Rapid warm-up impact rotation device for sintering steam-electricity double-drive steam turbine

Abstract

The utility model relates to a rapid warm-up impact rotation device for a sintering steam-electricity double-drive turbine, and belongs to the technical field of metallurgical production equipment. According to the technical scheme, a first bleeder (1) is vertically arranged, the top end of the first bleeder (1) extends to the top of a plant and is provided with a silencer (6), the bottom end of the first bleeder (1) is sequentially connected with a first 90-degree hot-pressing elbow (2), a second bleeder (7), a second 90-degree hot-pressing elbow (12), a third bleeder (8), a fourth bleeder (9) and a fifth bleeder (10), and the fifth bleeder (10) is connected with a main steam pipeline (11) through a hot-pressing tee joint (3); an electric control valve (4) is arranged between the bleeder III and the bleeder IV; and a manual gate valve (5) is arranged between the bleeder IV and the bleeder V. The utility model has the beneficial effects that the temperature in front of and behind the door of the steam turbine can quickly meet the parameter requirement of the impulse steam temperature, the starting time of the steam turbine can be greatly shortened, the meshing time is shortened, the steam and water consumption is reduced, and the production operation rate of the sintering steam drag is improved.

Description

Technical Field

[0001] The utility model relates to a rapid warm-up and running device for a sintering steam-electric dual-drive steam turbine, belonging to the technical field of metallurgical production equipment. Background Art

[0002] The total length of the steam pipeline from the annular cooling boiler to the steam turbine is 250 meters. The steam pipeline drain in front of the turbine steam inlet is a DN32 valve pipeline. The boiler generates steam after sintering production. During the warm-up period, the steam can only be depressurized in the drain, but the small amount of drain pressure relief leads to overpressure in the boiler header. The boiler header needs to be opened to release the pressure. Opening the pressure relief will cause most of the superheated steam to be discharged directly from the boiler header release pipe, and the steam temperature in front of the turbine door rises slowly. The sintering steam-electric dual-drive steam turbine needs to release the boiler for a long time every time it resumes production to reach the steam temperature and pressure required for the turbine to start. Long-term release not only causes a large amount of steam and water consumption, but also prolongs the turbine startup time and reduces the production operation rate of the sintering steam-driven turbine. Utility Model Content

[0003] The utility model aims to provide a rapid warm-up and start-up device for a sintering steam-electric dual-drive steam turbine, which utilizes the discharge at the end of the main steam inlet pipe of the steam turbine to control the boiler steam pressure and reduce the warm-up time. It can greatly shorten the turbine start-up time, speed up the engagement time, reduce the steam and water consumption, and solve the problems existing in the background technology.

[0004] The technical solution of the utility model is:

[0005] A sintering steam-electric dual-drive steam turbine rapid warm-up and start-up device comprises a vent pipe 1, a 90° hot-pressed elbow 1, a 90° hot-pressed elbow 2, a hot-pressed tee, an electric regulating valve, a manual gate valve, a muffler, a vent pipe 2, a vent pipe 3, a vent pipe 4 and a vent pipe 5. The vent pipe 1 is vertically arranged, with the top end extending to the top of the factory building and a muffler installed, and the bottom end is connected with the 90° hot-pressed elbow 1, the vent pipe 2, the 90° hot-pressed elbow 2, the vent pipe 3, the vent pipe 4 and the vent pipe 5 in sequence, and the vent pipe 5 is connected to the main steam pipeline through the hot-pressed tee; an electric regulating valve is arranged between the vent pipe 3 and the vent pipe 4, and a manual gate valve is arranged between the vent pipe 4 and the vent pipe 5.

[0006] The vent pipe one, vent pipe two, vent pipe three, vent pipe four and vent pipe five are all seamless steel pipes, and the lengths of the vent pipe one, vent pipe two, vent pipe three, vent pipe four and vent pipe five are 22 meters, 1 meter, 1.5 meters, 0.8 meters and 0.3 meters respectively.

