CN210738621U

CN210738621U - Steam turbine partition plate

Info

Publication number: CN210738621U
Application number: CN201921862372.XU
Authority: CN
Inventors: 王能; 蒋银娟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-06-12
Anticipated expiration: 2029-11-01

Abstract

The utility model discloses a steam turbine baffle, which comprises a separator body, baffle body includes the same and first plate body and the second plate body of mutual butt joint of structure, first plate body includes first baffle inner ring, first baffle outer loop and first stationary blade subassembly, first stationary blade subassembly includes inner shroud, peripheral area and sets up a plurality of stationary blades between inner shroud and peripheral area, be equipped with a plurality of along the circumference direction evenly distributed of inner shroud and with the interior draw-in groove that the stationary blade one-to-one set up on the lateral wall of inner shroud, be equipped with the outer draw-in groove that a plurality of and stationary blade one-to-one set up on the inside wall of peripheral area, the one end of stationary blade is pegged graft in the inner draw-in groove and is passed through the fix with screw, the other end of stationary blade is fixed to be pegged graft in outer draw-in groove and is passed through the fix with screw. The utility model has the advantages of reasonable design, the equipment is convenient and can change alone the stationary blade, avoids the stationary blade to damage and needs to change whole baffle and cause extravagant phenomenon.

Description

Steam turbine partition plate

Technical Field

The utility model relates to a power generation equipment technical field, concretely relates to steam turbine baffle.

Background

A steam turbine is a rotary power machine that converts the energy of steam into mechanical work, and is also called a steam turbine. Mainly used as a prime mover for thermal power generation. At present, a steam turbine generally used in the market generally comprises a rotor and a stator, wherein the stator comprises a cylinder, the cylinder is generally divided into a high-pressure cylinder, a medium-pressure cylinder and a low-pressure cylinder by a partition plate, and the high-pressure cylinder and the medium-pressure cylinder are generally of a double-cylinder structure, namely, are divided into an inner bar and an outer cylinder. The rotor includes a main shaft, an impeller (for mounting the moving blades and transmitting the torque of the moving blades to the main shaft), a moving blade cascade, and a coupling (for connecting each rotor of the steam turbine and the engine rotor and transmitting the torque on the rotor). The turbine blades include moving blades and stationary blades (also called nozzle blades), and the moving blades are mounted on a rotor impeller (impulse turbine) or a rotary drum (reaction turbine), receive high-speed steam flow emitted from a nozzle cascade, convert kinetic energy of the steam into mechanical energy, and rotate the rotor. In the prior art, the fixed blades on the steam turbine diaphragm are generally fixedly connected with the diaphragm body in a welding mode, and in work, the fixed blades are impacted by high-temperature and high-pressure quick steam for a long time, so that part of the fixed blades are damaged or deformed after being used for a long time, the using effect of the diaphragm is affected, the whole diaphragm can be replaced at the moment, and unnecessary waste is caused.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, provide a structural design is reasonable, the equipment is convenient and can carry out the steam turbine baffle of changing alone to the stator blade.

The utility model adopts the following technical scheme:

a steam turbine diaphragm comprises a diaphragm body, wherein the diaphragm body comprises a first plate body and a second plate body which are mutually butted, the first plate body comprises a first diaphragm inner ring, a first diaphragm outer ring and a first stationary blade component arranged between the first diaphragm inner ring and the first diaphragm outer ring, the first stationary blade component comprises an inner shroud, an outer shroud and a plurality of stationary blades arranged between the inner shroud and the outer shroud, the outer side wall of the inner shroud is provided with a plurality of inner clamping grooves which are uniformly distributed along the circumferential direction of the inner shroud and are in one-to-one correspondence with the stationary blades, the inner side wall of the outer shroud is provided with a plurality of outer clamping grooves which are uniformly distributed along the circumferential direction of the outer shroud and are in one-to-one correspondence with the stationary blades, one end of the stationary blade is spliced in the inner clamping grooves and fixed through screws, the other end of the stationary blade is spliced in the outer clamping grooves and fixed through screws, the structure of the second plate body is the same as that of the first plate body.

As an optimal technical scheme of the utility model, be equipped with the water jacket that sets up along the circumference direction of first baffle outer loop on the inside wall of first baffle outer loop, the cross-section of water jacket is "T" font structure, be equipped with the outer fixture block with water jacket looks adaptation on the lateral wall of periphery area, outer fixture block joint is in the water jacket and through the fix with screw, be equipped with the inside groove that sets up along the circumference direction of interior periphery area on the inside wall of interior periphery area, the cross-section of inside groove is "T" font structure, be equipped with the interior fixture block with inside groove looks adaptation on the inner ring's of first baffle the lateral wall, interior fixture block joint is in the inside groove and through the fix with screw.

