Centrifugal compressor positioning key and centrifugal compressor

Abstract

According to the technical scheme, a first positioning groove is formed in an upper partition plate, a second positioning groove is formed in an upper machine shell, after the upper partition plate and the upper machine shell are assembled, the first positioning groove communicates with the second positioning groove, one end of a positioning block is embedded into the first positioning groove, and the other end of the positioning block is embedded into the second positioning groove; and the other end of the positioning block is embedded into the second positioning groove, and a fastening screw penetrates through the first screw hole and the second screw hole, so that the positioning block is fixed on the upper partition plate. In the using process, the upper partition plate and the positioning blocks are fixed through the fastening bolts, the upper partition plate and the upper machine shell are fixed through the positioning blocks embedded into the second positioning grooves, and therefore fixing between the upper partition plate and the upper machine shell is achieved. According to the technical scheme, the fixing scheme of the positioning blocks and the fastening bolts replaces the fixing scheme of independently using screws, and the positioning problem of the upper partition plate after the unit is large-sized is solved.

Description

Technical Field

[0001] This application relates to the field of fluid machinery technology, and in particular to a centrifugal compressor positioning key and a centrifugal compressor. Background Technology

[0002] Centrifugal compressors are important, technology-intensive general-purpose equipment that play a crucial role in industries vital to national security and people's livelihoods, such as petrochemicals, defense, and pharmaceuticals. With the nation's increasing demand for higher-quality productivity, superior and advanced technologies need to be applied to compressor design and manufacturing.

[0003] As centrifugal compressor units become larger, the weight of centrifugal compressor components continues to increase. This leads to problems with the vertical positioning method of the upper partition and upper casing of the stator components in traditional horizontally split centrifugal compressors, where the strength of the locating key material exceeds the limits. The traditional method of vertically positioning the upper casing and upper partition of a centrifugal compressor involves fixing them to the upper casing with screws, with the protruding part of the screw head bearing the weight of the upper partition. Because the contact area between the screw head and the partition is limited, and the number of screws is restricted by the partition structure, the traditional structure can no longer meet design requirements as the unit becomes larger and the partition weight reaches a certain level. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the first aspect of this utility model provides a positioning key for a centrifugal compressor.

[0006] A second aspect of this invention provides a centrifugal compressor.

[0007] In view of this, a centrifugal compressor positioning key is provided according to a first aspect of the embodiments of this application, comprising:

[0008] The first positioning groove is formed on the outer side wall of the upper partition of the centrifugal compressor;

[0009] The second positioning groove is formed on the inner side wall of the upper casing of the centrifugal compressor;

[0010] The first positioning groove and the second positioning groove are connected and together form a cavity;

[0011] A positioning block, one end of which is connected to the upper housing through the second positioning groove, and the other end of which is connected to the upper partition through the first positioning groove;

[0012] The first screw hole is formed at the location where the first positioning groove is formed on the upper partition plate;

[0013] The second screw hole is formed in the positioning block, and the positions of the first screw hole and the second screw hole are corresponding.

[0014] A fastening bolt, which passes through the first screw hole and the second screw hole.

[0015] In one feasible implementation, the first positioning groove is symmetrically arranged on both sides of the bottom surface of the upper partition plate;

[0016] The second positioning groove is symmetrically arranged on the inner side wall of the upper housing, and is not arranged on the bottom surface of the upper housing;

[0017] The height of the first positioning groove is greater than that of the second positioning groove. After the upper partition is spliced ​​with the upper housing, the top surface of the first positioning groove and the top surface of the second positioning groove are on the same plane.

[0018] In one feasible implementation, the width of the positioning block is the same as the width of the first positioning groove;

[0019] In one feasible implementation, after the upper partition and the upper housing are assembled, the positioning block is pushed into the first positioning groove along the height of the first positioning groove, and then moves to the side where the second positioning groove is provided, so that one end of the positioning block is embedded in the second positioning groove.

[0020] In one possible implementation, each of the positioning blocks is fixedly connected to two of the fastening bolts.

[0021] In one feasible implementation, the two fastening bolts are arranged radially along the upper partition.

[0022] In one feasible implementation, it further includes:

[0023] A wedge clamping element is disposed between the positioning block and the upper partition plate.

[0024] In one feasible implementation, the wedge includes:

[0025] The fastening end, after one end of the positioning block is embedded in the second positioning groove, leaves a gap in the first positioning groove, and the width of the fastening end is the same as the width of the gap;

[0026] The wedge end is connected to one end of the fastening end. The width of the wedge end connected to the fastening end is the same as that of the fastening end, and the width of the wedge end away from the fastening end is smaller than that of the fastening end.

