A compressor gear case
By using concentric bearing modules and fluid guide connecting flanges in the centrifugal compressor gearbox, the problem of insufficient concentricity between the fluid guide and the impeller was solved, reducing noise and vibration and extending service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TI LINGTE COMPRESSOR WUXI CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-06-26
AI Technical Summary
In existing centrifugal compressor gearboxes, the flange for mounting the guide fluid and the bearing for mounting the drive shaft cannot be guaranteed to be concentric, resulting in unstable clearance between the guide fluid and the impeller, generating vibration, noise, and wear, affecting normal operation and service life.
A compressor gearbox housing was designed. By fitting a positioning mechanism around the bearing module and connecting it concentrically with the positioning mechanism via a fluid guide flange, the concentricity of the fluid guide and the impeller is ensured. The use of concentric bearing modules, fluid guide flanges, and positioning mechanisms guarantees a stable clearance between the fluid guide and the impeller during multi-stage compression.
This achieves a concentric connection between the guide vane and the impeller, reducing noise and vibration, minimizing wear, and extending the service life of both the impeller and the guide vane.
Smart Images
Figure CN224414304U_ABST
Abstract
Description
Technical fields:
[0001] This utility model belongs to the field of centrifugal compressor manufacturing technology, and specifically relates to a compressor gearbox body. Background technology:
[0002] In a centrifugal compressor, the impeller drive shaft is fixed in the bearing of the gearbox, and a guide fluid is installed outside the impeller, which is fixed to the flange of the gearbox. During operation, the drive shaft drives the impeller to rotate, and the gas is introduced into the centrifugal compressor by the guide fluid for compression.
[0003] In existing centrifugal compressor gearboxes, the flange for mounting the guide fluid and the bearing for mounting the drive shaft often cannot be guaranteed to be concentric. This results in the guide fluid and impeller not being able to be concentric, causing unstable gaps between the impeller and the guide fluid, generating vibration, noise, and wear, leading to the impeller and guide fluid malfunctioning or even being damaged.
[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content:
[0005] The purpose of this utility model is to provide a compressor gearbox housing, thereby overcoming the defects in the prior art.
[0006] To achieve the above objectives, this utility model provides a compressor gearbox housing, including a base, an upper housing, a lower housing, a bearing module, a fluid guide connecting flange, and a positioning mechanism. The lower housing is mounted on the base, and the lower housing and the upper housing are joined to form the gearbox housing. A bearing module is located at the junction of the upper and lower housings. A corresponding positioning mechanism is fitted around the outer periphery of the bearing module, and the positioning mechanism is connected to the corresponding fluid guide connecting flange. The positioning mechanism is concentric with the corresponding bearing module, and the fluid guide connecting flange is concentric with the corresponding positioning mechanism. The fluid guide connecting flange includes a connecting positioning plate with a positioning hole at its center. The inner diameter of the positioning hole is the same as the inner diameter of the corresponding bearing module. The positioning mechanism has an inner mounting hole, and the connecting positioning plate has an outer mounting hole. When the positioning hole is aligned with the center of the bearing module, the inner mounting hole aligns with the outer mounting hole. The fluid guide connecting flange is fixed to the corresponding positioning mechanism. A drive shaft is mounted on the bearing module, and a fluid guide is mounted on the fluid guide connecting flange. The impeller on the drive shaft is concentric with the fluid guide.
[0007] Preferably, in the technical solution, the positioning mechanism includes an upper bearing sleeve and a lower bearing sleeve. The upper bearing sleeve is set on the upper housing, and the lower bearing sleeve is set on the lower housing. The upper bearing sleeve and the lower bearing sleeve are assembled into an integral structure. The integral structure is fitted onto the bearing module. The upper bearing sleeve, the lower bearing sleeve and the corresponding bearing module are concentric. The lower bearing sleeve has a semi-circular structure and is provided with an internal mounting hole.
[0008] Preferably, in the technical solution, the fluid guiding connection flange includes a flange body and a connecting positioning plate. The flange body has a circular structure, and a connecting positioning plate is provided in the inner cavity of the flange body. The connecting positioning plate has a semi-circular structure, and both the flange body and the connecting positioning plate are concentric with the positioning mechanism. When the positioning hole on the connecting positioning plate is aligned with the center of the bearing module, the outer mounting hole on the connecting positioning plate is aligned with the inner mounting hole on the lower bearing sleeve, and the connecting positioning plate is connected and fixed to the lower bearing sleeve. The fluid guide is installed on the flange body.
[0009] Preferably, in the technical solution, the bearing module includes an input bearing, a primary compression drive bearing, a secondary compression drive bearing, and a tertiary compression drive bearing. The input bearings are symmetrically arranged on both sides of the gearbox body, located at the center of the joint between the upper and lower gearbox bodies. Primary and secondary compression drive bearings are respectively arranged on both sides of the input bearing on one side of the gearbox body. The secondary and tertiary compression drive bearings are symmetrically arranged on both sides of the gearbox body, and all three are located at the joint between the upper and lower gearbox bodies. Corresponding positioning mechanisms are fitted onto the outer periphery of each of the input bearings, primary compression drive bearings, secondary compression drive bearings, and tertiary compression drive bearings. Corresponding fluid guide flanges are fixedly connected to the positioning mechanisms on the outer periphery of each of the primary, secondary, and tertiary compression drive bearings.
