CN211500725U - Detachable impeller structure for steam turbine - Google Patents

Abstract

The utility model discloses a relate to steam turbine technical field, specifically be a dismantlement formula impeller structure for steam turbine, including impeller body and the impeller shaft of setting at the impeller body intermediate position, impeller body comprises two sets of semi-ring structures, and is fixed through propping tight board and spacing draw-in groove phase limit between two sets of semi-ring structures, and the front end homogeneous body of two sets of semi-ring structures is equipped with the adapter sleeve, and the adapter sleeve is semi-ring structure block in the outer lane department of impeller shaft. The impeller body of the utility model is composed of two groups of semi-ring structures, the impeller body is convenient to be independently disassembled and assembled with the impeller shaft, the maintenance difficulty and the maintenance cost are reduced, and the use is convenient; the utility model discloses well impeller body comprises two sets of semi-ring structure, and through propping tight board and spacing draw-in groove looks spacing fixed between two sets of semi-ring structure, fixed knot constructs firmly, and fixes through a clamping screw of mutually perpendicular and No. two clamping screw between two sets of semi-ring structure, is difficult not hard up, and the practicality is strong.

Description

Detachable impeller structure for steam turbine

Technical Field

The utility model relates to a steam turbine technical field specifically is a dismantlement formula impeller structure for steam turbine.

Background

The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. The steam turbine is the main equipment of modern thermal power plant, also is used in metallurgical industry, chemical industry, naval vessel power device, but it still has following drawback in the in-service use process:

the steam turbine is provided with a plurality of groups of impellers which are often sleeved on the wheel shaft once, so that the independent disassembly and assembly are inconvenient, and the use is inconvenient.

To this end, we propose a detachable impeller structure for steam turbines to solve the above drawbacks well.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a steam turbine is with dismantlement formula impeller structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a detachable impeller structure for a steam turbine comprises an impeller body and an impeller shaft arranged in the middle of the impeller body, wherein the impeller body is composed of two groups of semi-annular structures, the two groups of semi-annular structures are limited and fixed through a tensioning plate and a limiting clamping groove, a connecting sleeve is integrally arranged at the front end of each group of semi-annular structures and clamped at the outer ring of the impeller shaft in a semi-annular structure manner, an upper and a lower penetrating mounting hole is formed in the impeller shaft, a fixing clamping sleeve is integrally arranged at the outer ring of the middle of the connecting sleeve, a first fixing screw rod movably penetrates through the mounting hole, two ends of the first fixing screw rod respectively movably penetrate through the two groups of connecting sleeves and the two groups of fixing clamping sleeves, the end part of the first fixing screw rod is connected with a first limiting nut through thread fit, and the first limiting nut is movably attached to one surface, far away from the connecting sleeve, of, the two ends of the first fixing screw rod are respectively provided with a fixing hole which penetrates through the left and the right, the second fixing screw rod is movably inserted into the fixing hole, the two ends of the second fixing screw rod simultaneously penetrate through two side faces of the fixing clamping sleeve, two ends of the second fixing screw rod are respectively connected with a second limiting nut through thread fit, and the second limiting nut is movably attached to the side face of the fixing clamping sleeve.

Preferably, the bracing plates are arranged in a plurality of groups in an inclined plate-shaped structure, the groups of the bracing plates are movably arranged on the lower surface of the semi-annular structure of the impeller body formed at the upper end in a pairwise symmetrical manner, a plurality of groups of rubber pads are fixedly arranged on the lower surface of the semi-annular structure of the impeller body formed at the upper end, and the bracing plates in pairwise symmetry are respectively fixed on two side surfaces of the rubber pads.

Preferably, the limiting clamping groove is arranged on the upper surface of a semi-annular structure of the impeller body formed at the lower end, and the upper end opening of the limiting clamping groove is smaller than the lower end opening of the limiting clamping groove.

Preferably, the two pairwise symmetric tightening plates are respectively clamped in the corresponding limiting clamping grooves, and the tightening plates are attached to the inner walls of the limiting clamping grooves.

