutter shown in Figure 10.
Figure 12 is the structural representation of a kind of specific embodiment of fillet elbow cutter used in the processing technology of stator blade groove shown in Figure 6.
Figure 13 is the vertical view of fillet elbow cutter shown in Figure 12.
Figure 14 is the structural representation of curved groove measurer of the curved groove of stator blade groove shown in Figure 5.
The specific embodiment
Below in conjunction with accompanying drawing, specific embodiments of the invention is done further explain.
To shown in Figure 5, the present invention's high pressure guide blade carrier to be processed comprises inner chamber like Fig. 1, and inner chamber comprises a big inner chamber 1 and the little inner chamber 2 that is connected with big inner chamber 1, the dead in line of big inner chamber 1 and little inner chamber 2, and the internal diameter of big inner chamber 1 is greater than the internal diameter of little inner chamber 2; The outer face of big inner chamber 1 is provided with two φ 65mm, the degree of depth is the inside blind deep hole 3 of level of 1800mm; The outer face of big inner chamber 1 also is provided with the built-up welding planar slot 4 that extends along circumferentially; Be provided with an inner chamber planar slot 5 between big inner chamber 1 and the little inner chamber 2, the bottom vertical of inner chamber planar slot 5 is in the axis of big inner chamber 1, and the two side of inner chamber planar slot 5 is connected with the chamber wall of big inner chamber 1 and the chamber wall of little inner chamber 2 respectively; The chamber wall of little inner chamber 2 is provided with the groove 6 that draws gas that extends along circumferentially; Be distributed with the stator blade groove 7 that circumferentially extend on many edges on the chamber wall of inner chamber; The end of dark blind hole 3 is communicated with a connection hole 9, and it is vertical with dark blind hole 3 to connect hole 9; Stator blade groove 7 is along the circumferential extension of the inner chamber of high pressure guide blade carrier; Stator blade groove 7 comprises a bottom periphery 71 and two sidewalls 72 that radially extend to the center along inner chamber; Bottom periphery 71 is provided with groove 73; Sidewall 72 is provided with has 74, two curved grooves 74 of a curved groove to be symmetrically distributed respectively on curved 74, two sidewalls 72 of groove.
A kind of specific embodiment of high pressure guide blade carrier processing technology of the present invention comprises following steps:
1) adopts milling mode roughing built-up welding planar slot 4, adopt turning mode fine finishining built-up welding planar slot 4 again;
2) according to the shape of inner chamber planar slot 5, through the numerical control program processing inner chamber planar slot 5 and the groove 6 that draws gas with the groove 6 that draws gas;
3) processing deep blind-hole 3;
4) processing stator blade groove 7.
A kind of specific embodiment of the processing technology of dark blind hole 3 may further comprise the steps:
1) sets up processing model according to the position of connecting hole 9, editor's numerical control finder;
2) bore the position that a bullport is located dark blind hole 3;
3) bullport is expanded strand, accomplish the roughing to dark blind hole 3, bullport is of a size of φ 65
+ 0.1Mm * 102mm;
4) go deep into processing deep blind-hole 3, make dark blind hole 3 be communicated with the connection hole;
5) the dark blind hole 3 of fine finishining.
