CN210599116U - Steam turbine blade of repairing one's body and moving blade group that constitutes thereof - Google Patents
Steam turbine blade of repairing one's body and moving blade group that constitutes thereof Download PDFInfo
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- CN210599116U CN210599116U CN201921279414.7U CN201921279414U CN210599116U CN 210599116 U CN210599116 U CN 210599116U CN 201921279414 U CN201921279414 U CN 201921279414U CN 210599116 U CN210599116 U CN 210599116U
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Abstract
The utility model relates to a steam turbine blade of repairing one's body, include: blade body portion, root of leaf, shroud ring and boss. The lower end of the blade body part is fixedly connected with the upper end of the blade root part; the shroud ring is fixed at the upper end of the blade body, bosses are arranged at intervals at the upper end of the shroud ring, and the bosses are matched with the steam seal teeth; the blade root is set into a trapezoid shape with the length of the upper bottom larger than that of the lower bottom, the trapezoid where the side face of the blade root is located determines a second waist line through the upper bottom, the lower bottom and the first waist line, the first side line of the side face of the blade body part is connected with the first waist line, the second side line of the side face of the blade body part is connected with the second waist line, and the second side line is arranged on the extension line of the second waist line. The utility model also provides a turbine moving blade group is provided with at least one steam turbine blade of repairing one's body on this turbine moving blade group. The utility model provides a steam turbine blade of repairing one's body has excised the bellied structure that the side set up on the standard movable vane, has overcome the technical problem that is difficult to the installation that the arch that traditional standard movable vane was last aroused.
Description
Technical Field
The utility model relates to a steam turbine moving blade technical field, in particular to steam turbine blade of repairing one's body and moving blade group of constitution thereof.
Background
The blades are key parts of the steam turbine and mainly divided into moving blades and static blades, and the turbine blades are one of the finest and most important parts and need to bear the combined action of high temperature, high pressure, huge centrifugal force, steam exciting force, corrosion and vibration and water drop erosion in a wet steam area. For a conventional model, the moving blades are annularly arranged on the rotor; however, the types of the moving blades are various for the machine type with high rotation speed, but when the machine type is assembled, a standard moving blade cannot be installed on the rotor through a blade root groove, the structure of the standard moving blade is as shown in fig. 1, the side surface of the blade root of the standard moving blade is a trapezoidal structure, a section of protrusion 6 (curved surface) is arranged on the side surface (namely the thickness direction) of the blade body part of the standard moving blade, and the protrusion 6 causes great difficulty in installing the blade, thereby severely restricting the production and application of the steam turbine.
SUMMERY OF THE UTILITY MODEL
The utility model discloses be difficult to the technical problem of installation to the moving blade that exists among the prior art, provide a steam turbine blade of repairing one's body and the moving blade group of constitution thereof.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a steam turbine dressing blade comprising: a blade body part, a blade root part, a shroud ring and a boss; wherein: the lower end of the blade body part is fixedly connected with the upper end of the blade root part; the shroud ring is fixed at the upper end of the blade body, the bosses are arranged at the upper end of the shroud ring at intervals, and the bosses are matched with the steam seal teeth; the leaf root part side face is set to be in a trapezoid shape, the length of the upper bottom of the trapezoid shape is larger than that of the lower bottom of the trapezoid shape, the second waist line is determined by the trapezoid where the leaf root part side face is located through the upper bottom, the lower bottom of the trapezoid shape and the first waist line, the first edge line of the leaf body part side face is connected with the first waist line, the second edge line of the leaf body part side face is connected with the second waist line, and the second edge line is located on the extension line of the second waist line.
Further, the root of the leaf is a mushroom-type root.
Further, the blade root is provided with a pin hole, and the pin hole is used for penetrating through a pin to fix adjacent blades.
Furthermore, the blade body part, the blade root part, the shroud ring and the boss are made of stainless steel.
The utility model also provides a turbine moving blade group is provided with the steam turbine blade of repairing one's body on this turbine moving blade group.