Preferably, the two pairwise symmetrical tightening plates are fixedly connected through springs, the springs are arranged below the rubber pads, and when the two pairwise symmetrical tightening plates are attached to the inner walls of the limiting clamping grooves, the springs are in a compressed state.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the impeller body of the utility model is composed of two groups of semi-ring structures, the impeller body is convenient to be independently disassembled and assembled with the impeller shaft, the maintenance difficulty and the maintenance cost are reduced, and the use is convenient;

2. the utility model discloses well impeller body comprises two sets of semi-ring structure, and through propping tight board and spacing draw-in groove looks spacing fixed between two sets of semi-ring structure, fixed knot constructs firmly, and fixes through a clamping screw of mutually perpendicular and No. two clamping screw between two sets of semi-ring structure, is difficult not hard up, and the practicality is strong.

Drawings

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

fig. 2 is an enlarged schematic view of a structure in fig. 1 according to the present invention.

In the figure: impeller body 1, impeller shaft 2, adapter sleeve 3, mounting hole 4, fixed cutting ferrule 5, fixed orifices 6, No. two stop nut 7, No. two fixed screw 8, No. one stop nut 9, a fixed screw 10, rubber pad 11, prop up tight board 12, spring 13, spacing draw-in groove 14.

Detailed Description

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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: the utility model provides a turbine is with dismantlement formula impeller structure, including impeller body 1 and the impeller shaft 2 of setting at impeller body 1 intermediate position, impeller body 1 comprises two sets of semi-ring structure, it is fixed with spacing draw-in groove 14 looks spacing through propping tight board 12 between two sets of semi-ring structure, it is equipped with a plurality of groups to prop the platelike structure that tight board 12 is the slope, a plurality of groups prop the semiring structure lower surface that tight board 12 two bisymmetry activities set up impeller body 1 at the upper end, the semiring structure lower surface that impeller body 1 was constituteed to the upper end is fixed and is equipped with a plurality of groups of rubber pad 11, the both sides face at rubber pad 11 is fixed respectively to propping tight board 12 of two bisymmetry, prop tight board 12 and pass through rubber pad 11 and the connection of semiring structure, it is used to make things convenient.

Wherein, spacing draw-in groove 14 sets up the semicircular structure upper surface that constitutes impeller body 1 at the lower extreme, and spacing draw-in groove 14 is the upper end opening and is less than lower extreme open-ended dovetail groove structure.

The two symmetrical tightening plates 12 are respectively clamped in the corresponding limit slots 14, and the tightening plates 12 are attached to the inner walls of the limit slots 14.

The two symmetrical tightening plates 12 are fixedly connected through springs 13, the springs 13 are arranged below the rubber pads 11, and when the two symmetrical tightening plates 12 are attached to the inner walls of the limiting clamping grooves 14, the springs 13 are in a compressed state;

the front ends of the two groups of semi-annular structures are integrally provided with connecting sleeves 3, the connecting sleeves 3 are clamped at the outer ring of the impeller shaft 2 in a semi-annular structure, the impeller shaft 2 is provided with a mounting hole 4 which penetrates through the upper part and the lower part, the outer ring of the middle position of the connecting sleeves 3 is integrally provided with a fixed clamping sleeve 5, a first fixed screw 10 penetrates through the mounting hole 4 in a movable manner, two ends of the first fixed screw 10 respectively penetrate through the two groups of connecting sleeves 3 and the two groups of fixed clamping sleeves 5 in a movable manner, the end part of the first fixed screw 10 is connected with a first limit nut 9 in a threaded fit manner, the first limit nut 9 is movably attached to one surface of the fixed clamping sleeve 5 far away from the connecting sleeves 3, two ends of the first fixed screw 10 are both provided with fixing holes 6 which penetrate through the left and the right part, a second fixed screw 8 is movably inserted in the fixing holes 6, two ends of the second fixed screw 8 simultaneously penetrate through two side surfaces of the, no. two stop nut 7 activity laminating is in the side of fixed cutting ferrule 5.

