CN209138172U

CN209138172U - A kind of steam turbine valve strainer

Info

Publication number: CN209138172U
Application number: CN201821826979.8U
Authority: CN
Inventors: 王锎; 李玢洋
Original assignee: Foshan Funeng Power Generation Co Ltd
Current assignee: Foshan Funeng Power Generation Co Ltd
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2019-07-23
Anticipated expiration: 2028-11-07

Abstract

The utility model discloses a kind of steam turbine valve strainers, including cylinder, the inner barrel is equipped with the first filter chamber and the second filter chamber, and first is equipped with partition between filter chamber and the second filter chamber, is evenly equipped with screen pipe in first filter chamber, is evenly equipped with through-hole on the outer wall of the screen pipe, and the first filter screen is equipped on the inside of screen pipe, the second filter screen is equipped on the outside of second filter chamber, and the second filter screen is annular in shape, the second filter chamber central part is equipped with fixed column.The utility model in the first filter chamber by being arranged a filter assemblies as composed by screen pipe, effectively enhance integrally-built intensity, by the filter screen that plate is arranged inside screen pipe, effectively steam can be filtered, by the second filter screen for being provided with support component inside the second filter chamber, while meeting filter effect, greatly increase the rigidity and intensity of structure.

Description

A kind of steam turbine valve strainer

Technical field

The utility model relates to steam turbine technology field, specially a kind of steam turbine valve strainer.

Background technique

Valve is a highly important ring in steam turbine control system, and effect of the valve strainer on valve mainly has two Point: first is that filtering steam, avoids foreign matter from entering two damaged blade of cylinder；Second is that rectified action, reduces aerodynamic loss.Existing valve Door strainer is mainly based on perforating type cylinder leaching net and wound form cylinder leaching net, but itself or structural strength are good, but pneumatic damage It is small to lose big or aerodynamic loss, but structural strength is poor.Although having already appeared new steam turbine valve strainer now.Such as public affairs The number of opening is a kind of steam turbine valve strainer disclosed in (CN207324354U), identical including barrel dliameter and up and down coaxially connected first Screen tube and the second screen tube, the plate that the first screen tube is equipped with several exhausting holes by one piece roll, the second screen tube packet Include cylindrical frame and the filter bag for being wrapped in cylindrical frame periphery；First screen tube has mutually to be fixed with the valve deck of steam turbine valve Interconnecting piece.

Valve strainer is divided into two parts by above-mentioned case, upper end by the flat sheet roll with exhausting hole to forming, structural strength Higher, lower end is a cylinder, and the periphery of cylinder is equipped with filter bag, also aerodynamic loss is fallen below while meeting filtering It is minimum.The advantages of being arranged in this way, being integrated with two kinds of strainers improves the overall performance of strainer.But in actual use In the process, above-mentioned case has some shortcomings, such as the first screen tube mainly by the flat sheet roll with exhausting hole to forming, although Meet the high requirement of structural strength, but filter effect is poor, the second strainer only meets filtering requirement, structural strength compared with Difference is easily damaged when in use.

For this purpose, we release a kind of steam turbine valve strainer to solve the above problems.

Summary of the invention

It is mentioned above in the background art to solve the purpose of this utility model is to provide a kind of steam turbine valve strainer Problem.

To achieve the above object, the utility model provides the following technical solutions: a kind of steam turbine valve strainer, including cylinder Body, the inner barrel be equipped with the first filter chamber and the second filter chamber, and between the first filter chamber and the second filter chamber be equipped with every Plate is evenly equipped with screen pipe in first filter chamber, through-hole is evenly equipped on the outer wall of the screen pipe, and be equipped on the inside of screen pipe First filter screen, the second filter chamber outside is equipped with the second filter screen, and the second filter screen is annular in shape, second filter chamber Central part is equipped with fixed column, says it is that support ring and support rod are equipped between fixed column and the second filter screen.

This is arranged by the way that a filter assemblies as composed by the screen pipe with through-hole are arranged in the first filter chamber, Integrally-built intensity is effectively enhanced, it, can be effectively to steam by the way that plate-like filter screen is arranged inside screen pipe It is filtered, greatly increases filter effect, by the second filtering for being provided with support component inside the second filter chamber Net greatly increases the rigidity and intensity of structure while meeting filter effect.

Preferably, first filter screen is plate-like.

This setting while reducing aerodynamic loss, can meet the requirement to steam filtration by plate filter screen.

Preferably, described screen pipe one end is fixedly connected with cylinder, and the screen pipe other end is fixedly connected with partition.

The intensity that can greatly increase structure is arranged in this.

