A de-cooling and pressure reducing device for outputting mechanical energy

Abstract

This utility model relates to the field of steam desuperheating and pressure reducing devices, specifically to a desuperheating and pressure reducing device that outputs mechanical energy, comprising: a device housing, a rotor cover, and a rotor assembly disposed within the rotor cover; the rotor assembly includes a rotating shaft mounted rotatably within the device housing, one end of which is the mechanical energy output end; multiple rotor disks are distributed along the length of the rotating shaft, with gaps between adjacent rotor disks; a ring of guide plates is provided along the circumferential direction at the edge of the central hole of each rotor disk, the guide plates being inclined toward the other end of the rotating shaft, and the guide plates being fixed to the rotating shaft by multiple support plates; the central hole areas of all rotor disks form an exhaust channel that connects to the outlet channel.

Description

Technical Field

[0001] This utility model relates to the field of steam desuperheating and pressure reducing devices, specifically to a desuperheating and pressure reducing device that outputs mechanical energy. Background Technology

[0002] A desuperheater / pressure reducer, as the name suggests, reduces high-temperature, high-pressure steam to low-pressure, low-temperature steam usable by customers. In industrial production processes, surplus high-grade steam is commonly used to achieve qualified steam that meets process parameters. In the prior art, document CN118423679A discloses a desuperheater / pressure reducer with mechanical energy output. While reducing the temperature and pressure of high-temperature, high-pressure steam, it converts the lost energy into mechanical energy, which is then used to generate electricity through a mechanical energy utilization device, thereby achieving energy saving. It includes a housing, a rotor casing, and a rotor assembly, all housed within the rotor casing. The assembly includes a rotating shaft mounted within the housing, one end of which is connected to the mechanical energy utilization device. Multiple rotor disks are mounted on the shaft, with gaps between adjacent disks. Each rotor disk has an outlet hole, forming an outlet channel connecting to the medium outlet. Referring to the working principle of Tesla's turbine, high-speed airflow enters the gap between adjacent rotor disks and drives the rotor disks to rotate through the boundary layer effect. The rotation of the rotor disks generates mechanical energy, which is output to the generator through the shaft to generate electricity. High-temperature and high-pressure steam converts some of the energy into mechanical energy and then reduces the pressure.

[0003] However, in the existing desuperheating and pressure reducing devices that output mechanical energy, the exhaust channels are distributed in a square shape along the axis of the rotor assembly. Steam passes through the gaps in the rotor disks and enters the exhaust channels vertically. Some of the steam flows in the opposite direction of the exhaust channels, resulting in poor steam discharge. Utility Model Content

[0004] This invention provides a desuperheating and pressure reducing device for outputting mechanical energy, which solves the problem of poor steam exhaust after flowing through the gap between the rotor discs in the prior art. By using an inclined guide plate, the steam is tilted along the exhaust direction and enters the exhaust channel, thus achieving smooth exhaust.

[0005] This utility model is achieved through the following solution: A de-cooling and pressure-reducing device for outputting mechanical energy, comprising, The equipment housing has an inlet channel and an outlet channel; The rotor cover is located inside the equipment housing, and its side wall is provided with multiple air inlets that can communicate with the inlet channel; A rotor assembly, disposed within the rotor housing, includes a rotating shaft rotatably mounted within the equipment housing, one end of which is a mechanical energy output end; multiple rotor disks are distributed along the length of the rotating shaft, with gaps between adjacent rotor disks; a ring of guide plates is provided along the circumferential direction at the edge of the central hole of each rotor disk, the guide plates are inclined toward the other end of the rotating shaft, and the guide plates are fixed to the rotating shaft by multiple support plates; The central hole area of ​​all rotor disks forms an exhaust channel that connects to the outlet channel.

[0006] Furthermore, in adjacent rotor disks, the support plate on one rotor disk is offset by an angle α relative to the support plate on the other rotor disk, and the value of α ranges from 2° to 5°. The support plates of all rotor discs divide the exhaust passage into multiple spiral sub-passes.

[0007] Furthermore, the rotor cover is a cylindrical structure, and the rotor cover includes two fixed rings distributed front and rear, with several elongated blades fixed between the two fixed rings along the circumferential direction, and two adjacent blades forming an air inlet.

[0008] Furthermore, the device housing is a cylindrical housing, the inlet channel is connected to the bottom of the device housing and is tangent to the circumferential surface of the device housing, and the outlet channel is connected to the right side wall of the device housing.

[0009] Furthermore, a vacuum conveyor is fixed to the inner wall of the outlet channel, and a branch is connected to the side wall of the inlet channel, with the other end of the branch connected to the vacuum conveyor.