[0027] In one feasible implementation, the wedge further includes:

[0028] The handle consists of a horizontal bar and a short vertical bar. One end of the short vertical bar is fixed to the center of the horizontal bar, and the other end of the short vertical bar is fixedly connected to the fastening end.

[0029] A centrifugal compressor is provided according to a second aspect of the embodiments of this application, comprising:

[0030] Compressor body;

[0031] The upper partition has an outer wall and a bottom surface with an airflow channel.

[0032] The upper housing is covered by the upper partition, and the outer side wall of the upper partition is adjacent to the inner side wall of the upper housing.

[0033] Positioning keys for any of the items mentioned above.

[0034] Compared with the prior art, the present invention has at least the following beneficial effects: In this technical solution, a first positioning groove is opened in the upper partition and a second positioning groove is opened in the upper housing. After the upper partition and the upper housing are assembled, the first positioning groove and the second positioning groove are connected. One end of the positioning block is embedded in the first positioning groove and the other end of the positioning block is embedded in the second positioning groove. The fastening screw is passed through the first screw hole and the second screw hole, that is, the positioning block is fixed to the upper partition.

[0035] During use, the upper partition and the positioning block are fixed by fastening bolts, and the upper partition and the upper housing are fixed by the positioning block embedded in the second positioning groove, thereby achieving the fixation between the upper partition and the upper housing.

[0036] In this technical solution, the fixing method using positioning blocks and fastening bolts replaces the method of fixing with screws alone, thus solving the positioning problem of the upper partition after the unit is enlarged.

[0037] The size, weight, and strength of the positioning block can be customized according to the weight of the partition. When the strength requirement of the positioning block material is low, the thickness of the positioning block can be adjusted so that the shear resistance of the positioning block can support the weight of the upper partition.

[0038] The positioning block does not require machining with the upper partition and upper housing of the centrifugal compressor, reducing machining steps and improving machining efficiency. Attached Figure Description

[0039] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0040] Figure 1A cross-sectional structural block diagram of a centrifugal compressor positioning key according to an embodiment of this application;

[0041] Figure 2 An enlarged cross-sectional view of the positioning key of a centrifugal compressor according to an embodiment of this application;

[0042] Figure 3 An enlarged bottom view of the positioning key of a centrifugal compressor according to an embodiment of this application;

[0043] Figure 4 This is a cross-sectional structural block diagram of a centrifugal compressor in the prior art that is positioned by fastening bolts;

[0044] Figure 5 This is a bottom view of the structure of a centrifugal compressor in the prior art, which is positioned by fastening bolts.

[0045] in, Figure 1-5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0046] 110. Upper partition plate; 120. Upper housing; 130. First positioning groove; 140. Second positioning groove; 150. Positioning block; 160. Fastening bolt. Detailed Implementation

[0047] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0048] like Figure 1-3 As shown, a centrifugal compressor positioning key is provided according to a first aspect of the present application, comprising: a first positioning groove 130, which is formed on the outer side wall of the upper partition 110 of the centrifugal compressor; a second positioning groove 140, which is formed on the inner side wall of the upper housing 120 of the centrifugal compressor, and is not provided on the bottom surface of the upper housing 120; the first positioning groove 130 and the second positioning groove 140 are connected and together form a cavity; a positioning block 150, one end of which is connected to the upper housing 120 through the second positioning groove 140, and the other end of which is connected to the upper partition 110 through the first positioning groove 130; a first screw hole, which is formed at the location where the first positioning groove 130 is formed on the upper partition 110; a second screw hole, which is formed on the positioning block 150, and the positions of the first screw hole and the second screw hole correspond to each other; and a fastening bolt 160, which passes through the first screw hole and the second screw hole.

[0049] The centrifugal compressor positioning key provided in this application embodiment includes a first positioning groove 130, a second positioning groove 140, a positioning block 150, a first screw hole, and a second screw hole.

[0050] like Figure 4-5 As shown, the centrifugal compressor has an upper partition 110 and an upper housing 120, with the upper housing 120 covering the upper partition 110. As centrifugal compressor units develop towards larger sizes, the weight of centrifugal compressor components continues to increase, and the weight and size of the upper partition 110 and the upper housing 120 also continue to increase. The existing method of fixing the upper partition 110 and the upper housing 120 is to symmetrically arrange fastening bolts 160 on both sides of the upper partition 110 and the upper housing 120, with the fastening bolts 160 arranged in a direction parallel to the center line of the upper partition 110. The disadvantage of this fixing method is that only the protruding part of the screw head bears the weight of the upper partition 110. Since the contact area between the screw head and the partition is limited, and the number of screws is limited by the partition structure, after the unit becomes larger, the upper partition 110 reaches a corresponding weight, and the existing fixing method can no longer meet the usage requirements.

