CN216240837U - Novel steam exhaust guide ring for steam turbine - Google Patents

Abstract

The utility model discloses a novel steam exhaust guide ring for a steam turbine, which comprises a left semi-conductor ring and a right semi-conductor ring which are symmetrically arranged, wherein guide plates are obliquely welded on the inner sides of the left semi-conductor ring and the right semi-conductor ring, and supporting rib plates are welded on the outer sides of the left semi-conductor ring and the right semi-conductor ring; the both sides of left side semi-conductive flow ring all weld and are provided with the fixing base, and right half flow ring both sides all weld and are provided with the mount pad, through connecting axle fixed connection between the middle part of this fixing base and this mount pad, the one end rotation that the fixing base was kept away from to this connecting axle is provided with according to the depression bar. Has the advantages that: through setting up the mode that the water conservancy diversion ring body set up to left half water conservancy diversion ring and half water conservancy diversion ring concatenation on the right side to be convenient for actual transportation and installation, and utilize the ring flange to install two sets of water conservancy diversion rings and steam turbine, and utilize the connecting axle and press the fixed fast of pressing the depression bar and can realize two sets of water conservancy diversion rings, wherein the connecting axle with press the fixed mode convenient operation of depression bar and adjust in a flexible way.

Description

Novel steam exhaust guide ring for steam turbine

Technical Field

The utility model relates to the technical field of steam turbines, in particular to a novel steam exhaust guide ring for a steam turbine.

Background

The volume flow of the exhausted steam of the low-pressure cylinder of the steam turbine is large, so that the size of the low-pressure cylinder is also large, and the low-pressure cylinder is the most huge device in the steam turbine. Because the steam pressure and the temperature flowing through the low-pressure cylinder are both low, the structural strength of the low-pressure cylinder body is not the most important technical problem of low-pressure cylinder molding, and the most important technical problem of low-pressure cylinder molding is that a steam exhaust channel in the low-pressure cylinder needs to have reasonable and good flow characteristics while ensuring sufficient rigidity, so as to reduce steam exhaust loss. Based on this, the exhaust of low pressure cylinder adopts the exhaust cylinder of radial diffusion structure to make full use of the kinetic energy of exhaust steam surplus speed reduces the exhaust loss, and the water conservancy diversion ring is one of the important component parts of exhaust cylinder.

The flow guide ring is also called a flow divider ring and is divided into an inlet flow guide ring and an exhaust flow guide ring. The main function of the exhaust steam guide ring is to utilize the kinetic energy of exhaust steam as much as possible and reduce the flow loss. In the prior art, the structure of the steam exhaust guide ring is complex, so that the installation and operation of workers are inconvenient; the patent number CN211397673U discloses a steam exhaust guide ring for a steam turbine, which divides a guide ring body into a left group and a right group, and fixes the two groups of guide rings by bolts, but the bolts are easy to loosen in the actual use process, thereby causing gas leakage and guide ring shaking; in addition, the bolt is easy to corrode in the using process, so that the bolt is inconvenient to disassemble and install for the second time.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel steam exhaust guide ring for a steam turbine, aiming at the problems in the related art and aiming at overcoming the technical problems in the prior related art.

Therefore, the utility model adopts the following specific technical scheme:

a novel steam exhaust guide ring for a steam turbine comprises a left semi-conductor ring and a right semi-conductor ring which are symmetrically arranged, wherein flanges are welded at the bottom ends of the left semi-conductor ring and the right semi-conductor ring, guide plates are obliquely welded at the inner sides of the left semi-conductor ring and the right semi-conductor ring, and supporting rib plates are welded between the inner sides and the outer sides of the left semi-conductor ring and the right semi-conductor ring and the top ends of the flanges; the both sides of left side semi-conductive flow ring all weld and are provided with the fixing base, and right half flow ring both sides all weld and are provided with the mount pad, through connecting axle fixed connection between the middle part of this fixing base and this mount pad, the one end rotation that the fixing base was kept away from to this connecting axle is provided with according to the depression bar.

Further, in order to improve the radiating efficiency of water conservancy diversion ring body and convenient hoist and mount, the hole for hoist has been seted up at support rib plate's top, the water pipe standing groove has been seted up at this support rib plate's middle part, the equal joint in middle part of the positive both sides of left side semi-conductive ring is provided with the sealing strip, and the middle part of the positive both sides of right half water conservancy diversion ring all seted up with this sealing strip matched with draw-in groove, the bottom of the positive both sides of right half water conservancy diversion ring all is provided with the stopper, and the bottom of the positive both sides of left side semi-conductive ring seted up with this stopper matched with spacing groove.

