CN110469406B

CN110469406B - Manufacturing method of gas inlet device of gas turbine

Info

Publication number: CN110469406B
Application number: CN201910721115.2A
Authority: CN
Inventors: 陈华; 汪久文; 陈树良
Original assignee: Sichuan Cuntian Machinery Manufacturing Co ltd
Current assignee: Sichuan Cuntian Machinery Manufacturing Co ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2021-06-29
Anticipated expiration: 2039-08-06
Also published as: CN110469406A

Abstract

The invention discloses a manufacturing method of a gas turbine air inlet device, which comprises a pretreatment assembly, a reducing assembly, a horizontal pipe section, a steering pipe section and a vertical pipe section which are sequentially arranged along the air inlet direction; the pretreatment assembly comprises a plurality of pretreatment units, each pretreatment unit comprises a water blocking assembly, a filtering assembly, a cooling assembly and a silencing assembly, which are sequentially arranged along the air inlet direction, and the installation position of the device is determined through a; b. installing a horizontal pipe section, a vertical pipe section and a pretreatment assembly; c. installing a reducing assembly, and communicating the pretreatment assembly and the horizontal pipe section by using the reducing assembly; d. and installing a steering pipe section, and manufacturing by using the steps of connecting the steering pipe section with the horizontal pipe section and the vertical pipe section. The invention is convenient for component models, modular construction, high in standardization degree and short in construction period.

Description

Manufacturing method of gas inlet device of gas turbine

Technical Field

The invention relates to the field of gas turbine air inlet devices, in particular to a manufacturing method of a gas turbine air inlet device.

Background

The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine. Gas turbines are increasingly used as high efficiency internal combustion engines.

In the case of a large-sized gas turbine, it is necessary to pressurize intake air and then burn the intake air, and a large flow rate of the intake air is required, and in the case of the intake air, it is necessary to reduce the humidity of the intake air, the dust concentration, and the like, and in the case of processing the intake air, it is necessary to take into consideration vibration, noise, and the like due to the friction of the intake air.

In the process of construction, the equipment is large in size and inconvenient to manufacture, and the number of pretreatment links of the equipment is large, so that each pretreatment link can influence the flow resistance, and further the difficulty of model construction is increased.

Disclosure of Invention

The invention aims to provide a manufacturing method of a gas inlet device of a gas turbine, which is convenient for component models, modular construction, high in standardization degree and short in construction period.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

the invention discloses a manufacturing method of a gas turbine air inlet device, which comprises the following steps:

a. determining a device installation position;

b. installing a horizontal pipe section, a vertical pipe section and a pretreatment assembly;

c. installing a reducing assembly, and communicating the pretreatment assembly and the horizontal pipe section by using the reducing assembly;

d. installing a steering pipe section, and connecting a horizontal pipe section and a vertical pipe section by using the steering pipe section;

manufacturing a pretreatment assembly:

i. manufacturing a water blocking assembly, a filtering assembly, a cooling assembly and a silencing assembly;

ii, welding and fixedly connecting the water blocking assembly, the filtering assembly, the cooling assembly and the silencing assembly in sequence to form a pretreatment unit;

stacking a plurality of pretreatment units along the horizontal direction and/or the vertical direction and then fixedly connecting the pretreatment units;

when the steering pipe section is installed, a buffer gasket is arranged at the outlet of the steering pipe section to compensate displacement deviation.

Preferably, the water blocking assembly, the filtering assembly, the cooling assembly and the noise reduction assembly all use the same size frame when manufactured.

Preferably, the water blocking assembly is manufactured by a process comprising:

a. a first water blocking device is arranged on the side surface facing the air inlet direction, and a second water blocking device is arranged in the frame;

b. and a rain shade is fixedly welded on the outer part of the side surface facing the air inlet direction.

Preferably, the manufacturing process of the cooling module includes:

a. fixedly connecting a bottom plate on the bottom surface of the frame in a welding manner;

b. arranging a plurality of cooling pipes in an array and then communicating and fixing the cooling pipes in a series or parallel mode;

c. a plurality of cooling pipes are integrally installed in the frame.

Preferably, the manufacturing process of the filter assembly comprises:

a. a clamping groove for placing the filter plate is welded in the frame;

b. welding the partition plate with the clamping groove;

c. a filter plate is installed.

