CN212177239U - Upper end wall connecting structure of power turbine of medium and small combustion engines for power generation - Google Patents
Upper end wall connecting structure of power turbine of medium and small combustion engines for power generation Download PDFInfo
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- CN212177239U CN212177239U CN202021122809.9U CN202021122809U CN212177239U CN 212177239 U CN212177239 U CN 212177239U CN 202021122809 U CN202021122809 U CN 202021122809U CN 212177239 U CN212177239 U CN 212177239U
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Abstract
A connecting structure for the upper end wall of a power turbine of a medium and small gas turbine for power generation belongs to the field of gas turbine power turbines. The utility model discloses a simple and easy connection structure has improved power turbine's progression, and then has improved power turbine's circulation efficiency. The utility model discloses a changeover portion cylinder body, power turbine cylinder body and air discharge cylinder body, the changeover portion cylinder body passes through first bolted connection with the power turbine cylinder body, and the other end and the air discharge cylinder body of power turbine cylinder body pass through second bolted connection. The utility model discloses simple structure, the dismouting and the maintenance of being convenient for, and effectively improved power turbine's circulation efficiency, increased power turbine's progression.
Description
Technical Field
The utility model relates to a middle and small combustion engine power turbine upper end wall connection structure for electricity generation belongs to the gas power turbine field.
Background
At present, for small and medium-sized gas turbine power generation units, the number of stages is generally more than or equal to 3, an effective method for improving the cycle efficiency is to improve the number of stages of a power turbine, the improvement of the turbine efficiency not only needs advanced blade design, but also needs reasonable design of an upper end wall and a connecting structure thereof, and for small and medium-sized gas turbine units, the upper end wall and the connecting structure of the power turbine of the small and medium-sized gas turbines for power generation are not provided at present.
In view of the above, there is a need for a reasonable upper end wall and connecting structure of medium and small gas power turbines for power generation, which is used for increasing the number of stages of the power turbines.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reasonable middle and small gas power turbine upper end wall and connection structure are used for improving power turbine's circulation efficiency, the utility model discloses a "middle and small gas turbine power turbine upper end wall connection structure for electricity generation". A brief summary of the present invention is provided below in order to provide a basic understanding of some aspects of the present invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to identify key or critical elements of the invention or to delineate the scope of the invention.
The technical scheme of the utility model:
the upper end wall connecting structure of the power turbine of the medium and small gas turbine for power generation comprises a transition section cylinder body, a power turbine cylinder body and an exhaust cylinder body, wherein the transition section cylinder body is connected with the power turbine cylinder body through a first bolt, and the other end of the power turbine cylinder body is connected with the exhaust cylinder body through a second bolt;
the first-stage stationary blades are arranged on the transition section cylinder body, the first-stage movable blade retaining ring is connected with the transition section cylinder body, and the first-stage movable blades are connected with the first-stage movable blade retaining ring;
the upper end wall of the second-stage stationary blade is connected with the power turbine cylinder body, the second-stage movable blade retaining ring is connected with the power turbine cylinder body, the second-stage movable blade is placed below the second-stage movable blade retaining ring, the upper end wall of the third-stage stationary blade is connected with the power turbine cylinder body, the third-stage movable blade retaining ring is connected with the power turbine cylinder body, the first honeycomb sealing structure is installed on the third-stage movable blade retaining ring, the third-stage movable blade is placed below the third-stage movable blade retaining ring, the upper end wall of the fourth-stage stationary blade is connected with the power turbine cylinder body, the fourth-stage movable blade retaining ring is connected with the power turbine cylinder body, the second honeycomb sealing structure is installed on the fourth-stage movable blade retaining ring, and the fourth-stage movable blade is placed below the fourth-stage movable blade retaining ring;
furthermore, the one end of first order stationary blade has first connecting portion, has first arch and second connecting portion on the changeover portion cylinder body, and the one end of first order movable blade retaining ring has first draw-in groove first connecting portion and first arch and installs in first draw-in groove, and the other end of first order movable blade retaining ring has the second draw-in groove, and the second connecting portion on the changeover portion cylinder body are installed in the second draw-in groove.
Furthermore, one end of the second-stage stationary blade is provided with a seventh protrusion, the second-stage stationary blade is connected with the power turbine cylinder body through the seventh protrusion, the other end of the second-stage stationary blade is provided with a third connecting portion, the power turbine cylinder body is provided with a second protrusion, one end of the second-stage movable blade retaining ring is provided with a fourth clamping groove, and the third connecting portion and the second protrusion are installed in the fourth clamping groove.