[0051] In this technical solution, a first positioning groove 130 is provided in the upper partition 110, and a second positioning groove 140 is provided in the upper housing 120. After the upper partition 110 and the upper housing 120 are assembled, the first positioning groove 130 and the second positioning groove 140 are connected. One end of the positioning block 150 is embedded in the first positioning groove 130, and the other end of the positioning block 150 is embedded in the second positioning groove 140. The fastening screw is passed through the first screw hole and the second screw hole, that is, the positioning block 150 is fixed to the upper partition 110.

[0052] During use, the upper partition 110 and the positioning block 150 are fixed by fastening bolts 160, and the upper partition 110 and the upper housing 120 are fixed by the positioning block 150 embedded in the second positioning groove 140, thereby achieving the fixation between the upper partition 110 and the upper housing 120.

[0053] In this technical solution, the positioning problem of the upper partition 110 after the unit is enlarged is solved by using a fixing scheme of positioning block 150 and fastening bolt 160 instead of fixing with screws alone.

[0054] The size, weight and strength of the positioning block 150 can be customized according to the weight of the partition. When the material strength requirement of the positioning block 150 is low, the thickness of the positioning block 150 can be adjusted so that the shear resistance of the positioning block 150 can support the weight of the upper partition 110.

[0055] The positioning block 150 does not require machining with the upper partition 110 and upper housing 120 of the centrifugal compressor, which reduces machining steps and improves machining efficiency.

[0056] like Figure 1-3 As shown, the first positioning groove 130 is symmetrically arranged on both sides of the bottom surface of the upper partition 110; the second positioning groove 140 is symmetrically arranged on the inner side wall of the upper housing 120, and is not arranged on the bottom surface of the upper housing 120; the height of the first positioning groove 130 is greater than that of the second positioning groove 140, and after the upper partition 110 and the upper housing 120 are spliced, the top surface of the first positioning groove 130 and the top surface of the second positioning groove 140 are on the same plane.

[0057] In this technical solution, in order to ensure that the supporting force on the upper partition 110 is uniform, the first positioning groove 130 needs to be symmetrically arranged along the center line of the upper partition 110, and the first positioning groove 130 is located at the intersection of the outer side wall and the bottom surface of the upper partition 110, so that the positioning block 150 can enter from the first positioning groove 130.

[0058] In this technical solution, the position and number of the second positioning groove 140 correspond to the first positioning groove 130, and the second positioning groove 140 is set on the inner side wall of the upper housing 120, thereby realizing the communication between the first positioning groove 130 and the second positioning groove 140. At the same time, the second positioning groove 140 is not set on the bottom surface of the upper housing 120, that is, the bottom surface of the second positioning groove 140 is a certain distance from the bottom surface of the upper housing 120. That is, when one end of the positioning block 150 is embedded in the second positioning groove 140, the lower side of the second positioning groove 140 still has the structure of the upper housing 120, which can realize the locking of the positioning block 150.

[0059] It is understandable that the simplest structure of the positioning block 150 is a square metal block structure. To ensure the stability of the positioning block 150 after assembly, the top surfaces of the first positioning groove 130 and the second positioning groove 140 should be kept on the same plane after assembly to ensure that they fit against the top surface of the positioning block 150.

[0060] Understandably, the bottom surface of the first positioning groove 130 coincides with the bottom surface of the upper partition 110, and the bottom surface of the first positioning groove 130 is open. Furthermore, the bottom surface of the second positioning groove 140 is a certain distance from the bottom surface of the upper housing 120. Since the top surfaces of the first positioning groove 130 and the second positioning groove 140 are on the same plane after assembly, the height of the first positioning groove 130 is naturally greater than the height of the second positioning groove 140. After assembly, the cavity formed by the first positioning groove 130 and the second positioning groove 140 is an inverted "L" shape.

[0061] like Figure 1-3 As shown, the width of the positioning block 150 is the same as the width of the first positioning groove 130; the height of the positioning block 150 is the same as the height of the second positioning groove 140.