Preferably, the variable diameter assembly mounting step:

a. welding the head of the support main beam at the edge of the outlet of the pretreatment assembly;

b. welding the tail part of the main supporting beam at the edge of the inlet of the horizontal pipe section;

c. the middle part of the main beam is connected and supported between the corresponding head part and the tail part in a welding way;

d. welding a horizontal or vertical support rod in the reducing assembly;

e. welding a support secondary beam;

d. and (6) welding the shell.

Preferably, in step b, the cooling module is installed at the inlet end of the horizontal pipe section.

Preferably, in step d, a sound attenuating assembly is installed at the outlet end.

Preferably, the horizontal pipe section is repaired by repair welding after releasing residual stress in a high-temperature environment before installation.

Preferably, the air inlet device is integrally sprayed with paint after the step d.

The invention has the beneficial effects that:

1. the invention adopts modular construction and has short construction period.

2. The invention can be constructed at multiple stages simultaneously, and the adaptability among the sections is good.

3. The invention has high standardization degree and convenient manufacture.

4. The invention has the advantages that the factors mainly influencing the flow resistance are preposed, and the model calculation is convenient.

Drawings

FIG. 1 is a schematic illustration of a gas turbine air induction unit;

FIG. 2 is a schematic view of a water blocking assembly frame;

FIG. 3 is a side cross-sectional view of the water blocking assembly;

FIG. 4 is a top cross-sectional view of the water blocking assembly;

FIG. 5 is a schematic view of a filter assembly frame;

FIG. 6 is a side cross-sectional view of the filter assembly;

FIG. 7 is a cross-sectional view of a filter plate;

FIG. 8 is a schematic view of a cooling module frame;

FIG. 9 is a schematic view of a cooling tube;

FIG. 10 is a schematic view of a muffler assembly;

FIG. 11 is a schematic view of a reducing assembly.

In the figure: 1-a pretreatment unit, 2-a diameter-changing assembly, 201-a support main beam, 202-a support secondary beam, 203-a support rod, 3-a horizontal pipe section, 4-a steering pipe section, 5-a vertical pipe section, 6-a frame, 7-a water-blocking assembly, 701-a first water baffle, 702-a rain shade, 703-a second water baffle, 704-a one-way door and 8-a filtering assembly, 801-filter plate, 802-partition plate, 803-ash outlet, 804-grid plate, 805-filter material, 9-cooling component, 901-cooling pipe, 902-fin, 903-bottom plate, 904-liquid outlet, 905-water inlet, 906-water outlet, 10-silencing component, 1001-silencing plate and 11-buffer gasket.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.

