Energy-saving device for quickly starting steam turbine

Abstract

The utility model provides an energy-saving device for quickly starting a steam turbine, and relates to the technical field of steam turbines. Two groups of guide rods are fixed at the left and right ends of the fixed frame, a movable frame is movably arranged on the guide rods, threaded rods are mounted at the left and right ends of the fixed frame through bearings, four groups of sliding barrels are mounted on the movable frame through bolts, the sliding barrels slide on the guide rods, and threaded barrels are mounted at the left and right ends of the movable frame through bolts; the steam pipe is heated through the heater, the heating time of the main steam pipe is shortened, the starting speed of the steam turbine is increased, the impulse rotation waiting time of the steam turbine is greatly shortened, and the starting energy consumption of a unit is reduced; the steam pipe is clamped by the clamping block through the telescopic hydraulic rod, the fixation degree of the steam pipe is improved, the heater can move front and back on the steam pipe by operating the double-head motor, the heater can move left and right by operating the second motor, the height of the heater can be adjusted by operating the third motor, and the steam pipe is evenly heated by the heater.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to an energy-saving device for quickly starting a steam turbine. Background Art

[0002] A steam turbine is a rotating machine that uses steam as its motive force and converts the thermal energy of steam into mechanical work. It is the most widely used prime mover in modern thermal power plants. Steam turbines have the advantages of large single-unit power, high efficiency, and long life. Due to the limitation of the steam temperature before the main steam valve, the steam turbine has a long waiting time for start-up and cannot be started quickly. Therefore, an energy-saving device for quickly starting a steam turbine is designed.

[0003] The existing steam turbines are limited by the steam temperature before the main steam valve, so the waiting time for the start-up is long and a quick start cannot be achieved. Utility Model Content

[0004] The disclosed embodiment relates to an energy-saving device for quickly starting a steam turbine, so as to solve the problem that the existing steam turbine cannot achieve quick start due to the long waiting time for the start-up due to the limitation of the steam temperature before the main steam valve.

[0005] In a first aspect of the present disclosure, there is provided an energy-saving device for quickly starting a steam turbine, specifically comprising: a fixing frame;

[0006] Two groups of guide rods are fixed on the left and right ends of the fixed frame, a movable frame is movable on the guide rods, and threaded rods are installed on the left and right ends of the fixed frame through bearings, four groups of slide cylinders are installed on the movable frame through bolts, the slide cylinders slide on the guide rods, and threaded cylinders are installed on the left and right ends of the movable frame through bolts, the threaded cylinders are threadedly matched with the threaded rods, two groups of mounting plates are installed on the fixed frame through bolts, a No. 1 motor is installed on the mounting plate through bolts, the output shafts of the two groups of No. 1 motors are respectively connected to the lower ends of the two groups of threaded rods, four groups of threaded seats are arranged on the movable frame, a supporting plate is arranged above the movable frame, the supporting plate is installed on the four groups of threaded seats through bolts, and a spring is installed on the threaded seat.

[0007] In at least some embodiments,

[0008] Two groups of fixing blocks are fixed on the support plate, a base is fixed on the upper end of the fixing block, a top seat is installed on the upper end of the base by bolts, an intermediate cylinder is installed between the base and the top seat, an inclined groove is arranged on the intermediate cylinder, three groups of through grooves are arranged in the inclined groove, and three groups of clamping blocks are installed in the inclined groove, a round rod is fixed on the clamping block, the round rod is located in the three groups of through grooves on the intermediate cylinder, a connecting ring is sleeved on the intermediate cylinder, the connecting ring is fixedly connected to the round rod on the clamping block, a clamping seat is installed on the connecting ring, a hydraulic rod is installed between the clamping seat and the top seat, and a steam pipe is clamped between the two groups of intermediate cylinders, and the steam pipe is connected to the main steam valve of the steam turbine.

