CN218030761U - Notch cuttype bearing box structure of centrifugal compressor - Google Patents
Notch cuttype bearing box structure of centrifugal compressor Download PDFInfo
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- CN218030761U CN218030761U CN202221851846.2U CN202221851846U CN218030761U CN 218030761 U CN218030761 U CN 218030761U CN 202221851846 U CN202221851846 U CN 202221851846U CN 218030761 U CN218030761 U CN 218030761U
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Abstract
The utility model discloses a notch cuttype bearing box structure of centrifugal compressor, including first notch cuttype bearing box and second notch cuttype bearing box, first notch cuttype bearing box includes first shaft coupling section, first vibration probe installation section and first bearing installation section that from the back to the front set up integratively in proper order; the lower semi-stepped bearing box body comprises a lower semi-coupling section, a lower semi-oil return section and a lower semi-bearing mounting section which are integrally arranged from back to front; the space in the upper half stepped bearing box body and the lower half stepped bearing box body is a bearing box cavity, and an oil return hole is formed in the lower half coupling section and communicated with the bearing box cavity. The utility model discloses a centrifugal compressor's notch cuttype bearing box structure can't stir oil at centrifugal compressor at the operation in-process shaft coupling ring flange for the oil return temperature of bearing box and the temperature of shaft coupling guard shield can not be too high, and then has guaranteed the even running of unit.
Description
Technical Field
The utility model belongs to the technical field of centrifugal compressor, a little model unipolar centrifugal compressor is related to, concretely relates to centrifugal compressor's notch cuttype bearing box structure.
Background
The single-shaft centrifugal compressor is a fluid flow machine, is widely applied to the fields of metallurgy, petrifaction, pharmacy and the like, has the characteristic of multistage and high-speed rotation, and is generally driven by a motor or a steam turbine. The driving end and the non-driving end of the single-shaft centrifugal compressor are respectively provided with a set of bearing bearings, the non-driving end can be provided with a set of thrust bearing besides the bearing bearings, the bearing bearings are used for supporting the rotor to ensure that the rotor can stably run at a high speed, and the thrust bearings are used for balancing the residual thrust of the rotor.
The bearing box of the single-shaft centrifugal compressor is a box body for mounting a supporting bearing, and aims to ensure the mounting precision of the bearing and a machine shell and provide guarantee for the smooth operation of a rotor. The small-sized single-shaft centrifugal compressor is limited by the structures of a machine shell, a rotor and a bearing, the size of a bearing box of the small-sized single-shaft centrifugal compressor is small, the structure is compact, the bearing box is influenced by transmitted power, and the excircle of a coupler of the small-sized single-shaft centrifugal compressor is larger, so that the clearance between the excircle of the coupler and the inner wall of the bearing box is smaller.
The bearing of cell-phone type unipolar centrifugal compressor generally takes force-feed lubrication's mode, let in lubricating oil through the oil gallery promptly and realize cooling and lubrication in the bearing box cavity, lubricating oil can be retained in the bottom of bearing box cavity, at compressor operation in-process, the shaft coupling moves along with the main shaft, the shaft coupling ring flange can stir bearing box cavity bottom and retain lubricating oil, do work to lubricating oil, make the interior oil temperature of bearing box rise, and then lead to the rising of shaft coupling guard shield temperature, produce the hidden danger for the unit operation.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide a centrifugal compressor's notch cuttype bearing box structure solves among the prior art because the drive end oil return temperature of small model unipolar centrifugal compressor and the high temperature of shaft coupling guard shield lead to the unit to take place operational failure's technical problem easily.
In order to solve the technical problem, the utility model discloses a following technical scheme realizes:
a ladder-shaped bearing box structure of a centrifugal compressor comprises an upper half ladder-shaped bearing box body and a lower half ladder-shaped bearing box body, wherein the upper half ladder-shaped bearing box body and the lower half ladder-shaped bearing box body are oppositely arranged and spliced together to form a shell of the ladder-shaped bearing box;
the upper half stepped bearing box body comprises an upper half coupling section, an upper half vibration measuring probe mounting section and an upper half bearing mounting section which are integrally arranged from back to front;
the lower semi-stepped bearing box body comprises a lower semi-coupling section, a lower semi-oil return section and a lower semi-bearing mounting section which are integrally arranged from back to front;
and an oil return hole is formed in the lower coupling half section and is communicated with the bearing box cavity.
The utility model discloses still have following technical characteristic:
the inner diameter of the upper half coupling section is larger than that of the upper half support bearing mounting section; the inner diameter of the upper half vibration measurement probe mounting section is gradually and uniformly reduced from back to front.
