CN117773167A - Rotary main shaft of nuclear power plant valve sealing surface repairing equipment - Google Patents
Rotary main shaft of nuclear power plant valve sealing surface repairing equipment Download PDFInfo
- Publication number
- CN117773167A CN117773167A CN202410007309.7A CN202410007309A CN117773167A CN 117773167 A CN117773167 A CN 117773167A CN 202410007309 A CN202410007309 A CN 202410007309A CN 117773167 A CN117773167 A CN 117773167A
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- main shaft
- sleeve
- wall surface
- shaft
- power plant
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- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 230000001681 protective effect Effects 0.000 claims description 13
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 238000001514 detection method Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Sealing Devices (AREA)
Abstract
The invention discloses a rotary main shaft of a nuclear power plant valve sealing surface repairing device, which comprises a main shaft body, a shaft sleeve, a sliding sleeve, a locking piece and an air bag ring, wherein the shaft sleeve is in sliding sleeve connection with the main shaft body; the air bag ring is arranged between the inner end part of the shaft sleeve and the main shaft body, and is externally connected with an air source; the outer wall surface of the upper part of the main shaft body is matched with the inner wall surface of the upper part of the shaft sleeve, both the outer wall surface of the sliding sleeve and the inner wall surface of the lower part of the shaft sleeve are conical surfaces; the upper outer wall surface of the main shaft body and the extension line of the outer wall surface of the sliding sleeve are intersected at any point of the main shaft body. The rotary main shaft of the nuclear power plant valve sealing surface repairing device can reduce friction force caused by rotation, can bear larger radial load, biaxial load and overturning moment, and can be suitable for high-speed and high-operation-precision places.
Description
Technical Field
The invention relates to the technical field of high-precision machining detection, in particular to a rotary main shaft of a nuclear power plant valve sealing surface repairing device.
Background
The turning spindle is the most central component of the machine tool, and its turning accuracy directly determines the machining or detection accuracy of the machine tool.
In the prior art, in the field of high-precision processing detection, most of main shafts use dense bead shafting, such as a numerical control valve polishing machine, when running at a high speed, larger radial load, biaxial load and overturning moment cannot be born, and when rotating, larger friction force can be generated due to large-area application of dense beads, so that the limit speed of the main shaft is limited.
Disclosure of Invention
The invention aims to solve the technical problem of providing a rotary main shaft of a nuclear power plant valve sealing surface repairing device.
The technical scheme adopted for solving the technical problems is as follows: the rotary main shaft of the nuclear power plant valve sealing surface repairing device comprises a main shaft body, a shaft sleeve, a sliding sleeve, a locking piece and an air bag ring, wherein the shaft sleeve is in sliding sleeve connection with the main shaft body, the sliding sleeve is in sliding sleeve connection with the main shaft body close to the outer end of the shaft sleeve, and the locking piece is arranged on the outer side of the sliding sleeve and is connected and locked with the main shaft body so as to prevent the sliding sleeve from moving along the axial direction of the main shaft body; the air bag ring is arranged between the inner end part of the shaft sleeve and the main shaft body, and is externally connected with an air source;
the outer wall surface of the upper part of the main shaft body is matched with the inner wall surface of the upper part of the shaft sleeve, the outer wall surface of the sliding sleeve is matched with the inner wall surface of the lower part of the shaft sleeve, and the outer wall surface and the inner wall surface are both conical surfaces;
and the upper outer wall surface of the main shaft body and the extension line of the outer wall surface of the sliding sleeve are intersected at any point of the main shaft body.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device according to the present invention, the taper of the upper inner wall surface of the sleeve is the same as the taper of the upper outer wall surface of the main shaft body, and the taper of the outer wall surface of the sliding sleeve is the same as the taper of the lower inner wall surface of the sleeve.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing apparatus according to the present invention, the rotary main shaft of the nuclear power plant valve sealing surface repairing apparatus further includes a first protection sleeve and a second protection sleeve, the first protection sleeve is pressed between the upper outer wall surface of the main shaft body and the upper inner wall surface of the sleeve, and the second protection sleeve is pressed between the outer wall surface of the sliding sleeve and the lower inner wall surface of the sleeve.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device, an air passage is arranged in the shaft sleeve, penetrates through the inner end surface of the shaft sleeve and is communicated with the air bag ring, and penetrates through the outer side surface or the outer end surface of the shaft sleeve and is externally connected with an air source.