[0010] Furthermore, the circumferential wall of the rotating shaft (5) is provided with three spirally distributed positioning grooves (51) along the length direction. In a rotor disk (6), the guide plate (7) is provided with three support plates (8). When the rotor disk is sleeved on the rotating shaft (5), the bottom of the three support plates (8) is respectively embedded in the three positioning grooves (51).

[0011] Furthermore, it also includes a water inlet pipe (12). The branch (11) is provided with a Venturi pipe (13), and the water inlet pipe (12) is connected to the throat section of the Venturi pipe (13) from the outer wall of the branch (11).

[0012] Furthermore, the tilt angle of the guide plate is 2°-5°.

[0013] The beneficial effects achieved by this utility model compared with the prior art are as follows: 1. The rotor disk has a ring of guide plates distributed around the edge of the central hole along the circumferential direction. The guide plates are inclined toward the other end of the rotating shaft. The guide plates are fixed to the rotating shaft by multiple support plates. The central hole area of ​​the rotor disk forms an exhaust channel that can connect to the outlet channel. After the steam flows through the gap of the rotor disk, it is guided by the guide plate and enters the exhaust channel at an angle towards the outlet channel, avoiding the problem of some steam flowing backwards when entering the exhaust channel vertically in the past, thus achieving smooth exhaust. 2. The support plate on the rotor disk is offset by an angle α relative to the support plate on another rotor disk. The support plates of all rotor disks divide the exhaust channel into multiple spiral sub-channels, which facilitates the smooth discharge of steam into the outlet channel within the sub-channels. 3. The inlet channel is connected to the bottom of the equipment housing. The inlet channel is tangent to the circumferential surface of the equipment housing. The rotor cover includes several elongated blades. When high-temperature and high-pressure steam enters the equipment housing through the inlet channel, it enters the rotor assembly relatively evenly from all sides under the guidance of the rotor cover. 4. A vacuum conveyor is fixed to the inner wall of the outlet channel, and a branch is connected to the side wall of the inlet channel. The other end of the branch is connected to the vacuum conveyor, which introduces a stream of high-pressure steam into the vacuum conveyor, creating a negative pressure zone in the outlet channel. This allows the steam in the exhaust channel to be discharged quickly, further improving the exhaust efficiency. 5. The water inlet pipe is connected to the throat section of the Venturi pipe from the outer wall of the branch. With this design, when a portion of the high-temperature and high-pressure steam passes through the Venturi pipe of the branch, desuperheating water is introduced into the water inlet pipe. The desuperheating water mixes with the high-temperature and high-pressure steam, thereby desuperheating and achieving the desuperheating effect on the discharged steam. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the de-cooling and pressure-reducing device described in this utility model; Figure 2 This is a front sectional view of the de-icing and pressure-reducing device described in this utility model; Figure 3 This is a schematic diagram showing the fit between the rotor cover and the rotor assembly described in this utility model; Figure 4 for Figure 3 Enlarged diagram of A in the middle; Figure 5 for Figure 2 Sectional view along the DD direction; Figure 6 This is a schematic diagram of the guide plate described in this utility model; Figure 7 This is a schematic diagram of the outlet channel and vacuum conveyor described in this utility model; Figure 8 This is a cross-sectional view of the outlet channel and vacuum conveyor described in this utility model; Figure 9 This is a schematic diagram of the rotating shaft described in this utility model; Figure 10 This is a schematic diagram of the internal structure of the branch pipe and the water inlet pipe described in this utility model; In the diagram: 1. Equipment housing, 2. Inlet channel, 3. Outlet channel, 4. Rotor cover, 41. Air inlet, 42. Blade, 43. Fixing ring, 5. Shaft, 51. Positioning groove, 6. Rotor disc, 7. Guide plate, 8. Support plate, 9. Exhaust channel, 10. Vacuum conveyor, 11. Branch, 12. Water inlet pipe, 13. Venturi pipe. Detailed Implementation

[0015] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0016] In the description of the utility model, it should be understood that the terms "front", "rear", "up", "down", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, 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 the utility model.

[0017] Example 1 like Figure 1-5 As shown, this embodiment discloses a de-cooling and pressure-reducing device for outputting mechanical energy, mainly including a base, a housing 1, a rotor cover 4, a rotor assembly, an inlet channel 2, and an outlet channel 3. The housing 1 is a cylindrical shell; for ease of description, the direction of the axis of the housing 1 is defined as the front-to-back direction. The housing 1 is assembled from a semi-circular lower cover and an upper cover. Mounting holes are fixed on both sides of the upper and lower covers, which are connected by bolts, making installation and disassembly simple. This design not only facilitates regular maintenance of the internal components but also facilitates troubleshooting. The inlet channel 2 connects to the bottom of the housing 1 and is tangent to the circumferential surface of the housing 1. The outlet channel 3 connects to the right side wall of the housing 1. The bottom surface of the housing 1 is fixed to the base.