Further, in order to guarantee the fixed convenience and the reliability of two sets of guide rings, the spacing hole with connecting axle matched with is seted up at the middle part of fixing base, the vertical notch has been seted up on the top of mount pad, the mounting hole that equals with the connecting axle diameter is seted up to the below that should found the notch, and the width that should found the notch equals half of this mounting hole aperture, the one end of connecting axle is provided with spacing ball, the diameter of this spacing ball is greater than the aperture in spacing hole, the other end of this connecting axle is provided with D shape pole, the cross sectional area of this D shape pole equals half of this connecting axle cross sectional area, and the one end that the connecting axle was kept away from to this D shape pole vertically is provided with the installation axle, the eccentric orfice has been seted up to the one end of pressing the depression bar, the inside cover of this eccentric orfice is equipped with the installation axle.

The utility model has the beneficial effects that:

(1) the mode through setting up the water conservancy diversion ring body into the concatenation of left half water conservancy diversion ring and right half water conservancy diversion ring to be convenient for actual transportation and installation, and utilize the ring flange to install two sets of water conservancy diversion rings and steam turbine, and utilize the connecting axle and press the quick fixed that two sets of water conservancy diversion rings can be realized to the depression bar, wherein the connecting axle just adjusts in a flexible way with the fixed mode convenient operation of pressing the depression bar, thereby can improve the installation and the maintenance efficiency of water conservancy diversion ring body.

(2) Through setting up support rib plate to set up hole for hoist and mount and water pipe standing groove on support rib plate, can improve the radiating efficiency of water conservancy diversion ring body on the one hand, on the other hand can be convenient for the hoist and mount of water conservancy diversion ring body, thereby realizes installing fast.

(3) Through setting up stopper and spacing groove, can realize the quick butt joint of left side semiconductor stream ring and half right water conservancy diversion ring, and the sealing strip can guarantee that left side semiconductor stream ring is inseparabler with half laminating of right water conservancy diversion ring to prevent that the gas from revealing.

(4) The notch is set up through opening on the top of mount pad to the one end setting of connecting axle equals D shape pole with found notch width, thereby can effectually prevent that the connecting axle from deviating from in getting into the mounting hole after, thereby guarantees the fixed reliability of two sets of water conservancy diversion rings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is an isometric view of a novel exhaust deflector ring for a steam turbine according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a left semi-flow guiding ring in a novel steam exhaust guiding ring for a steam turbine according to an embodiment of the utility model;

FIG. 3 is a schematic structural view of a right half diaphragm ring of the novel exhaust diaphragm for a steam turbine according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a connecting shaft in a novel steam exhaust guide ring for a steam turbine according to an embodiment of the utility model;

fig. 5 is a schematic structural diagram of a pressing rod in a novel steam exhaust guide ring for a steam turbine according to an embodiment of the utility model.

In the figure:

1. a left semi-conductive current ring; 2. a right half guide ring; 3. a flange plate; 4. a baffle; 5. supporting the rib plate; 501. hoisting holes; 502. a water pipe placing groove; 6. a fixed seat; 601. a limiting hole; 7. a mounting seat; 701. erecting a notch; 702. mounting holes; 8. a connecting shaft; 801. a limiting ball; 802. a D-shaped rod; 803. installing a shaft; 9. a pressing lever; 901. an eccentric hole; 10. a sealing strip; 11. a card slot; 12. a limiting block; 13. a limiting groove.

Detailed Description

For further explanation of the various embodiments, the drawings which form a part of the disclosure and which are incorporated in and constitute a part of this specification, illustrate embodiments and, together with the description, serve to explain the principles of operation of the embodiments, and to enable others of ordinary skill in the art to understand the various embodiments and advantages of the utility model, and, by reference to these figures, reference is made to the accompanying drawings, which are not to scale and wherein like reference numerals generally refer to like elements.

According to an embodiment of the utility model, a novel steam exhaust guide ring for a steam turbine is provided.

Referring to the drawings and the detailed description, the utility model will be further described, as shown in fig. 1-5, the novel steam exhaust guide ring for a steam turbine according to the embodiment of the utility model includes a left semi-conductor ring 1 and a right semi-conductor ring 2 which are symmetrically arranged, flanges 3 are welded to the bottom ends of the left semi-conductor ring 1 and the right semi-conductor ring 2, guide plates 4 (the guide plates 4 can form a vortex to accelerate the exhaust of steam) are welded to the inner sides of the left semi-conductor ring 1 and the right semi-conductor ring 2, and support rib plates 5 are welded between the inner and outer sides of the left semi-conductor ring 1 and the right semi-conductor ring 2 and the top end of the flange 3; the both sides of left side semi-conductive flow ring 1 all weld and are provided with fixing base 6, and the right half 2 both sides of flow ring all weld and are provided with mount pad 7, through 8 fixed connection of connecting axle between the middle part of this fixing base 6 and this mount pad 7, the one end rotation that fixing base 6 was kept away from to this connecting axle 8 is provided with according to pressure depression bar 9.