Furthermore, the other end of the second-stage movable blade retaining ring is provided with a fourth connecting portion, a third protrusion is arranged on the power turbine cylinder, one end of the third-stage stationary blade is provided with a fifth clamping groove, and the fourth connecting portion and the third protrusion are installed in the fifth clamping groove.
Furthermore, the other end of the third stage stationary blade is provided with a fifth connecting part, the power turbine cylinder body is provided with a fourth protrusion, one end of the third stage movable blade protective ring is provided with a sixth clamping groove, and the fifth connecting part and the fourth protrusion are installed in the sixth clamping groove.
Furthermore, the other end of the third-stage movable blade retaining ring is provided with a sixth connecting portion, the power turbine cylinder body is provided with a fifth protrusion, one end of the fourth-stage stationary blade is provided with a seventh clamping groove, and the sixth connecting portion and the fifth protrusion are installed in the seventh clamping groove.
Furthermore, the other end of the fourth stage stationary blade is provided with a seventh connecting part, the power turbine cylinder body is provided with a sixth protrusion, one end of the fourth stage movable blade protective ring is provided with an eighth clamping groove, and the seventh connecting part and the sixth protrusion are installed in the eighth clamping groove.
The utility model has the advantages that:
1. the upper end wall of the power turbine of the middle and small gas turbine has compact connecting structure and small number of connecting pieces, thereby effectively improving the pneumatic efficiency;
2. the utility model is suitable for the upper end wall structure of the power turbine for four-stage power generation, and is convenient for maintaining and replacing parts;
3. use the utility model discloses a power turbine upper end wall connection structure has effectively improved the life-span and the turbine efficiency of turbine jar.
Drawings
FIG. 1 is a general schematic diagram of an upper end wall connection structure of a power turbine of a medium and small gas turbine for power generation.
In the figure, 1-a first stage stationary blade, 1-a first connecting part, 2-1 a first bulge, 2-2 a second connecting part, 2-a transition section cylinder body, 4-a first stage movable blade protecting ring, 4-1-a first clamping groove, 4-2 a second clamping groove, 5-a first stage movable blade, 8-a first bolt, 10-a power turbine cylinder body, 10-1 a second bulge, 10-2 a third bulge, 10-3 a fourth bulge, 10-4 a fifth bulge, 10-5 a sixth bulge and 11-a second stage stationary blade. 11-1 third connection part, 11-2 seventh bump, 13-second stage movable blade retaining ring, 13-1 fourth clamping groove, 13-2 fourth connection part, 14-second stage movable blade, 16-third stage stationary blade, 16-1 fifth clamping groove, 16-2 fifth connection part, 18-third stage movable blade retaining ring, 18-1 sixth clamping groove, 18-2 sixth connection part, 19-first honeycomb sealing structure, 20-third stage movable blade, 22-fourth stage stationary blade, 22-1 seventh clamping groove, 22-2 seventh connection part, 24-fourth stage movable blade retaining ring, 24-1 eighth clamping groove, 25-second honeycomb sealing structure, 26-fourth stage movable blade, 28-exhaust cylinder body and 29-second bolt.
Detailed Description
In order to make the objects, solutions and advantages of the present invention more apparent, the present invention will be described with reference to the accompanying drawings. It should be understood that the description is intended to be exemplary, and not to limit the scope of the invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The first embodiment is as follows: the embodiment is described with reference to fig. 1, the upper end wall connecting structure of the power turbine of the small and medium-sized power generation engine of the embodiment comprises a transition section cylinder body 2, a power turbine cylinder body 10 and an exhaust cylinder body 28, wherein the transition section cylinder body 2 is connected with the power turbine cylinder body 10 through a first bolt 8, the other end of the power turbine cylinder body 10 is connected with the exhaust cylinder body 28 through a second bolt 29, and two ends of the power turbine cylinder body 10 are respectively connected with the transition section cylinder body 2 and the exhaust cylinder body 28 through bolts, so that the assembly, disassembly and maintenance are convenient;
the first-stage stationary blades 1 are arranged on the transition section cylinder body 2, the first-stage movable blade retaining ring 4 is connected with the transition section cylinder body 2, and the first-stage movable blades 5 are connected with the first-stage movable blade retaining ring 4;
