Compressor segmented inlet guide vane

Abstract

The utility model discloses a compressor sectional type entrance flow guide device. Including panel, flow guide cylinder, flow guide body, the flow guide body is fixed on the mounting step of impeller wheel cover inner chamber, flow guide body inner wall curve is matched with impeller curve, and the clearance cooperation of flow guide body inner wall and impeller, the flow guide body is connected with flow guide cylinder, and the gradually increasing of flow guide cylinder cylinder diameter is outward, the panel is installed at impeller wheel cover entrance, and the flow guide cylinder is installed on the panel, and the flow guide passage formed by flow guide cylinder is communicated with impeller, according to the work efficiency demand of impeller, and the corresponding panel, flow guide cylinder, flow guide body are selected, the utility model discloses the entrance flow guide device of sectional type replaces the originally integral type structure, not only has reduced design and casting difficulty, has reduced production cost, and is convenient to dismouting. Can according to the work efficiency demand of impeller, select suitable panel, flow guide cylinder, flow guide body, adjust the clearance between flow guide body and impeller, and it is convenient to optimize impeller work efficiency.

Description

Technical fields:

[0001] This utility model belongs to the field of centrifugal compressor manufacturing technology, and specifically relates to a segmented inlet guide device for a compressor. Background technology:

[0002] Centrifugal compressors are widely used in industries such as petrochemicals, coal chemicals, natural gas, and carbon dioxide capture. The impeller is an important component of a centrifugal compressor, and a guide device is usually installed in front of the impeller to facilitate the flow of air into and out of the impeller in the direction guided by the device.

[0003] Existing centrifugal compressor guide vanes are typically integral structures, which are challenging to design and manufacture, increasing production costs. The integral structure is also heavy and inconvenient to install. Furthermore, the integral design of the guide vane cannot adjust the clearance between itself and the impeller, making it impossible to optimize the impeller's efficiency.

[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 invention is to provide a segmented inlet guide device for a compressor, thereby overcoming the defects in the prior art.

[0006] To achieve the above objectives, this utility model provides a segmented inlet guide device for a compressor, comprising a panel, a guide cylinder, and a guide fluid; the guide fluid is fixed on an installation step inside the impeller shroud, the inner wall curve of the guide fluid matches the impeller curve, and the inner wall of the guide fluid is in clearance fit with the impeller; the guide fluid is connected to the guide cylinder, and the guide cylinder gradually increases in diameter outward; the panel is installed at the impeller shroud inlet, and the guide cylinder is installed on the panel, the guide channel formed by the guide cylinder communicating with the impeller; the appropriate panel, guide cylinder, and guide fluid are selected according to the impeller's working efficiency requirements.

[0007] Preferably, in the technical solution, the guide fluid includes a guide component, a mounting component, and a connecting component, and the guide fluid is integrated with the mounting component and the connecting component; the mounting component is set on the mounting step inside the impeller shroud, and the guide component is fixed inside the impeller shroud by the mounting component; the inner side of the guide component is clearance-fitted with the impeller, and the inner side of the guide component has an arc-shaped structure, which is adapted to the impeller structure; the connecting component is located at the front end of the guide component, and an annular step is provided on the connecting component, and the guide tube is set in the annular step.

[0008] Preferably, in the technical solution, the guide tube includes a guide component, a front guide component, and a rear guide component. The guide component is integrated with the front guide component and the rear guide component. The rear guide component is set in the annular step, and the outer diameter of the rear guide component matches the inner diameter of the annular step. A through hole is provided in the center of the panel. The front guide component is abutted and fixed at the through hole. The guide component has a variable diameter structure, and the diameter of the guide component gradually decreases from the front guide component end to the rear guide component end. The guide channel formed by the front guide component, the guide component, and the rear guide component is connected to the impeller.

[0009] Preferably, in the technical solution, an installation notch is provided on the contact surface between the rear guide and the annular step to facilitate disassembly and assembly.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] Replacing the original monolithic structure with a segmented inlet guide device not only reduces design and casting complexity and production costs, but also makes each component lighter than the overall structure, facilitating assembly and disassembly. Appropriate panels, guide tubes, and guide fluids can be selected based on the impeller's efficiency requirements, and the gap between the guide fluid and the impeller can be adjusted to optimize impeller efficiency. Attached image description:

[0012] Figure 1 This is a schematic diagram of the segmented inlet guide device for the compressor of this utility model;

[0013] Figure 2 for Figure 1 Enlarged view of part A;

[0014] Figure 3 This is a schematic diagram of the assembly of the segmented inlet guide device for the compressor of this utility model. Detailed implementation method:

[0015] 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.

