CN210622869U

CN210622869U - Mounting bracket for turbine guide vane

Info

Publication number: CN210622869U
Application number: CN201921784158.7U
Authority: CN
Inventors: 陈燕
Original assignee: Changzhou Changhao Machinery Co ltd
Current assignee: Changzhou Changhao Machinery Co ltd
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-05-26
Anticipated expiration: 2029-10-22

Abstract

The utility model belongs to the technical field of the turbine spare part technique and specifically relates to an installing support for steam turbine guide vane, including steam turbine dish, support body and guide vane body, steam turbine dish upper surface has the bellied integrative structure arc bottom sprag strip that makes progress. The utility model discloses an installing support for steam turbine guide vane passes through the support body with guide vane body fixed mounting at steam turbine dish upper surface, utilize the arc bottom support strip of steam turbine dish upper surface, the spacing of arc top on the top surface in the support body and the vertical spacing of side direction of putting on the support body medial surface insert respectively corresponding position side direction assembly groove and guide vane body looks joint, the external screw thread pole of rotating at support body lower extreme comes the guide vane body to fix at steam turbine dish upper surface through elasticity limit nut, make guide vane loading and unloading simple and convenient, the structure after the installation is firm, application scope is more extensive.

Description

Mounting bracket for turbine guide vane

Technical Field

The utility model belongs to the technical field of the steam turbine spare part technique and specifically relates to an installing support for steam turbine guide vane.

Background

The guide vane of the steam turbine is an important component of the steam turbine, and the performance of the vane directly influences the operation performance of the steam turbine. And the turbine guide vane structure on the market at present is mostly integrative fixed knot structure, in case just can't load and unload and change the operation to its blade after production is accomplished, leads to its limitation very big, and application scope is more single.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problem that exists among the above-mentioned background art, provide an improved installing support that is used for steam turbine guide vane, solve steam turbine guide vane structure on the present market and mostly be integrative fixed knot structure, in case just can't load and unload and change the operation to its blade after the production is accomplished, lead to its limitation very big, problem that application scope is more single.

The utility model provides a technical scheme that its technical problem adopted is: a mounting support for a steam turbine guide vane comprises a steam turbine disc, a support body and a guide vane body, wherein an upward-convex integrated-structure arc-shaped bottom supporting strip is arranged on the upper surface of the steam turbine disc, a downward-convex integrated-structure arc-shaped top limiting strip is arranged on the inner top surface of the support body, an inward-convex integrated-structure longitudinal lateral limiting strip is arranged on the inner side surface of the support body, a lateral assembling groove matched with the arc-shaped bottom supporting strip, the arc-shaped top limiting strip and the longitudinal lateral limiting strip is formed in the outer side surface of the guide vane body, upper assembling blind holes for splicing the support body are formed in the two sides of the arc-shaped bottom supporting strip on the steam turbine disc, a bottom lower counter bore is formed in the position, corresponding to the upper assembling blind hole, of the lower surface of the steam turbine disc, an inner communication hole is formed between the upper assembling blind hole and the bottom counter bore, support body lower extreme have a bellied body structure external screw rod downwards, bottom sinkage downthehole portion be provided with elasticity limit nut, the support body insert through bottom external screw rod and correspond inside and the steam turbine dish fixed connection of position elasticity limit nut.

Furthermore, in order to reduce cost and facilitate production and assembly, the inner cross section of the upper assembly blind hole and the inner cross section of the bottom sinking hole are both in a regular hexagonal structure, and the inner cross section of the upper assembly blind hole and the inner cross section of the bottom sinking hole are the same in size.

Furthermore, in order to facilitate elastic limiting, the elastic limiting nut comprises an internal thread connecting pipe sleeved on the external thread rod through threads, a regular hexagon external limiting pipe positioned on the outer side of the internal thread connecting pipe, and a lateral reset elastic sheet elastically connecting the internal thread connecting pipe with the external limiting pipe.

Further, for elastic reset, the lateral surface of the internal thread connecting pipe and the inner lateral surface of the external limiting pipe are respectively provided with a lateral reset groove for fixing a lateral reset elastic sheet, and the lateral reset elastic sheet is inserted into the corresponding position through two ends and is elastically connected with the internal thread connecting pipe and the external limiting pipe in the lateral reset groove.