Preferably, the cylinder upper end is equipped with the screw hole mutually fixed for the valve deck with steam turbine valve.

Preferably, the cylinder body bottom is equipped with base ring.

This setting pneumatically increases the effect of structural strength by base ring.

Preferably, the cylinder upper end is equipped with the prismatic fixing groove for fixing screen pipe.

This black can be closer with filtering tube assembly fixation by using prismatic fixing groove, so that enhancing structure is strong Degree.

Compared with prior art, the utility model has the beneficial effects that the utility model in the first filter chamber by setting A filter assemblies as composed by screen pipe are set, integrally-built intensity is effectively enhanced, by being set inside screen pipe The filter screen of plate is set, effectively steam can be filtered, by being provided with support component inside the second filter chamber Second filter screen greatly increases the rigidity and intensity of structure while meeting filter effect.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model；

Fig. 2 is the first filter chamber cross-sectional view of the utility model；

Fig. 3 is the second filter chamber cross-sectional view of the utility model.

In figure: 1 cylinder, 2 first filter chambers, 3 second filter chambers, 4 partitions, 5 screen pipes, 6 first filter screens, 7 second mistakes Strainer, 8 fixed columns, 9 support rings, 10 support rods, 11 screw holes, 12 base rings, 13 prismatic fixing grooves.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Please refer to Fig. 1-3, the utility model provides a kind of steam turbine valve strainer, including cylinder 1, in the cylinder 1 Portion is equipped with the first filter chamber 2 and the second filter chamber 3, and partition 4 is equipped between the first filter chamber 2 and the second filter chamber 3, and described the It is evenly equipped with screen pipe 5 in one filter chamber 2, through-hole is evenly equipped on the outer wall of the screen pipe 5, and is equipped with first on the inside of screen pipe 5 Filter screen 6 is equipped with the second filter screen 7 on the outside of second filter chamber 3, and the second filter screen 7 is annular in shape, second filter chamber 3 central parts are equipped with fixed column 8, say it is that support ring 9 and support rod 10 are equipped between fixed column 8 and the second filter screen 7.

Specifically, first filter screen 6 is plate-like.

Specifically, described 5 one end of screen pipe is fixedly connected with cylinder 1, and 5 other end of screen pipe is fixedly connected with partition 4.

Specifically, 1 upper end of cylinder is equipped with the screw hole 11 mutually fixed for the valve deck with steam turbine valve.

Specifically, 1 bottom of cylinder is equipped with base ring 12.

Specifically, 1 upper end of cylinder is equipped with the prismatic fixing groove 13 for fixing screen pipe 5.

In use, the present apparatus is fixed on the valve deck of steam turbine valve by screw, air-flow is when by the present apparatus, meeting The first filter chamber 2 is first passed through, by the filtering of the achievable steam of the first filter screen 6 in the first filter chamber 2, then air-flow is being worn Cross first cross chamber 2 after can enter in the second filter chamber 3, after the second filter screen inside the second filter chamber 3 crosses 7 filters, from It flows out the lower end of second filter chamber 7.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims

1. a kind of steam turbine valve strainer, including cylinder (1), it is characterised in that: be equipped with the first filter chamber inside the cylinder (1) (2) and the second filter chamber (3) partition (4), and between the first filter chamber (2) and the second filter chamber (3) are equipped with, first filtering It is evenly equipped with screen pipe (5) in chamber (2), through-hole is evenly equipped on the outer wall of the screen pipe (5), and be equipped with the on the inside of screen pipe (5) One filter screen (6), the second filter chamber (3) outside is equipped with the second filter screen (7), and the second filter screen (7) is annularly, described Second filter chamber (3) central part is equipped with fixed column (8), says it is that support ring is equipped between fixed column (8) and the second filter screen (7) (9) and support rod (10).

2. a kind of steam turbine valve strainer according to claim 1, it is characterised in that: first filter screen (6) is in plate Shape.

3. a kind of steam turbine valve strainer according to claim 1, it is characterised in that: described screen pipe (5) one end and cylinder Body (1) is fixedly connected, and screen pipe (5) other end is fixedly connected with partition (4).

4. a kind of steam turbine valve strainer according to claim 1, it is characterised in that: cylinder (1) upper end, which is equipped with, to be used In the screw hole (11) that the valve deck with steam turbine valve is mutually fixed.

5. a kind of steam turbine valve strainer according to claim 1, it is characterised in that: cylinder (1) bottom is equipped with bottom Ring (12).

6. a kind of steam turbine valve strainer according to claim 1, it is characterised in that: cylinder (1) upper end, which is equipped with, to be used Prismatic fixing groove (13) in fixed screen pipe (5).