Anti-corrosion structure for main shaft of centrifugal compressor

Abstract

The utility model discloses a centrifugal compressor spindle anti-corrosion structure which comprises a transmission part, a mounting hole is formed in the transmission part, a rotating shaft is rotatably connected to the inner side wall of the mounting hole, a clamping groove is formed in the side surface of the rotating shaft, and a supporting ring is fixedly connected to the side surface of the transmission part. A limiting ring is fixedly connected to the side surface of the supporting ring, a spring is fixedly connected to the inner side wall of the supporting ring, a limiting column is fixedly connected to the end of the spring, and a universal ball is arranged at the end of the limiting column; and the side surface of the impeller is fixedly connected with an embedded ring, the side surface of the embedded ring is provided with a check block, a first sealing ring is arranged between the check block and the embedded ring, and a mounting bolt is arranged in the check block. By means of the structure, the limiting columns can be popped out through the springs, the universal balls at the ends of the limiting columns can extrude the impeller, the impeller can be prevented from deviating in the rotating process, the rotating stability of the impeller is guaranteed, and the rotating speed of the impeller cannot be affected.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal compressor technology, and in particular to a corrosion-resistant structure for the main shaft of a centrifugal compressor. Background Technology

[0002] Centrifugal compressors, as core power equipment in the industrial field, have their main shafts operating at high speeds for extended periods. These shafts are also exposed to complex environments containing humid and corrosive media, leading to severe corrosion risks for the main shaft and its mating components. Existing anti-corrosion structures for centrifugal compressor main shafts suffer from the following problems: Traditional structures often use rigid connections for impeller positioning and support. During high-speed rotation, vibration and load fluctuations can cause radial or axial displacement of the impeller, resulting in wear of sealing components and allowing corrosive media to penetrate the main shaft surface, initiating corrosion. Single-seal structures are insufficient to handle complex operating conditions such as high pressure and multiphase flow. Gas and liquid can easily seep into the impeller from the gaps between the impeller and the main shaft, or between the impeller and transmission components, leading to crevice corrosion or electrochemical corrosion. The connection between the impeller and the main shaft often relies on interference fits or complex bolt assemblies, requiring specialized tools or lengthy alignment times for disassembly and assembly, increasing maintenance costs. Furthermore, worn sealing components are difficult to replace quickly, resulting in low efficiency in anti-corrosion maintenance. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a corrosion-resistant structure for the main shaft of a centrifugal compressor. A spring is provided to eject the limiting post, allowing the universal ball at the end of the limiting post to compress the impeller, preventing positional displacement during impeller rotation, ensuring impeller rotational stability, and not affecting impeller rotation speed. Sealing rings one and two are provided to seal from both sides of the impeller. Combined with matching fitting rings to the stop blocks, the sealing performance of the device is further enhanced, preventing gas and liquid from entering the device and corroding components. The stop blocks, which match the mounting bolts, facilitate quick disassembly and assembly of the impeller, and also facilitate device maintenance and cleaning.

[0004] This utility model also provides a centrifugal compressor main shaft anti-corrosion structure as described above, comprising: a transmission component, wherein the transmission component has an internal mounting hole, a rotating shaft is rotatably connected to the inner side wall of the mounting hole, a groove is formed on the side surface of the rotating shaft, a support ring is fixedly connected to the side surface of the transmission component, a limit ring is fixedly connected to the side surface of the support ring, a spring is fixedly connected to the inner side wall of the support ring, a limit post is fixedly connected to the end of the spring, and a universal ball is provided at the end of the limit post; an impeller, wherein a fitting ring is fixedly connected to the side surface of the impeller, a stop is provided on the side surface of the fitting ring, a sealing ring is provided between the stop and the fitting ring, and a mounting bolt is provided inside the stop. The components include a spring that can eject the limiting post, allowing the universal ball at the end of the limiting post to press against the impeller. This prevents the impeller from shifting position during rotation, ensuring its rotational stability without affecting its speed. Sealing rings one and two provide sealing from both sides of the impeller. Combined with matching interlocking rings that correspond to the stop blocks, this further enhances the device's sealing performance, preventing gas and liquid from entering and corroding the components. The stop blocks, which match the mounting bolts, facilitate quick assembly and disassembly of the impeller, as well as easy maintenance and cleaning of the device.

[0005] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the spring, limiting post, and universal ball are several and arranged in an array inside the support ring. These components enable the impeller to rotate stably and prevent impeller misalignment.