Furthermore, in order to improve the assembly stability, the lower end of the outer side surface of the support body is provided with a lateral limiting clamping groove matched with the upper assembly blind hole, and the lateral limiting clamping groove is of a non-circular structure.

Furthermore, for the cooperation is spacing, outside spacing pipe be connected with the female connection pipe and seted up inside spacing groove on the face, the female connection pipe through inserting inside spacing groove and outside spacing intraductal side looks joint.

The beneficial effects of the utility model are that, the utility model discloses an installing support for steam turbine guide vane passes through the support body with guide vane body fixed mounting at steam turbine dish upper surface, utilize the arc bottom support strip of steam turbine dish upper surface, indulge on the spacing strip in arc top and the support body medial surface of support body internal top surface and put the spacing strip in side direction and insert respectively corresponding position side direction assembly groove and guide vane body looks joint, the external screw thread pole of rotating at support body lower extreme comes to fix the guide vane body at steam turbine dish upper surface through elasticity limit nut, make guide vane loading and unloading simple and convenient, the structure after the installation is firm, application scope is more extensive.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a partial cross-sectional view of the upper assembly blind hole location of the present invention.

In the drawing, 1, a turbine disc, 2, a bracket body, 3, a guide vane body, 4, an arc bottom supporting strip, 5, an arc top limiting strip, 6, a longitudinal lateral limiting strip, 7, a lateral assembling groove, 8, an upper assembling blind hole, 9, a bottom sunken hole, 10, an internal communication hole, 11, an external threaded rod, 12, an internal threaded connecting pipe, 13, an external limiting pipe, 14, a lateral resetting elastic sheet, 15, a lateral resetting groove, 16, a lateral limiting clamping groove and 17, an internal limiting groove are arranged.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

The mounting bracket for the turbine guide vane shown in figures 1 and 2 comprises a turbine disc 1, a bracket body 2 and a guide vane body 3, wherein the upper surface of the turbine disc 1 is provided with an upward convex integral structure arc bottom support strip 4, the inner top surface of the bracket body 2 is provided with an downward convex integral structure arc top limit strip 5, the inner side surface of the bracket body 2 is provided with an inward convex integral structure longitudinal side limit strip 6, the outer side surface of the guide vane body 3 is provided with a side assembly groove 7 matched with the arc bottom support strip 4, the arc top limit strip 5 and the longitudinal side limit strip 6, the turbine disc 1 is provided with an upper assembly blind hole 8 for inserting the bracket body 2 at two sides of the arc bottom support strip 4, the lower surface of the turbine disc 1 is provided with a bottom lower counter bore 9 corresponding to the upper assembly blind hole 8, the interior of the turbine disc 1 is provided with an inner communication hole 10 between the upper assembly blind hole 8 and the bottom sinking hole 9, the lower end of the support body 2 is provided with an external thread rod 11 protruding downwards, an elastic limit nut is arranged inside the bottom sunken hole 9, and the support body 2 is inserted into the elastic limit nut at the corresponding position through the external thread rod 11 at the bottom and is fixedly connected with the steam turbine disc 1.