The utility model has the advantages that:

the utility model has the advantages of reasonable design, wherein first stationary blade subassembly and first baffle inner ring, adopt the detachable mode to be connected between the first baffle outer loop, stationary blade and inner surrounding area on the first stationary blade subassembly simultaneously, also adopt the detachable mode to be connected between the peripheral area to can enough change whole first stationary blade subassembly when using, also can change alone the single stationary blade on the first stationary blade subassembly, avoid the stationary blade to damage the extravagant phenomenon that needs to change whole baffle and cause.

Drawings

FIG. 1 is a schematic structural view of the separator body of the present invention;

fig. 2 is a schematic cross-sectional view of the first plate body;

the symbols in the drawings illustrate that:

the diaphragm comprises a first diaphragm inner ring 1, a first diaphragm outer ring 2, an inner peripheral belt 3, a peripheral belt 4, a static blade 5, an outer groove 6, an outer clamping block 7, an inner groove 8 and an inner clamping block 9.

Detailed Description

The invention will now be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, a steam turbine diaphragm comprises a diaphragm body, the diaphragm body comprises a first plate body and a second plate body which are mutually butted through screws, the first plate body comprises a first diaphragm inner ring 1, a first diaphragm outer ring 2 and a first stationary blade assembly arranged between the first diaphragm inner ring 1 and the first diaphragm outer ring 2, the first stationary blade assembly comprises an inner shroud 3, an outer shroud 4 and a plurality of stationary blades 5 arranged between the inner shroud 3 and the outer shroud 4, a plurality of inner clamping grooves (not shown in the figure) which are uniformly distributed along the circumferential direction of the inner shroud 3 and are arranged in one-to-one correspondence with the stationary blades 5 are arranged on the outer side wall of the inner shroud 3, a plurality of outer clamping grooves (not shown in the figure) which are uniformly distributed along the circumferential direction of the outer shroud 4 and are arranged in one-to-one correspondence with the stationary blades 5 are arranged on the inner side wall of the outer shroud 4, one end of the static blade 5 is inserted into the inner clamping groove and fixed through a screw, the other end of the static blade 5 is fixedly inserted into the outer clamping groove and fixed through a screw, and the structure of the second plate body is the same as that of the first plate body;

be equipped with the water jacket 6 that sets up along the circumferential direction of first baffle outer loop 2 on the inside wall of first baffle outer loop 2, the cross-section of water jacket 6 is "T" font structure, be equipped with the outer fixture block 7 with water jacket 6 looks adaptation on the lateral wall of peripheral zone 4, during the installation, outer fixture block 7 joint is in water jacket 6 and through the fix with screw, be equipped with the inside groove 8 that sets up along the circumferential direction of interior peripheral zone 3 on the inside wall of interior peripheral zone 3, the cross-section of inside groove 8 is "T" font structure, be equipped with the interior fixture block 9 with inside groove 8 looks adaptation on the lateral wall of first baffle inner ring 1, during the installation, interior fixture block 9 joint is in inside groove 8 and through the fix with screw.

Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.

Claims

1. The utility model provides a steam turbine baffle, includes the baffle body, the baffle body includes the first plate body and the second plate body of mutual butt joint, its characterized in that: the first plate body comprises a first clapboard inner ring (1), a first clapboard outer ring (2) and a first static blade component arranged between the first clapboard inner ring (1) and the first clapboard outer ring (2), the first static blade component comprises an inner shroud (3), an outer shroud (4) and a plurality of static blades (5) arranged between the inner shroud (3) and the outer shroud (4), the outer side wall of the inner shroud (3) is provided with a plurality of inner clamping grooves which are uniformly distributed along the circumferential direction of the inner shroud (3) and are arranged in one-to-one correspondence with the static blades (5), the inner side wall of the outer shroud (4) is provided with a plurality of outer clamping grooves which are uniformly distributed along the circumferential direction of the outer shroud (4) and are arranged in one-to-one correspondence with the static blades (5), one end of the static blade (5) is inserted into the inner clamping groove and fixed by a screw, the other end of the static blade (5) is fixedly inserted into the outer clamping groove and fixed by a screw, the structure of the second plate body is the same as that of the first plate body.

2. The steam turbine diaphragm according to claim 1 wherein: be equipped with on the inside wall of first baffle outer loop (2) outer slot (6) that set up along the circumferential direction of first baffle outer loop (2), the cross-section of outer slot (6) is "T" font structure, be equipped with outer fixture block (7) with outer slot (6) looks adaptation on the lateral wall of peripheral band (4), outer fixture block (7) joint is in outer slot (6) and through the fix with screw, be equipped with inside groove (8) that set up along the circumferential direction of inside band (3) on the inside wall of inside band (3), the cross-section of inside groove (8) is "T" font structure, be equipped with on the lateral wall of first baffle inner ring (1) interior fixture block (9) with inside groove (8) looks adaptation, interior fixture block (9) joint is in inside groove (8) and through the fix with screw.