Thermal insulation device of steam turbine

Abstract

The steam turbine heat insulation device comprises an outer protection cylinder, a first ring groove, a second ring groove and a third ring groove are formed in the outer protection cylinder, the second ring groove is located between the first ring groove and the third ring groove, and a steam turbine body is rotationally connected between the two sides of an inner cavity of the outer protection cylinder by forming an opening; the utility model relates to the technical field of turbines. According to the heat insulation device of the steam turbine, a first ring groove, a second ring groove and a third ring groove are formed in the outer protection barrel, a flow guide pipe and a water drainage pipe are used for connection, and heat insulation cotton blocks are matched for use, so that water can flow on the inner sides of the first ring groove and the second ring groove through the arrangement of the structures, and two heat insulation layers are formed; and the heat insulation cotton block is used for middle isolation, so that water in the first annular groove can isolate redundant dissipated heat in advance and take away the heat, the temperature of equipment cannot be actively and forcibly reduced, and meanwhile, the third annular groove can effectively prevent heat dissipation.

Description

Technical Field

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

[0002] A steam turbine is a rotary steam-powered device and is the main equipment in modern thermal power plants. It is also used in the metallurgical industry, chemical industry, and ship power plants. During the operation of existing steam turbines, the temperature of the turbine will rise sharply. If the staff touches it, there will be a safety hazard of burns. In addition, the steam turbine is in a high temperature state for a long time, which will greatly reduce the service life of the turbine. Patent documents have been issued to improve this.

[0003] For example, Chinese patent CN216008619U, a steam turbine heat insulation device, belongs to the field of steam turbines, and solves the problem that existing steam turbines do not have heat insulation devices and have safety hazards. The heat insulation device includes a heat insulation box surrounding the steam turbine body, the bottom of the heat insulation box is provided with a plurality of support legs, the inner wall of the heat insulation box is provided with heat insulation cotton, the inner wall of the heat insulation box is also provided with a temperature sensor, the top of the heat insulation box is provided with an exhaust fan, the exhaust fan is electrically connected to the temperature sensor, the bottom of the heat insulation box is provided with a water curtain, the heat insulation box above the middle of the water curtain is provided with a U-shaped plate, both sides of the U-shaped plate are rotatably installed with baffles through a rotating shaft, the two baffles cover the top of the water curtain, and the two rotating shafts are located in the U-shaped plate, and the heat insulation box below the water curtain is also provided with a filter cover. The steam turbine heat insulation device of the utility model can eliminate the safety hazard of scalding workers and can cool down the steam turbine in time.

[0004] The equipment in the above documents actively supplies and exhausts air through structures such as fans and water curtains to reduce the temperature of the steam turbine, but in actual processes it has obvious defects, such as:

[0005] The operation of the steam turbine itself needs to maintain high temperature and high pressure state, so it needs to be insulated to prevent energy loss and equipment damage. This device achieves the purpose of heat insulation by directly reducing the operating temperature of the steam turbine as a whole, which will cause the steam turbine to be unstable in operation, and it is very easy to cause equipment damage if it is in this state for a long time.

[0006] Therefore, a steam turbine heat insulation device which can both heat-insulate the steam turbine and reduce damage is now designed to solve such defects. Utility Model Content

[0007] In view of the deficiencies of the prior art, the utility model provides a steam turbine heat insulation device, which solves the problem that the prior steam turbine heat insulation device may cause damage to the steam turbine body.

[0008] To achieve the above purpose, the utility model is implemented through the following technical scheme: a steam turbine heat insulation device, including an outer protective tube, the interior of the outer protective tube is respectively provided with a first ring groove, a second ring groove and a third ring groove, and the second ring groove is located between the first ring groove and the third ring groove, and the steam turbine body is rotatably connected between the two sides of the inner cavity of the outer protective tube through an opening, and an insulation cotton block is arranged on the inner side of the second ring groove, and the insulation cotton block is arranged in a ring shape, and a plurality of groups of five are arranged in a group.