Preferably, in the rotary main shaft of the valve sealing surface repairing device for a nuclear power plant according to the present invention, the main shaft body includes a main shaft section, a first shaft section, a second shaft section and a third shaft section which are sequentially arranged, the diameter of the main shaft section is larger than the maximum diameter of the first shaft section, the maximum diameter of the second shaft section is smaller than or equal to the minimum diameter of the first shaft section, and the maximum diameter of the third shaft section is smaller than the minimum diameter of the second shaft section;
the outer wall surface of the first shaft section is a conical surface.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device, the shaft sleeve comprises a main body ring section, a first ring section and a second ring section, wherein the first ring section and the second ring section are respectively adjacent to the main body ring section, the inner wall surface of the first ring section is a conical surface, and the inner wall surface of the second ring section is a conical surface.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device according to the present invention, the rotary main shaft of the nuclear power plant valve sealing surface repairing device further includes an intermediate protection sleeve, and the intermediate protection sleeve is disposed between the second shaft section and the main body ring section.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device according to the present invention, the rotary main shaft of the nuclear power plant valve sealing surface repairing device further includes a first elastic member and a second elastic member, the first elastic member is disposed between the sliding sleeve and the second shaft section, and the second elastic member is disposed between the sliding sleeve and the locking member.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing apparatus according to the present invention, the rotary main shaft of the nuclear power plant valve sealing surface repairing apparatus further includes a thrust member provided between the locking member and the second elastic member to prevent the second elastic member from moving in an axial direction of the main shaft body.
Preferably, in the rotary main shaft of the nuclear power plant valve sealing surface repairing device according to the present invention, the rotary main shaft of the nuclear power plant valve sealing surface repairing device further includes at least one spacer, and the spacer is disposed between the locking member and the thrust member.
By implementing the invention, the following beneficial effects are achieved:
the rotary main shaft of the nuclear power plant valve sealing surface repairing device can reduce friction force caused by rotation, can bear larger radial load, biaxial load and overturning moment, and can be suitable for high-speed and high-operation-precision places.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic diagram of a rotary spindle structure of a valve seal face repairing apparatus for a nuclear power plant according to an embodiment of the present invention.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present invention, a detailed description of embodiments of the present invention will be made with reference to the accompanying drawings.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or chemically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
Referring to fig. 1, an embodiment of the invention discloses a rotary main shaft of a valve sealing surface repairing device of a nuclear power plant, which is suitable for the valve sealing surface repairing device with high speed and high operation precision and improves the processing efficiency. It will be appreciated that the use of the rotary spindle of the present invention in a nuclear power plant valve seal face repair apparatus is merely an example, and that in other embodiments the rotary spindle may be used in other similar machine tools requiring high speed and high operating accuracy, and should be within the scope of the present invention.
The rotary main shaft comprises a main shaft body 1, a shaft sleeve 2, a sliding sleeve 3, a locking piece 4, an air bag ring 5, a first protective sleeve 61, a middle protective sleeve 62 and a second protective sleeve 63. The sleeve 2 is slidably sleeved on the main shaft body 1, and the first protective sleeve 61 is pressed between the upper outer wall surface 121 of the main shaft body 1 and the upper inner wall surface 221 of the sleeve 2. The sliding sleeve 3 is slidably sleeved on the main shaft body 1 near the outer end of the shaft sleeve 2, and the second protective sleeve 63 is tightly pressed between the outer wall surface of the sliding sleeve 3 and the lower inner wall surface 231 of the shaft sleeve 2. The locking piece 4 is arranged on the outer side of the sliding sleeve 3 and is connected and locked with the main shaft body 1 so as to prevent the sliding sleeve 3 from moving along the axial direction of the main shaft body 1.
The air bag ring 5 is arranged between the inner end part of the shaft sleeve 2 and the main shaft body 1, and the air bag ring 5 is externally connected with an air source. The inside of the shaft sleeve 2 is provided with an air passage 24, the air passage 24 penetrates through the inner end surface of the shaft sleeve 2 and is communicated with the air bag ring 5, and the air passage 24 penetrates through the outer side surface or the outer end surface of the shaft sleeve 2 and is externally connected with an air source. After compressed air is filled into the air bag ring 5, the rotary main shaft can greatly lighten the friction force caused by rotation.
The upper outer wall surface 121 of the main shaft body 1 is engaged with the upper inner wall surface 221 of the sleeve 2, both of which are tapered surfaces, and the outer wall surface of the sliding sleeve 3 is engaged with the lower inner wall surface 231 of the sleeve 2, both of which are tapered surfaces. The upper outer wall 121 of the main shaft body 1 and the extension line of the outer wall of the sliding sleeve 3 intersect at any point of the main shaft body 1, and thrust force to the main shaft body 1 can be generated, so that the rotary main shaft can bear large radial load, double axial load and overturning moment.