By means of above-mentioned scheme, through setting up the mode that the water conservancy diversion ring body set up to the concatenation of left half water conservancy diversion ring 1 and right half water conservancy diversion ring 2, thereby be convenient for actual transportation and installation, and utilize ring flange 3 to install two sets of water conservancy diversion rings and steam turbine, and utilize connecting axle 8 and press depression bar 9 to realize the quick fixed of two sets of water conservancy diversion rings, wherein connecting axle 8 and the fixed mode convenient operation who presses depression bar 9 just adjust in a flexible way, thereby can improve the installation and the maintenance efficiency of water conservancy diversion ring body.

In an embodiment, lifting hole 501 has been seted up at the top of deep floor support 5, water pipe standing groove 502 has been seted up at this deep floor support 5's middle part, the middle part of left side semi-conductive flow ring 1's the positive both sides all the joint be provided with sealing strip 10 (sealing strip 10 is high temperature resistant material), and the middle part of right half flow guide ring 2's the positive both sides all seted up with this sealing strip 10 matched with draw-in groove 11, the bottom of right half flow guide ring 2's the positive both sides all is provided with stopper 12, and the bottom of left side semi-conductive flow guide ring 1's the positive both sides seted up with this stopper 12 matched with spacing groove 13.

The hoisting holes 501 and the water pipe placing grooves 502 are formed in the supporting rib plates 5, so that the heat dissipation efficiency of the guide ring body can be improved on one hand, and the guide ring body can be conveniently hoisted on the other hand, and therefore quick installation is achieved; through setting up stopper 12 and spacing groove 13, can realize the quick butt joint of left side semi-conductive ring 1 and right half guide ring 2, and sealing strip 10 can guarantee that left side semi-conductive ring 1 is inseparabler with right half guide ring 2 laminating to prevent that the gas from revealing.

In an embodiment, a limiting hole 601 matched with the connecting shaft 8 is formed in the middle of the fixing seat 6 (the aperture of the limiting hole 601 is slightly larger than the diameter of the connecting shaft 8), a vertical notch 701 is formed in the top end of the mounting seat 7, a mounting hole 702 with the same diameter as that of the connecting shaft 8 is formed below the vertical notch 701, the width of the vertical notch 701 is equal to half of the aperture of the mounting hole 702, a limiting ball 801 is arranged at one end of the connecting shaft 8, the diameter of the limiting ball 801 is larger than that of the limiting hole 601, a D-shaped rod 802 is arranged at the other end of the connecting shaft 8, the cross-sectional area of the D-shaped rod 802 is equal to half of the cross-sectional area of the connecting shaft 8, a mounting shaft 803 is longitudinally arranged at one end of the D-shaped rod 802 far away from the connecting shaft 8, an eccentric hole 901 is formed at one end of the pressing rod 9, and the mounting shaft 803 is sleeved inside the eccentric hole 901.

Through the eccentric setting's the pressure lever 9, can realize compressing tightly fast and dismantle, and found notch 701 can effectually prevent that connecting axle 8 from deviating from to guarantee the fixed reliability of two sets of water conservancy diversion rings, in the in-service use process, can fix spacing ball 801 mode that adopts threaded connection and the one end of connecting axle 8, can adjust the control range of connecting axle 8 like this.

For the convenience of understanding the technical solutions of the present invention, the following detailed description will be made on the working principle or the operation mode of the present invention in the practical process.

In practical application, the left semi-conductive flow ring 1 is fixed with a steam turbine by the flange plate 3 and the bolt holes on the flange plate, the limiting blocks 12 on the right semi-conductive flow ring 2 are aligned with the limiting grooves 13 on the left semi-conductive flow ring 1, and the left semi-conductive ring 1 is close to the right semi-conductive ring 2, at this time, the connecting shaft 8 on the left semi-conductive ring 1 is pulled out and rotated for a certain angle, the plane of the D-shaped rod 802 at one end of the connecting shaft 8 is vertical to the horizontal plane, the D-shaped rod 802 enters the mounting hole 702 through the vertical notch 701, at this time, the connecting shaft 8 is continuously rotated, the plane of the D-shaped rod 802 is downward and parallel to the horizontal plane, then one end of the pressing rod 9 is pressed downwards, the pressing rod 9 drives the connecting shaft 8 to extend out through the eccentric hole 901, therefore, the left half guide ring 1 and the right half guide ring 2 are fixed by the action of the pressing rod 9 and the limiting ball 801, and the right half guide ring 2 is fixed with the steam turbine by the flange 3 to complete installation.