[0009] Preferably, the top of the outer protective tube is fixedly connected to a drain pipe by opening, and several drain pipes are arranged laterally, the top of the drain pipe passes through the first annular groove, the second annular groove and the third annular groove in sequence and extends to the inner side of the third annular groove, a water inlet is provided on the surface of the drain pipe and located on the inner side of the first annular groove, and several water inlets are arranged, the bottom of the inner cavity of the first annular groove is fixedly connected to a guide pipe by opening, and several guide pipes are arranged, and the bottom end of the guide pipe passes through the second annular groove and the third annular groove in sequence and extends to the inner side of the third annular groove.

[0010] Preferably, the top of the outer protective tube is fixedly connected to a water inlet pipe through an opening, and there are several water inlet pipes, a water diversion frame is connected between the top ends of the several water inlet pipes, and the right end of the water diversion frame is fixedly connected to a water injection pipe through an opening.

[0011] Preferably, the front and rear sides of the top of the outer protective tube are fixedly connected to a stabilizing seat, both sides of the stabilizing seat are rotatably connected to a rotating rod through a bearing, and an arc frame used in conjunction with the outer protective tube is fixedly connected between the two rotating rods on the same side.

[0012] Preferably, both sides of the bottom of the outer protective tube are fixedly connected with support frames.

[0013] Beneficial Effects

[0014] The utility model provides a steam turbine heat insulation device. Compared with the existing technology, it has the following beneficial effects:

[0015] (1) The steam turbine heat insulation device is provided with a first ring groove, a second ring groove and a third ring groove respectively inside the outer protective tube, and connected by a guide pipe and a drain pipe, and used in conjunction with a heat insulation cotton block. The arrangement of these structures can allow water to flow inside the first ring groove and the second ring groove to form two heat insulation layers, and the heat insulation cotton block is used for intermediate isolation, so that the water inside the first ring groove can pre-isolate and take away the excess heat, and will not actively and forcibly extract the temperature of the equipment. At the same time, the third ring groove can effectively block the heat dissipation, which can not only achieve the purpose of heat insulation, but also protect the steam turbine.

[0016] (2) The steam turbine heat insulation device has arc frames installed on the surface and rear of the outer protective tube. This structural setting can further protect the outer protective tube, preventing workers from accidentally touching the outer protective tube during work and causing additional dangers, thereby effectively improving the overall safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 It is a schematic diagram of the structure of the stabilizing seat, the rotating rod and the arc frame of the utility model;

[0019] Figure 3 It is a cross-sectional view of the outer protective tube structure of the utility model;

[0020] Figure 4 For this utility model Figure 3 A partial enlarged view of point A in the middle.

[0021] In the figure: 1. outer protective tube; 2. support frame; 3. turbine body; 4. first ring groove; 5. second ring groove; 6. third ring groove; 7. drain pipe; 8. water inlet; 9. heat insulation cotton block; 10. guide pipe; 11. water inlet pipe; 12. water distribution frame; 13. water injection pipe; 14. stabilizing seat; 15. rotating rod; 16. arc frame. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] See also Figure 1-4 The utility model provides a technical solution: a steam turbine heat insulation device, including an outer protective tube 1, the interior of the outer protective tube 1 is respectively provided with a first ring groove 4, a second ring groove 5 and a third ring groove 6, and the second ring groove 5 is located between the first ring groove 4 and the third ring groove 6, and a steam turbine body 3 is rotatably connected between the two sides of the inner cavity of the outer protective tube 1 through an opening, and a heat insulation cotton block 9 is arranged on the inner side of the second ring groove 5, and the heat insulation cotton block 9 is annular and a plurality of groups of five are arranged in a group, and both sides of the bottom of the outer protective tube 1 are fixedly connected to a support frame 2.

[0024] As an optional embodiment, the top of the outer protective tube 1 is fixedly connected to a drain pipe 7 through an opening, and several drain pipes 7 are arranged horizontally, the top of the drain pipe 7 passes through the first annular groove 4, the second annular groove 5 and the third annular groove 6 in sequence and extends to the inner side of the third annular groove 6, a water inlet 8 is opened on the surface of the drain pipe 7 and located on the inner side of the first annular groove 4, and several water inlets 8 are arranged, the bottom of the inner cavity of the first annular groove 4 is fixedly connected to a guide pipe 10 through an opening, and several guide pipes 10 are arranged, the bottom end of the guide pipe 10 passes through the second annular groove 5 and the third annular groove 6 in sequence and extends to the inner side of the third annular groove 6, the top of the outer protective tube 1 is fixedly connected to a water inlet pipe 11 through an opening, and several water inlet pipes 11 are arranged, a water diversion frame 12 is connected between the top ends of the several water inlet pipes 11, and the right end of the water diversion frame 12 is fixedly connected to a water injection pipe 13 through an opening.