As shown in Figure 6, a kind of specific embodiment of the processing technology of stator blade groove 7 comprises following steps:
1) shape, position and the size of many stator blade grooves 7 of analysis are carried out Parameterized Programming;
2) to every stator blade groove 7, different parameters is set, the procedure of processing of every stator blade groove 7 is following:
1. adopt the bottom periphery 71 of fillet cutter 10 roughing stator blade grooves 7, bottom periphery 71 is reserved the surplus of 0.4mm, and the release groove internal stress reduces the finishing post-construction deformation, guarantees that the size of the bottom periphery 71 of next step fine finishining stator blade groove 7 is accurately processed;
2. adopt two sidewalls 72 of Plane cutter 11 roughing stator blade grooves 7, sidewall 72 is reserved the surplus of 1mm, and the release groove internal stress reduces the finishing post-construction deformation, like the cut lengths of two sidewalls 72 deviation is arranged, and can in subsequent processing, compensate;
3. adopt the groove 73 on the periphery 71 of fillet cutter 10 roughing bottom, groove 73 is reserved the surplus of 0.25mm, and the center of Primary Location stator blade groove discharges the stress in the groove, reduces the finishing post-construction deformation, guarantees the crudy requirement;
4. adopt the bottom periphery 71 of fillet cutter 10 semifinishing stator blade grooves 7; Adopt two sidewalls 72 of Plane cutter 11 semifinishing stator blade grooves 7 again, allowance is 0.5mm, accurately at the bottom of the locating slot; Guarantee the shape of stator blade groove; Discharge the stress in the stator blade groove, reduce the finishing post-construction deformation, for the curved groove 74 of processing two sidewalls 72 is prepared;
5. adopt the bottom periphery 71 of fillet cutter 10 fine finishining stator blade grooves 7; Adopt two sidewalls 72 of Plane cutter 11 fining-off stator blade grooves 7 again; The allowance of sidewall 72 is 0.2mm, accurately at the bottom of the locating slot, guarantees the axiality requirement of stator blade groove; Fine finishining bottom periphery 71 will be processed two for next step and prepare with the curved groove 74 of sidewall 72;
6. adopt the groove 73 on the periphery 71 of fillet cutter 10 fine finishining bottoms, accurately locate stator blade groove center position, the sidewall of having processed in the upper track preface 72 guarantees the size of groove 73 as the feed benchmark;
7. two curved grooves 74 adopt pair of curved elbow cutter in the opposite direction to process respectively; Wherein the procedure of processing of each curved groove was divided into for two steps, and the first step uses elbow bend cutter 12 roughing and fining-off to bend the right angle of groove 74 and sidewall 72 formation earlier, and second step re-used the fillet of 13 roughing of fillet elbow cutter and curved groove 74 of fining-off and sidewall 72 formation; Allowance is 0.2mm; The release groove internal stress reduces the finishing post-construction deformation as far as possible, guarantees the size of the curved groove 74 of next step fine finishining;
8. adopt two sidewalls 72 of Plane cutter 11 fine finishining stator blade grooves 7; On the basis of the sidewall of having processed 72, the accurate size of bottom, location periphery 71 and sidewall 72 adds and must guarantee property unanimous between the higher and lower levels man-hour; Accurately guarantee the molded lines of the sidewall 72 of stator blade groove 7, guarantee its perpendicularity requirement; The size of fine finishining sidewall 72 is bent groove 74 up and down for processing and is prepared then;
9. two curved grooves 74 adopt pair of curved elbow cutter in the opposite direction to process respectively; Wherein the procedure of processing of each curved groove was divided into for two steps; The right angle that the first step uses curved groove 74 of elbow bend cutter 12 fine finishining and sidewall 72 to form earlier; Second step re-used curved groove 74 of fillet elbow cutter 13 fine finishining and the fillet that sidewall 72 forms, and guaranteed dimensional accuracy;
3) adopt curved groove measurer 14 to measure the curved groove 74 of stator blade groove 7.
As shown in Figure 7, the structure of a kind of specific embodiment of fillet cutter 10 is: fillet cutter 10 comprises that the 3rd knife bar 101 and the blade that is positioned at the 3rd cutter head 102, the three cutter heads 102 of the 3rd knife bar 101 ends are the ball mouth.
Like Fig. 8 and shown in Figure 9; The structure of a kind of specific embodiment of Plane cutter 11 is: Plane cutter 11 comprises four blade bar 111 and the four blade head 112 that is positioned at four blade bar 111 ends; Four blade head 112 edgewise bends to four blade bar 111, the blade of four blade head 112 can be flat mouthful.
Like Figure 10 and shown in Figure 11; The structure of a kind of specific embodiment of elbow bend cutter is: the elbow bend cutter comprises first knife bar 121 and first cutter head 122 that is positioned at first knife bar, 121 ends; First cutter head 122 is vertical with first knife bar 121, first cutter head 122 away from the outer surface of first knife bar 121 be one with the surperficial vertical plane of first knife bar 121.
Like Figure 12 and shown in Figure 13; The structure of a kind of specific embodiment of fillet elbow cutter is: fillet elbow cutter 13 comprises second knife bar 131 and second cutter head 132 that is positioned at second knife bar, 131 ends; Second cutter head 132 is vertical with second knife bar 131, and second cutter head 132 is a bandy cambered surface away from the outer surface of second knife bar 131.
Shown in figure 14; The structure of a kind of specific embodiment of curved groove measurer is: curved groove measurer 14 comprises a measurer main body 141; The two ends of measurer main body 141 are respectively equipped with a go side 142 and a not-go-end 143, and the edge of go side 142 is provided with a circular arc, and the circular arc radian of go side 142 is identical with the lower limit radian of curved groove 74; The edge of not-go-end 143 is provided with a circular arc, and the circular arc radian of not-go-end 143 is identical with the upper limit radian of curved groove 74.