Further, the upper inner wall surface 221 of the sleeve 2 has the same taper as the upper outer wall surface 121 of the main shaft body 1, and the outer wall surface of the sleeve 3 has the same taper as the lower inner wall surface 231 of the sleeve 2. Preferably, in some embodiments, the taper of the upper inner wall 221 of the shaft sleeve 2, the upper outer wall 121 of the main shaft body 1, the outer wall of the sliding sleeve 3 and the lower inner wall 231 of the shaft sleeve 2 are all the same, so that thrust force to the axle center of the main shaft body 1 is generated, and thus the rotary main shaft can bear large radial load, double axial load and overturning moment.
Further, the main shaft body 1 in some embodiments includes a main shaft section 11, a first shaft section 12, a second shaft section 13 and a third shaft section 14 which are sequentially arranged, the diameter of the main shaft section 11 is larger than that of the first shaft section 12, the middle part of the lower end surface of the main shaft section 11 is connected with the first shaft section 12, the periphery of the lower end surface of the main shaft section 11 is matched with the upper end surface of the shaft sleeve 2, and the air bag ring 5 is arranged therein. The maximum diameter of the second shaft section 13 is smaller than or equal to the minimum diameter of the first shaft section 12, and the maximum diameter of the third shaft section 14 is smaller than the minimum diameter of the second shaft section 13.
The outer wall surface of the first shaft section 12 is a conical surface, the first shaft section 12 is a frustum, the second shaft section 13 and the third shaft section 14 are cylinders, and the sliding sleeve 3 is sleeved on the third shaft section 14 in a sliding manner. Preferably, to facilitate the installation and connection of the locking member 4 to an external member, the main shaft body 1 may in some embodiments further comprise a fourth shaft section 15 arranged behind the third shaft section 14, the diameter of the fourth shaft section 15 being smaller than the smallest diameter of the third shaft section 14. The locking member 4 is preferably a nut, and is screwed on the third shaft section 14, so as to limit the sliding range of the sliding sleeve 3.
Further, the sleeve 2 in some embodiments comprises a main body ring segment 22, a first ring segment 21 and a second ring segment 23 adjacent to the main body ring segment 22, respectively, wherein the inner wall surface of the first ring segment 21 is a conical surface, and the inner wall surface of the second ring segment 23 is a conical surface. The main body ring section 22 is adjacent to the second shaft section 13, and an intermediate protective sleeve 62 is provided between the second shaft section 13 and the main body ring section 22. To retain the intermediate protective sleeve 62, a retainer interference fit, such as a screw, may be provided on the second shaft section 13.
Further, the rotating main shaft further comprises a first elastic member 71, a second elastic member 72, a thrust member 8 and a gasket 9. The first elastic member 71 and the second elastic member 72 act as a compressive load, the first elastic member 71 being provided between the sliding sleeve 3 and the second shaft section 13, and the second elastic member 72 being provided between the sliding sleeve 3 and the locking member 4. Preferably, the first elastic member 71 and the second elastic member 72 are both disc springs.
The thrust piece 8 is disposed between the locking piece 4 and the second elastic piece 72 to prevent the second elastic piece 72 from moving along the axial direction of the spindle body 1, and the gasket 9 is disposed between the locking piece 4 and the thrust piece 8. Preferably, the outer diameter of the thrust piece 8 is greater than or equal to the outer diameter of the sliding sleeve 3.
By implementing the invention, the following beneficial effects are achieved:
the rotary main shaft of the nuclear power plant valve sealing surface repairing device can reduce friction force caused by rotation, can bear larger radial load, biaxial load and overturning moment, and can be suitable for high-speed and high-operation-precision places.
It is to be understood that the above examples only represent preferred embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention; it should be noted that, for a person skilled in the art, the above embodiments or technical features may be freely combined, and several variations and modifications may be made, without departing from the spirit of the invention, which fall within the scope of the invention, i.e. the embodiments described in "some embodiments" may be freely combined with any of the above and below embodiments; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
Claims (10)
1. The rotary main shaft of the nuclear power plant valve sealing surface repairing device is characterized by comprising a main shaft body (1), a shaft sleeve (2), a sliding sleeve (3), a locking piece (4) and an air bag ring (5), wherein the shaft sleeve (2) is in sliding sleeve connection with the main shaft body (1), the sliding sleeve (3) is in sliding sleeve connection with the main shaft body (1) close to the outer end of the shaft sleeve (2), and the locking piece (4) is arranged on the outer side of the sliding sleeve (3) and is connected and locked with the main shaft body (1) so as to prevent the sliding sleeve (3) from moving along the axial direction of the main shaft body (1); the air bag ring (5) is arranged between the inner end part of the shaft sleeve (2) and the main shaft body (1), and the air bag ring (5) is externally connected with an air source;
an upper outer wall surface (121) of the main shaft body (1) is matched with an upper inner wall surface (221) of the shaft sleeve (2) and is a conical surface, and an outer wall surface of the sliding sleeve (3) is matched with a lower inner wall surface (231) of the shaft sleeve (2) and is a conical surface;
an upper outer wall surface (121) of the main shaft body (1) and an extension line of the outer wall surface of the sliding sleeve (3) intersect at any point of the main shaft body (1).