[0016] 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.

[0017] like Figure 1-3As shown, a segmented inlet guide device for a compressor includes a panel 1, a guide cylinder 2, and a guide fluid 3. The guide fluid 3 is fixed on the mounting step inside the impeller casing 4. The inner wall curve of the guide fluid 3 matches the curve of the impeller 5, and the inner wall of the guide fluid 3 is in clearance fit with the impeller 5. The guide fluid 3 is connected to the guide cylinder 2, and the radial direction of the guide cylinder 2 gradually increases outward. The panel 1 is installed at the inlet of the impeller casing 4, and the guide cylinder 2 is installed on the panel 1. The guide channel formed by the guide cylinder 2 is connected to the impeller 5. The appropriate panel 1, guide cylinder 2, and guide fluid 3 are selected according to the working efficiency requirements of the impeller 5.

[0018] The guide fluid 3 includes a guide element 30, a mounting element 31, and a connecting element 32. The guide fluid 30 is integrated with the mounting element 31 and the connecting element 32. The mounting element 31 is installed on the mounting step inside the impeller cover 4, and the guide element 30 is fixed inside the impeller cover 4 by the mounting element 31. The inner side of the guide element 30 is clearance-fitted with the impeller 5. The inner side of the guide element 30 has an arc-shaped structure, which is adapted to the structure of the impeller 5. The connecting element 32 is located at the front end of the guide element 30. The connecting element 32 is provided with an annular step 33, and the guide tube 2 is installed in the annular step 33.

[0019] The guide tube 2 includes a guide member 20, a front guide member 21, and a rear guide member 22. The guide member 20 is integrated with the front guide member 21 and the rear guide member 22. The rear guide member 22 is disposed in the annular step 33. The outer diameter of the rear guide member 22 matches the inner diameter of the annular step 33. An installation notch 23 is provided on the contact surface between the rear guide member 22 and the annular step 33 for easy disassembly and assembly. A through hole is provided in the center of the panel 1. The front guide member 21 is fixed at the through hole. The guide member 20 has a variable diameter structure, and the diameter of the guide member 20 gradually decreases from the front guide member 21 end to the rear guide member 22 end. The guide channel formed by the front guide member 21, the guide member 20, and the rear guide member 22 is connected to the impeller 5.

[0020] Replacing the original monolithic structure with a segmented inlet guide device not only reduces design and casting complexity and production costs, but also makes each component lighter than the overall structure, facilitating assembly and disassembly. Appropriate panels, guide tubes, and guide fluids can be selected based on the impeller's efficiency requirements, and the gap between the guide fluid and the impeller can be adjusted to optimize impeller efficiency.

[0021] 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 segmented inlet guide device for a compressor, characterized in that: The device includes a panel, a guide tube, and a guide fluid. The guide fluid is fixed on an installation step inside the impeller shroud. The inner wall curve of the guide fluid matches the impeller curve, and the inner wall of the guide fluid is clearance-fitted with the impeller. The guide fluid is connected to the guide tube, and the guide tube gradually increases in diameter outward. The panel is installed at the impeller shroud inlet, and the guide tube is mounted on the panel. The guide channel formed by the guide tube communicates with the impeller. The appropriate panel, guide tube, and guide fluid are selected according to the impeller's working efficiency requirements.

2. The compressor segmented inlet guide device according to claim 1, characterized in that: The guide tube includes a guide component, a mounting component, and a connecting component, which are integrated with the guide component and the mounting component. The mounting component is set on the mounting step inside the impeller shroud, and the guide component is fixed inside the impeller shroud by the mounting component. The inner side of the guide component is clearance-fitted with the impeller, and the inner side of the guide component has an arc-shaped structure that is adapted to the impeller structure. The connecting component is located at the front end of the guide component, and an annular step is provided on the connecting component. The guide tube is set in the annular step.

3. The compressor segmented inlet guide device according to claim 2, characterized in that: The guide tube includes a guide component, a front guide component, and a rear guide component. The guide component is integrated with the front and rear guide components. The rear guide component is set in an annular step, and its outer diameter matches the inner diameter of the annular step. A through hole is provided in the center of the panel. The front guide component is attached and fixed at the through hole. The guide component has a variable diameter structure, and its diameter gradually decreases from the front guide component end to the rear guide component end. The guide channel formed by the front guide component, the guide component, and the rear guide component is connected to the impeller.

4. The compressor segmented inlet guide device according to claim 3, characterized in that: An installation notch is provided on the contact surface between the rear guide and the annular step.

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