Assembled steam turbine housing with high stability

Abstract

The utility model relates to the technical field of steam turbine housings, and discloses a high-stability split mounting type steam turbine housing which comprises a housing body, a temperature sensor is mounted on the inner face of the housing body, a mounting box is fixed to the inner face of the housing body, a motor is mounted on the mounting box, an air exhaust assembly is arranged on the mounting box, and the motor is connected with the air exhaust assembly. And an air suction assembly is arranged on the inner top surface of the housing. The housing provided by the utility model adopts a totally-closed structure, so that moisture can be effectively prevented from entering the housing, the steam turbine is prevented from being affected with damp, meanwhile, the temperature sensor, the motor and the reciprocating screw rod are combined, automatic control and adjustment are realized when the internal temperature rises, the temperature in the housing is ensured to be within a controllable range, and the service life of the steam turbine is prolonged. According to the structural design of the moving plate and the annular air bag, when the motor operates, through cooperation of the air exhaust assembly and the air suction assembly, internal air is continuously exhausted and discharged to the outside, heat is effectively dissipated, internal heat retention is avoided, and therefore overheating of the steam turbine is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine covers, in particular to an assembled steam turbine cover with high stability. Background Art

[0002] The assembled steam turbine casing refers to a steam turbine casing structure assembled from multiple components. In order to improve its stability, it is necessary to consider multiple aspects such as material selection, structural design and assembly method.

[0003] In the prior art, a heat dissipation port is generally provided on the steam turbine cover. However, during the use of the steam turbine cover, moisture from the external environment can easily enter the interior of the steam turbine cover through the heat dissipation port, causing the steam turbine to become damp. If a closed steam turbine cover is used, although the problem of moisture in the steam turbine can be solved, it will hinder the circulation and convection of airflow, affecting the heat dissipation of the steam turbine.

[0004] Therefore, it is necessary to design an assembled steam turbine casing with high stability to solve the above problems. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes an assembled steam turbine casing with high stability.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A highly stable assembled steam turbine casing comprises a casing, a temperature sensor is mounted on the inner surface of the casing, a mounting box is fixed on the inner surface of the casing, a motor is mounted on the mounting box, an exhaust assembly is arranged on the mounting box, and an air intake assembly is arranged on the inner top surface of the casing.

[0008] As a preferred technical solution of the utility model, the vacuum assembly includes a reciprocating screw, a movable plate, an annular airbag, two air pipes and two one-way valves, one end of the reciprocating screw is connected to the output shaft of the motor, the other end of the reciprocating screw is rotatably assembled on the inner surface of the mounting box, the movable plate is threadedly sleeved on the reciprocating screw, one end of the annular airbag is connected to the inner surface of the mounting box, the other end of the annular airbag is connected to the movable plate, one end of the two air pipes are connected to the annular airbag, the two one-way valves are respectively installed on the two air pipes, and the other end of one of the air pipes extends to the outside of the cover.

[0009] As a preferred technical solution of the utility model, the exhaust assembly includes a tube bracket, an exhaust pipe and a plurality of air holes, the tube bracket is fixed to the inner top surface of the cover shell, the exhaust pipe is fixed on the tube bracket, a plurality of air holes are opened on the tube bracket, and one end of the exhaust pipe is connected to the other end of another air pipe.

[0010] As a preferred technical solution of the present invention, the inner surface of the installation box and the side surface of the movable plate are in contact with each other.

[0011] As a preferred technical solution of the present utility model, the flow limiting directions of the two one-way valves are opposite.

[0012] As a preferred technical solution of the utility model, the exhaust pipe is arranged along the length direction of the cover shell, and a plurality of the air holes are evenly distributed on the exhaust pipe.