[0025] When in use, first use the water injection pipe 13 to connect to the water source. After the turbine body 3 is started, water is injected through the water injection pipe 13. After the water flows into the water distribution frame 12, it enters the inner side of the first annular groove 4 through the water inlet pipe 11, and then the first annular groove 4 is filled. While the first annular groove 4 is filled, part of the water flows through the guide pipe 10 into the inner side of the third annular groove 6. At this time, the heat insulation cotton block 9 serves as an isolation layer to layer the first annular groove 4 and the third annular groove 6, and the water inside the third annular groove 6 serves as the first insulating layer to take away most of the heat. The first annular groove 4 serves as the third insulating layer to effectively prevent temperature dissipation. The water after absorbing heat follows the flow and is finally discharged through the drain pipe 7 and the water inlet 8.

[0026] Among them, the front and rear sides of the top of the outer protective tube 1 are fixedly connected with a stabilizing seat 14, and both sides of the stabilizing seat 14 are rotatably connected with a rotating rod 15 through a bearing member. An arc frame 16 used in conjunction with the outer protective tube 1 is fixedly connected between the two rotating rods 15 on the same side.

[0027] When used in combination with the arc frame 16, the device can be turned over to achieve effective heat insulation during daily use, thereby preventing accidental contact and danger.

[0028] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A steam turbine heat insulation device, comprising an outer protective tube (1), characterized in that: The outer protective tube (1) is provided with a first annular groove (4), a second annular groove (5) and a third annular groove (6) respectively, and the second annular groove (5) is located between the first annular groove (4) and the third annular groove (6). The steam turbine body (3) is rotatably connected between the two sides of the inner cavity of the outer protective tube (1) through an opening. The inner side of the second annular groove (5) is provided with a heat insulating cotton block (9), and the heat insulating cotton blocks (9) are arranged in a ring shape, with five of each block being provided in a group.

2. A steam turbine heat insulation device according to claim 1, characterized in that: The top of the outer protective tube (1) is fixedly connected to a drain pipe (7) by opening, and a plurality of drain pipes (7) are arranged transversely. The top of the drain pipe (7) sequentially penetrates the first annular groove (4), the second annular groove (5) and the third annular groove (6) and extends to the inner side of the third annular groove (6). A water inlet (8) is provided on the surface of the drain pipe (7) and located on the inner side of the first annular groove (4), and a plurality of water inlets (8) are arranged. The bottom of the inner cavity of the first annular groove (4) is fixedly connected to a guide pipe (10) by opening, and a plurality of guide pipes (10) are arranged. The bottom end of the guide pipe (10) sequentially penetrates the second annular groove (5) and the third annular groove (6) and extends to the inner side of the third annular groove (6).

3. A steam turbine heat insulation device according to claim 1, characterized in that: The top of the outer protective tube (1) is fixedly connected to a water inlet pipe (11) through an opening, and a plurality of water inlet pipes (11) are provided, a water distribution frame (12) is connected between the top ends of the plurality of water inlet pipes (11), and a water injection pipe (13) is fixedly connected to the right end of the water distribution frame (12) through an opening.

4. A steam turbine heat insulation device according to claim 1, characterized in that: The front and rear sides of the top of the outer protective tube (1) are fixedly connected to a stabilizing seat (14), both sides of the stabilizing seat (14) are rotatably connected to a rotating rod (15) via a bearing member, and an arc-shaped frame (16) used in conjunction with the outer protective tube (1) is fixedly connected between the two rotating rods (15) on the same side.

5. A steam turbine heat insulation device according to claim 1, characterized in that: Support frames (2) are fixedly connected to both sides of the bottom of the outer protective tube (1).

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