[0009] In at least some embodiments,

[0010] An activity beam is provided at the upper end of the fixing frame, and a double-headed motor is fixed at the rear side of the upper end of the fixing frame. Rotating rods are installed at both the front and rear ends of the fixing frame. The rotating rod near the rear side of the fixing frame is connected to the output shaft of the double-headed motor, and two first drive belts are installed between the two groups of rotating rods. The left and right ends of the activity beam are respectively installed with a first fixing piece and a second fixing piece by screws.

[0011] In at least some embodiments,

[0012] Rollers are installed on both the first fixing piece and the second fixing piece. The rollers roll on the upper end of the fixing frame, and the two first drive belts are respectively fixedly connected to the first fixing piece and the second fixing piece. A second motor is installed on the second fixing piece by bolts. A pulley is installed at the left end of the activity beam, and a second drive belt is connected between the output shaft of the second motor and the pulley at the left end of the activity beam.

[0013] In at least some embodiments,

[0014] A moving seat is movable on the activity beam. The second drive belt is fixedly connected to the moving seat, and a fixed shell is fixed on the moving seat.

[0015] In at least some embodiments,

[0016] A gear box is installed on the fixed shell. A third motor is installed on the upper end of the gear box by bolts. A bevel gear is fixed on the output shaft of the gear box. A rail rod is installed at the lower end of the fixed shell by bolts, and a through groove is provided on the rail rod.

[0017] In at least some embodiments,

[0018] A lead screw is installed inside the rail rod through a bearing. A bevel gear is fixed on the lead screw. The bevel gear on the lead screw meshes with the bevel gear on the output shaft of the gear box. A lifting cylinder is movable on the rail rod. A threaded block is provided inside the rail rod. The threaded block is in threaded cooperation with the lead screw. A connecting block is installed on the lifting cylinder by bolts. The connecting block is connected to the threaded block by bolts. A heater is fixed on the lifting cylinder. The heater is sleeved on the steam pipe.

[0019] The utility model provides an energy-saving device for quickly starting a steam turbine, which has the following beneficial effects:

[0020] In the utility model, a heater is fixed on the lifting cylinder, and the heater is sleeved on the steam pipe. The steam pipe is heated by the heater, so as to shorten the warm-up time of the main steam pipe, improve the starting speed of the steam turbine, greatly shorten the waiting time for the steam turbine to rotate impulsively, and reduce the starting energy consumption of the unit.

[0021] In addition, in the present utility model, the clamping block clamps the steam pipe through the telescopic hydraulic rod, improving the fixing degree of the steam pipe. And by operating the double-headed motor, the heater can move back and forth on the steam pipe. By operating the second motor, the heater can move left and right. By operating the third motor, the height of the heater can be adjusted, enabling the heater to uniformly heat the steam pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below.

[0023] The drawings in the following description only relate to some embodiments of the present utility model and do not limit the present utility model.

[0024] In the drawings:

[0025] Figure 1 A schematic diagram showing the overall structure of the present application is shown;

[0026] Figure 2 A magnified structural schematic diagram of part A in the present application is shown; Figure 1 in the present application is shown;

[0027] Figure 3 A schematic diagram showing the structure of the movable frame of the present application is shown;

[0028] Figure 4 A schematic diagram showing the structure of the base of the present application is shown;

[0029] Figure 5 A schematic diagram showing the structure of the middle cylinder of the present application is shown;

[0030] Figure 6 A magnified structural schematic diagram of part B in the present application is shown; Figure 1 in the present application is shown;

[0031] Figure 7 A magnified structural schematic diagram of part C in the present application is shown; Figure 1 in the present application is shown;

[0032] Figure 8 A schematic diagram showing the structure of the track rod of the present application is shown;

[0033] Figure 9 A magnified structural schematic diagram of part D in the present application is shown; Figure 8 in the present application is shown;

[0034] Figure 10 A magnified structural schematic diagram of part E in the present application is shown; Figure 8 in the present application is shown;