The working principle is as follows: two groups of semi-annular structures forming the impeller body 1 can be directly sleeved on the impeller shaft 2 and are fixed through the first fixing screw rod 10, and the second fixing screw rod 8 fixes the first fixing screw rod 10 in the fixing clamping sleeve 5 of the connecting sleeve 3, so that further stable fixation is realized.

The impeller body 1 in the utility model is composed of two groups of semi-ring structures, the impeller body 1 is convenient to be independently disassembled and assembled with the impeller shaft 2, the maintenance difficulty and the maintenance cost are reduced, and the use is convenient;

the elasticity of the spring 13 tightly clamps the two symmetrical tightening plates 12 between the limiting clamping grooves 14, so that the two groups of semi-annular structures forming the impeller body 1 are further stabilized and limited, and the structures are stably connected.

The utility model discloses well impeller body 1 comprises two sets of semi-ring structure, and is fixed through propping tight board 12 and spacing draw-in groove 14 looks spacing between two sets of semi-ring structure, and fixed knot constructs firmly, and fixes through a clamping screw 10 of mutually perpendicular and No. two clamping screw 8 between two sets of semi-ring structure, and difficult not hard up, the practicality is strong.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a dismantlement formula impeller structure for steam turbine, includes impeller body (1) and sets up impeller shaft (2) at impeller body (1) intermediate position, its characterized in that: the impeller body (1) is composed of two groups of semi-ring structures, the two groups of semi-ring structures are limited and fixed through a tensioning plate (12) and a limiting clamping groove (14), the front ends of the two groups of semi-ring structures are integrally provided with a connecting sleeve (3), the connecting sleeve (3) is clamped at the outer ring of the impeller shaft (2) in a semi-ring structure manner, the impeller shaft (2) is provided with a mounting hole (4) which penetrates through the impeller shaft from top to bottom, the outer ring of the middle position of the connecting sleeve (3) is integrally provided with a fixing clamping sleeve (5), a fixing screw rod (10) penetrates through the mounting hole (4) in a movable manner, two ends of the fixing screw rod (10) respectively and movably penetrate through the two groups of connecting sleeves (3) and the two groups of fixing clamping sleeves (5), the end part of the fixing screw rod (10) is connected with a limiting nut (9) through thread matching, the limiting nut (9) is movably attached to one surface of the fixing clamping sleeve (, fixed orifices (6) that run through about all being equipped with in the both ends of a clamping screw (10), the activity interlude has No. two clamping screw (8) in fixed orifices (6), the both ends of No. two clamping screw (8) are passed the both sides face of fixed cutting ferrule (5) simultaneously, and the both ends of No. two clamping screw (8) all are connected with No. two stop nut (7) through screw-thread fit, No. two stop nut (7) activity laminating is in the side of fixed cutting ferrule (5).

2. The detachable impeller structure for a steam turbine according to claim 1, wherein: the plate-shaped structure that props up board (12) and be the slope is equipped with a plurality of groups, and the two bisymmetry activities of a plurality of groups prop up board (12) set up the semi-ring structure lower surface of constituting impeller body (1) at the upper end, and the semi-ring structure lower fixed surface of constituting impeller body (1) at the upper end is equipped with a plurality of groups rubber pad (11), and the both sides face at rubber pad (11) is fixed respectively in propping up board (12) of two bisymmetry.

3. The detachable impeller structure for a steam turbine according to claim 2, wherein: the limiting clamping groove (14) is arranged on the upper surface of a semi-annular structure of the impeller body (1) formed at the lower end, and the upper end opening of the limiting clamping groove (14) is smaller than the lower end opening of the trapezoidal groove structure.

4. A detachable impeller structure for a steam turbine according to claim 3, wherein: the two symmetrical tightening plates (12) are respectively clamped in the corresponding limiting clamping grooves (14), and the tightening plates (12) are attached to the inner walls of the limiting clamping grooves (14).

5. The detachable impeller structure for a steam turbine according to claim 4, wherein: the two-two symmetrical tightening plates (12) are fixedly connected through the springs (13), the springs (13) are arranged below the rubber pads (11), and when the two-two symmetrical tightening plates (12) are attached to the inner wall of the limiting clamping groove (14), the springs (13) are in a compression state.

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