[0006] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the side surface of the limiting column is slidably connected to the inner wall of the support ring, and the universal ball is located at the end of the limiting column away from the spring. These components restrict the range of motion of the limiting column, allowing the universal ball to compress the impeller without affecting its rotation and ensuring stable impeller rotation.

[0007] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the impeller is disposed on the side surface of the rotating shaft, and the inner sidewall of the impeller is fitted with a groove. These components enable the rotating shaft to drive the impeller to rotate.

[0008] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the impeller is located inside the limiting ring, and the end of the universal ball joint away from the limiting post contacts the side surface of the impeller. These components allow the limiting ring to restrict the impeller and the universal ball joint to compress the impeller, ensuring stable operation of the device.

[0009] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, a second sealing ring is provided between the support ring and the impeller, and the inner sidewall of the second sealing ring is in contact with the side surface of the transmission component. These components seal the support ring and the impeller, preventing corrosion inside the device.

[0010] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the end of the mounting bolt away from the stop block is fixedly connected to the end of the rotating shaft away from the transmission component. These components facilitate quick installation of the stop block.

[0011] According to the anti-corrosion structure for the main shaft of a centrifugal compressor described in this utility model, the side surface of the stop block contacts the side surface of the impeller, and the inner side wall of the stop block matches the mounting bolt. These components allow the stop block to restrict the position of the impeller, preventing unstable impeller rotation, and allow the stop block to rotate on the surface of the mounting bolt, thus enabling rapid installation of the stop block.

[0012] Beneficial effects:

[0013] Compared with the prior art, this utility model is equipped with a spring that can pop out the limiting post, so that the universal ball at the end of the limiting post can squeeze the impeller, which can prevent the impeller from shifting position during rotation, ensure the stability of the impeller rotation, and not affect the impeller rotation speed. It is equipped with sealing ring one and sealing ring two to seal from both sides of the impeller. With the matching fitting ring that matches the stop block, the sealing performance of the device is further enhanced, preventing gas and liquid from entering the device and corroding the components. The stop block that matches the mounting bolt facilitates quick disassembly and assembly of the impeller, and also facilitates the maintenance and cleaning of the device. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0015] Figure 1 This is an overall structural diagram of the anti-corrosion structure for the main shaft of the centrifugal compressor of this utility model;

[0016] Figure 2 This is a top view of the anti-corrosion structure of the centrifugal compressor main shaft of this utility model;

[0017] Figure 3 This is a front cross-sectional view of the anti-corrosion structure of the centrifugal compressor main shaft of this utility model;

[0018] Figure 4 This utility model relates to an anti-corrosion structure for the main shaft of a centrifugal compressor. Figure 3 Structural diagram at point A in the middle.

[0019] Legend:

[0020] 1. Transmission component; 2. Mounting hole; 3. Rotating shaft; 4. Slot; 5. Support ring; 6. Limiting ring; 7. Spring; 8. Limiting post; 9. Universal ball; 10. Impeller; 11. Fitting ring; 12. Stop block; 13. Sealing ring one; 14. Mounting bolt; 15. Sealing ring two. Detailed Implementation

[0021] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0022] Reference Figure 1-4 This utility model discloses a corrosion-resistant structure for the main shaft of a centrifugal compressor, comprising: a transmission component 1, an installation hole 2 inside the transmission component 1, a rotating shaft 3 rotatably connected to the inner wall of the installation hole 2, a groove 4 on the side surface of the rotating shaft 3, a support ring 5 fixedly connected to the side surface of the transmission component 1, a limit ring 6 fixedly connected to the side surface of the support ring 5, a spring 7 fixedly connected to the inner wall of the support ring 5, a limit post 8 fixedly connected to the end of the spring 7, the side surface of the limit post 8 slidably connected to the inner wall of the support ring 5, and a universal ball 9 provided at the end of the limit post 8. The spring 7, the limit post 8, and the universal ball 9 are multiple and arranged in an array inside the support ring 5, with the universal ball 9 located at the end of the limit post 8 away from the spring 7.

[0023] Specifically, the transmission component 1 provides power to the shaft 3. When the shaft 3 rotates, it can transmit the rotational power to the impeller 10 through the slot 4, providing a power source for the rotation of the impeller 10. The spring 7 can pop out the limiting post 8, so that the universal ball 9 at the end of the limiting post 8 can squeeze the impeller 10, which can prevent the position of the impeller 10 from shifting when it rotates, ensure the rotational stability of the impeller 10, and not affect the rotational speed of the impeller 10.