[0035] LIST OF REFERENCE NUMERALS

[0036] 1. Fixed frame; 11. Guide rod; 12. Threaded rod; 121. Mounting plate; 122. First motor; 13. Movable frame; 131. Slide cylinder; 132. Threaded cylinder; 133. Threaded seat; 14. Support plate; 141. Fixed block; 142. Base; 143. Top seat; 1431. Hydraulic rod; 144. Intermediate cylinder; 1441. Clamping block; 1442. Connecting ring; 1443. Clamping seat; 15. Steam pipe;

[0037] 2. Double - headed motor; 21. Rotating rod; 211. First transmission belt; 22. Movable beam; 221. First fixing piece; 222. Second fixing piece; 223. Second motor; 224. Second transmission belt; 23. Moving seat; 24. Fixed housing; 241. Gear box; 2411. Third motor; 242. Rail rod; 2421. Lead screw; 2422. Threaded block; 243. Lifting cylinder; 2431. Connecting block;

[0038] 3. Heater. Specific implementation mode

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the described embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present utility model.

[0040] Embodiment 1: Please refer to Figures 1 to 10 :

[0041] The present utility model provides an energy - saving device for quickly starting a steam turbine, including: a fixed frame 1;

[0042] Two groups of guide rods 11 are fixedly installed at both the left and right ends of the fixed frame 1. A movable frame 13 is movable on the guide rods 11. And threaded rods 12 are installed at both the left and right ends of the fixed frame 1 through bearings. Four groups of slide cylinders 131 are installed on the movable frame 13 through bolts. The slide cylinders 131 slide on the guide rods 11. And threaded cylinders 132 are installed at both the left and right ends of the movable frame 13 through bolts. The threaded cylinders 132 are in threaded cooperation with the threaded rods 12. Two groups of mounting plates 121 are installed on the fixed frame 1 through bolts. A first motor 122 is installed on the mounting plates 121 through bolts. The output shafts of the two first motors 122 are respectively connected to the lower ends of the two threaded rods 12. Four groups of threaded seats 133 are arranged on the movable frame 13. A support plate 14 is arranged above the movable frame 13. The support plate 14 is installed on the four threaded seats 133 through bolts. And springs are installed on the threaded seats 133.

[0043] In the embodiments of the present disclosure,

[0044] Two groups of fixing blocks 141 are fixed on the pallet 14. The upper ends of the fixing blocks 141 are fixed with bases 142. The upper ends of the bases 142 are installed with top seats 143 through bolts. An intermediate cylinder 144 is installed between the base 142 and the top seat 143. An inclined groove is provided on the intermediate cylinder 144. Three through grooves are provided in the inclined groove. And three clamping blocks 1441 are installed in the inclined groove. A round rod is fixed on the clamping block 1441. The round rod is located in the three through grooves on the intermediate cylinder 144. A connecting ring 1442 is sleeved on the intermediate cylinder 144. The connecting ring 1442 is fixedly connected with the round rod on the clamping block 1441. A clamping seat 1443 is installed on the connecting ring 1442. A hydraulic rod 1431 is installed between the clamping seat 1443 and the top seat 143. And a steam pipe 15 is clamped between the two intermediate cylinders 144. The steam pipe 15 is connected to the main steam valve of the steam turbine. Its function is: by contracting the hydraulic rod 1431, the clamping seat 1443 drives the three clamping blocks 1441 on the connecting ring 1442 to contract, and the steam pipe 15 is clamped by the three clamping blocks 1441 to improve the fixing degree of the steam pipe 15.

