Waste heat power generation turbine with protection mechanism

Abstract

This utility model relates to the field of waste heat power generation steam turbine technology, specifically a waste heat power generation steam turbine with a protection mechanism. It includes a high-pressure cylinder, a low-pressure cylinder, a dehumidification component, and a preheating component. An air inlet pipe is provided on the side of the high-pressure cylinder. A main steam pipe connects the upper ends of the high-pressure and low-pressure cylinders. The dehumidification component is connected to the outer end of the air inlet pipe. The preheating component is installed outside the main steam pipe. The dehumidification component includes a separation tank with an air inlet and an external interface at both ends. A guide tube is provided inside the separation tank, and centrifugal blades are provided on the outer wall of the guide tube. A connection port is provided on the other side of the guide tube and is connected to the air inlet. The inner side of the air inlet is connected to the air inlet pipe. This design enables effective separation of moisture from the steam, ensuring stable steam humidity and preventing condensate from impacting pipe bends or turbine blades in the high-speed steam flow, thus improving the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of waste heat power generation steam turbine technology, and in particular to a waste heat power generation steam turbine with a protection mechanism. Background Technology

[0002] Waste heat power generation turbine is a device that uses waste heat generated during industrial production to generate electricity. Its working principle is to recover this waste heat, convert it into mechanical energy, and then convert it into electrical energy through a generator. Waste heat power generation turbines are widely used in industries such as steel, metallurgy, non-ferrous metal smelting, building materials, cement, and petrochemicals.

[0003] However, existing waste heat power generation turbines generally suffer from insufficient steam-water separation capacity, which is a technical bottleneck. Due to the complex sources of industrial waste heat and the inconsistent quality of steam, steam containing a large amount of moisture enters the turbine. During high-speed flow, water droplets will impact the impeller surface at extremely high speeds, causing erosion. This erosion not only damages the impeller's surface structure and reduces its mechanical strength, but also disrupts the impeller's dynamic balance, leading to increased turbine vibration and even turbine shutdown. Therefore, we need to upgrade and modify existing technologies to overcome these problems and shortcomings. Utility Model Content

[0004] The purpose of this invention is to provide a waste heat power generation turbine with a protection mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] Design a waste heat power generation steam turbine with a protection mechanism, including a high-pressure cylinder, a low-pressure cylinder, a dehumidification component and a preheating component. The high-pressure cylinder is provided with an air inlet pipe on its side. The high-pressure cylinder and the low-pressure cylinder are connected to a main steam pipe at their upper ends. The dehumidification component is connected to the outer end of the air inlet pipe. The preheating component is installed outside the main steam pipe.

[0007] The dehumidification component includes a separator tank, which has an air inlet and an external interface at both ends. The separator tank has a guide tube inside and centrifugal blades on its outer wall. The guide tube has a connection port on the other side and the connection port is connected to the air inlet.

[0008] Preferably, the inner side of the air inlet is connected to the air inlet pipe, the outer interface is connected to an external steam boiler, the upper and lower ends of the guide tube are connected through, and the bottom of the separator is provided with a drain outlet.

[0009] Preferably, a water guide plate is provided at the lower end of the interior of the separation tank, a fixing frame is provided on the outside of the water guide plate and the fixing frame is fixed to the inner wall of the separation tank, and a pressure gauge is provided at the top of the separation tank.

[0010] Preferably, the preheating component includes an outer sleeve fixed to the outside of the main steam pipe, and a heating tube is disposed inside the outer sleeve, with a temperature sensor disposed inside the heating tube.

[0011] Preferably, a heat-conducting layer is provided between the heating tube and the main steam tube, and a heat-insulating layer is provided between the heating tube and the outer sleeve. The heating tube and the temperature sensor are externally connected to a controller.

[0012] Preferably, mounting rings are provided on both sides of the outer sleeve, and fixing bolts are screwed between the mounting rings and the main steam pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model is equipped with a dehumidification component, a separation tank, an air inlet, an external interface, a guide tube, centrifugal blades, a connection port, a drain port, and a water guide plate. The airflow is guided into the separation tank through the air inlet. The airflow rotates at high speed under the action of the centrifugal blades. The gas is discharged from the guide tube and the connection port, and the liquid is discharged from the water guide plate. This can effectively separate the moisture in the steam, which helps to ensure the stability of the steam humidity and prevents the condensate in the steam from hitting the pipe bends or turbine blades in the high-speed steam flow, thereby improving the service life of the equipment.