[0018] The rotor casing 4 is a cylindrical structure, coaxially distributed within the equipment housing 1. The rotor casing 4 includes two front-to-rear fixing rings 43, positioned at the front and rear ends within the cavity of the equipment housing 1. Several elongated blades 42 are fixed between the two fixing rings along the circumferential direction. Adjacent blades 42 form air inlets 41. The blades 42 are all inclined, causing the air inlet 41 to form an angle of approximately 10° with the tangent on its circle. This design ensures that the high-temperature, high-pressure steam discharged from the inlet channel 2 enters the equipment housing 1 and, after passing through the air inlets 41 of the rotor casing 4, enters the rotor assembly relatively evenly.

[0019] The rotor assembly is coaxially mounted inside the rotor housing 4. The rotor assembly includes a shaft 5 and several rotor discs 6. The front end of the shaft 5 is rotated and mounted on the front side wall of the equipment housing 1 via a bearing sealing assembly. The front end of the shaft 5 is the mechanical energy output end and extends to the outside of the equipment housing 1, connecting to the mechanical energy-using device. In this embodiment, the mechanical energy-using device can be a generator or pump, or other common equipment. Several rotor discs 6 are evenly distributed along the length of the shaft 5. A gap of approximately 4mm is left between adjacent rotor discs 6. A ring-shaped guide plate 7 is provided along the circumferential direction at the edge of the central hole of the rotor disc 6. The guide plate 7 is inclined towards the rear end of the shaft 5, with an inclination angle of 2°-5°. Three support plates 8 are fixed on the inner circumference of the guide plate 7, and the other ends of the three support plates 8 are fixed to the shaft 5, thus allowing the rotor discs 6 to be fixed to the shaft 5. The central hole area of ​​all rotor discs 6 forms an exhaust channel 9 that connects to the outlet channel 3. This design, as... Figure 6 As shown, after the steam flows through the gap of the rotor disk, it is guided by the guide plate and enters the exhaust channel at an angle towards the outlet channel, avoiding the problem of some steam flowing backwards when entering the exhaust channel vertically in the past, thus achieving smooth exhaust.

[0020] In this embodiment, in two adjacent rotor disks 6, the support plate 8 on the rear rotor disk 6 is offset by an angle α relative to the support plate 8 on the front rotor disk 6, where α ranges from 2° to 5°. To facilitate the installation of the rotor disks 6, as follows... Figure 9 As shown, three spirally distributed positioning grooves 51 are machined along the length of the circumferential wall of the rotating shaft 5. When the rotor disk is fitted onto the rotating shaft 5 along the direction of the positioning grooves 51, the bottoms of the three support plates 8 are respectively embedded in the three positioning grooves 51. This design allows the support plates 8 of all rotor disks 6 to divide the exhaust channel 9 into three spiral sub-channels. The spiral sub-channels can guide the steam that enters the exhaust channel at an angle, allowing it to be smoothly discharged into the outlet channel.

[0021] When the de-cooling and pressure reducing device for outputting mechanical energy described in this embodiment needs to be used in conjunction with a mechanical energy user, taking the supply of mechanical energy to a generator as an example, the generator and the de-cooling and pressure reducing device described in this embodiment are mounted together on the base, and the front end of the rotating shaft 5 is connected to the output shaft of the generator as a single unit via a coupling. The specific working principle of this embodiment is as follows: Inlet channel 2 is connected to a high-temperature, high-pressure steam pipeline, and outlet channel is connected to a steam pipeline. High-temperature, high-pressure steam enters the equipment casing 1 through inlet channel 2. The high-temperature, high-pressure steam enters the gaps between the rotor discs through various air inlets on the rotor casing. Referring to the working principle of a Tesla turbine, the high-speed airflow enters the gaps between adjacent rotor discs and drives the rotor discs to rotate through the boundary layer effect. The rotation of the rotor discs generates mechanical energy, which is output to the generator through the shaft to generate electricity. After converting a portion of the energy into mechanical energy, the high-temperature, high-pressure steam is depressurized. After flowing through the gaps between the rotor discs, the steam is guided by the guide plate and tilted towards the outlet channel to enter the exhaust channel, avoiding the problem of some steam flowing backwards when entering the exhaust channel vertically in the past, thus achieving smooth exhaust.

