Turbine and air compressor

Abstract

The utility model discloses a turbine and an air compressor, and relates to the technical field of fluid machinery. The turbine comprises a turbine main body, a bearing is arranged in the turbine main body, a carbon ring seat is further arranged in the turbine main body, the carbon ring seat is provided with a main carbon ring and a three-petal type carbon ring which surround the bearing, and the turbine main body is further provided with a backflow pressure relief hole communicated with an inlet of the turbine main body. And the pressure relief hole is positioned between the main carbon ring and the three-petal type carbon ring. The air compressor comprises a turbine and further comprises an impeller, and the impeller is connected with the bearing. The turbine and the air compressor are suitable for large-shaft-diameter and high-pressure environments, and have the advantages of being good in sealing effect and wide in application range.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid machinery technical field, concretely relates to a turbine and air compressor. BACKGROUND

[0002] The compressed air energy storage technology has the advantages of high efficiency, environmental protection, safety and the like, and has broad development prospects. The air compressor with the compressed air energy storage technology utilizes electric energy to compress and store air, and releases energy when needed to be converted into mechanical energy or electric energy. The key equipment of the air compressor is a turbine, and the shaft end sealing technology in the turbine is an important technology for ensuring the efficiency of the turbine.

[0003] At present, the shaft end sealing of the turbine is generally realized by relying on a carbon ring. However, in some large turbines, the carbon ring needs to resist a large pressure (for example, more than 3 MPA), and the carbon ring is soft in material, so it is easy to deform in a large pressure turbine, resulting in gas leakage.

[0004] Therefore, the prior art needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model solves the technical problem that the carbon ring in the prior art is easy to deform under high pressure, and the turbine has poor sealing effect, and aims to provide a turbine and air compressor, adopt corresponding technical means, applicable to large shaft diameter and high pressure environment, have the advantages that the sealing effect is good, and the application range is wide.

[0006] The utility model realizes the following technical scheme:

[0007] In a first aspect, the utility model provides a turbine, including turbine main part, the inside of turbine main part is provided with the rotating shaft, the inside of turbine main part still is provided with carbon ring seat, carbon ring seat is provided with the main carbon ring and three petal formula carbon ring around rotating shaft, turbine main part still is provided with and the backflow pressure relief hole of inlet intercommunication of turbine main part, the pressure relief hole is located between main carbon ring and three petal formula carbon ring.

[0008] Further, in the utility model, the carbon ring seat is provided with a mounting groove, the mounting groove is provided with a reinforcing ring, and the main carbon ring is connected with the reinforcing ring.

[0009] Further, in the utility model, the outer side of the main carbon ring is provided with a convex ring, and the reinforcing ring is provided with a groove for inserting and cooperating with the convex ring.

[0010] Further, in the utility model, the carbon ring seat is provided with an anti-rotation dowel, and the anti-rotation dowel is connected with the reinforcing ring.

[0011] Further, in the utility model, the anti-rotation dowel is configured as a screw.

[0012] Furthermore, in this invention, the aforementioned main carbon ring is located on the impeller side close to the turbine body, while the three-lobed carbon ring is located on the impeller side away from the turbine body.

[0013] Furthermore, in this invention, a spring is provided on the outer side of the aforementioned three-lobed carbon ring.

[0014] Furthermore, in this invention, the aforementioned three-lobed carbon ring is provided in multiple forms.

[0015] Furthermore, in this invention, the aforementioned main carbon ring is provided in multiple forms.

[0016] Secondly, this utility model also provides an air compressor, which includes a turbine and an impeller, the impeller being connected to the rotating shaft.

[0017] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0018] This utility model's turbine and air compressor incorporates two sealing structures: a main carbon ring and a three-lobed carbon ring. A reflux vent is located between the main carbon ring and the three-lobed carbon ring, connected to the turbine body inlet. The reflux vent depressurizes the gas leaking from the main carbon ring, reducing the working pressure of the rear three-lobed carbon ring and thus decreasing the leakage of the turbine and air compressor. The reflux vent returns the process gas leaking from the main carbon ring to the turbine body inlet, reducing both the direct leakage of the main carbon ring to the environment and the working pressure of the rear three-lobed carbon ring, effectively minimizing the amount of process gas leaking directly into the environment and resulting in better performance. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the embodiments of the present invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the turbine structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 for Figure 1 Enlarged diagram of point B in the middle.

