CN219281800U

CN219281800U - Corrosion-resistant explosion-proof membrane for low-pressure cylinder of steam turbine

Info

Publication number: CN219281800U
Application number: CN202320845773.4U
Authority: CN
Inventors: 韩奎; 李俊鸣
Original assignee: GUANGZHOU HUANTOU TECHNOLOGY EQUIPMENT CO LTD
Current assignee: GUANGZHOU HUANTOU TECHNOLOGY EQUIPMENT CO LTD
Priority date: 2023-04-17
Filing date: 2023-04-17
Publication date: 2023-06-30
Anticipated expiration: 2033-04-17

Abstract

The utility model relates to the technical field of low-pressure cylinder rupture discs, in particular to an anti-corrosion steam turbine low-pressure cylinder rupture disc which comprises an rupture disc shell, wherein a lead plate rupture disc is arranged in the rupture disc shell in a matching manner. The material is changed to the transformation of steam turbine low pressure jar rupture disk, is changed into the lead plate by ordinary aluminum plate, and the lead plate compares aluminum plate and is difficult for rustting in steam environment, has good corrosion resistance to steam, erodees the performance, after changing into the lead plate material, can prolong the life of steam turbine low pressure jar rupture disk, guarantees the safe and stable operation of unit.

Description

Corrosion-resistant explosion-proof membrane for low-pressure cylinder of steam turbine

Technical Field

The utility model relates to the technical field of low-pressure cylinder explosion-proof membranes, in particular to an anti-corrosion steam turbine low-pressure cylinder explosion-proof membrane.

Background

At present, an explosion-proof membrane of a low-pressure cylinder of a wide-weight steam turbine adopts an ordinary aluminum plate, a steam-water mixture exists in the low-pressure cylinder of the steam turbine, and the ordinary aluminum plate can corrode and perforate under the steam-water scouring action for a long time, so that the explosion-proof membrane corrodes and perforates in the running process of a unit, the vacuum fluctuation of the steam turbine is caused, and the safe and stable running of a steam turbine unit is influenced; meanwhile, the explosion-proof membrane in the prior art is torn off the damaged whole body when being detached, so that the hand of a worker is easily scratched, and the operation of the worker is not facilitated.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, and provides an anti-corrosion explosion-proof membrane for a low-pressure cylinder of a steam turbine.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides an anticorrosive steam turbine low pressure jar rupture membrane, includes the rupture membrane shell, the inside of rupture membrane shell matches and is equipped with the lead plate rupture membrane, be equipped with positioning mechanism between lead plate rupture membrane and the rupture membrane shell, positioning mechanism includes fixed ring spare and a plurality of double-screw bolt, fixed ring spare matches and fixes the inside at the rupture membrane shell, the top at fixed ring spare is placed to the lead plate rupture membrane, the top of fixed ring spare is equipped with movable ring spare, the bottom of movable ring spare is contacted with the top of lead plate rupture membrane, a plurality of erection bars are installed through the screw to the top of movable ring spare, a plurality of the mounting panel is installed through the screw to the top of erection bar, a plurality of the tip of double-screw bolt all welds the tip at the rupture membrane shell, a plurality of the surface at a plurality of double-screw bolt is all movable sleeve to be established to the one end of mounting panel, a plurality of double-screw bolt all thread sleeve is equipped with fastening nut, fastening nut's surface and the surface contact of mounting panel.

Preferably, a first sealing rubber ring is adhered to the bottom of the explosion-proof membrane shell.

Preferably, the top of the fixed ring piece is adhered with a second sealing rubber ring, and the top of the second sealing rubber ring is contacted with the bottom of the lead plate explosion-proof film.

Preferably, wing edge fixing pieces are fixedly sleeved at the side edges of the top end and the bottom end of the explosion-proof film shell, and a plurality of screw holes are formed in the surfaces of the wing edge fixing pieces.

Preferably, at least two mounting rods are arranged, and the mounting rods are arranged at equal angles.

Compared with the prior art, the utility model has the following beneficial effects:

in the scheme, the explosion-proof membrane of the low-pressure cylinder of the steam turbine is modified and replaced by a common aluminum plate, and the lead plate is replaced by a lead plate, so that the lead plate is difficult to rust in a water vapor environment compared with the aluminum plate, has good corrosion resistance and scouring resistance to water vapor, and can prolong the service life of the explosion-proof membrane of the low-pressure cylinder of the steam turbine after being replaced by the lead plate, thereby ensuring the safe and stable operation of a unit;

in this scheme, fix the lead plate rupture disk in the rupture disk shell through setting up positioning mechanism, when the lead plate rupture disk needs to dismantle, take down the back with fastening nut from the double-screw bolt earlier, rethread mounting panel pulling installation pole takes out movable ring spare from the lead plate rupture disk, can conveniently take out the lead plate rupture disk from the rupture disk shell like this, made things convenient for staff's operation, also made things convenient for the installation of lead plate rupture disk simultaneously.

Drawings

FIG. 1 is a front sectional view of an anti-corrosion low pressure cylinder rupture disk of a steam turbine according to the present utility model;

FIG. 2 is a schematic diagram of a positioning mechanism of an anti-corrosion steam turbine low pressure cylinder rupture disk of the present utility model;

FIG. 3 is a schematic view of the structure of the present utility model mounted on a low pressure cylinder of a steam turbine.

In the figure: the device comprises a winged edge fixing piece 1, a stud 2, a mounting plate 3, a fastening nut 4, a screw hole 5, a mounting rod 6, an explosion-proof membrane shell 7, a movable ring piece 8, a fixed ring piece 9, a first sealing rubber ring 10, a lead plate explosion-proof membrane 11, a low-pressure cylinder 12 of a steam turbine and a second sealing rubber ring 13.