The inner wall of first test vibration probe installation section be 45 with the central axis's of trapezoidal bearing box casing contained angle, the inner wall of second oil return section be 45 with the central axis's of trapezoidal bearing box casing contained angle.
The inner wall of the lower half bearing mounting section is provided with a supporting bearing assembly;
the supporting bearing assembly comprises a supporting bearing ring on the inner wall of the supporting bearing mounting section, a supporting bearing body is coaxially arranged in the supporting bearing ring, and a plurality of adjusting blocks are arranged between the supporting bearing ring and the supporting bearing body; the axial front section of the main shaft is rotatably arranged in the supporting bearing body, and the axial rear section of the main shaft is provided with a coupler.
And a space is reserved between the upper half part of the supporting bearing ring and the inner wall of the upper half bearing mounting section, and the space is a smoke passing channel.
And a supporting bearing ring mounting clamping groove is formed in the inner wall of the lower half supporting bearing mounting section, and the lower half part of the supporting bearing ring is mounted in the supporting bearing ring mounting clamping groove.
The coupler comprises a coupler flange plate and a coupler mounting plate which are integrally arranged from back to front, and the coupler mounting plate is mounted outside the axial rear section of the main shaft.
An upper coupling shield clamping groove is formed in the inner wall of the rear end of the upper coupling half section in the axial direction; and the inner wall of the rear end of the lower half coupling section in the axial direction is provided with a lower coupling shield clamping groove.
The upper half stepped bearing box body and the lower half stepped bearing box body are of mirror symmetry structures.
The upper coupling half section and the lower coupling half section are of mirror symmetry structures; the upper half vibration measuring probe mounting section and the lower half oil return section are of mirror symmetry structures; the upper half supporting bearing mounting section and the lower half supporting bearing mounting section are of mirror symmetry structures.
Compared with the prior art, the utility model, following technological effect has:
(I) the utility model discloses a notch cuttype bearing box is the compact structure of syllogic, under the prerequisite that does not change bearing box and centrifugal compressor casing connection structure size, has increased the space between shaft coupling ring flange and the bearing box inner wall, makes the oil level of bearing box cavity bottom be less than the excircle of shaft coupling ring flange, and the bearing box oil gallery sets up in the half-coupling below, can reduce the oil level in the bearing box cavity.
(II) the utility model discloses a centrifugal compressor's notch cuttype bearing box structure through the aforesaid setting for centrifugal compressor is at the unable oil that stirs of operation in-process shaft coupling ring flange, makes the oil return temperature of bearing box and the temperature of shaft coupling guard shield can not be too high, and then has guaranteed the even running of unit.
(III) the utility model discloses a centrifugal compressor's notch cuttype bearing box structure, under the prerequisite that satisfies small-size centrifugal compressor casing structure size demand, can guarantee the installation accuracy of bearing simultaneously, avoid influencing the compressor operation because of processing, installation error that size effect leads to.
Drawings
Fig. 1 is a schematic view of the overall structure of a stepped bearing housing structure of a centrifugal compressor.
The meaning of the individual reference symbols in the figures is: 1-an upper half stepped bearing box body, 2-a lower half stepped bearing box body, 3-a bearing box cavity, 4-an oil return hole, 5-a support bearing assembly, 6-a main shaft, 7-a coupler, 8-a lampblack passage, 9-a support bearing ring installation clamping groove, 10-an upper coupler shield clamping groove, and 11-a lower coupler shield clamping groove;
101-an upper half coupling section, 102-an upper half vibration measuring probe mounting section and 103-an upper half bearing mounting section;
201-a lower half coupling section, 202-a lower half oil return section, 203-a lower half bearing mounting section;
501-supporting bearing ring, 502-supporting bearing body, 503-adjusting block;
701-a coupling flange plate and 702-a coupling mounting plate.
The following examples are provided to explain the present invention in further detail.
Detailed Description
It should be noted that all the components of the present invention are known in the art, and the components are not specifically described.
The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.
Example (b):
the stepped bearing box structure of the centrifugal compressor is provided in the embodiment, as shown in fig. 1, the stepped bearing box structure comprises an upper half stepped bearing box body 1 and a lower half stepped bearing box body 2, the upper half stepped bearing box body 1 and the lower half stepped bearing box body 2 are oppositely arranged and spliced together to form a shell of the stepped bearing box, and a bearing box cavity 3 is arranged in a space inside the upper half stepped bearing box body 1 and the lower half stepped bearing box body 2;
the upper half stepped bearing box body 1 comprises an upper half coupling section 101, an upper half vibration measuring probe mounting section 102 and an upper half supporting bearing mounting section 103 which are integrally arranged from back to front;
the lower half-step bearing box body 2 comprises a lower half coupling section 201, a lower half oil return section 202 and a lower half bearing mounting section 203 which are integrally arranged from back to front;
an oil return hole 4 is formed in the lower coupling section 201, and the oil return hole 4 is communicated with the bearing box cavity 3.
