CN214196422U

CN214196422U - High-strength nuclear power low-pressure exhaust cylinder

Info

Publication number: CN214196422U
Application number: CN202023192437.XU
Authority: CN
Inventors: 杜振洪
Original assignee: SUZHOU JUNENG GENERATOR COROLLARY EQUIPMENT CO Ltd
Current assignee: SUZHOU JUNENG GENERATOR COROLLARY EQUIPMENT CO Ltd
Priority date: 2020-12-27
Filing date: 2020-12-27
Publication date: 2021-09-14
Anticipated expiration: 2030-12-27

Abstract

The utility model provides a high strength nuclear power low pressure air discharge casing, includes anterior segment, middle section, back end, anterior segment and back end symmetry set up the both sides in the middle section, just anterior segment, middle section, back end are equallyd divide for first half and second half and cooperate the butt joint setting, the tip that is close to the middle section on anterior segment and the back end is provided with flange, flange is ring shape, just flange all is connected with anterior segment and back end through the stiffener. The high-strength nuclear power low-pressure exhaust cylinder has simple structural design and is easy to manufacture and use; the reinforcing ribs and the reinforcing rods are matched for use, so that the use amount of high-grade steel is reduced, and the strength of the cylinder body is further improved; the assembled type welding device has the advantages of compact welding, easy assembly and prolonged service life.

Description

High-strength nuclear power low-pressure exhaust cylinder

Technical Field

The utility model belongs to the technical field of the steam turbine subassembly, specifically, relate to a high strength nuclear power low pressure air discharge casing.

Background

The advent of steam turbines has driven the development of the power industry. The steam turbine industry is an industry with relatively mature market development and relatively stable demand. The requirements of target market customers on the production process and quality of products are gradually improved, and the market share of medium and high-end products is gradually improved in a target market demand structure. In the aspect of domestic market, along with the rapid promotion of urbanization process, the market development prospect of the steam turbine industry is wider. In the aspect of international market, with the gradual resurgence of the international economic and financial market, the requirements of the European and American markets tend to be stable, and the international market, particularly the emerging economic market, has a wider development prospect.

The low-pressure exhaust cylinder is one of the important components of the steam turbine, the low-pressure exhaust cylinder of the steam turbine is divided into an outer cylinder, an inner cylinder heat insulation plate and the like, the inner cylinder is divided into an upper half and a lower half, the inner cylinder is the most complex component of the unit, the requirements on appearance and internal quality are high, the production difficulty is very high, and deformation is easily caused. The strengthening rib is welded on the outer wall of the cylinder body in the prior art, the strength of the outer cylinder is increased, the outer cylinder is prevented from deforming, the normal operation of the steam turbine can be better ensured, the strength of the low-pressure cylinder is improved only through the strengthening rib, and the effect is not obvious.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims at providing a high-strength nuclear power low-pressure exhaust cylinder which has simple structural design and is easy to manufacture and use; the reinforcing ribs and the reinforcing rods are matched for use, so that the use amount of high-grade steel is reduced, and the strength of the cylinder body is further improved; the assembled type welding device has the advantages of compact welding, easy assembly and prolonged service life.

The technical scheme is as follows: the utility model provides a high strength nuclear power low pressure air discharge casing, including anterior segment, middle section, back end, anterior segment and back end symmetry set up the both sides in the middle section, just it is first and second looks cooperation butt joint setting that equally divide for anterior segment, middle section, back end, the tip that is close to the middle section on anterior segment and the back end is provided with flange, flange is ring shape, just flange all is connected with anterior segment and back end through the stiffener. The high-strength nuclear power low-pressure exhaust cylinder has simple structural design and is easy to manufacture and use; the reinforcing ribs and the reinforcing rods are matched for use, so that the use amount of high-grade steel is reduced, and the strength of the cylinder body is further improved; the assembled type welding device has the advantages of compact welding, easy assembly and prolonged service life.

Furthermore, in the high-strength nuclear power low-pressure exhaust cylinder, the two end parts of the middle section are provided with annular connecting plates which are outward along the circumference of the middle section, and the inner connecting plates are connected with the connecting flanges in a matched manner. The inner connecting plate is connected with the connecting flange in a welding way, and the production, the manufacture and the assembly operation are easy.

Furthermore, the sections of the front section and the rear section of the high-strength nuclear power low-pressure exhaust cylinder are both arranged in a conical manner, and the conical end is close to one end of the middle section; the connecting flange is sleeved outside the tapered ends of the front section and the rear section. The use amount of high-grade steel is saved, and the production cost is reduced.

Furthermore, in the high-strength nuclear power low-pressure exhaust cylinder, the ends of the front section and the rear section, which are far away from the middle section, are provided with outer connecting plates which are outward along the circumference. The structure design is simple, and the manufacture and the use are easy.

Furthermore, in the high-strength nuclear power low-pressure exhaust cylinder, two end parts of the reinforcing rod are respectively connected with the outer connecting plate and the connecting flange. And the connecting flange is supported, so that the connecting strength is ensured.