Detailed Description

The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.

The anti-corrosion steam turbine low pressure cylinder explosion-proof membrane shown in the figures 1-3 comprises an explosion-proof membrane shell 7, a lead plate explosion-proof membrane 11 is arranged in the explosion-proof membrane shell 7 in a matched mode, the lead plate explosion-proof membrane 11 is harder to rust than an aluminum plate in a water vapor environment, has good anti-corrosion and scouring performance on water vapor, can prolong the service life of the steam turbine low pressure cylinder explosion-proof membrane after being replaced by a lead plate material, and ensures safe and stable operation of a unit.

A positioning mechanism is arranged between the lead plate explosion-proof membrane 11 and the explosion-proof membrane shell 7, the positioning mechanism comprises a fixed circular ring piece 9 and a plurality of studs 2, the fixed circular ring piece 9 is matched and fixed in the explosion-proof membrane shell 7, the lead plate explosion-proof membrane 11 is placed at the top of the fixed circular ring piece 9, a movable circular ring piece 8 is arranged above the fixed circular ring piece 9, the bottom of the movable circular ring piece 8 is contacted with the top of the lead plate explosion-proof membrane 11, a plurality of mounting rods 6 are mounted on the top of the movable circular ring piece 8 through screws, mounting plates 3 are mounted on the top of the plurality of mounting rods 6 through screws, one ends of the plurality of studs 2 are welded at the end parts of the explosion-proof membrane shell 7, one ends of the plurality of mounting plates 3 are movably sleeved on the surfaces of the plurality of studs 2, one ends of the plurality of studs 2 are sleeved with fastening nuts 4, and the surfaces of the fastening nuts 4 are contacted with the surfaces of the mounting plates 3; the mounting rods 6 are at least two, and the mounting rods 6 are arranged at equal angles; when the lead plate explosion-proof film 11 is detached, the fastening nut 4 is rotated firstly, the fastening nut 4 is taken out from the stud 2, the mounting plate 3 is taken out from the stud 2, the mounting rod 6 is pulled simultaneously, the movable ring piece 8 is pulled by the mounting rod 6 to be taken out from the lead plate explosion-proof film 11, and after the movable ring piece 8 is taken out from the explosion-proof film shell 7, the lead plate explosion-proof film 11 can be taken out from the explosion-proof film shell 7 conveniently.

The bottom of the explosion-proof membrane shell 7 is adhered with a first sealing rubber ring 10, when the explosion-proof membrane shell 7 is installed on the shell of the low-pressure cylinder 12 of the steam turbine, the first sealing rubber ring 10 is in contact with the surface of the shell of the low-pressure cylinder 12 of the steam turbine, and the tightness of connection between the explosion-proof membrane shell 7 and the low-pressure cylinder 12 of the steam turbine is improved.

The top of the fixed ring piece 9 is adhered with a second sealing rubber ring 13, and the top of the second sealing rubber ring 13 is contacted with the bottom of the lead plate explosion-proof membrane 11; the second sealing rubber ring 13 improves the tightness of the contact between the fixed ring member 9 and the lead plate explosion-proof membrane 11.

The top and bottom side edges of the rupture membrane housing 7 are fixedly sleeved with wing edge fixing pieces 1, a plurality of screw holes 5 are formed in the surfaces of the wing edge fixing pieces 1, screws penetrate through the screw holes 5 and are installed in reserved screw holes of the turbine low pressure cylinder 12 housing in a threaded mode, and the connection stability between the rupture membrane housing 7 and the turbine low pressure cylinder 12 is achieved.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an anticorrosive steam turbine low pressure jar rupture disk, includes rupture disk shell (7), its characterized in that, the inside matching of rupture disk shell (7) is equipped with lead plate rupture disk (11), be equipped with positioning mechanism between lead plate rupture disk (11) and the rupture disk shell (7), positioning mechanism includes fixed ring spare (9) and a plurality of double-screw bolt (2), the inside at rupture disk shell (7) is fixed in the matching of fixed ring spare (9), the top at fixed ring spare (9) is placed in lead plate rupture disk (11), the top of fixed ring spare (9) is equipped with movable ring spare (8), the bottom of movable ring spare (8) is contacted with the top of lead plate rupture disk (11), the top of movable ring spare (8) is through screw-mounting a plurality of installation pole (6), a plurality of install mounting panel (3) through the screw, a plurality of the one end of double-screw bolt (2) all welds in the tip of rupture disk shell (7), a plurality of mounting panel (3) are equipped with one end of a plurality of screw bolts (3) all the surface of screw bolt (4) is equipped with one end (4) and one end of the equal surface of screw bolt (4).

2. The anti-corrosion low pressure cylinder rupture disk of a steam turbine according to claim 1, wherein the bottom of the rupture disk housing (7) is bonded with a first sealing rubber ring (10).

3. The anti-corrosion low-pressure cylinder explosion-proof membrane for steam turbines according to claim 1, wherein a second sealing rubber ring (13) is adhered to the top of the fixed circular ring member (9), and the top of the second sealing rubber ring (13) is in contact with the bottom of the lead plate explosion-proof membrane (11).

4. The anti-corrosion low-pressure cylinder rupture disk of a steam turbine according to claim 1, wherein wing edge fixing pieces (1) are fixedly sleeved at the top end side and the bottom end side of the rupture disk shell (7), and a plurality of screw holes (5) are formed in the surface of each wing edge fixing piece (1).

5. An anti-corrosion low pressure cylinder rupture disk for a steam turbine according to claim 1, wherein said mounting rods (6) are provided in at least two, and said mounting rods (6) are arranged at equal angles.