[0007] The discharge pipe four is connected to the inner wall of the factory building through a spring hanger one; the discharge pipe one is connected to the inner wall of the factory building through a spring hanger two, a fixed bracket, a spring hanger three and a guide bracket.

[0008] The utility model is arranged in front of the isolation valve of the main steam pipeline of the steam turbine, and utilizes the release in front of the isolation valve of the steam turbine to control the boiler steam pressure, and no longer releases it from the boiler header, so that all superheated steam can quickly reach the front of the steam turbine door through the main steam pipeline, so that the temperature in front of and behind the steam turbine door can quickly reach the start-up steam temperature parameter requirements.

[0009] When the utility model is in use, the manual gate valve is in a normally open state, and the electric regulating valve realizes remote computer operation through a program.

[0010] The beneficial effects of the utility model are: the temperature before and after the turbine door can quickly reach the steam temperature parameter requirements, which can greatly shorten the turbine startup time, speed up the engagement time, reduce steam and water consumption, and improve the production operation rate of sintering steam drag. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the front view of the utility model;

[0012] Figure 2 It is a side view of the utility model;

[0013] In the figure: vent pipe 1, 90° hot press elbow 1, 2, hot press tee 3, electric regulating valve 4, manual gate valve 5, muffler 6, vent pipe 2, 7, vent pipe 3, 8, vent pipe 4, 9, vent pipe 5, 10, main steam pipeline 11, 90° hot press elbow 2, 12, spring hanger 1, 13, spring hanger 2, 14, fixed bracket 15, spring hanger 3, 16, guide bracket 17. DETAILED DESCRIPTION

[0014] The present invention will be further described below through examples in conjunction with the accompanying drawings.

[0015] A sintering steam-electric dual-drive steam turbine rapid warm-up and start-up device comprises a vent pipe 1, a 90° hot-pressed elbow 2, a 90° hot-pressed elbow 2 12, a hot-pressed tee 3, an electric regulating valve 4, a manual gate valve 5, a muffler 6, a vent pipe 2 7, a vent pipe 3 8, a vent pipe 4 9 and a vent pipe 5 10. The vent pipe 1 is vertically arranged, with the top end extending to the top of the plant building and the muffler 6 installed, and the bottom end is connected with the 90° hot-pressed elbow 2, the vent pipe 2 7, the 90° hot-pressed elbow 2 12, the vent pipe 3 8, the vent pipe 4 9 and the vent pipe 5 10 in sequence, and the vent pipe 5 10 is connected to the main steam pipeline 11 through the hot-pressed tee 3; an electric regulating valve 4 is arranged between the vent pipe 3 8 and the vent pipe 4 9, and a manual gate valve 5 is arranged between the vent pipe 4 9 and the vent pipe 5 10.

[0016] The vent pipe 1, vent pipe 2 7, vent pipe 3 8, vent pipe 4 9 and vent pipe 5 10 are all seamless steel pipes, the specifications of the seamless steel pipes are φ159×4.5, and the lengths of the vent pipe 1, vent pipe 2 7, vent pipe 3 8, vent pipe 4 9 and vent pipe 5 10 are 22 meters, 1 meter, 1.5 meters, 0.8 meters and 0.3 meters respectively.

[0017] The discharge pipe four 9 is connected to the inner wall of the factory building through a spring hanger one 13; the discharge pipe one 1 is connected to the inner wall of the factory building through a spring hanger two 14, a fixed bracket 15, a spring hanger three 16 and a guide bracket 17.

[0018] In the present embodiment, a sintered steam-electric dual-drive steam turbine rapid warm-up and start-up device comprises a 22-meter-long, a 0.3-meter-long, a 0.8-meter-long, a 1-meter-long and a 1.5-meter-long φ198×4.5 seamless steel pipe, which is connected to the main steam pipeline through a DN300×150 (PN4.0) hot-pressed tee, first connected to a DN150 (PN40) manual gate valve, and then connected to a DN150 (PN40) electric regulating valve to form a relief pipeline, and the steam relief switch is realized through the DN150 (PN40) manual gate valve and the DN150 (PN40) electric regulating valve, and then the relief pipeline is vertically extended to the top of the plant through two 90° hot-pressed elbows (PN40), and a silencer is installed at the end of the relief pipeline to reduce noise.