After adopting the technical scheme of high pressure guide blade carrier processing technology of the present invention, the crudy of high pressure guide blade carrier is improved greatly, directly promoted combustion machine Combined Cycle Unit efficient, and then improved generating efficiency; Adopt this processing technology, also improved part precision effectively, guaranteed the product workmanship; Improved working (machining) efficiency; Make the high pressure guide blade carrier at high temperature, at a high speed, impact and the condition of vibrations under work quality stable, high efficiency can make stock utilization high simultaneously again; Long service life, cost descends significantly; This novel high pressure guide blade carrier processing technology provided by the invention has obtained tangible economic benefit, has reduced manufacturing cost, has expanded market.
More than the high pressure guide blade carrier processing technology that the embodiment of the invention provided has been carried out detailed introduction; For one of ordinary skill in the art; According to the thought of the embodiment of the invention, the part that on the specific embodiment and range of application, all can change, in sum; This description should not be construed as limitation of the present invention, and all any changes of making according to design philosophy of the present invention are all within protection scope of the present invention.
Claims (10)
1. high pressure guide blade carrier processing technology; Said high pressure guide blade carrier comprises inner chamber; Said inner chamber comprises a big inner chamber (1) and the little inner chamber (2) that is connected with said big inner chamber (1); The dead in line of said big inner chamber (1) and said little inner chamber (2), the internal diameter of said big inner chamber (1) is greater than the internal diameter of said little inner chamber (2); The outer face of said big inner chamber (1) is provided with the inside blind deep hole (3) of level; The outer face of said big inner chamber (1) also is provided with the built-up welding planar slot (4) that extends along circumferentially; Be provided with an inner chamber planar slot (5) between said big inner chamber (1) and the said little inner chamber (2); The bottom vertical of said inner chamber planar slot (5) is in the axis of said big inner chamber (1), and the two side of said inner chamber planar slot (5) is connected with the chamber wall of said big inner chamber (1) and the chamber wall of said little inner chamber (2) respectively; The chamber wall of said little inner chamber (2) is provided with the groove that draws gas (6) that extends along circumferentially; Be distributed with the stator blade groove (7) that circumferentially extend on many edges on the chamber wall of said inner chamber; This processing technology is characterised in that, comprises following steps:
1) adopts the milling mode said built-up welding planar slot of roughing (4), adopt the said built-up welding planar slot of turning mode fine finishining (4) again;
2) according to the shape of said inner chamber planar slot (5) and the said groove that draws gas (6), process said inner chamber planar slot (5) and the said groove that draws gas (6) through numerical control program;
3) processing said dark blind hole (3);
4) processing said stator blade groove (7).
2. high pressure guide blade carrier processing technology according to claim 1; It is characterized in that: the end of said dark blind hole (3) is communicated with a connection hole (9); Said connection hole (9) is vertical with said dark blind hole (3), and the processing technology of said dark blind hole (3) may further comprise the steps:
1) sets up processing model according to the position in said connection hole (9), editor's numerical control finder;
2) bore the position that a bullport is located said dark blind hole (3);
3) said bullport is expanded strand, accomplish roughing said dark blind hole (3);
4) deeply process said dark blind hole (3), make said dark blind hole (3) be communicated with said connection hole;
5) the said dark blind hole of fine finishining (3).
3. high pressure guide blade carrier processing technology according to claim 1; It is characterized in that: said stator blade groove (7) is along the circumferential extension of the inner chamber of said high pressure guide blade carrier; Said stator blade groove (7) comprises the sidewall (72) that radially extends to the center of a bottom periphery (71) and two said inner chambers in edge; Said bottom periphery (71) is provided with groove (73), and said sidewall (72) is provided with curved groove (74), and the processing technology of said stator blade groove (7) comprises following steps:
1) shape, position and the size of said many stator blade grooves of analysis (7) are carried out Parameterized Programming;
2) to every said stator blade groove (7), different parameters is set, the procedure of processing of said every stator blade groove (7) is following:
1. adopt the bottom periphery (71) of fillet cutter (10) the said stator blade groove of roughing (7);
2. adopt two sidewalls (72) of Plane cutter (11) the said stator blade groove of roughing (7);
3. adopt the groove (73) on fillet cutter (10) the roughing said bottom periphery (71);
4. adopt the bottom periphery (71) of fillet cutter (10) the said stator blade groove of semifinishing (7), adopt two sidewalls (72) of Plane cutter (11) the said stator blade groove of semifinishing (7) again;
5. adopt the bottom periphery (71) of fillet cutter (10) the said stator blade groove of fine finishining (7), adopt two sidewalls (72) of Plane cutter (11) the said stator blade groove of fining-off (7) again;
6. adopt the groove (73) on fillet cutter (10) the fine finishining said bottom periphery (71);
7. adopt the curved groove (74) of the said stator blade groove of elbow cutter roughing (7);
8. adopt two sidewalls (72) of Plane cutter (11) the said stator blade groove of fine finishining (7);
9. adopt the curved groove (74) of the said stator blade groove of elbow cutter fine finishining (7).