[0023] The attached diagram shows the markings and corresponding component names: 1-Turbine body, 101-Shaft, 102-Relief hole, 2-Carbon ring seat, 201-Mounting groove, 3-Main carbon ring, 301-Convex ring, 4-Three-lobed carbon ring, 401-Spring, 5-Reinforcing ring, 501-Groove, 6-Anti-rotation pin. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this utility model are only for explaining the present utility model and are not intended to limit the present utility model. The following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the present utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0026] Example 1

[0027] This embodiment 1 provides a turbine, such as Figures 1-3 As shown, the specific structure is described below.

[0028] In Embodiment 1 of this utility model, the turbine includes four parts: turbine body 1, carbon ring seat 2, main carbon ring 3, and three-lobed carbon ring 4. The turbine body 1 serves as the housing, and the carbon ring seat 2, main carbon ring 3, and three-lobed carbon ring 4 are all installed inside the turbine body 1. A rotating shaft 101 is also installed inside the turbine body 1. The main carbon ring 3 and three-lobed carbon ring 4 are used to achieve shaft end sealing.

[0029] Furthermore, in combination Figure 1 As shown, in this embodiment, four main carbon rings 3 and four three-lobed carbon rings 4 are installed, corresponding to eight carbon ring seats 2. The left end of the turbine body 1 is closer to the impeller, and the right end of the turbine body 1 is closer to the bearing. Therefore, the four main carbon rings 3 are located closer to the impeller, and the four three-lobed carbon rings 4 are located farther from the impeller.

[0030] Furthermore, combining Figure 1As shown, a return pressure relief hole 102 is provided in the middle of the turbine body 1. The return pressure relief hole 102 is connected to the rotating chamber of the shaft 101, and is also connected to the inlet of the turbine body 1. On the one hand, the return pressure relief hole 102 returns the process gas leaking from the main carbon ring 3 to the inlet of the turbine body 1, thereby reducing the amount of gas directly leaking from the main carbon ring 3 to the environment. On the other hand, the return pressure relief hole 102 depressurizes the gas leaking from the main carbon ring 3 by returning it, thereby reducing the working pressure of the rear three-lobed carbon ring 4 and preventing the three-lobed carbon ring 4 from deforming.

[0031] In some implementations of this embodiment, combined with Figure 1 and Figure 2 As shown, a reinforcing ring 5 is provided to restrict the main carbon ring 3, improve the main carbon ring 3's ability to withstand process gas pressure differentials, and reduce the deformation of the main carbon ring 3 under pressure. An annular mounting groove 201 is provided on the inner side wall of the carbon ring seat 2. The reinforcing ring 5 is installed inside the mounting groove 201, and an anti-rotation pin 6 is designed. The anti-rotation pin 6 connects the reinforcing ring 5 and the carbon ring seat 2, thereby fixing the carbon ring seat 2 inside the mounting groove 201.

[0032] Furthermore, an annular groove 501 is formed on the inner wall of the reinforcing ring 5, and a corresponding annular protrusion 301 is formed on the outer side of the main carbon ring 3. The cross-section of the protrusion 301 is rectangular. After installation, the protrusion 301 is embedded in the groove 501, thereby allowing the reinforcing ring 5 to better restrict the deformation of the main carbon ring 3.

[0033] The instruction manual is required. The anti-rotation pin 6 can be made of screws, which has the advantages of being easy to purchase and easy to disassemble and assemble.

[0034] In some implementations of this embodiment, combined with Figure 1 and Figure 3 As shown, the three-lobed carbon ring 4 is installed in the groove of the carbon ring seat 2. An annular groove is located on the outer wall of the three-lobed carbon ring 4. The spring 401 is also annular and is fitted into the annular groove of the three-lobed carbon ring 4. The spring 401 is used to limit the shape of the three-lobed carbon ring 4, allowing it to quickly return to its original shape even if it undergoes significant deformation under pressure.

[0035] Example 2

[0036] This embodiment provides an air compressor that uses the turbine from Embodiment 1 and also includes an impeller. The turbine shaft 101 is connected to the impeller.

