Rapid cooling device of steam turbine

Abstract

The utility model belongs to the technical field of steam turbines, and particularly relates to a steam turbine rapid cooling device which comprises a box body, an air outlet pipe is fixedly installed at the front end of the box body, a first motor is fixedly installed at the end, away from the air outlet pipe, of the box body, and the output end of the first motor extends into the box body to be fixedly provided with fan blades. A box door is arranged on the side edge of the box body, a refrigerating mechanism is arranged on the box door, the adjusting mechanism comprises a second motor, a rotating shaft and a lead screw, the second motor is fixedly installed on the top of the box body, the rotating shaft is fixedly installed at the output end of the second motor, and a first bevel gear is fixedly installed at the end, away from the second motor, of the rotating shaft. The first motor is started to drive the fan blades to rotate to blow air, the air is conveyed into the steam turbine through the air outlet pipe to be cooled, meanwhile, the refrigerator is started, the box body is filled with cold air through the refrigerating pipe, and therefore the cooling speed of the steam turbine can be increased conveniently during cooling.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbines, in particular to a steam turbine quick cooling device. Background Art

[0002] A steam turbine, also known as a steam turbine engine, is a rotary steam power device. Its principle is that high-temperature and high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then sprays onto the blades, causing the rotor with the blade rows to rotate and perform work externally. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship power devices. Steam turbines are machines that run at high speed under high temperature and high pressure, and their rotating parts are subject to huge centrifugal forces.

[0003] The prior art has the following deficiencies:

[0004] Existing steam turbines generate a large amount of heat during operation, and usually require a long cooling time after the steam turbine is shut down, which not only affects the maintenance efficiency, but may also easily cause damage to internal components due to long-term high temperature. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a steam turbine rapid cooling device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a steam turbine fast cooling device, comprising a box, an air outlet pipe is fixedly installed at the front end of the box, a first motor is fixedly installed at one end of the box away from the air outlet pipe, an output end of the first motor extends to the inside of the box and a fan blade is fixedly installed, an adjustment mechanism is provided on the air outlet pipe, a box door is provided on the side of the box, and a refrigeration mechanism is provided on the box door;

[0007] The adjusting mechanism includes a second motor, a rotating shaft and a screw. The second motor is fixedly mounted on the top of the box, the rotating shaft is fixedly mounted on the output end of the second motor, a first bevel gear is fixedly mounted on one end of the rotating shaft away from the second motor, and the screw is rotatably mounted inside the air outlet duct.

[0008] As a preferred technical solution of the utility model, the adjustment mechanism also includes a first adjustment plate, a second adjustment plate and a fixed block. The first adjustment plate and the second adjustment plate are symmetrically arranged and slidably installed inside the air outlet duct. The fixed block is provided with two groups, and is symmetrically arranged and fixedly installed on one side of the first adjustment plate and the second adjustment plate close to the screw rod, and is threadedly connected to the screw rod.

[0009] As a preferred technical solution of the utility model, the screw rod is symmetrically arranged by two groups of bidirectional threaded rods, the top of the screw rod extends to the top of the air outlet pipe to fix the second bevel gear, and the second bevel gear is meshed and connected with the first bevel gear.

[0010] As a preferred technical solution of the utility model, a plurality of groups of air inlet holes are arranged around the box body corresponding to the first motor, and dustproof nets are fixedly installed inside the air inlet holes.

[0011] As a preferred technical solution of the utility model, a slide plate is fixedly installed on the bottom of the box door, a slide groove is opened on the inner wall of the box body corresponding to the position of the slide plate, and two sets of symmetrically arranged handles are fixedly installed on the outer side of the box door.

[0012] As a preferred technical solution of the utility model, the refrigeration mechanism includes a refrigerator and a refrigeration pipe. The refrigerator is fixedly installed on the outside of the box door, and the refrigeration pipe is fixedly installed on the inside of the box door and fixedly connected to the output end of the refrigeration mechanism. A slot is provided on the inner wall of the box body corresponding to the position of the refrigeration pipe.

[0013] As a preferred technical solution of the utility model, the air outlet duct is provided with through holes at positions corresponding to the first adjustment plate and the second adjustment plate, a connecting block is fixedly installed on the outside of the through holes, and the sides of the first adjustment plate and the second adjustment plate are respectively fitted with the connecting blocks.