[0019] The utility model is arranged in front of the isolation valve of the steam pipeline of the steam turbine (that is, the end of the main steam pipeline), and utilizes the release in front of the isolation valve of the steam turbine to control the boiler steam pressure, and no longer releases from the boiler header, so that all superheated steam can quickly reach the front of the steam turbine door through the main steam pipeline, so that the temperature in front of and behind the steam turbine door can quickly reach the rush steam temperature parameter requirements, which can greatly shorten the turbine startup time, speed up the engagement time, reduce the large amount of steam and water consumption wasted by traditional boiler release, and improve the production operation rate of sintering steam drag.

[0020] When the utility model is in use, the manual gate valve is in a normally open state, and the electric regulating valve is remotely operated by a computer through a program. In sintering production, when the boiler starts to produce steam, the electric regulating valve is opened by 50%, and the fan operator adjusts the opening size of the electric regulating valve to control the pipeline pressure to maintain about 0.9MPa, so that the superheated steam generated by the boiler is discharged from the newly added venting pipeline, avoiding the automatic opening of the safety valve due to overpressure in the boiler header or the overpressure opening of the header to release the pressure. After the turbine is engaged, the main steam pipeline pressure is controlled (1.3MPa-1.4MPa), and the opening of the electric regulating valve is gradually reduced until it is completely closed. After the electric regulating valve is closed, the turbine is adjusted normally.

Claims

1. A rapid warm-up and start-up device for a sintering steam-electric dual-drive steam turbine, characterized in that: The invention comprises a discharge pipe 1 (1), a 90° hot press elbow 1 (2), a 90° hot press elbow 2 (12), a hot press tee (3), an electric regulating valve (4), a manual gate valve (5), a muffler (6), a discharge pipe 2 (7), a discharge pipe 3 (8), a discharge pipe 4 (9) and a discharge pipe 5 (10). The discharge pipe 1 (1) is vertically arranged, with the top end extending to the top of the plant building and a muffler (6) installed, and the bottom end is connected to the 90° hot press elbow 1 (2), the discharge pipe 2 (7), the 90° hot press elbow 2 (12), the discharge pipe 3 (8), the discharge pipe 4 (9) and the discharge pipe 5 (10) in sequence, and the discharge pipe 5 (10) is connected to the main steam pipeline (11) through the hot press tee (3); an electric regulating valve (4) is arranged between the discharge pipe 3 (8) and the discharge pipe 4 (9), and a manual gate valve (5) is arranged between the discharge pipe 4 (9) and the discharge pipe 5 (10).

2. The rapid warm-up and start-up device for a sintering steam-electric dual-drive steam turbine according to claim 1 is characterized in that: The vent pipe 1 (1), vent pipe 2 (7), vent pipe 3 (8), vent pipe 4 (9) and vent pipe 5 (10) are all seamless steel pipes.

3. The rapid warm-up and start-up device for a sintering steam-electric dual-drive steam turbine according to claim 2 is characterized in that: The lengths of the vent pipe 1 (1), vent pipe 2 (7), vent pipe 3 (8), vent pipe 4 (9) and vent pipe 5 (10) are 22 meters, 1 meter, 1.5 meters, 0.8 meters and 0.3 meters respectively.

4. A sintering steam-electric dual-drive steam turbine rapid warm-up and start-up device according to claim 1 or 2, characterized in that: The discharge pipe 4 (9) is connected to the inner wall of the factory building through the spring hanger 1 (13); the discharge pipe 1 (1) is connected to the inner wall of the factory building through the spring hanger 2 (14), the fixed bracket (15), the spring hanger 3 (16) and the guide bracket (17).

Images