As a specific solution of this embodiment, the inner diameter of the upper coupling half section 101 is larger than the inner diameter of the upper support bearing mounting section 103; the inner diameter of the upper half vibration measurement probe mounting section 102 is gradually and uniformly reduced from back to front.
As a specific scheme of this embodiment, an included angle between the inner wall of the upper half vibration measurement probe mounting section 102 and a central axis of the housing of the ladder type bearing box is 45 °, and an included angle between the inner wall of the lower half oil return section 202 and the central axis of the housing of the ladder type bearing box is 45 °.
In this embodiment, the first vibration measurement probe mounting section 102 and the second vibration measurement probe mounting section 202 adopt an inclined plane design that forms an included angle of 45 degrees with the middle section plane, so that the vibration measurement probe can be mounted while the oil return is ensured to be smooth.
As a concrete aspect of the present embodiment, a support bearing assembly 5 is mounted on the inner wall of the lower half support bearing mounting section 203;
the support bearing assembly 5 comprises a support bearing ring 501 arranged on the inner wall of the support bearing mounting section 203, a support bearing body 502 is coaxially arranged in the support bearing ring 501, and a plurality of adjusting blocks 503 are arranged between the support bearing ring 501 and the support bearing body 502; an axial front section of a main shaft 6 is rotatably arranged in an inner ring of the supporting bearing assembly 5, and a coupler 7 is arranged on an axial rear section of the main shaft 6. In this embodiment, the adjusting block 503 is a conventional adjusting block for a bearing known in the prior art, and the thickness of the adjusting block 503 is adjusted to meet the design requirement of the gap required for supporting the bearing ring 501 and the bearing body 502.
As a specific solution of this embodiment, a space is left between the upper half portion of the support bearing ring 501 and the inner wall of the upper half support bearing mounting section 103, and the space is the oil passing passage 8. In this embodiment, the oil passage 8 is used to prevent high-temperature oil smoke from being collected at the support bearing assembly 5.
As a specific solution of this embodiment, a supporting bearing ring installation slot 9 is formed in an inner wall of the lower half supporting bearing installation section 203, and a lower half portion of the supporting bearing ring 501 is installed in the supporting bearing ring installation slot 9. In this embodiment, the supporting bearing ring installation slot 9 can limit the supporting bearing ring 501 in the axial and circumferential directions.
As a specific scheme of this embodiment, the coupler 7 includes a coupler flange 701 and a coupler mounting disk 702 that are integrally arranged from back to front, and the coupler mounting disk 702 is installed outside the axial rear section of the main shaft 6. In this embodiment, the coupling flange 701 is used to connect a driving shaft for driving the centrifugal compressor, and the coupling mounting plate 702 is used to protect the main shaft 6.
As a specific scheme of this embodiment, an upper coupling shield slot 10 is formed on an inner wall of the axial rear end of the upper coupling half section 101; the lower coupling section 201 is provided with a lower coupling guard slot 11 on the inner wall of the axial rear end. In this embodiment, the upper coupling shield locking groove 10 and the coupling shield locking groove 11 are used for mounting the coupling shield.
As a specific scheme of this embodiment, the upper half stepped bearing housing 1 and the lower half stepped bearing housing 2 are mirror symmetric structures; namely, the upper coupling half section 101 and the lower coupling half section 201 are mirror symmetrical structures; the upper half vibration measurement probe mounting section 102 and the lower half oil return section 202 are mirror symmetry structures; the upper bearing half mounting section 103 and the lower bearing half mounting section 203 are mirror images.
The utility model discloses a theory of operation as follows:
after the notch cuttype bearing box is connected with the centrifugal compressor casing, drive main shaft 6 rotates, shaft coupling ring flange 701 rotates with main shaft 6 is synchronous, let in bearing box cavity 3 with lubricating oil through oil gallery 4, with lubricated and cooling back shaft bearing subassembly 5 and shaft coupling 7, because the interval between the excircle of shaft coupling ring flange 701 and the notch cuttype bearing box inner wall is great, and because oil gallery 4 is located the bottom of bearing box cavity 3, the oil level in bearing box cavity 3 is lower, consequently, shaft coupling ring flange 701 can not stir the fluid in bearing box cavity 3, make the oil return temperature of bearing box and the temperature of shaft coupling mounting disc 702 can not be too high, and then guaranteed the even running of unit.
