CN220319912U - Assembled spiral case of centrifugal compressor - Google Patents
Assembled spiral case of centrifugal compressor Download PDFInfo
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- CN220319912U CN220319912U CN202322009743.2U CN202322009743U CN220319912U CN 220319912 U CN220319912 U CN 220319912U CN 202322009743 U CN202322009743 U CN 202322009743U CN 220319912 U CN220319912 U CN 220319912U
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- 238000000034 method Methods 0.000 abstract description 8
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses an assembled volute of a centrifugal compressor, which belongs to the technical field of centrifugal compressors and comprises a volute body, wherein the volute body is provided with a connecting surface, and the connecting surface is provided with a plurality of first threaded holes; the flange is provided with a plurality of long round through holes distributed circumferentially, and the length direction of the long round through holes is set to be the circumferential direction of the flange; a first connecting screw is arranged in the oblong through hole, and can penetrate through the oblong through hole and be in threaded connection with the first threaded hole; the gear box is fixedly connected with the flange; according to the utility model, the long round through hole on the disc surface of the flange and the first threaded hole on the connecting surface of the volute body are utilized, the relative position of the volute body and the flange can be adjusted according to actual needs in the assembly process, and the volute body and the flange are fixedly connected through the first connecting screw, so that the assembly efficiency is greatly improved while the stability is ensured, the structure is simple, and the use is convenient.
Description
Technical Field
The utility model relates to the technical field of centrifugal compressors, in particular to an assembled volute of a centrifugal compressor.
Background
The centrifugal compressor is a vane rotary compressor. The volute is one of the key components of a centrifugal compressor, and the volute can convert the dynamic pressure of the gas at the impeller or diffuser outlet into static pressure.
At present, most of connection modes of the volute and the gear box adopt an integral casting mode, and during later maintenance, the volute and the gear box can only be replaced integrally, so that material waste can be caused, and the cost is increased; the spiral case is connected with the gear box in a split mode, namely the side face of the spiral case is connected with the side face of the gear box through a flange, the relative positions of the spiral case and the gear box cannot be adjusted in real time according to actual needs in the assembly process, and certain inconvenience exists in the practical application process.
Therefore, designing a centrifugal compressor assembled volute that can conveniently adjust the assembly position of the volute and the flange, and ensure the assembly efficiency and the stability is a problem to be solved in the present stage.
Disclosure of Invention
The utility model provides a centrifugal compressor assembled volute, which solves the problems existing in the prior art, and the relative position of the volute body and the flange can be adjusted according to actual needs in the assembly process by utilizing a long round through hole on the disc surface of the flange and a first threaded hole on the connecting surface of the volute body, and the volute is fixedly connected through a first connecting screw, so that the assembly efficiency is greatly improved while the stability is ensured, and the centrifugal compressor assembled volute is simple in structure and convenient to use.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides an assembled volute of a centrifugal compressor, which comprises the following components:
the volute comprises a volute body, wherein a connecting surface is arranged on the volute body, and a plurality of first threaded holes are formed in the connecting surface;
the flange is characterized in that a plurality of long round through holes distributed in the circumferential direction are formed in the disc surface of the flange, and the length direction of each long round through hole is set to be the circumferential direction of the flange; a first connecting screw is arranged in the long round through hole, and can penetrate through the long round through hole and be in threaded connection with the first threaded hole;
the gear box is fixedly connected with the flange.
As a preferable technical scheme, a plurality of connecting through holes distributed in the circumferential direction are formed in the disc surface of the flange, and second connecting screws are arranged in the connecting through holes; the gear box is provided with a second threaded hole at the position corresponding to the connecting through hole, and the second connecting screw can penetrate through the connecting through hole and be in threaded connection with the second threaded hole.
As a preferable technical scheme, the connecting through hole is positioned at the outer side of the long round through hole;
and/or two taper pin threaded holes are formed in the flange, and the connecting through hole is positioned between the two taper pin threaded holes; a tail taper pin is arranged in the taper pin threaded hole;
and/or the plurality of connecting through holes are uniformly distributed along the circumferential direction.
As a preferable technical scheme, when the flange is fixedly connected with the volute body, a gap is formed between the part of the flange provided with the connecting through hole and the connecting surface.
As a preferable technical scheme, the connecting surface is thickened; the first threaded hole is set to be a blind hole.
As a preferred embodiment, the flange is a semicircular open flange.
As a preferable technical scheme, the volute body is provided with a gas outlet; the cross section of the opening part of the semicircular opening flange is horizontally arranged.