[0014] Compared with the prior art, the utility model provides a steam turbine rapid cooling device, which has the following beneficial effects:

[0015] 1. This steam turbine fast cooling device, when cooling the steam turbine, starts the first motor to drive the fan blades to rotate to blow air, and transports the air to the inside of the steam turbine through the air outlet pipe for cooling. At the same time, by starting the refrigerator, the inside of the box is filled with cold air through the refrigeration pipe, so that the cooling speed of the steam turbine can be increased during cooling.

[0016] 2. This kind of steam turbine quick cooling device drives the rotating shaft to rotate by starting the second motor, and drives the screw to rotate through the cooperation of the first bevel gear and the second bevel gear, so that the first adjustment plate and the second adjustment plate move in opposite directions, thereby adjusting the distance between the first adjustment plate and the second adjustment plate, so that the air volume of the air outlet pipe can be adjusted, which is convenient for adjusting according to the temperature of the steam turbine when cooling the steam turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the front cross-sectional structure of the utility model;

[0020] Figure 4 It is a schematic diagram of the side cross-sectional structure of the utility model.

[0021] In the figure: 1. box body; 2. air outlet duct; 3. first motor; 301. fan blade; 4. adjustment mechanism; 401. second motor; 402. rotating shaft; 403. screw rod; 404. first adjustment plate; 405. second adjustment plate; 406. fixing block; 5. air inlet hole; 6. first bevel gear; 7. second bevel gear; 8. box door; 801. slide plate; 802. slide groove; 9. refrigeration mechanism; 901. refrigerator; 902. refrigeration pipe; 10. connecting block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 In this embodiment: a steam turbine fast cooling device comprises a box body 1, an air outlet pipe 2 is fixedly installed at the front end of the box body 1, a first motor 3 is fixedly installed at one end of the box body 1 away from the air outlet pipe 2, an output end of the first motor 3 extends to the interior of the box body 1 to fix a fan blade 301, an adjusting mechanism 4 is provided on the air outlet pipe 2, a box door 8 is provided on the side of the box body 1, and a refrigeration mechanism 9 is provided on the box door 8.

[0024] The adjustment mechanism 4 includes a second motor 401, a rotating shaft 402 and a screw 403. The second motor 401 is fixedly installed on the top of the box 1, the rotating shaft 402 is fixedly installed on the output end of the second motor 401, and the first bevel gear 6 is fixedly installed. The screw 403 is rotatably installed inside the air outlet pipe 2.

[0025] In this embodiment, the adjustment mechanism 4 further includes a first adjustment plate 404, a second adjustment plate 405 and a fixed block 406. The first adjustment plate 404 and the second adjustment plate 405 are symmetrically arranged and slidably installed inside the air outlet 2. The fixed block 406 is provided with two groups, and is symmetrically arranged and fixedly installed on one side of the first adjustment plate 404 and the second adjustment plate 405 close to the screw rod 403, and is threadedly connected to the screw rod 403.

[0026] In this embodiment, the screw rod 403 is symmetrically arranged by two groups of bidirectional threaded rods, and the top of the screw rod 403 extends to the top of the air outlet pipe 2 to fix the second bevel gear 7, and the second bevel gear 7 is meshed with the first bevel gear 6. By starting the second motor 401, the rotating shaft 402 is driven to rotate, and the first bevel gear 6 and the second bevel gear 7 cooperate to drive the screw rod 403 to rotate, so that the first adjustment plate 404 and the second adjustment plate 405 move in opposite directions, thereby adjusting the distance between the first adjustment plate 404 and the second adjustment plate 405, so that the air volume of the air outlet pipe 2 can be adjusted, which is convenient for adjusting according to the temperature of the steam turbine when cooling the steam turbine.

[0027] In this embodiment, a plurality of air inlet holes 5 are provided around the box body 1 corresponding to the first motor 3, and a dustproof net is fixedly installed inside the air inlet hole 5. By setting the dustproof net, dust can be prevented from entering the interior of the turbine through the air outlet pipe 2 when blowing air.

[0028] In this embodiment, a slide plate 801 is fixedly installed at the bottom of the box door 8, and a slide groove 802 is opened on the inner wall of the box body 1 corresponding to the position of the slide plate 801. Two sets of symmetrically arranged handles are fixedly installed on the outer side of the box door 8. The slide plate 801 and the handles are provided to facilitate the disassembly and assembly of the box door 8, thereby facilitating the maintenance and replacement of the parts inside the box body 1.