Claims (10)
1. The stepped bearing box structure of the centrifugal compressor is characterized by comprising an upper half stepped bearing box body (1) and a lower half stepped bearing box body (2), wherein the upper half stepped bearing box body (1) and the lower half stepped bearing box body (2) are oppositely arranged and spliced together to form a shell of the stepped bearing box, and the space in the upper half stepped bearing box body (1) and the lower half stepped bearing box body (2) is a bearing box cavity (3);
the upper half stepped bearing box body (1) comprises an upper half coupling section (101), an upper half vibration measuring probe mounting section (102) and an upper half supporting bearing mounting section (103) which are integrally arranged from back to front;
the lower half-step type bearing box body (2) comprises a lower half coupling section (201), a lower half oil return section (202) and a lower half bearing mounting section (203) which are integrally arranged from back to front;
and an oil return hole (4) is formed in the lower coupling half section (201), and the oil return hole (4) is communicated with the bearing box cavity (3).
2. Stepped bearing housing construction for a centrifugal compressor according to claim 1, characterized in that the inner diameter of said upper coupling half section (101) is larger than the inner diameter of said upper support bearing mounting section (103); the inner diameter of the upper half vibration measurement probe mounting section (102) is gradually and uniformly reduced from back to front.
3. The stepped bearing housing structure of a centrifugal compressor according to claim 1, wherein an angle between an inner wall of the upper half vibration measuring probe mounting section (102) and a central axis of a housing of the stepped bearing housing is 45 °, and an angle between an inner wall of the lower half oil return section (202) and a central axis of a housing of the stepped bearing housing is 45 °.
4. The stepped bearing housing structure of a centrifugal compressor according to claim 1, wherein a support bearing assembly (5) is mounted on an inner wall of said lower half support bearing mounting section (203);
the supporting bearing assembly (5) comprises a supporting bearing ring (501) on the inner wall of the supporting bearing installation section (203), a supporting bearing body (502) is coaxially arranged in the supporting bearing ring (501), and a plurality of adjusting blocks (503) are arranged between the supporting bearing ring (501) and the supporting bearing body (502); the axial front section of the main shaft (6) is rotatably arranged in the supporting bearing body (502), and the axial rear section of the main shaft (6) is provided with a coupler (7).
5. Stepped bearing housing structure of a centrifugal compressor according to claim 4, characterized in that a space is left between the upper half of the support bearing ring (501) and the inner wall of the upper half bearing mounting section (103), which is a smoke passing passage (8).
6. The stepped bearing box structure of a centrifugal compressor according to claim 4, wherein a supporting bearing ring mounting groove (9) is formed in the inner wall of the lower half supporting bearing mounting section (203), and a lower half portion of the supporting bearing ring (501) is mounted in the supporting bearing ring mounting groove (9).
7. Stepped bearing housing structure of a centrifugal compressor according to claim 4, characterized in that the shaft coupling (7) comprises a shaft coupling flange plate (701) and a shaft coupling mounting plate (702) which are integrally arranged from back to front, and the shaft coupling mounting plate (702) is mounted outside the axial rear section of the main shaft (6).
8. The stepped bearing housing structure of a centrifugal compressor according to claim 1, wherein an upper coupling shield groove (10) is formed on an inner wall of a rear end of the upper coupling half section (101) in an axial direction; and a lower coupling shield clamping groove (11) is formed in the inner wall of the rear end of the lower coupling section (201) in the axial direction.
9. Stepped bearing housing structure of a centrifugal compressor according to claim 1, characterized in that said upper half stepped bearing housing (1) and lower half stepped bearing housing (2) are mirror symmetric structures.
10. Stepped bearing housing construction of a centrifugal compressor according to claim 9, characterised in that the upper coupling part (101) and the lower coupling part (201) are mirror-symmetrical; the upper half vibration measurement probe mounting section (102) and the lower half oil return section (202) are in mirror symmetry structures; the upper half supporting bearing mounting section (103) and the lower half supporting bearing mounting section (203) are of mirror symmetry structures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221851846.2U CN218030761U (en) | 2022-07-18 | 2022-07-18 | Notch cuttype bearing box structure of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221851846.2U CN218030761U (en) | 2022-07-18 | 2022-07-18 | Notch cuttype bearing box structure of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218030761U true CN218030761U (en) | 2022-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221851846.2U Active CN218030761U (en) | 2022-07-18 | 2022-07-18 | Notch cuttype bearing box structure of centrifugal compressor |
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| Country | Link |
|---|---|
| CN (1) | CN218030761U (en) |
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2022
- 2022-07-18 CN CN202221851846.2U patent/CN218030761U/en active Active
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