[0015] 2. This utility model, through the installation of a preheating component, outer sleeve, mounting ring, fixing bolt, heating pipe, temperature sensor, heat-conducting layer, insulation layer and controller, heats the main steam pipe through the heating pipe and monitors the pipe temperature, which can realize the preheating operation of the pipeline before the steam turbine starts working. This facilitates the temperature stability during the steam flow process, prevents excessive temperature difference from generating thermal stress, reduces the risk of leakage from flanges and valves, and reduces the "warm-up" stage of the steam turbine body, thereby shortening the entire start-up process.

[0016] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure according to the present utility model;

[0019] Figure 2 This is an exploded view of the overall structure according to this utility model;

[0020] Figure 3 An exploded view of the dehumidification component according to this utility model;

[0021] Figure 4 This is an exploded view of the preheating component according to the present invention.

[0022] In the diagram: 1. High-pressure cylinder; 2. Low-pressure cylinder; 3. Inlet pipe; 4. Main steam pipe; 5. Dehumidification assembly; 51. Separator tank; 52. Inlet; 53. External interface; 54. Flow guide tube; 55. Centrifugal blades; 56. Connection port; 57. Drain outlet; 58. Water guide plate; 59. Fixing bracket; 510. Pressure gauge; 6. Preheating assembly; 61. Outer jacket; 62. Mounting ring; 63. Fixing bolt; 64. Heating tube; 65. Temperature sensor; 66. Heat-conducting layer; 67. Insulation layer; 68. Controller. Detailed Implementation

[0023] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] like Figure 1 As shown in Figure 4, this embodiment provides a waste heat power generation turbine with a protection mechanism, including a high-pressure cylinder 1, a low-pressure cylinder 2, a dehumidification component 5, and a preheating component 6. An air inlet pipe 3 is provided on the side of the high-pressure cylinder 1, and a main steam pipe 4 is connected to the upper end of the high-pressure cylinder 1 and the low-pressure cylinder 2. The dehumidification component 5 is connected to the outer end of the air inlet pipe 3, and the preheating component 6 is installed outside the main steam pipe 4.

[0025] In this embodiment, the dehumidification component 5 includes a separator tank 51. The separator tank 51 has an air inlet 52 and an external interface 53 at both ends. A guide tube 54 is provided inside the separator tank 51, and centrifugal blades 55 are provided on the outer wall of the guide tube 54. A connection port 56 is provided on the other side of the guide tube 54, and the connection port 56 is connected to the air inlet 52. The inner side of the air inlet 52 is connected to the air inlet pipe 3. The external interface 53 is connected to an external steam boiler. The upper and lower ends of the guide tube 54 are connected. A drain outlet 57 is provided at the bottom of the separator tank 51. A water guide plate 58 is provided at the lower end inside the separator tank 51. A fixing frame 59 is provided on the outer side of the water guide plate 58. 9 is fixed on the inner wall of the separator 51. A pressure gauge 510 is installed on the top of the separator 51. Airflow is guided into the separator 51 through the air inlet 52. The airflow rotates at high speed under the action of the centrifugal blades 55, which separates the gas and liquid. The gas is discharged from the guide tube 54 and the connection port 56, and the liquid is discharged from the water guide plate 58. This can effectively separate the moisture in the steam, which helps to ensure the stability of the steam humidity, prevents the condensate in the steam from hitting the pipe bends or turbine blades in the high-speed steam flow, and prevents impurities such as dissolved oxygen and salt in the water from aggravating the corrosion of the inner wall of the pipe, thus improving the service life of the equipment.