2. The rotary main shaft of a nuclear power plant valve sealing face repairing apparatus according to claim 1, characterized in that the upper inner wall surface (221) of the sleeve (2) has the same taper as the upper outer wall surface (121) of the main shaft body (1), and the outer wall surface of the sliding sleeve (3) has the same taper as the lower inner wall surface (231) of the sleeve (2).
3. The rotary main shaft of a nuclear power plant valve sealing face repair apparatus according to claim 2, characterized in that the rotary main shaft of the nuclear power plant valve sealing face repair apparatus further comprises a first protective sleeve (61) and a second protective sleeve (63), the first protective sleeve (61) being pressed between the upper outer wall surface (121) of the main shaft body (1) and the upper inner wall surface (221) of the sleeve (2), the second protective sleeve (63) being pressed between the outer wall surface of the sliding sleeve (3) and the lower inner wall surface (231) of the sleeve (2).
4. The rotary main shaft of the nuclear power plant valve sealing surface repairing device according to claim 1, wherein an air passage (24) is arranged in the shaft sleeve (2), the air passage (24) penetrates through the inner end surface of the shaft sleeve (2) and is communicated with the air bag ring (5), and the air passage (24) penetrates through the outer side surface or the outer end surface of the shaft sleeve (2) and is externally connected with an air source.
5. The rotary main shaft of a valve sealing surface repairing device of a nuclear power plant according to claim 2, wherein the main shaft body (1) comprises a main shaft section (11), a first shaft section (12), a second shaft section (13) and a third shaft section (14) which are sequentially arranged, the diameter of the main shaft section (11) is larger than the maximum diameter of the first shaft section (12), the maximum diameter of the second shaft section (13) is smaller than or equal to the minimum diameter of the first shaft section (12), and the maximum diameter of the third shaft section (14) is smaller than the minimum diameter of the second shaft section (13);
the outer wall surface of the first shaft section (12) is a conical surface.
6. The rotary main shaft of a valve sealing surface repair device of a nuclear power plant according to claim 5, wherein the shaft sleeve (2) comprises a main body ring section (22), a first ring section (21) and a second ring section (23) which are respectively adjacent to the main body ring section (22), an inner wall surface of the first ring section (21) is a conical surface, and an inner wall surface of the second ring section (23) is a conical surface.
7. The rotating main shaft of a nuclear power plant valve sealing face repair apparatus according to claim 6, characterized in that the rotating main shaft of the nuclear power plant valve sealing face repair apparatus further comprises an intermediate protective sleeve (62), the intermediate protective sleeve (62) being arranged between the second shaft section (13) and the main body ring section (22).
8. The rotating main shaft of a nuclear power plant valve sealing surface repair device according to any one of claims 5-7, further comprising a first elastic member (71) and a second elastic member (72), wherein the first elastic member (71) is arranged between the sliding sleeve (3) and the second shaft section (13), and wherein the second elastic member (72) is arranged between the sliding sleeve (3) and the locking member (4).
9. The rotary main shaft of a nuclear power plant valve sealing surface repair apparatus according to claim 8, further comprising a thrust member (8), the thrust member (8) being provided between the lock member (4) and the second elastic member (72) to prevent the second elastic member (72) from moving in the axial direction of the main shaft body (1).
10. The rotating main shaft of a nuclear power plant valve sealing face repair apparatus according to claim 9, characterized in that the rotating main shaft of the nuclear power plant valve sealing face repair apparatus further comprises at least one spacer (9), the spacer (9) being arranged between the locking member (4) and the thrust member (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410007309.7A CN117773167A (en) | 2024-01-03 | 2024-01-03 | Rotary main shaft of nuclear power plant valve sealing surface repairing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410007309.7A CN117773167A (en) | 2024-01-03 | 2024-01-03 | Rotary main shaft of nuclear power plant valve sealing surface repairing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117773167A true CN117773167A (en) | 2024-03-29 |
Family
ID=90394654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410007309.7A Pending CN117773167A (en) | 2024-01-03 | 2024-01-03 | Rotary main shaft of nuclear power plant valve sealing surface repairing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117773167A (en) |
-
2024
- 2024-01-03 CN CN202410007309.7A patent/CN117773167A/en active Pending
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