As shown in fig. 1 to 11, the gas inlet device of the gas turbine comprises a pretreatment assembly, a diameter-variable assembly 2, a horizontal pipe section 3, a steering pipe section 4 and a vertical pipe section 5 which are sequentially arranged along the gas inlet direction; the pretreatment assembly comprises a plurality of pretreatment units 1 which are stacked along the horizontal direction and/or the vertical direction, the adjacent pretreatment units 1 are fixedly connected with each other, and the pretreatment unit 1 comprises a water blocking assembly 7, a filtering assembly 8, a cooling assembly 9 and a silencing assembly 10 which are sequentially arranged along the air inlet direction; the water blocking assembly 7 comprises a frame 6, the surface of the water blocking assembly 7 facing the air inlet direction is an air inlet surface, a first water blocking device is arranged in the air inlet surface and comprises a plurality of first water baffles 701, a rain shade 702 is further arranged outside the air inlet surface, and an opening of the rain shade 702 faces downwards; the filtering assembly 8 comprises a frame 6, a plurality of filtering plates 801 are arranged in the frame 6, the filtering plates 801 are horizontally arranged, the filtering plates 801 are arranged at equal intervals in the vertical direction, partition plates 802 are arranged between every two adjacent filtering plates 801, the partition plates 802 are obliquely arranged, the adjacent partition plates 802 are parallel to each other, the adjacent partition plates 802 form air inlet channels, two long sides of each filtering plate 801 are fixedly connected with the air inlet channels respectively, and an ash outlet 803 is arranged on the bottom surface of the former assembly; the cooling assembly 9 comprises a frame 6, a plurality of cooling pipes 901 are arranged in the frame 6, the cooling pipes 901 are distributed in an array manner, and the plurality of cooling pipes 901 are arranged in series or in parallel; the silencing assembly 10 comprises a frame 6, a plurality of silencing boards 1001 are arranged in the silencing frame 6, a reducing pipeline comprises a framework, the framework is composed of supporting main beams 201 and supporting auxiliary beams 202, an outer shell plate is arranged between every two adjacent supporting main beams 201 and fixedly connected with the middle part of the supporting main beams 201 in the height direction, the inlet end and the outlet end of the reducing pipeline are both square, a plurality of supporting rods 203 are arranged in the reducing pipeline, the sectional area of the inlet of the reducing pipeline is larger than that of the outlet, a cooling assembly 9 is also arranged at the outlet of the reducing pipeline, a bottom plate 903 is arranged at the bottom of the frame 6 of the cooling assembly 9, a liquid outlet 904, a water inlet 905 and a water outlet 906 are arranged on the bottom plate 903, a plurality of vertically arranged cooling pipes 901 are arranged in the cooling frame 6, the two ends of each cooling pipe 901 are respectively communicated with the water inlet 905 and the water outlet 906, the filter plate 801 comprises two grid plates 804, a filter material 805 is arranged between the grid plates 804, the turning angle of the turning pipe section 4 is 90 degrees, the outlet end of the turning pipe section 4 is provided with a silencing component 10, the sectional area of the turning part of the turning pipe section 4 is larger than that of an air inlet, a buffer gasket 11 is arranged between the turning pipe section 4 and a vertical pipe section 5, the sizes of the water blocking components 7, the filter component 8, the cooling component 9 and the framework 6 of the silencing component 10 are the same, the first water blocking device comprises a plurality of horizontally arranged first water blocking plates 701, the plurality of first water blocking plates 701 are distributed at equal intervals along the vertical direction, the inlet of an air inlet channel formed by the adjacent first water blocking plates 701 is lower than the outlet, a second water blocking device is further arranged in the water blocking component 7 and is parallel to the first water blocking device, the second water blocking device comprises a plurality of vertically arranged second water blocking plates 703, the plurality of second water blocking, the second water blocking plate 703 is of an in type, the rain shade 702 is of a triangular prism shape, and the bottom surface of the water blocking assembly 7 is provided with a one-way door 704 for draining water and ash.

During actual use, the inlet air firstly passes through the two-stage water blocking device of the water blocking component 7 in the pretreatment unit 1 to remove most of liquid water in the inlet air, then passes through the filtering component 8, the filtering component 8 adopts the horizontally arranged filtering plate 801, the requirements of large filtering area/device volume ratio and good filtering effect are met, and then the steam in the inlet air is cooled through the cooling component 9, so that the humidity of the inlet air is further reduced;

the invention adopts the L-shaped air inlet channel, can meet the compact arrangement of a factory building and avoid the waste of space.

A method of manufacturing a gas turbine inlet assembly, comprising the steps of:

a. determining a device installation position;

b. installing a horizontal pipe section 3, a vertical pipe section 5 and a pretreatment assembly;

c. installing a reducing assembly 2, and communicating the pretreatment assembly with a horizontal pipe section 3 by using the reducing assembly 2;

d. installing a steering pipe section 4, and connecting a horizontal pipe section 3 and a vertical pipe section 5 by using the steering pipe section 4;

manufacturing a pretreatment assembly:

i. manufacturing a water blocking component 7, a filtering component 8, a cooling component 9 and a silencing component 10;

ii, the water blocking component 7, the filtering component 8, the cooling component 9 and the silencing component 10 are welded and fixedly connected in sequence to form

A pretreatment unit 1;

iii, stacking a plurality of pretreatment units 1 along the horizontal direction and/or the vertical direction and then fixedly connecting the pretreatment units;

when the steering pipe section 4 is installed, a buffer gasket 11 is arranged at the outlet of the steering pipe section 4, and the displacement is deviated

And (4) line compensation.

Preferably, the water blocking assembly 7, the filter assembly 8, the cooling assembly 9, and the sound attenuating assembly 10 all use the same size frame 6 at the time of manufacture.

Preferably, the manufacturing process of the water blocking assembly 7 comprises:

a. a first water blocking device is arranged on the side surface facing the air inlet direction, and a second water blocking device is arranged in the frame 6;

b. the rain shade 702 is welded and fixedly connected to the outside of the side surface facing the air intake direction.

Preferably, the manufacturing process of the cooling assembly 9 comprises:

a. fixedly connecting a bottom plate 903 on the bottom surface of the frame 6 in a welding manner;

b. a plurality of cooling pipes 901 are arranged in an array and then communicated and fixed in a series or parallel mode;

c. the plurality of cooling pipes 901 are integrally incorporated in the frame 6.