[0062] like Figure 1-3 As shown, after the upper partition 110 and the upper housing 120 are assembled, the positioning block 150 is pushed into the first positioning groove 130 along the height direction of the first positioning groove 130, and then moves to the side where the second positioning groove 140 is provided, so that one end of the positioning block 150 is embedded in the second positioning groove 140.

[0063] In the actual assembly process, the upper housing 120 of the centrifugal compressor is first hoisted, and then the upper partition 110 is installed into the upper housing 120. At this time, the first positioning groove 130 and the second positioning groove 140 form an inverted "L" shape. The positioning block 150 is pushed into the bottom of the first positioning groove 130 from the open bottom surface of the first positioning groove 130, and then pushed towards the side where the second positioning groove 140 is provided, so that one end of the positioning block 150 slides into the second positioning groove 140, thereby locking the upper partition 110 by the positioning block 150, and initially fixing the upper partition 110. Then, the fastening bolt 160 passes through the upper partition 110 and the positioning block 150 to further fix the upper partition 110.

[0064] To ensure positioning stability, the positioning block 150 should fill the first positioning groove 130 and the second positioning groove 140 as much as possible. Then, it should be designed according to the usage requirements. Thus, it can be understood that the design height of the positioning block 150 is the same as the width of the first positioning groove 130, and the design height of the positioning block 150 is the same as the height of the second positioning groove 140.

[0065] like Figure 1-3 As shown, each of the positioning blocks 150 is fixedly connected to two of the fastening bolts 160.

[0066] In this technical solution, to further enhance the stability of the connection between the positioning block 150 and the upper partition plate 110, each positioning block 150 is fixed by two fastening bolts 160.

[0067] like Figure 1-3 As shown, the two fastening bolts 160 are arranged radially along the upper partition 110.

[0068] In this technical solution, if it is necessary to enhance the axial positioning stability of the upper partition 110, it is only necessary to reduce the spacing of the first positioning grooves 130 on one side. If it is necessary to enhance the axial positioning stability of the upper partition 110, it is necessary to widen the width of the first positioning grooves 130 in the radial direction of the upper partition 110 according to the design requirements. Therefore, it can be understood that the width of the first positioning grooves 130 in the radial direction of the upper partition 110 is usually greater than the width of the upper partition 110 in the axial direction. Therefore, the two fastening bolts 160 should be arranged in the wider radial direction of the upper partition 110.

[0069] like Figure 1-3As shown, the centrifugal compressor positioning key also includes a wedge, which is disposed between the positioning block and the upper partition 110.

[0070] In this technical solution, the positioning key also includes a wedge. It is understood that after the positioning block 150 is pushed from the first positioning groove 130 into the second positioning groove 140, a gap will be left in the first positioning groove 130. This gap will reduce the strength of the positioning key. Therefore, after the positioning block 150 is assembled in the first positioning groove 130, a wedge is set in the gap to further increase the stability of the positioning.

[0071] like Figure 1-3 As shown, the wedge includes: a fastening end, where one end of the positioning block 150 is embedded in the second positioning groove 140, and a gap is left in the first positioning groove 130, the width of the fastening end being the same as the width of the gap; and a wedge end, one end of the wedge end being connected to one end of the fastening end, the width of the wedge end connected to the fastening end being the same as the fastening end, and the width of the wedge end away from the fastening end being smaller than the fastening end.

[0072] In this technical solution, the wedge includes a fastening end and a wedge-in end. The width of the fastening end is the same as the width of the gap left after the positioning block 150 is assembled in the first positioning groove 130. The width of one end of the wedge-in end is the same as the width of the fastening end, and the width of the other end of the wedge-in end is smaller than the width of the fastening end.

[0073] In actual use, the positioning block 150 is assembled first, and then the fastening end is wedged into the gap left by the first positioning groove 130 through the wedged end.

[0074] This setup allows for easier insertion of the wedge into the gap by using a wedge end with a width smaller than the gap itself. The fastening end, with a width equal to the gap width, can abut against the positioning block 150 on one side and against the upper partition 110 on the other side, thereby increasing the stability of the positioning block 150.

[0075] like Figure 1-3 As shown, the wedge clamping member further includes a handle, which is composed of a horizontal bar and a short vertical bar. One end of the short vertical bar is fixed to the center of the horizontal bar, and the other end of the short vertical bar is fixedly connected to the fastening end.

[0076] In this technical solution, the wedge clamping component also includes a handle. When it is necessary to disassemble and repair the centrifugal compressor, the wedge clamping block can be pulled out by the handle, thereby making the positioning block 150 detachable. To ensure the strength of the wedge clamping component, the handle, the fixed end, and the wedge insertion end are integrally cast.

