End face tooth connection impeller structure of centrifugal compressor

Abstract

The utility model relates to the technical field of centrifugal compressor equipment, and provides a centrifugal compressor end face tooth connection impeller structure which comprises an impeller and a main shaft, a first tooth part is arranged on the blade-free side of the impeller and used for being in meshed connection with the corresponding part of the main shaft, and a second tooth part is arranged at the end, corresponding to the first tooth part, of the main shaft and used for being in meshed connection with the corresponding part of the main shaft. The second tooth part and the first tooth part form a mutually-matched meshing structure, the second tooth part comprises a convex tooth connected with the end face of the main shaft, a containing groove for containing a pressure reduction block is formed in the convex tooth, the pressure reduction block slides in the containing groove, at least one end of the pressure reduction block exceeds the side wall of the convex tooth, and a sliding groove is formed in the end of the main shaft. According to the utility model, the defects in the prior art are overcome, the design is reasonable, the structure is compact, the slidable pressure reducing blocks are embedded in the convex teeth of the second tooth part, buffering is provided in the initial rotation stage of the main shaft, the initial contact stress is reduced, and the abrasion of the end face teeth is effectively dispersed and reduced, so that the service life of equipment is greatly prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of centrifugal compressor equipment, specifically to a centrifugal compressor end face toothed impeller structure. Background Technology

[0002] The rotor of a centrifugal compressor is composed of impellers and other parts mounted on a main shaft. In the current technology field, the connection between the impeller and the main shaft generally adopts the end face tooth connection method. This design not only ensures the efficient transmission of ultra-high torque, but also has excellent stability and precise positioning capabilities.

[0003] Although the end-face toothed connection structure is widely used in centrifugal compressors due to its ability to transmit ultra-large torque, strong stability and precise positioning, in practical applications, this structure will generate complex stress when subjected to force, and will inevitably suffer wear after long-term operation, requiring regular inspection and maintenance, which increases the operation and maintenance cost of the equipment. To this end, we propose an end-face toothed connection impeller structure for centrifugal compressors. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a centrifugal compressor end face toothed impeller structure to solve the aforementioned problems in the prior art.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a centrifugal compressor end face toothed impeller structure, comprising an impeller and a main shaft. The impeller has a first tooth on its bladeless side for meshing with a corresponding part of the main shaft. The main shaft has a second tooth at one end corresponding to the first tooth, forming a meshing structure that is mutually adapted with the first tooth. The second tooth includes a protrusion connected to the end face of the main shaft. A receiving groove for accommodating a pressure reducing block is formed in the protrusion. The pressure reducing block slides in the receiving groove, with at least one end extending beyond the side wall of the protrusion. A sliding groove is formed at the end of the main shaft. A slider extending into the sliding groove is provided at the bottom of the pressure reducing block. The slider is slidably connected in the sliding groove, and the two are connected by a spring.

[0008] Furthermore, the receiving groove extends through the protruding tooth, and both ends of the pressure-reducing block extend beyond the sidewall of the protruding tooth.

[0009] Furthermore, the structure of the first tooth is the same as that of the second tooth, and the sidewalls of the pressure-reducing blocks at the same position of both are in contact.

[0010] Furthermore, the protruding tooth has a trapezoidal structure, which tapers away from the main axis.

[0011] Furthermore, the receiving groove has an arc-shaped structure with its center located on the axis of the main shaft, and the pressure reducing block has an arc-shaped structure adapted to the receiving groove.

[0012] (III) Beneficial Effects

[0013] This utility model embodiment provides a centrifugal compressor end-face toothed impeller structure. It has the following beneficial effects:

[0014] 1. The protruding teeth of the second tooth have a sliding pressure relief block embedded in them, which provides buffering in the early stage of spindle rotation, reduces initial contact stress, effectively disperses and reduces wear on the end face teeth, thereby greatly extending the service life of the equipment.

[0015] 2. Both the pressure-reducing block and the receiving groove are arc-shaped structures, which can reduce the friction between the pressure-reducing block and the protruding tooth and improve the service life of the protruding tooth. Attached Figure Description

[0016] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a front view schematic diagram of the impeller structure of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the meshing structure of the first tooth and the second tooth of this utility model;

[0019] Figure 4 This is a top view of the second tooth structure of this utility model;

[0020] Figure 5 This is a top view of the slide groove structure of this utility model;

[0021] Figure 6 This is a front perspective three-dimensional schematic diagram of the protruding tooth structure of this utility model;

[0022] Figure 7 This is a bottom-view perspective view of the pressure-reducing block structure of this utility model.