[0013] The utility model has the following beneficial effects:

[0014] The cover adopts a fully enclosed structure, which can effectively prevent moisture from entering the interior, thereby preventing the turbine from getting damp. At the same time, the combination of temperature sensor, motor and reciprocating screw is used to achieve automatic control and adjustment when the internal temperature rises, ensuring that the temperature inside the cover is within a controllable range. The structural design of the moving plate and the annular airbag enables the internal air to be continuously extracted and discharged to the outside through the cooperation of the exhaust assembly and the suction assembly when the motor is running, effectively dissipating heat and avoiding internal heat retention, thereby preventing the turbine from overheating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of an assembled steam turbine casing with high stability proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of an assembled steam turbine casing with high stability proposed by the utility model;

[0017] Figure 3 for Figure 2 A magnified view of the local structure.

[0018] In the figure: 1 cover, 2 temperature sensor, 3 installation box, 4 motor, 5 reciprocating screw, 6 moving plate, 7 annular airbag, 8 air pipe, 9 one-way valve, 10 pipe bracket, 11 exhaust pipe, 12 air hole. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3A highly stable assembled steam turbine casing comprises a casing 1, a temperature sensor 2 is mounted on the inner surface of the casing 1, a mounting box 3 is fixed on the inner surface of the casing 1, a motor 4 is mounted on the mounting box 3, an exhaust assembly is arranged on the mounting box 3, and an air intake assembly is arranged on the inner top surface of the casing 1.

[0021] Reference Figure 1-3 The exhaust assembly includes a reciprocating screw 5, a movable plate 6, an annular airbag 7, two air pipes 8 and two one-way valves 9. One end of the reciprocating screw 5 is connected to the output shaft of the motor 4, and the other end of the reciprocating screw 5 is rotatably assembled on the inner surface of the mounting box 3. The movable plate 6 is threadedly sleeved on the reciprocating screw 5. One end of the annular airbag 7 is connected to the inner surface of the mounting box 3, and the other end of the annular airbag 7 is connected to the movable plate 6. One ends of the two air pipes 8 are connected to the annular airbag 7. The two one-way valves 9 are respectively installed on the two air pipes 8, and the other end of one of the air pipes 8 extends to the outside of the cover 1. With the operation of the motor 4, the annular airbag 7 can continuously extract the air in the cover 1 through the exhaust pipe 11 and a plurality of air holes 12, and discharge the air in the cover 1 to the outside of the cover 1, so as to avoid heat retention in the cover 1 and play a role in heat dissipation for the steam turbine.

[0022] Reference Figure 1-3 The exhaust assembly includes a pipe bracket 10, an exhaust pipe 11 and a plurality of air holes 12. The pipe bracket 10 is fixed to the inner top surface of the cover shell 1, the exhaust pipe 11 is fixed to the pipe bracket 10, and a plurality of air holes 12 are opened on the pipe bracket 10. One end of the exhaust pipe 11 is connected to the other end of another air pipe 8, and a plurality of air holes 12 are evenly distributed on the exhaust pipe 11, which enables the annular airbag 7 to evenly and comprehensively extract the air in the cover shell 1, thereby ensuring the heat dissipation effect of the device on the steam turbine.

[0023] Reference Figure 1-3 The inner surface of the mounting box 3 and the side surface of the movable plate 6 fit each other. This design can prevent the movable plate 6 from rotating with the reciprocating screw rod 5, so that the movable plate 6 can only move in a straight line.

[0024] Reference Figure 1-3 The flow limiting directions of the two one-way valves 9 are opposite. Specifically, one of the one-way valves 9 limits the airflow to only enter the annular airbag 7, and the other one-way valve 9 limits the airflow to only flow out of the annular airbag 7.

[0025] Reference Figure 1-3 The exhaust pipe 11 is arranged along the length direction of the cover shell 1 , and a plurality of air holes 12 are evenly distributed on the exhaust pipe 11 .