[0022] Example 2 like Figure 7-8 As shown, this embodiment discloses a de-cooling and pressure-reducing device for outputting mechanical energy. Based on Embodiment 1, a further improvement is that a vacuum conveyor 10 is fixed to the inner wall of the outlet channel 3. The vacuum conveyor 10 is a conventional negative pressure conveying device, mainly comprising an annular cavity. The outer circumferential wall of the annular cavity is fixed to the inner circumferential wall of the outlet channel 3. Several nozzles are formed along the circumferential direction on the inner circumferential wall of the annular cavity, with the nozzles facing the axial direction of the outlet channel 3. A branch line 11 with a switching valve is connected to the side wall of the inlet channel 2, and the other end of the branch line 11 is connected to the annular cavity of the vacuum conveyor 10. To further cool down, such as... Figure 10 As shown, a Venturi conduit 13 is installed within branch 11. The Venturi conduit 13 is divided into a contraction section, a throat section, and a gradually expanding section along the fluid direction, which increases the fluid velocity and creates a vacuum zone in the throat section. An inlet pipe 12 is installed on the outer wall of branch 11. The inlet pipe 12 is used to introduce cooling water and connects to the throat section of the Venturi conduit 13 from the outer wall of branch 11.

[0023] During operation, a portion of the high-temperature, high-pressure steam in the inlet channel 2 enters the branch 11, and the water in the inlet pipe enters the Venturi pipe 13 in the branch 11. The steam mixed with water enters the annular cavity of the vacuum conveyor 10 and is then ejected from various nozzles, thereby forming a negative pressure area in the outlet channel 3. Combined with the steam discharge in the exhaust channel, this further achieves smooth exhaust and also allows for further cooling of the steam.

Claims

1. A desuperheating and pressure reducing device for outputting mechanical energy, characterized in that, Including, The equipment housing (1) is provided with an inlet channel (2) and an outlet channel (3); The rotor cover (4) is located inside the equipment housing (1), and its side wall is provided with a plurality of air inlets (41) that can communicate with the inlet channel (2). The rotor assembly is disposed inside the rotor housing (4) and includes a rotating shaft (5) rotatably mounted inside the equipment housing (1). One end of the rotating shaft (5) is a mechanical energy output end. Multiple rotor disks (6) are distributed along the length direction on the rotating shaft (5), and gaps are left between adjacent rotor disks (6). The edge of the central hole of the rotor disk (6) is provided with a ring-shaped guide plate (7) distributed along the circumferential direction. The guide plate (7) is inclined toward the other end of the rotating shaft (5), and the guide plate (7) is fixed on the rotating shaft (5) by multiple support plates (8). The central hole area of ​​all rotor disks (6) forms an exhaust passage (9) that can connect to the outlet passage (3).

2. The desuperheating and pressure reducing device according to claim 1, characterized in that, In adjacent rotor disks (6), the support plate (8) on one rotor disk (6) is offset by an angle α relative to the support plate (8) on the other rotor disk (6), and the value of α ranges from 2° to 5°. The support plates (8) of all rotor disks (6) divide the exhaust passage (9) into multiple spiral sub-passages.

3. The desuperheating and pressure reducing device according to claim 2, characterized in that, The rotor cover (4) is a cylindrical structure. The rotor cover (4) includes two fixed rings distributed front and back. Several long strip blades (42) are fixed between the two fixed rings along the circumferential direction. Two adjacent blades form an air inlet.

4. The desuperheating and pressure reducing device according to claim 2, characterized in that, The equipment housing (1) is a cylindrical housing. The inlet channel (2) is connected to the bottom of the equipment housing (1). The inlet channel (2) is tangent to the circumferential surface of the equipment housing (1). The outlet channel (3) is connected to the right side wall of the equipment housing (1).

5. The desuperheating and pressure reducing device according to claim 4, characterized in that, The inner wall of the outlet channel (3) is fixed with a vacuum conveyor (10), and the side wall of the inlet channel (2) is connected to a branch (11), the other end of which is connected to the vacuum conveyor (10).

6. The desuperheating and pressure reducing device according to claim 2, characterized in that, The circumferential wall of the rotating shaft (5) has three spirally distributed positioning grooves (51) along the length direction. In a rotor disk (6), the guide plate (7) has three support plates (8). When the rotor disk is sleeved on the rotating shaft (5), the bottom of the three support plates (8) is respectively embedded in the three positioning grooves (51).

7. The desuperheating and pressure reducing device according to claim 5, characterized in that, It also includes a water inlet pipe (12). The branch (11) is provided with a Venturi pipe (13), and the water inlet pipe (12) is connected to the throat section of the Venturi pipe (13) from the outer wall of the branch (11).

8. The desuperheating and pressure reducing device according to any one of claims 1-7, characterized in that, The tilt angle of the guide plate (7) is 2°-5°.

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