the upper end wall of the second stage stationary blade 11 is connected with the power turbine cylinder 10, the second stage movable blade retaining ring 13 is connected with the power turbine cylinder 10, the second stage movable blade 14 is placed below the second stage movable blade retaining ring 13, the upper end wall of the third stage stationary blade 16 is connected with the power turbine cylinder 10, the third stage movable blade retaining ring 18 is connected with the power turbine cylinder 10, the first honeycomb sealing structure 19 is installed on the third stage movable blade retaining ring 18, the third stage movable blade 20 is placed below the third stage movable blade retaining ring 18, the upper end wall of the fourth stage stationary blade 22 is connected with the power turbine cylinder 10, the fourth stage movable blade retaining ring 24 is connected with the power turbine cylinder 10, the second honeycomb sealing structure 25 is installed on the fourth stage movable blade retaining ring 24, the fourth stage movable blade 26 is placed below the fourth stage movable blade retaining ring 24, the stage of the power turbine is improved by the fourth stage stationary blade and movable blade retaining ring installed on the transition cylinder 2 and the power turbine cylinder 10, the upper end wall of the power turbine with the structure is simple in structure and convenient to disassemble, assemble and maintain, the first honeycomb sealing structure 19 on the third-stage movable blade retaining ring 18 and the second honeycomb sealing structure 25 on the fourth-stage movable blade retaining ring 24 effectively reduce gaps and improve the pneumatic efficiency of the third-stage movable blade 20 and the fourth-stage movable blade 26;
the second embodiment is as follows: the embodiment is described by combining with the figure 1, the upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation of the embodiment, one end of the first-stage stationary blade 1 is provided with a first connecting part 1-1, the transition section cylinder body 2 is provided with a first protrusion 2-1 and a second connecting part 2-2, one end of the first-stage movable blade guard ring 4 is provided with a first clamping groove 4-1, the first connecting part 1-1 and the first protrusion 2-1 are installed in the first clamping groove 4-1, the other end of the first-stage movable blade guard ring 4 is provided with a second clamping groove 4-2, the second connecting part 2-2 on the transition section cylinder body 2 is installed in the second clamping groove 4-2, the first-stage stationary blade 1 is fixed on the transition section cylinder body 2 through the first connecting part 1-1, and the first clamping grooves 4-1 and the second clamping grooves 4-2 at the left end and the right end of the first-stage movable blade guard ring 4 are installed with the transition section cylinder body 2 in a matched.
The third concrete implementation mode: the embodiment is described with reference to fig. 1, the upper end wall connecting structure of a power turbine of a small and medium-sized power generation engine of the embodiment includes that one end of a second-stage stationary blade 11 is provided with a seventh protrusion 11-2, the second-stage stationary blade 11 is connected with a power turbine cylinder 10 through the seventh protrusion 11-2, the other end of the second-stage stationary blade 11 is provided with a third connecting part 11-1, the power turbine cylinder 10 is provided with a second protrusion 10-1, one end of a second-stage movable blade guard ring 13 is provided with a fourth clamping groove 13-1, and the third connecting part 11-1 and the second protrusion 10-1 are installed in the fourth clamping groove 13-1;
specifically, the other end of the second-stage movable blade retaining ring 13 is provided with a fourth connecting part 13-2, the power turbine cylinder 10 is provided with a third protrusion 10-2, one end of the third-stage stationary blade 16 is provided with a fifth clamping groove 16-1, and the fourth connecting part 13-2 and the third protrusion 10-2 are installed in the fifth clamping groove 16-1;
specifically, the other end of the third stage stationary blade 16 is provided with a fifth connecting part 16-2, the power turbine cylinder 10 is provided with a fourth protrusion 10-3, one end of the third stage movable blade guard ring 18 is provided with a sixth clamping groove 18-1, and the fifth connecting part 16-2 and the fourth protrusion 10-3 are installed in the sixth clamping groove 18-1;
specifically, the other end of the third-stage movable blade retaining ring 18 is provided with a sixth connecting part 18-2, the power turbine cylinder 10 is provided with a fifth bulge 10-4, one end of the fourth-stage stationary blade 22 is provided with a seventh clamping groove 22-1, and the sixth connecting part 18-2 and the fifth bulge 10-4 are installed in the seventh clamping groove 22-1;
specifically, the other end of the fourth stage stationary blade 22 has a seventh connecting portion 22-2, the power turbine cylinder 10 has a sixth protrusion 10-5, one end of the fourth stage movable blade guard ring 24 has an eighth slot 24-1, and the seventh connecting portion 22-2 and the sixth protrusion 10-5 are installed in the eighth slot 24-1.
This embodiment is only illustrative of the patent and does not limit the scope of protection thereof, and those skilled in the art can make modifications to its part without departing from the spirit of the patent.