Further, in order to reduce the cost and facilitate the production and assembly, the inner cross section of the upper assembly blind hole 8 and the inner cross section of the bottom sinking hole 9 are both in a regular hexagonal structure, the inner cross section of the upper assembly blind hole 8 and the inner cross section of the bottom sinking hole 9 are the same in size, further, in order to facilitate elastic limiting, the elastic limiting nut comprises an internal thread connecting pipe 12 which is sleeved on the external thread rod 11 through threads, a regular hexagonal external limiting pipe 13 which is positioned outside the internal thread connecting pipe 12, and a lateral resetting elastic sheet 14 which elastically connects the internal thread connecting pipe 12 and the external limiting pipe 13, further, in order to elastically reset, lateral resetting grooves 15 for fixing the lateral resetting elastic sheet 14 are respectively arranged on the outer side surface of the internal thread connecting pipe 12 and the inner side surface of the external limiting pipe 13, the lateral resetting elastic sheet 14 is inserted into the lateral resetting grooves 15 at corresponding positions through two ends, further, in order to improve the assembly stability, the lower end of the outer side surface of the bracket body 2 is provided with a lateral limiting clamping groove 16 matched with the upper assembly blind hole 8, the lateral limiting clamping groove 16 is of a non-circular structure, further, in order to match limiting, the connecting surface of the outer limiting pipe 13 and the inner thread connecting pipe 12 is provided with an inner limiting groove 17, the inner thread connecting pipe 12 is clamped with the inner side surface of the outer limiting pipe 13 by inserting the inner limiting groove 17, the upper end of the outer side surface of the outer limiting pipe 13 is provided with a separation groove which is convenient to be separated from the inner side surface of the bottom sinking hole 9 when the outer limiting pipe 13 is pulled out, no gap exists between the outer side surface of the outer limiting pipe 13 and the inner side surface of the bottom sinking hole 9, and the limiting is convenient to control, the mounting bracket for the turbine guide vane of the utility, utilize the arc bottom support strip 4 of 1 upper surface of steam turbine dish, indulge on the spacing strip 6 of putting the side direction of arc top 5 on the top surface in the support body 2 and the 2 medial surfaces of support body on indulging respectively insert corresponding position side direction assembly groove 7 and guide blade body 3 looks joint, it fixes guide blade body 3 at 1 upper surface of steam turbine dish to rotate at the external screw thread pole 11 of 2 lower extremes of support body through elasticity limit nut, make guide blade loading and unloading simple and convenient, the structure after the installation is firm, application scope is more extensive.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a mounting bracket for steam turbine guide vane, includes steam turbine dish (1), support body (2) and guide vane body (3), characterized by: the upper surface of the steam turbine disc (1) is provided with an upward convex integrated structure arc bottom supporting strip (4), the inner top surface of the support body (2) is provided with a downward convex integrated structure arc top limiting strip (5), the inner side surface of the support body (2) is provided with an inward convex integrated structure longitudinal side limiting strip (6), the outer side surface of the guide vane body (3) is provided with a lateral assembling groove (7) matched with the arc bottom supporting strip (4), the arc top limiting strip (5) and the longitudinal side limiting strip (6), the steam turbine disc (1) is provided with an upper assembling blind hole (8) which is used for splicing the support body (2) and is positioned at two sides of the arc bottom supporting strip (4), and the lower surface of the steam turbine disc (1) is provided with a bottom lower counter bore (9) corresponding to the upper assembling blind hole (8), steam turbine dish (1) inside be located assembly blind hole (8) and bottom sink and seted up inside intercommunicating pore (10) between hole (9), support body (2) lower extreme external screw thread pole (11) of bellied body structure has downwards, bottom sink hole (9) inside be provided with elasticity limit nut, support body (2) insert through bottom external screw thread pole (11) and correspond inside and steam turbine dish (1) fixed connection of position elasticity limit nut.

2. A mounting bracket for a turbine guide vane according to claim 1 wherein: the inner cross section of the upper assembly blind hole (8) and the inner cross section of the bottom sinking hole (9) are both of a regular hexagonal structure, and the inner cross section of the upper assembly blind hole (8) and the inner cross section of the bottom sinking hole (9) are the same in size.

3. A mounting bracket for a turbine guide vane according to claim 1 wherein: the elastic limiting nut comprises an internal thread connecting pipe (12) sleeved on the external thread rod (11) in a threaded manner, a regular hexagon external limiting pipe (13) positioned on the outer side of the internal thread connecting pipe (12), and a lateral resetting elastic sheet (14) elastically connecting the internal thread connecting pipe (12) and the external limiting pipe.

4. A mounting bracket for a turbine guide vane according to claim 3 wherein: the lateral reset spring plate is characterized in that a lateral reset groove (15) used for fixing a lateral reset spring plate (14) is formed in the outer lateral surface of the internal thread connecting pipe (12) and the inner lateral surface of the external limiting pipe (13), and the lateral reset spring plate (14) is inserted into the corresponding position lateral reset groove (15) through two ends to be elastically connected with the internal thread connecting pipe (12) and the external limiting pipe (13).

5. A mounting bracket for a turbine guide vane according to claim 1 wherein: the lower end of the outer side surface of the bracket body (2) is provided with a lateral limiting clamping groove (16) matched with the upper assembly blind hole (8).

6. A mounting bracket for a turbine guide vane according to claim 3 wherein: the connection surface of the external limiting pipe (13) and the internal thread connecting pipe (12) is provided with an internal limiting groove (17), and the internal thread connecting pipe (12) is connected with the internal side surface of the external limiting pipe (13) in a clamped manner by inserting the internal limiting groove (17).