[0010] Preferably, in the technical solution, an auxiliary positioning flange is provided on the lower housing. The auxiliary positioning flange has a semi-circular structure and is concentric with the primary compression drive bearing. The fluid guide corresponding to the primary compression drive bearing is installed and fixed on the corresponding fluid guide connecting flange and the auxiliary positioning flange.
[0011] Compared with the prior art, the present invention has the following beneficial effects:
[0012] The centrifugal compressor for raw coal gas features multi-stage compression. Through concentric bearing modules, fluid guide connecting flanges, and positioning mechanisms, the concentricity of the fluid guide and impeller is ensured. This results in a stable gap between the fluid guide and impeller during multi-stage compression, reducing noise and vibration, minimizing wear, and extending the service life of the impeller and fluid guide. Attached image description:
[0013] Figure 1 This is a schematic diagram of the compressor gearbox structure of this utility model;
[0014] Figure 2 This is a front view of the compressor gearbox of this utility model;
[0015] Figure 3 This is a left view of the compressor gearbox of this utility model;
[0016] Figure 4 This is a top view of the compressor gearbox of this utility model. Detailed implementation method:
[0017] The specific embodiments of this utility model are described in detail below, but it should be understood that the protection scope of this utility model is not limited to the specific embodiments.
[0018] Unless otherwise expressly stated, throughout the specification and claims, the term "comprising" or its variations such as "including" or "comprises" shall be understood to include the stated elements or components without excluding other elements or other components.
[0019] like Figure 1-4 As shown, a compressor gearbox includes a base 1, an upper housing 2, a lower housing 3, a bearing module 4, a fluid guide flange 5, and a positioning mechanism 6. The lower housing 3 is mounted on the base 1, and the lower housing 3 is joined with the upper housing 2 to form the gearbox. A bearing module 4 is positioned at the junction of the upper housing 2 and the lower housing 3. A corresponding positioning mechanism 6 is fitted around the outer periphery of the bearing module 4, and the positioning mechanism 6 is connected to the corresponding fluid guide flange 5. The positioning mechanism 6 is concentric with the corresponding bearing module 4, and the fluid guide flange 5 is concentric with the corresponding positioning mechanism 6. A drive shaft is mounted on the bearing module 4, and a fluid guide is mounted on the fluid guide flange 5. The impeller on the drive shaft is concentric with the fluid guide.
[0020] The positioning mechanism 6 includes an upper bearing sleeve 60 and a lower bearing sleeve 61. The upper bearing sleeve 60 is mounted on the upper housing 2, and the lower bearing sleeve 61 is mounted on the lower housing 3. The upper bearing sleeve 60 and the lower bearing sleeve 61 are assembled into an integral structure, which is fitted onto the bearing module 4. The upper bearing sleeve 60 and the lower bearing sleeve 61 are concentric with the corresponding bearing module 4. The lower bearing sleeve 61 has a semi-circular structure and an inner mounting hole 62 is provided on the lower bearing sleeve 61.
[0021] The fluid guiding flange 5 includes a flange body 50 and a connecting positioning plate 51. The flange body 50 has a circular structure, and the connecting positioning plate 51 is provided in the inner cavity of the flange body 50. The connecting positioning plate 51 has a semi-circular structure. Both the flange body 50 and the connecting positioning plate 51 are concentric with the positioning mechanism 6. A positioning hole 52 is provided at the center of the connecting positioning plate 51. The inner diameter of the positioning hole 52 is the same as the inner diameter of the corresponding bearing module 4. An external mounting hole 53 is provided on the connecting positioning plate 51. When the positioning hole 52 is aligned with the center of the bearing module 4, the external mounting hole 53 on the connecting positioning plate 51 is aligned with the internal mounting hole 62 on the lower bearing sleeve 61. The connecting positioning plate 51 is connected and fixed to the lower bearing sleeve 61. The fluid guide is installed on the flange body 50.
[0022] The bearing module 4 includes an input bearing 40, a primary compression drive bearing 41, a secondary compression drive bearing 42, and a tertiary compression drive bearing. The input bearing 40 is symmetrically arranged on both sides of the gearbox body, located at the center of the junction of the upper housing 2 and the lower housing 3. On one side of the gearbox body, the input bearing 40 is respectively provided with a primary compression drive bearing 41 and a secondary compression drive bearing 42 on both sides. The secondary compression drive bearing 42 and the tertiary compression drive bearing are symmetrically arranged on both sides of the gearbox body. The primary compression drive bearing 41, the secondary compression drive bearing 42, and the tertiary compression drive bearing are all located at the junction of the upper housing 2 and the lower housing 3. A corresponding positioning mechanism 6 is fitted on the outer periphery of each of the input bearing 40, the primary compression drive bearing 41, the secondary compression drive bearing 42, and the tertiary compression drive bearing. A corresponding fluid guide flange 5 is fixedly connected to the positioning mechanism 6 on the outer periphery of each of the primary compression drive bearing 41, the secondary compression drive bearing 42, and the tertiary compression drive bearing.