[0045] In the embodiment of the present disclosure,

[0046] An activity beam 22 is provided at the upper end of the fixing frame 1. And a double-headed motor 2 is fixed at the rear side of the upper end of the fixing frame 1. Rotating rods 21 are installed at both the front and rear ends of the fixing frame 1. The rotating rod 21 near the rear side of the fixing frame 1 is connected to the output shaft of the double-headed motor 2. And two first drive belts 211 are installed between the two rotating rods 21. The left and right ends of the activity beam 22 are respectively installed with a first fixing piece 221 and a second fixing piece 222 through screws. Rollers are installed on both the first fixing piece 221 and the second fixing piece 222. The rollers roll on the upper end of the fixing frame 1. Its function is: running the double-headed motor 2 can make the heater 3 move back and forth on the steam pipe 15.

[0047] Embodiment 2, on the basis of Embodiment 1,

[0048] The two first drive belts 211 are respectively fixedly connected to the first fixing piece 221 and the second fixing piece 222. A second motor 223 is installed on the second fixing piece 222 through bolts. A pulley is installed at the left end of the activity beam 22. A second drive belt 224 is connected between the output shaft of the second motor 223 and the pulley at the left end of the activity beam 22. A moving seat 23 is movable on the activity beam 22. The second drive belt 224 is fixedly connected to the moving seat 23. Its function is: running the second motor 223 to make the second drive belt 224 operate can make the heater 3 move left and right.

[0049] Embodiment 3, on the basis of Embodiment 1 and Embodiment 2,

[0050] A fixed housing 24 is fixed on the moving seat 23. A gearbox 241 is installed on the fixed housing 24. A third motor 2411 is installed at the upper end of the gearbox 241 through bolts. A bevel gear is fixed on the output shaft of the gearbox 241. A rail rod 242 is installed at the lower end of the fixed housing 24 through bolts. A through groove is provided on the rail rod 242. A lead screw 2421 is installed inside the rail rod 242 through a bearing. A bevel gear is fixed on the lead screw 2421. The bevel gear on the lead screw 2421 meshes with the bevel gear on the output shaft of the gearbox 241. A lifting cylinder 243 is movable on the rail rod 242. A threaded block 2422 is arranged inside the rail rod 242. The threaded block 2422 is in threaded cooperation with the lead screw 2421. A connecting block 2431 is installed on the lifting cylinder 243 through bolts. The connecting block 2431 is connected to the threaded block 2422 through bolts. A heater 3 is fixed on the lifting cylinder 243. The heater 3 is sleeved on the steam pipe 15. Its function is: running the third motor 2411 to rotate the lead screw 2421, so that the lifting cylinder 243 slides on the rail rod 242, and the height of the heater 3 can be adjusted.

[0051] The working principle of this embodiment: The steam pipe 15 is connected to the main steam valve of the steam turbine. The steam pipe 15 is heated by the heater 3, shortening the warm-up time of the main steam pipe 15, improving the starting speed of the steam turbine, greatly shortening the waiting time for the steam turbine to rotate impulsively, reducing the starting energy consumption of the unit. By contracting the hydraulic rod 1431, the clamping seat 1443 drives the three groups of clamping blocks 1441 on the connecting ring 1442 to contract, and the steam pipe 15 is clamped by the three groups of clamping blocks 1441 to improve the fixing degree of the steam pipe 15. Running the second motor 223 makes the second transmission belt 224 operate, and the heater 3 can be moved left and right. Running the third motor 2411 makes the lead screw 2421 rotate, so that the lifting cylinder 243 slides on the rail rod 242, and the height of the heater 3 can be adjusted, so that the heater 3 uniformly heats the steam pipe 15.

[0052] In this article, the following points need to be noted:

[0053] 1. The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure. Other structures can refer to the general design.