As a preferable technical scheme, the radian of the long round through hole is set to be 6-12 degrees;
and/or, the long round through hole is set as a counter bore;
and/or, the long round through holes are uniformly distributed along the circumferential direction.
As a preferable technical scheme, an alignment key groove is arranged on the disk surface of the flange facing the gear box; and an alignment key is arranged at the position of the gear box corresponding to the alignment key groove.
As a preferable technical scheme, a fixed key slot is arranged on the disk surface of the flange facing the volute body; and a fixed key is arranged at the position of the connecting surface corresponding to the fixed key groove.
The beneficial effects of the utility model are as follows:
1. according to the utility model, the long round through hole on the disc surface of the flange and the first threaded hole on the connecting surface of the volute body are utilized, the relative position of the volute body and the flange can be adjusted according to actual needs in the assembly process, and the volute body and the flange are fixedly connected through the first connecting screw, so that the assembly efficiency is greatly improved while the stability is ensured, the structure is simple, and the use is convenient.
2. The volute body and the gear box are connected through the flange, so that the split disassembly and assembly of the volute body and the gear box can be realized, convenience is increased in the maintenance process compared with the volute body and the gear box which are integrally cast, parts can be maintained and replaced according to requirements, the whole volute body and the gear box are not required to be replaced, and the maintenance cost is reduced.
3. The utility model only carries out thickening treatment on the connecting surface, which not only reduces the use of materials, but also increases the strength of the connecting surface.
4. The gap is formed between the part, provided with the connecting through hole, of the flange and the connecting surface, so that the second connecting screw can be conveniently screwed up through the gap, the flange is fixedly connected with the gear box, and the assembly efficiency is improved.
5. The utility model utilizes the matched alignment key groove and alignment key as well as the fixed key groove and the fixed key, can conveniently and rapidly realize the positioning of the flange and the gear box as well as the positioning of the flange and the volute body, and improves the assembly efficiency.
Drawings
FIG. 1 is a schematic view of the overall structure of an embodiment of an assembled scroll casing for a centrifugal compressor in accordance with the present utility model;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
FIG. 3 is a cross-sectional view taken along the direction B-B in FIG. 1;
FIG. 4 is a schematic view of the structure of the volute body of FIG. 1;
FIG. 5 is a schematic view of the flange of FIG. 1;
FIG. 6 is a cross-sectional view taken along the direction C-C in FIG. 5;
fig. 7 is a schematic view of the other side of fig. 5.
In the figure: the spiral case comprises a 1-spiral case body, an 11-connection surface, a 12-first threaded hole, a 13-gas outlet, a 14-fixed key, a 2-flange, a 21-long round through hole, a 22-first connection screw, a 23-connection through hole, a 24-second connection screw, a 25-alignment key slot, a 26-fixed key slot, a 27-taper pin threaded hole, a 3-gear box, a 31-second threaded hole and a 32-alignment key.
Detailed Description
The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Referring to fig. 1-7, an embodiment of an assembled volute of a centrifugal compressor according to the present utility model includes: the volute comprises a volute body 1, wherein a side surface of one side of the volute body 1 is provided with a connecting surface 11, and the connecting surface 11 is provided with a plurality of first threaded holes 12 distributed circumferentially; the flange 2 is fixedly connected with the volute body 1 through the connecting surface 11, a long round through hole 21 is arranged on the disk surface of the flange 2 at a position corresponding to the first threaded hole 12, and a first connecting screw 22 can penetrate through the long round through hole 21 and then be in threaded connection with the first threaded hole 12 to fix the flange 2 on the volute body 1; the length direction of the long round through hole 21 extends along the circumferential direction of the flange 2, and after the flange 2 is rotated by a small extent, the first connecting screw 22 can still be connected with the first threaded hole 12 through the long round through hole 21 in a threaded manner, so that the relative position of the volute body 1 and the flange 2 can be conveniently adjusted; the gear box 3 is fixedly connected with the other disc surface of the flange 2; the connection of the volute body 1 to the gearbox 3 can be achieved by means of the flange 2.
The circumferential direction and the axial direction are taken the axis of the flange 2 as the reference; meanwhile, in order to more intuitively show the connection structure of the flange 2 with the scroll body 1 and the gear case 3, respectively, fig. 1 to 3 show only a part of the actual gear case 3.