Preferably, the manufacturing process of the filter assembly 8 comprises:

a. a clamping groove for placing the filter plate 801 is welded in the frame 6;

b. the partition plate 802 is welded with the clamping groove;

c. a filter plate 801 is installed.

Preferably, the variable diameter assembly 2 is installed:

a. the head of the main support beam 201 is welded at the edge of the outlet of the pretreatment assembly;

b. the tail of the main supporting beam 201 is welded at the edge of the inlet of the horizontal pipe section 3;

c. the middle part of the main beam 201 is connected and supported between the corresponding head part and the tail part in a welding way;

d. a horizontal or vertical support rod 203 is welded in the reducing assembly 2;

e. welding the support secondary beam 202;

d. and (6) welding the shell.

Preferably, in step b, the cooling module 9 is installed at the inlet end of the horizontal pipe section 3.

Preferably, in step d, the noise attenuating assembly 10 is installed at the outlet end.

Preferably, the horizontal pipe section 3 is repaired by repair welding after releasing residual stress in a high-temperature environment before installation.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

Claims

1. A method of manufacturing a gas turbine inlet assembly, comprising the steps of:

a. determining a device installation position;

b. installing a horizontal pipe section (3), a vertical pipe section (5) and a pretreatment assembly;

c. installing a reducing assembly (2), and communicating the pretreatment assembly with the horizontal pipe section (3) by using the reducing assembly (2);

d. installing a steering pipe section (4), and connecting the horizontal pipe section (3) and the vertical pipe section (5) by using the steering pipe section (4);

manufacturing a pretreatment assembly:

i. manufacturing a water blocking assembly (7), a filtering assembly (8), a cooling assembly (9) and a silencing assembly (10);

ii, welding and fixedly connecting the water blocking assembly (7), the filtering assembly (8), the cooling assembly (9) and the silencing assembly (10) in sequence to form a pretreatment unit (1);

iii, stacking a plurality of pretreatment units (1) along the horizontal direction and/or the vertical direction and then fixedly connecting the pretreatment units;

when the steering pipe section (4) is installed, a buffer gasket (11) is arranged at the outlet of the steering pipe section (4) to compensate displacement deviation;

the water blocking component (7), the filtering component (8), the cooling component (9) and the silencing component (10) all use the frame (6) with the same size when being manufactured;

the manufacturing process of the water blocking assembly (7) comprises:

a. a first water blocking device is arranged on the side surface facing the air inlet direction, and a second water blocking device is arranged in the frame (6);

b. and a rain shade (702) is fixedly welded on the outer side of the side surface facing to the air inlet direction.

2. The manufacturing method according to claim 1, characterized in that:

the manufacturing process of the cooling assembly (9) comprises:

a. a bottom plate (903) is fixedly connected to the bottom surface of the frame (6) in a welding mode;

b. a plurality of cooling pipes (901) are arranged in an array and then communicated and fixed in a serial or parallel mode;

c. a plurality of cooling pipes 901 are integrally installed in a frame 6.

3. The manufacturing method according to claim 1, characterized in that:

the manufacturing process of the filter assembly (8) comprises:

a. a clamping groove for placing the filter plate (801) is welded in the frame (6);

b. the partition plate (802) is connected with the clamping groove in a welding mode;

c. a filter plate (801) is installed.

4. The manufacturing method according to claim 1, characterized in that:

the installation step of the reducing assembly (2):

a. the head of a main supporting beam (201) is welded at the edge of the outlet of the pretreatment assembly;

b. the tail of the main beam (201) is welded and supported at the edge of the inlet of the horizontal pipe section (3);

c. the middle part of a main supporting beam (201) is welded between the corresponding head part and the tail part;

d. a horizontal or vertical support rod (203) is welded in the reducing assembly (2);

e. welding a support secondary beam (202);

d. and (6) welding the shell.

5. The manufacturing method according to claim 1, characterized in that: in step b, the cooling assembly (9) is installed at the inlet end of the horizontal pipe section (3).

6. The manufacturing method according to claim 1, characterized in that: in step d, the sound attenuating assembly (10) is mounted at the outlet end.

7. The manufacturing method according to claim 1, characterized in that: and (3) before installation, the horizontal pipe section is repaired by repair welding after residual stress is released in a high-temperature environment.

8. The manufacturing method according to claim 1, characterized in that: and d, spraying paint on the whole air inlet device after the step d.