The utility model provides a steam turbine blade of repairing one's body and moving blade that constitutes possesses following beneficial effect or advantage at least:
the utility model provides a steam turbine blade for repairing body, the lower end of the blade body part is fixedly connected with the upper end of the blade root part; the shroud ring is fixed in blade body portion upper end, and the shroud ring upper end interval is provided with the boss, and the boss cooperatees with the gland tooth. Compared with the traditional standard moving blade, the utility model provides a steam turbine blade of repairing one's body, the trapezoidal second waist line of going to the bottom, first waist line determination through the upper base, going to the bottom and first waist line at blade root side place, the first sideline and the first waist line of blade body side meet, and the second sideline and the second waist line of blade body side meet, and the second sideline is on the extension cord of second waist line. The protruding structure arranged on the upper side face of the standard moving blade is cut off, and the two side edges of the blade body part are respectively arranged on the extension lines of the two side edges of the blade root part, so that the flatness of the blade body part is improved, and the technical problem that the installation is difficult due to the protruding structure on the traditional standard moving blade can be solved. Additionally, the utility model provides a steam turbine blade of repairing one's body, boss and vapor seal tooth cooperate and form radial vapor seal, can reduce the level and leak gas in.
Drawings
FIG. 1 is a schematic structural view of a conventional standard moving blade according to an embodiment of the present invention;
FIG. 2 is a side view of a steam turbine blade according to an embodiment of the present invention;
fig. 3 is a front view of a steam turbine blade for repairing a body according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1-boss, 2-blade body part, 3-pin hole, 4-blade root part, 41-wheel groove, 42-wheel flange, 5-extension line, 6-bulge and 7-shroud ring.
Detailed Description
The utility model discloses be difficult to the technical problem of installation to the moving blade that exists among the prior art, provide a steam turbine blade of repairing one's body and the moving blade group of constitution thereof.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-3, embodiments of the present invention provide a steam turbine blade for repairing body, including: blade body 2, blade root 4, shroud 7 and boss 1. Wherein: the lower end of the blade body part 2 is fixedly connected with the upper end of the blade root part 4; the shroud ring 7 is fixed at the upper end of the blade body part 2, the upper end of the shroud ring 7 is provided with bosses 1 at intervals, and the bosses 1 are matched with the steam seal teeth. In practical application, the blade body 2, the blade root 4, the shroud 7 and the boss 1 are integrally manufactured and all made of stainless steel. The trapezoid at the side of the blade root part 2 determines a second waist line through the upper bottom, the lower bottom and the first waist line, the first side line of the side of the blade body part 2 is connected with the first waist line, the second side line of the side of the blade body part 2 is connected with the second waist line, and the second side line is arranged on the extension line 5 of the second waist line, so that the trimming blade with the trapezoid structure at the side of the blade body part 2 is formed. The side surface of the blade root part 4 and the side surface of the blade body part 2 are in smooth transition, so that the installation of the trimming blade is convenient. It should be noted that the trapezoid structure according to the embodiment of the present invention is in a trapezoid shape as a whole, and the corresponding detail position, for example, the joint of two sides, can be in a smooth transition at a certain angle.
In the embodiment of the present invention, referring to fig. 3, the blade root 4 is a mushroom-type blade root. The blade root 4 is provided with a root wheel groove 41, the root wheel groove 41 is open downwards, and the front and rear ends of the root wheel groove 41 are open, that is, the root wheel groove 41 is a groove with through front and rear ends and open ground, and the left and right groove surfaces of the root wheel groove 41 are respectively provided with a flange 42. The front and the back of the root body are respectively provided with a balance groove, and the balance grooves are arranged on the root body above the root wheel groove 41 and/or the balance grooves are arranged on the corresponding root body at the middle upper part of the root wheel groove 41. The blade root 4 is provided with a pin hole 3, and the pin hole 3 is used for penetrating through a pin to fix an adjacent moving blade and is fixedly connected with the adjacent moving blade; the shape of the pin hole 3 matches the shape of the pin, and the pin hole 3 is circular in the embodiment.