In this embodiment, referring to fig. 1, 3, 5 and 7, a plurality of connection through holes 23 distributed circumferentially are further provided on the disc surface of the flange 2, and second connection screws 24 are provided in the connection through holes 23; correspondingly, a second threaded hole 31 is arranged at the position of the gear box 3 corresponding to the connecting through hole 23, and the second connecting screw 24 can penetrate through the connecting through hole 23 and then be in threaded connection with the second threaded hole 31, so that the gear box 3 is fixed on the flange 2.
On the basis of the foregoing embodiments, referring to fig. 2, 3 and 6, when the flange 2 is fixedly connected to the volute body 1, a gap is formed between the portion of the flange 2 provided with the connection hole 23 and the connection surface 11, so that the second connection screw 24 can be conveniently installed through the gap; specifically, the cross-section of flange 2 is preferably L shape, and connecting hole 23 locates the region that flange 2 thickness is thinner, and simultaneously, connecting hole 23 is located the outside of long circle through-hole 21, and long circle through-hole 21 is located the inlayer of flange 2 promptly, and connecting hole 23 is located the skin of flange 2, after fixing flange 2 on spiral case body 1, can pass through the clearance between flange 2 and the junction surface 11 to screw up the mode of second connecting screw 24, convenient and fast with gear box 3 and flange 2 fixed connection.
Further, referring to fig. 5, two taper pin threaded holes 27 are provided on the surface of the flange 2 abutting against the gear case 3; the connecting through hole 23 is positioned between the two taper pin threaded holes 27; the taper pin threaded hole 27 is internally provided with a screw tail taper pin, the position of the gear box 3 corresponding to the taper pin threaded hole 27 is provided with a matched connecting hole, and the relative positions of the gear box 3 and the flange 2 in the circumferential direction and the axial direction can be rapidly positioned through the screw tail taper pin.
In this embodiment, referring to fig. 1, 5 and 7, the plurality of connecting through holes 23 and the plurality of oblong through holes 21 are uniformly distributed along the circumferential direction, so as to improve the connection stability between the gear case 3 and the volute body 1 and the flange 2.
It should be noted that the connection surface 11 should be thickened; the thickness of the connecting surface 11 is greater than the depth of the first threaded hole 12, so that the first threaded hole 12 becomes a blind hole; at the same time, only thickening the joint face 11 can reduce the use of materials while enhancing the strength of the joint face 11.
In this embodiment, referring to fig. 1, 3, 5 and 7, the flange 2 is a semicircular open flange, which is more convenient to install and detach on the premise of ensuring connection stability; further, the volute body 1 is provided with a gas outlet 13; in actual use, when the gas outlet 13 is arranged in the horizontal direction, the cross section of the opening of the semicircular opening flange is parallel to the semicircular opening flange; when the gas outlet 13 is arranged in the vertical direction, the cross section of the opening of the semicircular opening flange is vertical to the semicircular opening flange; when the included angle between the gas outlet 13 and the horizontal plane is 45 degrees, the included angle between the section of the opening of the semicircular opening flange and the opening of the semicircular opening flange is 45 degrees; i.e. the cross section at the opening of the semicircular opening flange is preferably arranged horizontally or nearly horizontally.
The radian of the oblong through hole 21 is set to 6-12 degrees; preferably, the radian of the long round through hole 21 is set to be 9 degrees, namely the flange 2 can rotate within the range of 9 degrees relative to the volute body 1, so that the relative position of the volute body 1 and the flange 2 is adjusted; further, the long round through hole 21 is a counter bore, so that the head of the first connecting screw 22 can be embedded into the flange 2, and the head of the first connecting screw 22 is ensured not to interfere or influence the installation of the gear box 3 and the flange 2.
In this embodiment, referring to fig. 1, 3 and 5, an alignment key groove 25 is provided on a disk surface of the flange 2 facing the gear case 3; the position of the gear box 3 corresponding to the alignment key groove 25 is provided with an alignment key 32, so that the alignment and positioning can be quickly performed in the assembly process of the flange 2 and the gear box 3; specifically, the alignment key 32 may be fixed to the gear case 3 by bolting or interference.
In this embodiment, referring to fig. 3, 4, 5 and 7, a fixing key slot 26 is provided on the disk surface of the flange 2 facing the volute body 1; the fixed key 14 is arranged on the connecting surface 11 at the position corresponding to the fixed key groove 26, so that the flange 2 and the volute body 1 can be quickly aligned and positioned in the assembly process; specifically, the fixing key slots 26 are arranged between the adjacent long round through holes 21, and the number of the fixing key slots 26 can be flexibly selected according to the actual situation of assembly, so as to ensure quick alignment and positioning between the flange 2 and the volute body 1 and stable connection.