Claims (7)
1. The utility model provides a middle and small combustion engine power turbine upper end wall connection structure for electricity generation which characterized in that: the device comprises a transition section cylinder body (2), a power turbine cylinder body (10) and an exhaust cylinder body (28), wherein the transition section cylinder body (2) is connected with the power turbine cylinder body (10) through a first bolt (8), and the other end of the power turbine cylinder body (10) is connected with the exhaust cylinder body (28) through a second bolt (29);
the first-stage stationary blades (1) are installed on the transition section cylinder body (2), the first-stage movable blade retaining ring (4) is connected with the transition section cylinder body (2), and the first-stage movable blades (5) are placed below the first-stage movable blade retaining ring (4);
the upper end wall of a second-stage stationary blade (11) is connected with a power turbine cylinder body (10), a second-stage movable blade guard ring (13) is connected with the power turbine cylinder body (10), a second-stage movable blade (14) is placed below the second-stage movable blade guard ring (13), the upper end wall of a third-stage stationary blade (16) is connected with the power turbine cylinder body (10), a third-stage movable blade guard ring (18) is connected with the power turbine cylinder body (10), a first honeycomb sealing structure (19) is installed on the third-stage movable blade guard ring (18), a third-stage movable blade (20) is placed below the third-stage movable blade guard ring (18), the upper end wall of a fourth-stage stationary blade (22) is connected with the power turbine cylinder body (10), the fourth-stage movable blade guard ring (24) is connected with the power cylinder body (10), a second honeycomb sealing structure (25) is installed on the fourth-stage movable blade guard ring (24), and a fourth-stage movable blade (26) is placed below the fourth-stage movable blade guard ring (24).
2. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 1, wherein: one end of the first-stage stationary blade (1) is provided with a first connecting portion (1-1), the transition section cylinder body (2) is provided with a first protrusion (2-1) and a second connecting portion (2-2), one end of the first-stage movable blade retaining ring (4) is provided with a first clamping groove (4-1), the first connecting portion (1-1) and the first protrusion (2-1) are installed in the first clamping groove (4-1), the other end of the first-stage movable blade retaining ring (4) is provided with a second clamping groove (4-2), and the second connecting portion (2-2) on the transition section cylinder body (2) is installed in the second clamping groove (4-2).
3. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 1, wherein: one end of the second-stage static blade (11) is provided with a seventh protrusion (11-2), the second-stage static blade (11) is connected with a power turbine cylinder body (10) through the seventh protrusion (11-2), the other end of the second-stage static blade (11) is provided with a third connecting part (11-1), the power turbine cylinder body (10) is provided with a second protrusion (10-1), one end of the second-stage movable blade guard ring (13) is provided with a fourth clamping groove (13-1), and the third connecting part (11-1) and the second protrusion (10-1) are installed in the fourth clamping groove (13-1).
4. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 3, wherein: the other end of the second-stage movable blade protective ring (13) is provided with a fourth connecting part (13-2), the power turbine cylinder body (10) is provided with a third protrusion (10-2), one end of the third-stage stationary blade (16) is provided with a fifth clamping groove (16-1), and the fourth connecting part (13-2) and the third protrusion (10-2) are installed in the fifth clamping groove (16-1).
5. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 4, wherein: the other end of the third stage stationary blade (16) is provided with a fifth connecting part (16-2), the power turbine cylinder body (10) is provided with a fourth protrusion (10-3), one end of the third stage movable blade protective ring (18) is provided with a sixth clamping groove (18-1), and the fifth connecting part (16-2) and the fourth protrusion (10-3) are installed in the sixth clamping groove (18-1).
6. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 5, wherein: the other end of the third-stage movable blade protective ring (18) is provided with a sixth connecting part (18-2), the power turbine cylinder body (10) is provided with a fifth bulge (10-4), one end of the fourth-stage stationary blade (22) is provided with a seventh clamping groove (22-1), and the sixth connecting part (18-2) and the fifth bulge (10-4) are installed in the seventh clamping groove (22-1).
7. The upper end wall connecting structure of the power turbine of the small and medium-sized combustion engine for power generation as claimed in claim 6, wherein: the other end of the fourth stage stationary blade (22) is provided with a seventh connecting part (22-2), the power turbine cylinder body (10) is provided with a sixth bulge (10-5), one end of the fourth stage movable blade protective ring (24) is provided with an eighth clamping groove (24-1), and the seventh connecting part (22-2) and the sixth bulge (10-5) are installed in the eighth clamping groove (24-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021122809.9U CN212177239U (en) | 2020-06-17 | 2020-06-17 | Upper end wall connecting structure of power turbine of medium and small combustion engines for power generation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021122809.9U CN212177239U (en) | 2020-06-17 | 2020-06-17 | Upper end wall connecting structure of power turbine of medium and small combustion engines for power generation |
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| Publication Number | Publication Date |
|---|---|
| CN212177239U true CN212177239U (en) | 2020-12-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021122809.9U Active CN212177239U (en) | 2020-06-17 | 2020-06-17 | Upper end wall connecting structure of power turbine of medium and small combustion engines for power generation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212177239U (en) |
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- 2020-06-17 CN CN202021122809.9U patent/CN212177239U/en active Active
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