[0054] 2. Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0055] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present disclosure can easily think of changes or substitutions, which should be covered by the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. An energy-saving device for quickly starting a steam turbine, comprising: The fixing frame is characterized in that: Two groups of guide rods are fixed on the left and right ends of the fixed frame, a movable frame is movable on the guide rods, and threaded rods are installed on the left and right ends of the fixed frame through bearings, four groups of slide cylinders are installed on the movable frame through bolts, the slide cylinders slide on the guide rods, and threaded cylinders are installed on the left and right ends of the movable frame through bolts, the threaded cylinders are threadedly matched with the threaded rods, two groups of mounting plates are installed on the fixed frame through bolts, a No. 1 motor is installed on the mounting plate through bolts, the output shafts of the two groups of No. 1 motors are respectively connected to the lower ends of the two groups of threaded rods, four groups of threaded seats are arranged on the movable frame, a supporting plate is arranged above the movable frame, the supporting plate is installed on the four groups of threaded seats through bolts, and a spring is installed on the threaded seat.

2. The energy-saving device for quickly starting a steam turbine according to claim 1, characterized in that: Two groups of fixing blocks are fixed on the support plate, a base is fixed on the upper end of the fixing block, a top seat is installed on the upper end of the base by bolts, an intermediate cylinder is installed between the base and the top seat, an inclined groove is arranged on the intermediate cylinder, three groups of through grooves are arranged in the inclined groove, and three groups of clamping blocks are installed in the inclined groove, a round rod is fixed on the clamping block, the round rod is located in the three groups of through grooves on the intermediate cylinder, a connecting ring is sleeved on the intermediate cylinder, the connecting ring is fixedly connected to the round rod on the clamping block, a clamping seat is installed on the connecting ring, a hydraulic rod is installed between the clamping seat and the top seat, and a steam pipe is clamped between the two groups of intermediate cylinders, and the steam pipe is connected to the main steam valve of the steam turbine.

3. The energy-saving device for quickly starting a steam turbine according to claim 1, characterized in that: A movable beam is provided at the upper end of the fixed frame, and a double-headed motor is fixed to the rear side of the upper end of the fixed frame, rotating rods are installed at the front and rear ends of the fixed frame, the rotating rod close to the rear side of the fixed frame is connected to the output shaft of the double-headed motor, and two groups of No. 1 transmission belts are installed between the two groups of rotating rods, and a No. 1 fixing plate and a No. 2 fixing plate are respectively installed at the left and right ends of the movable beam by screws.

4. The energy-saving device for quickly starting a steam turbine according to claim 3, characterized in that: The No. 1 fixing plate and the No. 2 fixing plate are both equipped with rollers, which roll on the upper end of the fixing frame, and the two sets of No. 1 transmission belts are fixedly connected to the No. 1 fixing plate and the No. 2 fixing plate respectively, a No. 2 motor is installed on the No. 2 fixing plate by bolts, a pulley is installed on the left end of the movable beam, and a No. 2 transmission belt is connected between the output shaft of the No. 2 motor and the pulley at the left end of the movable beam.

5. The energy-saving device for quickly starting a steam turbine according to claim 3, characterized in that: A movable seat is movably arranged on the movable beam, the second transmission belt is fixedly connected to the movable seat, and a fixed shell is fixed on the movable seat.

6. The energy-saving device for quickly starting a steam turbine according to claim 5, characterized in that: A gear box is installed on the fixed shell, a No. 3 motor is installed on the upper end of the gear box through bolts, a bevel gear is fixed on the output shaft of the gear box, a rail rod is installed on the lower end of the fixed shell through bolts, and a through groove is arranged on the rail rod.

7. The energy-saving device for quickly starting a steam turbine according to claim 6, characterized in that: A lead screw is installed inside the rail rod through a bearing, a bevel gear is fixed on the lead screw, the bevel gear on the lead screw is meshed with the bevel gear on the output shaft of the gear box, a lifting cylinder is movable on the rail rod, a threaded block is arranged inside the rail rod, the threaded block cooperates with the thread of the lead screw, a connecting block is installed on the lifting cylinder through bolts, the connecting block is connected to the threaded block through bolts, a heater is fixed on the lifting cylinder, and the heater is sleeved on the steam pipe.

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