In summary, according to the above technical solution of the present invention, the guide ring body is configured in a manner that the left half guide ring 1 and the right half guide ring 2 are spliced, so as to facilitate actual transportation and installation, the flange 3 is used to install the two sets of guide rings with the steam turbine, and the connecting shaft 8 and the pressing rod 9 are used to achieve rapid fixation of the two sets of guide rings, wherein the fixing manner of the connecting shaft 8 and the pressing rod 9 is convenient to operate and flexible to adjust, so as to improve the installation and maintenance efficiency of the guide ring body.

In addition, by arranging the support rib plate 5 and arranging the hoisting holes 501 and the water pipe placing grooves 502 on the support rib plate 5, on one hand, the heat dissipation efficiency of the guide ring body can be improved, on the other hand, the guide ring body can be conveniently hoisted, so that the quick installation is realized; the limit block 12 and the limit groove 13 are arranged, so that the left semi-conductive flow ring 1 and the right semi-conductive flow ring 2 can be quickly butted, and the sealing strip 10 can ensure that the left semi-conductive flow ring 1 and the right semi-conductive flow ring 2 are tightly attached, so that gas leakage is prevented; the notch 701 is arranged at the top end of the mounting seat 7, and the D-shaped rod 802 equal to the width of the notch 701 is arranged at one end of the connecting shaft 8, so that the connecting shaft 8 can be effectively prevented from being separated from the mounting hole 702 after entering the mounting hole 702, and the fixing reliability of the two groups of guide rings is ensured.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (7)

1. The utility model provides a novel steam extraction water conservancy diversion ring for steam turbine, includes the left half water conservancy diversion ring and the right half water conservancy diversion ring that the symmetry set up, its characterized in that:

the bottom ends of the left semi-conductive flow ring and the right semi-conductive flow ring are respectively welded with a flange plate, the inner sides of the left semi-conductive flow ring and the right semi-conductive flow ring are respectively welded with a guide plate in an inclined manner, and a support rib plate is respectively welded between the inner side and the outer side of the left semi-conductive flow ring and the right semi-conductive flow ring and the top end of the flange plate;

the both sides of left side semi-conductive flow ring all weld and are provided with the fixing base, right half flow ring both sides all weld and are provided with the mount pad, through connecting axle fixed connection between the middle part of this fixing base and this mount pad, the one end rotation that the fixing base was kept away from to this connecting axle is provided with the press lever.

2. The novel steam exhaust guide ring for the steam turbine according to claim 1, wherein the top of the support rib plate is provided with a hoisting hole, and the middle of the support rib plate is provided with a water pipe placing groove.

3. The novel steam exhaust guide ring for the steam turbine as claimed in claim 1 or 2, wherein the middle parts of the two sides of the front surface of the left half guide ring are respectively provided with a sealing strip in a clamping manner, and the middle parts of the two sides of the front surface of the right half guide ring are respectively provided with a clamping groove matched with the sealing strip.

4. The novel exhaust steam guide ring for the steam turbine as claimed in claim 1, wherein the right half guide ring has a limiting block at the bottom of each of the two sides of the front surface, and the left half guide ring has a limiting groove at the bottom of each of the two sides of the front surface, the limiting groove being engaged with the limiting block.

5. The new exhaust guide ring of claim 1 or 4, wherein the middle of the fixing base is formed with a limiting hole matching with the connecting shaft, the top end of the mounting base is formed with a vertical slot, a mounting hole having a diameter equal to that of the connecting shaft is formed below the vertical slot, and the width of the vertical slot is equal to half of the diameter of the mounting hole.

6. The new exhaust guide ring of claim 5, wherein one end of the connection shaft is provided with a limiting ball, the diameter of the limiting ball is larger than the diameter of the limiting hole, the other end of the connection shaft is provided with a D-shaped rod, the cross-sectional area of the D-shaped rod is half of the cross-sectional area of the connection shaft, and the end of the D-shaped rod away from the connection shaft is longitudinally provided with a mounting shaft.

7. The new exhaust guide ring of claim 6, wherein an eccentric hole is formed at one end of the pressing rod, and the mounting shaft is sleeved inside the eccentric hole.

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