[0023] An auxiliary positioning flange 30 is provided on the lower housing 3. The auxiliary positioning flange 30 has a semi-circular structure and is concentric with the primary compression drive bearing 41. The fluid guide corresponding to the primary compression drive bearing 41 is installed and fixed on the corresponding fluid guide connecting flange 5 and the auxiliary positioning flange 30.
[0024] The centrifugal compressor for raw coal gas features multi-stage compression. Through concentric bearing modules, fluid guide connecting flanges, and positioning mechanisms, the concentricity of the fluid guide and impeller is ensured. This results in a stable gap between the fluid guide and impeller during multi-stage compression, reducing noise and vibration, minimizing wear, and extending the service life of the impeller and fluid guide.
[0025] The foregoing description of specific exemplary embodiments of the present invention is for illustrative and explanatory purposes. These descriptions are not intended to limit the present invention to the precise forms disclosed, and it will be apparent that many changes and variations can be made in accordance with the foregoing teachings. The exemplary embodiments were chosen and described in order to explain the specific principles of the present invention and its practical application, thereby enabling those skilled in the art to implement and utilize various different exemplary embodiments of the present invention, as well as various different choices and variations. The scope of the present invention is intended to be defined by the claims and their equivalents.
Claims
1. A compressor gearbox housing, comprising a base, an upper housing, a lower housing, a bearing module, a fluid guide flange, and a positioning mechanism; the lower housing is disposed on the base, the lower housing and the upper housing are joined to form the gearbox housing, and a bearing module is disposed at the joint between the upper housing and the lower housing; characterized in that: The bearing module is fitted with a corresponding positioning mechanism, which is connected to the corresponding fluid guide flange. The positioning mechanism is concentric with the bearing module, and the fluid guide flange is concentric with the positioning mechanism. The fluid guide flange includes a connecting positioning plate with a positioning hole at its center. The inner diameter of the positioning hole is the same as the inner diameter of the bearing module. The positioning mechanism has an inner mounting hole, and the connecting positioning plate has an outer mounting hole. When the positioning hole is aligned with the center of the bearing module, the inner mounting hole is aligned with the outer mounting hole. The fluid guide flange is fixed to the corresponding positioning mechanism. The drive shaft is mounted on the bearing module, and the fluid guide is mounted on the fluid guide flange. The impeller on the drive shaft is concentric with the fluid guide.
2. The compressor gearbox housing according to claim 1, characterized in that: The positioning mechanism includes an upper bearing sleeve and a lower bearing sleeve. The upper bearing sleeve is set on the upper housing, and the lower bearing sleeve is set on the lower housing. The upper bearing sleeve and the lower bearing sleeve are assembled into an integral structure. The integral structure is fitted onto the bearing module. The upper bearing sleeve, the lower bearing sleeve and the corresponding bearing module are concentric. The lower bearing sleeve has a semi-circular structure and is provided with an internal mounting hole.
3. The compressor gearbox housing according to claim 2, characterized in that: The fluid guide flange includes a flange body and a connecting positioning plate. The flange body has a circular structure, and the connecting positioning plate is installed in the inner cavity of the flange body. The connecting positioning plate has a semi-circular structure. Both the flange body and the connecting positioning plate are concentric with the positioning mechanism. When the positioning hole on the connecting positioning plate is aligned with the center of the bearing module, the outer mounting hole on the connecting positioning plate is aligned with the inner mounting hole on the lower bearing sleeve, and the connecting positioning plate is connected and fixed to the lower bearing sleeve. The fluid guide is installed on the flange body.
4. The compressor gearbox housing according to claim 1, characterized in that: The bearing module includes an input bearing, a primary compression drive bearing, a secondary compression drive bearing, and a tertiary compression drive bearing. The input bearings are symmetrically arranged on both sides of the gearbox body, located at the center of the joint between the upper and lower gearbox bodies. Primary and secondary compression drive bearings are respectively arranged on both sides of the input bearing on one side of the gearbox body. The secondary and tertiary compression drive bearings are symmetrically arranged on both sides of the gearbox body, and all three are located at the joint between the upper and lower gearbox bodies. Corresponding positioning mechanisms are fitted onto the outer periphery of each input bearing, primary compression drive bearing, secondary compression drive bearing, and tertiary compression drive bearing. Corresponding fluid guide flanges are fixedly connected to the positioning mechanisms on the outer periphery of each primary, secondary, and tertiary compression drive bearing.
5. The compressor gearbox housing according to claim 4, characterized in that: An auxiliary positioning flange is provided on the lower housing. The auxiliary positioning flange has a semi-circular structure and is concentric with the primary compression drive bearing. The fluid guide corresponding to the primary compression drive bearing is installed and fixed on the corresponding fluid guide connection flange and the auxiliary positioning flange.