[0023] In the diagram: 1. Impeller; 10. First tooth; 2. Main shaft; 20. Second tooth; 201. Protruding tooth; 202. Pressure reducing block; 203. Slide groove; 204. Slider; 205. Spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0025] See attached document Figure 1-7 A centrifugal compressor end face toothed impeller structure includes an impeller 1 and a main shaft 2. The impeller 1 has a first tooth 10 on the bladeless side for meshing with the corresponding part of the main shaft 2. The main shaft 2 has a second tooth 20 at one end corresponding to the first tooth 10, forming a meshing structure that is adapted to each other to enhance torque transmission capability and ensure torque stability. The second tooth 20 includes a plurality of protrusions 201 circumferentially connected to the end face of the main shaft 2. Each protrusion 201 has a receiving groove for accommodating a pressure reducing block 202. The pressure reducing block 202 slides in the receiving groove, with at least one end extending beyond the side wall of the protrusion 201 and abutting against the first tooth 10. The end of the main shaft 2 has a sliding groove 203. The bottom of the pressure reducing block 202 has a slider 204 extending into the sliding groove 203. The slider 204 is slidably connected in the sliding groove 203, and the two are connected by a spring 205.

[0026] In operation, the spindle 2 drives the second tooth 20 to rotate. At this time, the pressure relief block 202 inside the second tooth 20 first contacts the first tooth 10. The first tooth 10 is pushed by the pressure relief block 202 and generates a reaction force to push the pressure relief block 202. At this time, the spring 205 is compressed to provide a buffer force. The spindle 2 drives the second tooth 20 to continue to rotate. At this time, the protruding tooth 201 on the second tooth 20 contacts the first tooth 10 and pushes the first tooth 10 to rotate. Before the second tooth 20 pushes, the first tooth 10 is pushed by the pressure relief block 202, which reduces the stress between the second tooth 20 and the first tooth 10, thereby reducing the wear of the end face teeth during long-term use and greatly improving the service life of the equipment.

[0027] In this embodiment, the receiving groove penetrates through the protruding tooth 201, and both ends of the pressure reducing block 202 extend beyond the sidewall of the protruding tooth 201. During the forward and reverse rotation of the spindle 2, the pressure reducing block 202 can reduce the wear of the end face teeth.

[0028] In this embodiment, the structure of the first tooth 10 is the same as that of the second tooth 20, and the sidewalls of the pressure relief block 202 at the same position of both are in contact. The pressure relief block 202 in both the first tooth 10 and the second tooth 20 has pressure relief capability, which further reduces wear and increases the service life of the equipment.

[0029] In this embodiment, the protruding tooth 201 has a trapezoidal structure, which gradually tapers away from the main shaft 2, so as to facilitate the relative meshing and connection of the first tooth 10 and the second tooth 20, and facilitate subsequent assembly.

[0030] In this embodiment, the receiving groove is an arc-shaped structure with its center located on the axis of the main shaft 2. The pressure relief block 202 is an arc-shaped structure adapted to the receiving groove. The direction of the relative compressive force on the pressure relief block 202 is arc-shaped. Since both the pressure relief block 202 and the receiving groove are arc-shaped structures, the friction between the pressure relief block 202 and the protrusion 201 can be reduced, thereby improving the service life of the protrusion 201.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A centrifugal compressor end-face toothed impeller structure, comprising an impeller (1) and a main shaft (2), characterized in that: The impeller (1) has a first tooth (10) on the bladeless side for meshing with the corresponding part of the main shaft (2). The main shaft (2) has a second tooth (20) at one end corresponding to the first tooth (10), forming a meshing structure that is adapted to each other. The second tooth (20) includes a protruding tooth (201) connected to the end face of the main shaft (2). The protruding tooth (201) has a receiving groove for accommodating a pressure reducing block (202). The pressure reducing block (202) slides in the receiving groove, and at least one end of it extends beyond the side wall of the protruding tooth (201). The end of the main shaft (2) has a sliding groove (203). The bottom of the pressure reducing block (202) has a slider (204) extending into the sliding groove (203). The slider (204) is slidably connected in the sliding groove (203), and the two are connected by a spring (205).

2. The centrifugal compressor end face toothed impeller structure as described in claim 1, characterized in that: The receiving groove penetrates the protruding tooth (201), and both ends of the pressure reducing block (202) extend beyond the sidewall of the protruding tooth (201).

3. The centrifugal compressor end face toothed impeller structure as described in claim 2, characterized in that: The structure of the first tooth (10) is the same as that of the second tooth (20), and the sidewalls of the pressure relief block (202) at the same position of both are in contact.

4. The centrifugal compressor end face toothed impeller structure as described in claim 1, characterized in that: The protruding tooth (201) has a trapezoidal structure and tapers away from the main axis (2).

5. The centrifugal compressor end face toothed impeller structure as described in claim 1, characterized in that: The receiving groove is an arc-shaped structure with its center located on the axis of the main shaft (2). The pressure reducing block (202) is an arc-shaped structure adapted to the receiving groove.

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