Additionally, the embodiment of the utility model provides a still provide a turbine moving blade group, be provided with a steam turbine blade of repairing one's body on this turbine moving blade group. The utility model provides a steam turbine moving vane group is when installing the moving blade, at first installs the moving blade of various specifications on the rotor, installs the side of the leaf body 2 of this embodiment of repairing and sets up to isosceles trapezoid shape, embedding that can be convenient to the mounted position who corresponds at last.
The embodiment of the utility model provides a steam turbine blade of repairing one's body possesses following beneficial effect or advantage at least:
the lower end of the blade body part of the steam turbine blade for repairing the body provided by the embodiment of the utility model is fixedly connected with the upper end of the blade root part; the shroud ring is fixed in blade body portion upper end, and the shroud ring upper end interval is provided with the boss, and the boss cooperatees with the gland tooth. Compared with the traditional standard moving blade, the utility model provides a steam turbine blade of repairing one's body, the trapezoidal second waist line of going to the bottom, first waist line determination through the upper base, going to the bottom and first waist line at blade root side place, the first sideline and the first waist line of blade body side meet, and the second sideline and the second waist line of blade body side meet, and the second sideline is on the extension cord of second waist line. The protruding structure arranged on the upper side face of the standard moving blade is cut off, and the two side edges of the blade body part are respectively arranged on the extension lines of the two side edges of the blade root part, so that the flatness of the blade body part is improved, and the technical problem that the installation is difficult due to the protruding structure on the traditional standard moving blade can be solved. Additionally, the utility model provides a steam turbine blade of repairing one's body, boss and vapor seal tooth cooperate and form radial vapor seal, can reduce the level and leak gas in.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (5)
1. A steam turbine blade for modifying the body, comprising: a blade body part, a blade root part, a shroud ring and a boss; wherein: the lower end of the blade body part is fixedly connected with the upper end of the blade root part; the shroud ring is fixed at the upper end of the blade body, the bosses are arranged at the upper end of the shroud ring at intervals, and the bosses are matched with the steam seal teeth; the side surface of the leaf root part is set to be in a trapezoid shape, the length of the upper bottom of the trapezoid shape is larger than that of the lower bottom of the trapezoid shape, the second waist line is determined by the trapezoid where the side surface of the leaf root part is located through the upper bottom, the lower bottom of the trapezoid shape and the first waist line, the first side line of the side surface of the leaf body part is connected with the first waist line, the second side line of the side surface of the leaf body part is connected with the second waist line, and the second side line is located on the extension line of the second waist line.
2. The steam turbine bidet blade of claim 1, wherein the root portion is a mushroom-type root.
3. The turbine bidet blade of claim 1 or 2, wherein the root portion of the blade is provided with a pin hole for fixing an adjacent blade by passing a pin therethrough.
4. The steam turbine bidet blade of claim 1 or 2, wherein the body portion, the root portion, the shroud, and the boss are made of stainless steel.
5. A steam turbine rotor blade assembly characterized in that the steam turbine rotor blade assembly is provided with the steam turbine casing blade of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279414.7U CN210599116U (en) | 2019-08-08 | 2019-08-08 | Steam turbine blade of repairing one's body and moving blade group that constitutes thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921279414.7U CN210599116U (en) | 2019-08-08 | 2019-08-08 | Steam turbine blade of repairing one's body and moving blade group that constitutes thereof |
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| CN210599116U true CN210599116U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921279414.7U Active CN210599116U (en) | 2019-08-08 | 2019-08-08 | Steam turbine blade of repairing one's body and moving blade group that constitutes thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454233A (en) * | 2019-08-08 | 2019-11-15 | 中国长江动力集团有限公司 | A kind of steam turbine is cultivated one's moral character the movable vane piece group of blade and its composition |
-
2019
- 2019-08-08 CN CN201921279414.7U patent/CN210599116U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110454233A (en) * | 2019-08-08 | 2019-11-15 | 中国长江动力集团有限公司 | A kind of steam turbine is cultivated one's moral character the movable vane piece group of blade and its composition |
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