[0077] like Figure 1-3As shown, the centrifugal compressor includes: a compressor body; an upper partition 110, the upper housing 120 having an outer side wall and a bottom surface with an airflow channel; an upper housing 120 covering the upper partition 110, the outer side wall of the upper partition 110 being adjacent to the inner side wall of the upper housing 120; and a positioning key as described in any of the above.

[0078] The centrifugal compressor includes a compressor body, an upper partition 110, and an upper casing 120.

[0079] The upper partition 110 and the upper housing 120 are assembled using positioning keys.

[0080] The first positioning groove 130 is formed on the upper partition 110, and the second positioning groove 140 is formed on the upper housing 120.

[0081] like Figure 3 As shown, the upper partition 110 has a raised strip, and the upper housing 120 has an embedded groove. When the upper partition 110 and the upper housing 120 are assembled, the raised strip of the upper partition 110 needs to be embedded in the embedded groove of the upper housing 120. The upper partition 110 and the upper housing 120 are initially positioned by the raised strip and the embedded groove.

[0082] The first positioning groove 130 is formed on the protruding strip, and the second positioning groove 140 is formed on the embedded groove.

[0083] In this utility model, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "join," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "join" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0084] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or unit referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0085] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A positioning key for a centrifugal compressor, characterized in that, include: The first positioning groove is formed on the outer side wall of the upper partition of the centrifugal compressor; The second positioning groove is formed on the inner side wall of the upper casing of the centrifugal compressor and is not located on the bottom surface of the upper casing. The first positioning groove and the second positioning groove are connected and together form a cavity; A positioning block, one end of which is connected to the upper housing through the second positioning groove, and the other end of which is connected to the upper partition through the first positioning groove; The first screw hole is formed at the location where the first positioning groove is formed on the upper partition plate; The second screw hole is formed in the positioning block, and the positions of the first screw hole and the second screw hole are corresponding. A fastening bolt, which passes through the first screw hole and the second screw hole.

2. The centrifugal compressor positioning key according to claim 1, characterized in that: The first positioning groove is symmetrically arranged on both sides of the bottom surface of the upper partition plate; The second positioning groove is symmetrically arranged on the inner side wall of the upper housing, and is not arranged on the bottom surface of the upper housing; The height of the first positioning groove is greater than that of the second positioning groove. After the upper partition is spliced ​​with the upper housing, the top surface of the first positioning groove and the top surface of the second positioning groove are on the same plane.

3. The centrifugal compressor positioning key according to claim 2, characterized in that: The width of the positioning block is the same as the width of the first positioning groove; The height of the positioning block is the same as the height of the second positioning groove.

4. The centrifugal compressor positioning key according to claim 3, characterized in that: After the upper partition and the upper housing are assembled, the positioning block is pushed into the first positioning groove along the height of the first positioning groove, and then moves to the side where the second positioning groove is provided, so that one end of the positioning block is embedded in the second positioning groove.

5. The centrifugal compressor positioning key according to claim 1, characterized in that: Each of the positioning blocks is fixedly connected to two of the fastening bolts.

6. The centrifugal compressor positioning key according to claim 5, characterized in that: The two fastening bolts are arranged radially along the upper partition.

7. The centrifugal compressor positioning key according to claim 4, characterized in that, Also includes: A wedge clamping element is disposed between the positioning block and the upper partition plate.

8. The centrifugal compressor positioning key according to claim 7, characterized in that, The wedge-tightening element includes: The fastening end, after one end of the positioning block is embedded in the second positioning groove, leaves a gap in the first positioning groove, and the width of the fastening end is the same as the width of the gap; The wedge end is connected to one end of the fastening end. The width of the wedge end connected to the fastening end is the same as that of the fastening end, and the width of the wedge end away from the fastening end is smaller than that of the fastening end.

9. The centrifugal compressor positioning key according to claim 8, characterized in that, The wedge-tightening element further includes: The handle consists of a horizontal bar and a short vertical bar. One end of the short vertical bar is fixed to the center of the horizontal bar, and the other end of the short vertical bar is fixedly connected to the fastening end.

10. A centrifugal compressor, characterized in that, include: Compressor body; The upper partition has an outer wall and a bottom surface with an airflow channel. The upper housing is covered by the upper partition, and the outer side wall of the upper partition is adjacent to the inner side wall of the upper housing. The positioning key as described in any one of claims 1-9.

Images