[0026] In this embodiment, the preheating component 6 includes an outer sleeve 61 fixed to the outside of the main steam pipe 4. A heating pipe 64 is installed inside the outer sleeve 61, and a temperature sensor 65 is installed inside the heating pipe 64. A heat-conducting layer 66 is installed between the heating pipe 64 and the main steam pipe 4, and a heat-insulating layer 67 is installed between the heating pipe 64 and the outer sleeve 61. A controller 68 is externally connected to the heating pipe 64 and the temperature sensor 65. Mounting rings 62 are installed on both sides of the outer sleeve 61, and fixing bolts 63 are screwed between the mounting rings 62 and the main steam pipe 4. The controller 68 controls the operation of the heating pipe 64 and the temperature sensor 65. The heating pipe 64 heats the main steam pipe 4, and the temperature sensor 65 monitors the pipe temperature. This enables the preheating operation of the pipe before the steam turbine starts working, which helps to ensure the temperature stability during the steam flow process, prevents excessive temperature difference from generating thermal stress, reduces the risk of leakage from flanges and valves, and reduces the "warm-up" stage of the steam turbine body, thereby shortening the entire startup process.

[0027] The working principle and process of this utility model are as follows: When in use, the separator 51 is connected to the air inlet 3 through the air inlet 52. Steam enters the separator 51 through the external interface 53 and rotates at high speed under the action of the centrifugal blades 55, which separates the gas and liquid. The gas is discharged from the guide tube 54 and the connection port 56 and enters the air inlet 3, while the liquid is discharged from the water guide plate 58. This ensures that the humidity of the steam entering the turbine is safe and stable. Before the turbine starts working, the heating tube 64 can be turned on in advance to heat the main steam pipe 4. The temperature sensor 65 monitors the pipe temperature, which can realize the preheating operation of the pipe before the turbine starts working, and can reduce the "warm-up" stage of the turbine body.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A waste heat power generation steam turbine with a protection mechanism, characterized in that, It includes a high-pressure cylinder (1), a low-pressure cylinder (2), a dehumidification component (5), and a preheating component (6). The high-pressure cylinder (1) is provided with an air inlet pipe (3) on its side. The high-pressure cylinder (1) and the low-pressure cylinder (2) are connected to a main steam pipe (4) at their upper ends. The dehumidification component (5) is connected to the outer end of the air inlet pipe (3). The preheating component (6) is installed outside the main steam pipe (4). The dehumidification component (5) includes a separator (51), which has an air inlet (52) and an external interface (53) at both ends. The separator (51) has a guide tube (54) inside and centrifugal blades (55) on the outer wall of the guide tube (54). The guide tube (54) has a connection port (56) on the other side and the connection port (56) is connected to the air inlet (52).

2. A waste heat power generation steam turbine with a protection mechanism according to claim 1, characterized in that: The air inlet (52) is connected to the air inlet pipe (3) on the inside, the external interface (53) is connected to the external steam boiler, the upper and lower ends of the guide tube (54) are connected through, and the bottom of the separator (51) is provided with a drain outlet (57).

3. A waste heat power generation turbine with a protection mechanism according to claim 1, characterized in that: The lower end of the separator (51) is provided with a water guide plate (58), and a fixing frame (59) is provided on the outside of the water guide plate (58) and the fixing frame (59) is fixed on the inner wall of the separator (51). A pressure gauge (510) is provided on the top of the separator (51).

4. A waste heat power generation steam turbine with a protection mechanism according to claim 1, characterized in that: The preheating component (6) includes an outer sleeve (61) fixed outside the main steam pipe (4), and a heating pipe (64) is provided inside the outer sleeve (61) and a temperature sensor (65) is provided inside the heating pipe (64).

5. A waste heat power generation steam turbine with a protection mechanism according to claim 4, characterized in that: A heat-conducting layer (66) is provided between the heating tube (64) and the main steam pipe (4), and a heat-insulating layer (67) is provided between the heating tube (64) and the outer sleeve (61). A controller (68) is externally connected to the heating tube (64) and the temperature sensor (65).

6. A waste heat power generation steam turbine with a protection mechanism according to claim 5, characterized in that: The outer sleeve (61) is provided with mounting rings (62) on both sides, and the mounting rings (62) are screwed to the main steam pipe (4) with fixing bolts (63).

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