[0026] The specific working principle of the utility model is as follows:

[0027] The cover shell 1 proposed in the present invention adopts an assembled structure. The specific assembly method of the cover shell 1 is not an innovative part of the present technical solution, and is not shown in the figure, nor will it be described in detail here. The cover shell 1 is a fully enclosed structure, which can prevent moisture from entering the interior of the cover shell 1, thereby preventing the steam turbine from getting damp. During the operation of the steam turbine, the interior of the cover shell 1 will gradually rise. When the internal temperature of the cover shell 1 reaches the preset temperature value of the temperature sensor 2, the temperature sensor 2 will send a control signal to the motor 4 to power on the motor 4. When the motor 4 is running, it can drive the reciprocating screw 5 to rotate. Since the cross-sections of the mounting box 3 and the movable plate 6 are both rectangular structures, and the inner surface of the mounting box 3 and the side surface of the movable plate 6 are in contact with each other, the reciprocating screw 5 can drive the movable plate 6 to move up and down inside the mounting box 3 when rotating. When the movable plate 6 moves upward, the movable plate 6 can stretch the annular airbag 7. When the movable plate 6 moves upward, the movable plate 6 can stretch the annular airbag 7. When the plate 6 moves downward, the movable plate 6 can squeeze the annular airbag 7. Since the flow limiting directions of the two one-way valves 9 are opposite, specifically, one of the one-way valves 9 limits the airflow to only enter the annular airbag 7, and the other one-way valve 9 limits the airflow to only flow out of the annular airbag 7. Therefore, when the annular airbag 7 is stretched, the annular airbag 7 can perform a pumping action, and when the annular airbag 7 is compressed, the annular airbag 7 can perform an exhaust action. Based on the above process, along with the operation of the motor 4, the annular airbag 7 can continuously extract the air in the cover 1 through the exhaust pipe 11 and a plurality of air holes 12, and discharge the air in the cover 1 to the outside of the cover 1, so as to avoid heat retention in the cover 1 and play a role in heat dissipation for the steam turbine. In summary, the closed cover 1 can prevent moisture from entering the interior of the cover 1, and the design of the exhaust component and the air intake component can ensure the normal heat dissipation of the cover 1, thereby preventing the steam turbine from getting damp and overheating.

[0028] It should be noted that the plurality of air holes 12 are evenly distributed on the exhaust pipe 11, so that the annular airbag 7 can evenly and comprehensively extract the air in the housing 1, thereby ensuring the heat dissipation effect of the device on the steam turbine.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An assembled steam turbine casing with high stability, comprising a casing (1), characterized in that: A temperature sensor (2) is installed on the inner surface of the cover shell (1), a mounting box (3) is fixed on the inner surface of the cover shell (1), a motor (4) is installed on the mounting box (3), an exhaust assembly is arranged on the mounting box (3), and an air suction assembly is arranged on the inner top surface of the cover shell (1); The vacuum assembly comprises a reciprocating screw (5), a movable plate (6), an annular airbag (7), two air pipes (8) and two one-way valves (9); one end of the reciprocating screw (5) is connected to the output shaft of the motor (4); the other end of the reciprocating screw (5) is rotatably mounted on the inner surface of the mounting box (3); the movable plate (6) is threadedly sleeved on the reciprocating screw (5); one end of the annular airbag (7) is connected to the inner surface of the mounting box (3); the other end of the annular airbag (7) is connected to the movable plate (6); one end of the two air pipes (8) are both connected to the annular airbag (7); the two one-way valves (9) are respectively mounted on the two air pipes (8); the other end of one of the air pipes (8) extends to the outside of the housing (1).

2. The assembled steam turbine casing with high stability according to claim 1, characterized in that: The exhaust assembly comprises a pipe support (10), an exhaust pipe (11) and a plurality of air holes (12); the pipe support (10) is fixed to the inner top surface of the housing (1); the exhaust pipe (11) is fixed to the pipe support (10); the plurality of air holes (12) are all provided on the pipe support (10); one end of the exhaust pipe (11) is connected to the other end of another air pipe (8).

3. The assembled steam turbine casing with high stability according to claim 1, characterized in that: The inner surface of the installation box (3) and the side surface of the movable plate (6) are in contact with each other.

4. The assembled steam turbine casing with high stability according to claim 1, characterized in that: The flow limiting directions of the two one-way valves (9) are opposite.

5. The assembled steam turbine casing with high stability according to claim 2, characterized in that: The air extraction pipe (11) is arranged along the length direction of the housing (1), and a plurality of air holes (12) are evenly distributed on the air extraction pipe (11).

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