Furthermore, in the high-strength nuclear power low-pressure exhaust cylinder, the number of the reinforcing rods is multiple, and the reinforcing ribs are arranged on the connecting flange corresponding to the reinforcing rods. The strength of the support is further improved, and therefore the strength of the cylinder body is further improved.

Furthermore, the center of the high-strength nuclear power low-pressure exhaust cylinder is provided with a ring groove matched with the rotating shaft seal, and the middle section is internally provided with a shaft groove matched with the rotating shaft rotor.

Above-mentioned technical scheme can find out, the utility model discloses following beneficial effect has: the high-strength nuclear power low-pressure exhaust cylinder has simple structural design and is easy to manufacture and use; the reinforcing ribs and the reinforcing rods are matched for use, so that the use amount of high-grade steel is reduced, and the strength of the cylinder body is further improved; the assembled type welding machine has the advantages of compact welding, easy assembly, prolonged service life and high popularization value.

Drawings

FIG. 1 is the structure schematic diagram of the high-strength nuclear power low-pressure exhaust cylinder of the utility model.

In the figure: 1 front section, 11 connecting flanges, 12 reinforcing rods, 111 reinforcing ribs, 13 outer connecting plates, 2 middle sections, 21 inner connecting plates, 22 shaft grooves, 3 rear sections and 31 ring grooves.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

The high-strength nuclear power low-pressure exhaust cylinder shown in fig. 1 comprises a front section 1, a middle section 2 and a rear section 3, wherein the front section 1 and the rear section 3 are symmetrically arranged on two sides of the middle section 2, the front section 1, the middle section 2 and the rear section 3 are uniformly matched and butted in the first half and the second half, a connecting flange 11 is arranged at the end part, close to the middle section 2, of the front section 1 and the rear section 3, the connecting flange 11 is circular, and the connecting flange 11 is connected with the front section 1 and the rear section 3 through reinforcing rods 12. The two ends of the middle section 2 are provided with inner connecting plates 21 which are outward along the circumference of the middle section, and the inner connecting plates 21 are connected with the connecting flange 11 in a matching way. The sections of the front section 1 and the rear section 3 are both arranged in a conical shape, and the conical end is close to one end of the middle section 2; the connecting flange 11 is sleeved outside the tapered ends of the front section 1 and the rear section 3. And one ends of the front section 1 and the rear section 3, which are far away from the middle section 2, are provided with outer connecting plates 13 which are outward along the circumference of the outer connecting plates. The two ends of the reinforcing rod 12 are connected with the outer connecting plate 13 and the connecting flange 11 respectively. The reinforcing rods 12 are provided in plurality, and reinforcing ribs 111 are provided on the connecting flange 11 at positions corresponding to the reinforcing rods 12. The middle part is provided with a ring groove 31 matched with a rotating shaft seal, and the middle section 2 is internally provided with a shaft groove 22 matched with a rotating shaft rotor.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principles of the present invention, and these modifications should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a high strength nuclear power low pressure air discharge cylinder, its characterized in that, includes anterior segment (1), middle section (2), back end (3), anterior segment (1) and back end (3) symmetry set up the both sides in middle section (2), just anterior segment (1), middle section (2), back end (3) are equallyd divide for first half and second half cooperation butt joint setting, the tip that is close to middle section (2) on anterior segment (1) and back end (3) is provided with flange (11), flange (11) are ring shape, just flange (11) all are connected with anterior segment (1) and back end (3) through stiffener (12).

2. The high-strength nuclear power low-pressure exhaust cylinder as claimed in claim 1, characterized in that two ends of the middle section (2) are provided with annular inner connecting plates (21) which are outward along the circumference of the middle section, and the inner connecting plates (21) are connected with the connecting flange (11) in a matching manner.

3. The high-strength nuclear power low-pressure exhaust cylinder as claimed in claim 1, characterized in that the sections of the front section (1) and the rear section (3) are both arranged in a conical shape, and the conical end is close to one end of the middle section (2); the connecting flange (11) is sleeved outside the tapered ends of the front section (1) and the rear section (3).

4. The high-strength nuclear power low-pressure exhaust cylinder according to claim 1, characterized in that the ends of the front section (1) and the rear section (3) far away from the middle section (2) are provided with outer connecting plates (13) which are outward along the circumference thereof.

5. The high-strength nuclear power low-pressure exhaust cylinder according to claim 4, wherein two ends of the reinforcing rod (12) are respectively connected with the outer connecting plate (13) and the connecting flange (11).

6. The high-strength nuclear power low-pressure exhaust cylinder according to claim 5, characterized in that a plurality of reinforcing rods (12) are arranged, and reinforcing ribs (111) are arranged on the connecting flange (11) at positions corresponding to the reinforcing rods (12).

7. The high-strength nuclear power low-pressure exhaust cylinder according to claim 1, characterized in that a ring groove (31) matched with a rotating shaft seal is arranged in the middle of the front section (1), and a shaft groove (22) matched with a rotating shaft rotor is arranged in the middle section (2).