4. high pressure guide blade carrier processing technology according to claim 3; It is characterized in that: the curved groove (74) of said every stator blade groove (7) forms a right angle and a fillet with said sidewall (72); Said elbow cutter comprises elbow bend cutter (12) and fillet elbow cutter (13); The procedure of processing of said stator blade groove (7) 7. can be divided into two the step carry out; The right angle that first step elder generation's use elbow bend cutter (12) said curved groove of roughing (74) and said sidewall (72) form, second step re-used the fillet of fillet elbow cutter (13) said curved groove of roughing (74) and said sidewall (72) formation.
5. high pressure guide blade carrier processing technology according to claim 3; It is characterized in that: the curved groove (74) of said every stator blade groove (7) forms a right angle and a fillet with said side (72); Said elbow cutter comprises elbow bend cutter (12) and fillet elbow cutter (13); The procedure of processing of said stator blade groove (7) 9. can be divided into two the step carry out; The right angle that first step elder generation's use elbow bend cutter (12) said curved groove of fine finishining (74) and said sidewall (72) form, second step re-used the fillet of fillet elbow cutter (13) said curved groove of fine finishining (74) and said sidewall (72) formation.
6. according to each described high pressure guide blade carrier processing technology in the claim 3 to 5; It is characterized in that: a curved groove (74) is arranged respectively on said two sidewalls (72); Said two curved grooves (74) are symmetrically distributed, and said two curved grooves (74) adopt pair of curved elbow cutter in the opposite direction to process respectively.
7. according to each described high pressure guide blade carrier processing technology in the claim 4 to 5; It is characterized in that: said elbow bend cutter (12) comprises first knife bar (121) and is positioned at first cutter head (122) of said first knife bar (121) end; Said first cutter head (122) is vertical with said first knife bar (121), said first cutter head (122) away from the outer surface of said first knife bar (121) be one with the surperficial vertical plane of said first knife bar (121).
8. according to each described high pressure guide blade carrier processing technology in the claim 4 to 5; It is characterized in that: said fillet elbow cutter (13) comprises second knife bar (131) and is positioned at second cutter head (132) of said second knife bar (131) end; Said second cutter head (132) is vertical with said second knife bar (131), and said second cutter head (132) is a bandy cambered surface away from the outer surface of said second knife bar (131).
9. high pressure guide blade carrier processing technology according to claim 3 is characterized in that, the processing technology of said stator blade groove (7) also comprises step 3): adopt curved groove measurer (14) to measure the curved groove (74) of said stator blade groove (7).
10. high pressure guide blade carrier processing technology according to claim 9; It is characterized in that: said curved groove measurer (14) comprises a measurer main body (141); The two ends of said measurer main body (141) are respectively equipped with a go side (142) and a not-go-end (143); The edge of said go side (142) is provided with a circular arc; The circular arc radian of said go side (142) is identical with the lower limit radian of said curved groove (74), and the edge of said not-go-end (143) is provided with a circular arc, and the circular arc radian of said not-go-end (143) is identical with the upper limit radian of said curved groove (74).
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| CN201225872Y (en) * | 2008-06-27 | 2009-04-22 | 上海电气电站设备有限公司 | Tool for measuring steam turbine rotor T-type bucket root groove |
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| CN102310312A (en) * | 2011-06-17 | 2012-01-11 | 上海电气电站设备有限公司 | Machining technique of turbine blade ring |
| CN103052768A (en) * | 2010-07-30 | 2013-04-17 | 西门子公司 | Steam turbine and process for cooling such steam turbine |
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| CN101052782A (en) * | 2004-08-02 | 2007-10-10 | 西门子公司 | Steam turbine, and method for the operation of a steam turbine |
| EP2112334A1 (en) * | 2008-04-21 | 2009-10-28 | Siemens Aktiengesellschaft | Outer housing for a turbo engine |
| CN201225872Y (en) * | 2008-06-27 | 2009-04-22 | 上海电气电站设备有限公司 | Tool for measuring steam turbine rotor T-type bucket root groove |
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