[0029] In this embodiment, the refrigeration mechanism 9 includes a refrigerator 901 and a refrigeration pipe 902. The refrigerator 901 is fixedly installed on the outside of the box door 8, and the refrigeration pipe 902 is fixedly installed on the inside of the box door 8 and fixedly connected to the output end of the refrigeration mechanism 9. A connecting block 10 is provided on the inner wall of the box body 1 corresponding to the position of the refrigeration pipe 902. When blowing, the refrigerator 901 is started, and the interior of the box body 1 is filled with cold air through the refrigeration pipe 902, so that the cooling speed of the turbine can be increased during cooling.

[0030] In this embodiment, a through hole is opened in the air outlet duct 2 at the position corresponding to the first adjustment plate 404 and the second adjustment plate 405, and a connecting block 10 is fixedly installed on the outside of the through hole. The sides of the first adjustment plate 404 and the second adjustment plate 405 are respectively fitted with the connecting block 10. By setting the connecting block 10, the cold air can be prevented from leaking when blowing.

[0031] The working principle and use process of the utility model are as follows: when cooling the steam turbine, the air outlet pipe 2 is connected with the interior of the steam turbine, the fan blades 301 are driven to rotate by starting the first motor 3, and the refrigerator 901 is started at the same time, and the interior of the box body 1 is filled with cold air through the refrigeration pipe 902, and the cold air inside the box body 1 is transported to the interior of the steam turbine through the air outlet pipe 2 by the rotation of the fan blades 301, thereby cooling the steam turbine.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A steam turbine rapid cooling device, comprising a box (1), an air outlet pipe (2) fixedly mounted at the front end of the box (1), and a first motor (3) fixedly mounted at one end of the box (1) away from the air outlet pipe (2), characterized in that: The output end of the first motor (3) extends to the interior of the box (1) to fix a fan blade (301), the air outlet pipe (2) is provided with an adjustment mechanism (4), the side of the box (1) is provided with a box door (8), and the box door (8) is provided with a refrigeration mechanism (9); The adjustment mechanism (4) comprises a second motor (401), a rotating shaft (402) and a screw (403); the second motor (401) is fixedly mounted on the top of the housing (1); the rotating shaft (402) is fixedly mounted on the output end of the second motor (401); a first bevel gear (6) is fixedly mounted on one end of the rotating shaft (402) away from the second motor (401); and the screw (403) is rotatably mounted inside the air outlet pipe (2).

2. A steam turbine rapid cooling device according to claim 1, characterized in that: The adjustment mechanism (4) further comprises a first adjustment plate (404), a second adjustment plate (405) and a fixing block (406); the first adjustment plate (404) and the second adjustment plate (405) are symmetrically arranged and slidably mounted inside the air outlet pipe (2); the fixing block (406) is provided in two groups and is symmetrically arranged and fixedly mounted on one side of the first adjustment plate (404) and the second adjustment plate (405) close to the screw rod (403), and is threadedly connected to the screw rod (403).

3. A steam turbine rapid cooling device according to claim 1, characterized in that: The screw rod (403) is composed of two groups of bidirectional threaded rods arranged in symmetrical directions, and the top of the screw rod (403) extends to the top of the air outlet pipe (2) to fix the second bevel gear (7), and the second bevel gear (7) is meshed and connected with the first bevel gear (6).

4. A steam turbine rapid cooling device according to claim 1, characterized in that: The box body (1) is provided with a plurality of groups of air inlet holes (5) around the first motor (3), and a dustproof net is fixedly installed inside the air inlet holes (5).

5. The steam turbine rapid cooling device according to claim 1, characterized in that: A slide plate (801) is fixedly mounted on the bottom of the box door (8), a slide groove (802) is provided on the inner wall of the box body (1) at a position corresponding to the slide plate (801), and two groups of symmetrically arranged handles are fixedly mounted on the outer side of the box door (8).

6. A steam turbine rapid cooling device according to claim 1, characterized in that: The refrigeration mechanism (9) comprises a refrigeration machine (901) and a refrigeration pipe (902); the refrigeration machine (901) is fixedly mounted on the outside of the cabinet door (8); the refrigeration pipe (902) is fixedly mounted on the inside of the cabinet door (8) and is fixedly connected to the output end of the refrigeration mechanism (9); and a slot is provided on the inner wall of the cabinet (1) at a position corresponding to the refrigeration pipe (902).

7. The steam turbine rapid cooling device according to claim 1, characterized in that: The air outlet pipe (2) is provided with through holes at positions corresponding to the first adjustment plate (404) and the second adjustment plate (405); a connecting block (10) is fixedly installed on the outer side of the through holes; and the side edges of the first adjustment plate (404) and the second adjustment plate (405) are respectively fitted with the connecting block (10).

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