[0024] Impeller 10 is located inside the limiting ring 6. The end of the universal ball 9 away from the limiting post 8 is in contact with the side surface of impeller 10. Impeller 10 is set on the side surface of the rotating shaft 3. The inner wall of impeller 10 is fitted with the slot 4. A second sealing ring 15 is set between the support ring 5 and impeller 10. The inner wall of the second sealing ring 15 is in contact with the side surface of the transmission component 1. A fitting ring 11 is fixedly connected to the side surface of impeller 10. A stop block 12 is set on the side surface of fitting ring 11. The side surface of stop block 12 is in contact with the side surface of impeller 10. A first sealing ring 13 is set between stop block 12 and fitting ring 11. A mounting bolt 14 is set inside stop block 12. The end of mounting bolt 14 away from stop block 12 is fixedly connected to the end of rotating shaft 3 away from transmission component 1. The inner wall of stop block 12 matches mounting bolt 14.

[0025] Specifically, sealing ring 13 and sealing ring 15 can seal from both sides of impeller 10. In conjunction with the fitting ring 11 that matches the stop block 12, the sealing performance of the device is further enhanced, preventing gas and liquid from entering the device and corroding the components. The stop block 12 that matches the mounting bolt 14 facilitates quick disassembly and assembly of impeller 10, and also facilitates maintenance and cleaning of the device.

[0026] Working principle: During the use of the device, the transmission component 1 provides power to the rotating shaft 3. When the rotating shaft 3 rotates, it can transmit the rotational power to the impeller 10 through the slot 4, providing a power source for the rotation of the impeller 10. The spring 7 can pop out the limiting post 8, so that the universal ball 9 at the end of the limiting post 8 can squeeze the impeller 10, which can prevent the position of the impeller 10 from shifting when rotating, ensuring the rotational stability of the impeller 10, and will not affect the rotational speed of the impeller 10. The sealing ring 13 and the sealing ring 15 can seal from both sides of the impeller 10. With the matching fitting ring 11 that matches the stop block 12, the sealing performance of the device is further enhanced, preventing gas and liquid from entering the device and corroding the components. The stop block 12 that matches the mounting bolt 14 facilitates the quick disassembly and assembly of the impeller 10, and also facilitates the maintenance and cleaning of the device.

[0027] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A corrosion-resistant structure for the main shaft of a centrifugal compressor, characterized in that, include: A transmission component (1) has an installation hole (2) inside. A rotating shaft (3) is rotatably connected to the inner wall of the installation hole (2). A slot (4) is provided on the side surface of the rotating shaft (3). A support ring (5) is fixedly connected to the side surface of the transmission component (1). A limit ring (6) is fixedly connected to the side surface of the support ring (5). A spring (7) is fixedly connected to the inner wall of the support ring (5). A limit post (8) is fixedly connected to the end of the spring (7). A universal ball (9) is provided at the end of the limit post (8). Impeller (10), with a fitting ring (11) fixedly connected to the side surface of the impeller (10), a stop (12) provided on the side surface of the fitting ring (11), a sealing ring (13) provided between the stop (12) and the fitting ring (11), and a mounting bolt (14) provided inside the stop (12).

2. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The spring (7), the limiting post (8), and the universal ball (9) are several and arranged in an array inside the support ring (5).

3. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The side surface of the limiting post (8) is slidably connected to the inner wall of the support ring (5), and the universal ball (9) is located at the end of the limiting post (8) away from the spring (7).

4. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The impeller (10) is disposed on the side surface of the rotating shaft (3), and the inner wall of the impeller (10) is fitted with the slot (4).

5. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The impeller (10) is located inside the limiting ring (6), and the end of the universal ball (9) away from the limiting post (8) is in contact with the side surface of the impeller (10).

6. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, A sealing ring 2 (15) is provided between the support ring (5) and the impeller (10), and the inner wall of the sealing ring 2 (15) is in contact with the side surface of the transmission component (1).

7. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The mounting bolt (14) is fixedly connected at the end away from the stop block (12) to the end of the rotating shaft (3) away from the transmission component (1).

8. The anti-corrosion structure for the main shaft of a centrifugal compressor according to claim 1, characterized in that, The side surface of the stop block (12) is in contact with the side surface of the impeller (10), and the inner side wall of the stop block (12) is matched with the mounting bolt (14).

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