The concrete assembly mode of the utility model is as follows:
the flange 2 is placed at the connecting surface 11 of the volute body 1 and is aligned and positioned rapidly through the matched fixed key 14 and the fixed key groove 26; rotating the flange 2 in a small amplitude, and adjusting the flange 2 and the volute body 1 to a proper relative position; the first connecting screw 22 penetrates through the long round through hole 21 and is screwed into the first threaded hole 12, so that the flange 2 is fixedly connected with the volute body 1;
the gear box 3 is abutted with the other disc surface of the flange 2, and is aligned and positioned rapidly through the aligned key 32 and the aligned key groove 25 which are matched; the second connecting screw 24 passes through the connecting through hole 23 and is screwed into the second threaded hole 31, so that the flange 2 and the gear box 3 are fixedly connected.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. An assembled scroll of a centrifugal compressor, comprising:
the spiral case body (1), the spiral case body (1) is provided with a connecting surface (11), and the connecting surface (11) is provided with a plurality of first threaded holes (12);
the flange (2), a plurality of long round through holes (21) distributed circumferentially are formed in the disc surface of the flange (2), and the length direction of each long round through hole (21) is set to be the circumferential direction of the flange (2); a first connecting screw (22) is arranged in the oblong through hole (21), and the first connecting screw (22) can penetrate through the oblong through hole (21) and is in threaded connection with the first threaded hole (12);
the gear box (3), gear box (3) with flange (2) fixed connection.
2. The centrifugal compressor assembly type volute of claim 1, wherein a plurality of connecting through holes (23) distributed circumferentially are formed in the disc surface of the flange (2), and second connecting screws (24) are arranged in the connecting through holes (23); the gear box (3) is provided with a second threaded hole (31) at a position corresponding to the connecting through hole (23), and the second connecting screw (24) can penetrate through the connecting through hole (23) and be in threaded connection with the second threaded hole (31).
3. A centrifugal compressor-assembled scroll according to claim 2, wherein the connecting through-hole (23) is located outside the oblong through-hole (21);
and/or, two taper pin threaded holes (27) are formed in the flange (2), and the connecting through hole (23) is positioned between the two taper pin threaded holes (27); a tail taper pin is arranged in the taper pin threaded hole (27);
and/or the plurality of connecting through holes (23) are uniformly distributed along the circumferential direction.
4. A centrifugal compressor-assembled scroll according to claim 2, wherein when the flange (2) is fixedly connected to the scroll body (1), a gap is provided between the portion of the flange (2) provided with the connection through hole (23) and the connection surface (11).
5. A centrifugal compressor-assembled scroll according to claim 1, wherein the connection surface (11) is thickened; the first threaded hole (12) is provided as a blind hole.
6. A centrifugal compressor-assembled scroll according to claim 1, wherein the flange (2) is provided as a semicircular open flange.
7. A centrifugal compressor-assembled scroll as claimed in claim 6, wherein the scroll body (1) has a gas outlet (13); the cross section of the opening part of the semicircular opening flange is horizontally arranged.
8. A centrifugal compressor-assembled scroll according to claim 1, wherein the arc of the oblong through-hole (21) is set to 6-12 °;
and/or the long round through hole (21) is set as a counter bore;
and/or a plurality of oblong through holes (21) are uniformly distributed along the circumferential direction.
9. The centrifugal compressor assembly type volute according to claim 1, wherein an alignment key groove (25) is arranged on a disc surface of the flange (2) facing the gear box (3); and a position of the gear box (3) corresponding to the alignment key groove (25) is provided with an alignment key (32).
10. A centrifugal compressor assembly scroll according to claim 1, wherein the flange (2) is provided with a fixing key slot (26) on the disk surface facing the scroll body (1); and a fixed key (14) is arranged on the connecting surface (11) at a position corresponding to the fixed key groove (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322009743.2U CN220319912U (en) | 2023-07-28 | 2023-07-28 | Assembled spiral case of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322009743.2U CN220319912U (en) | 2023-07-28 | 2023-07-28 | Assembled spiral case of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220319912U true CN220319912U (en) | 2024-01-09 |
Family
ID=89410766
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322009743.2U Active CN220319912U (en) | 2023-07-28 | 2023-07-28 | Assembled spiral case of centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220319912U (en) |
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2023
- 2023-07-28 CN CN202322009743.2U patent/CN220319912U/en active Active
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