[0037] The working principle of the turbine and air compressor of this utility model is as follows:

[0038] This utility model's turbine and air compressor incorporates two sealing structures: a main carbon ring 3 and a three-lobed carbon ring 4. A return pressure relief hole 102 is provided between the main carbon ring 3 and the three-lobed carbon ring 4, and this hole is connected to the inlet of the turbine body 1. The return pressure relief hole 102 recirculates and depressurizes the gas leaking from the main carbon ring 3, reducing the working pressure of the rear three-lobed carbon ring 4, thereby reducing the leakage of the turbine and air compressor. The return pressure relief hole 102 also recirculates the process gas leaking from the main carbon ring 3 back to the inlet of the turbine body 1, reducing both the direct leakage of the main carbon ring 3 to the environment and the working pressure of the rear three-lobed carbon ring 4. This effectively reduces the amount of process gas directly leaking into the environment, resulting in better performance. The turbine and air compressor has higher pressure resistance and is suitable for sealing environments with large shaft diameters (50–200 mm) and high pressure environments (3.0–12.0 MPa).

[0039] In summary, the turbine provided by this utility model includes a turbine body 1, inside which a rotating shaft 101 is disposed. A carbon ring seat 2 is also disposed inside the turbine body 1. The carbon ring seat 2 is provided with a main carbon ring 3 and a three-lobed carbon ring 4 surrounding the rotating shaft 101. The turbine body 1 is also provided with a return pressure relief hole 102 communicating with the inlet of the turbine body 1, located between the main carbon ring 3 and the three-lobed carbon ring 4. The carbon ring seat 2 is provided with a mounting groove 201, and a reinforcing ring 5 is provided in the mounting groove 201. The main carbon ring 3 is connected to the reinforcing ring 5. A convex ring 301 is provided on the outer side of the main carbon ring 3, and a groove 501 is provided in the reinforcing ring 5 for the convex ring 301 to be inserted and fitted. The carbon ring seat 2 is provided with an anti-rotation pin 6, which is connected to the reinforcing ring 5. The anti-rotation pin 6 is configured as a screw. The main carbon ring 3 is located on the impeller side closer to the turbine body 1, and the three-lobed carbon ring 4 is located on the impeller side farther from the turbine body 1. A spring 401 is provided on the outer side of the aforementioned three-lobed carbon ring 4. Multiple three-lobed carbon rings 4 are provided. Multiple main carbon rings 3 are provided. This utility model also provides an air compressor, which includes a turbine and an impeller, the impeller being connected to a rotating shaft 101.

[0040] Therefore, the turbine and air compressor of this invention have the advantages of good sealing effect and wide application range.

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A turbine, comprising a turbine body (1), wherein a rotating shaft (101) is disposed inside the turbine body (1), characterized in that, The turbine body (1) is also provided with a carbon ring seat (2), which is provided with a main carbon ring (3) and a three-lobed carbon ring (4) surrounding the rotating shaft (101). The turbine body (1) is also provided with a return pressure relief hole (102) communicating with the inlet of the turbine body (1). The pressure relief hole (102) is located between the main carbon ring (3) and the three-lobed carbon ring (4).

2. The turbine according to claim 1, characterized in that, The carbon ring seat (2) is provided with an installation groove (201), and the installation groove (201) is provided with a reinforcing ring (5). The main carbon ring (3) is connected to the reinforcing ring (5).

3. The turbine according to claim 2, characterized in that, The outer side of the main carbon ring (3) is provided with a convex ring (301), and the reinforcing ring (5) is provided with a groove (501) for the convex ring (301) to be inserted and fitted.

4. The turbine according to claim 2, characterized in that, The carbon ring seat (2) is provided with an anti-rotation pin (6), which is connected to the reinforcing ring (5).

5. The turbine according to claim 4, characterized in that, The anti-rotation pin (6) is configured as a screw.

6. The turbine according to claim 1, characterized in that, The main carbon ring (3) is located on the impeller side close to the turbine body (1), and the three-lobed carbon ring (4) is located on the impeller side away from the turbine body (1).

7. The turbine according to claim 1, characterized in that, A spring (401) is provided on the outer side of the three-lobed carbon ring (4).

8. The turbine according to claim 1, characterized in that, The three-lobed carbon ring (4) is provided in multiple forms.

9. The turbine according to claim 1, characterized in that, The main carbon ring (3) is provided in multiple forms.

10. An air compressor, characterized in that, The turbine includes any one of claims 1-9, and also includes an impeller connected to the shaft (101).

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