CN221170464U - Diaphragm coupler with axial displacement limiting function - Google Patents
Diaphragm coupler with axial displacement limiting function Download PDFInfo
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- CN221170464U CN221170464U CN202323454793.8U CN202323454793U CN221170464U CN 221170464 U CN221170464 U CN 221170464U CN 202323454793 U CN202323454793 U CN 202323454793U CN 221170464 U CN221170464 U CN 221170464U
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 60
- 230000008878 coupling Effects 0.000 claims description 20
- 238000010168 coupling process Methods 0.000 claims description 20
- 238000005859 coupling reaction Methods 0.000 claims description 20
- 238000012856 packing Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The utility model relates to a diaphragm coupler with an axial displacement limiting function, which comprises a middle lengthening section, wherein two ends of the middle lengthening section are respectively provided with a shaft sleeve and a diaphragm group which are connected into a whole, and the innovation point is that: the two ends of the middle lengthening section are also respectively provided with a limiting plate used for limiting the axial displacement of the equipment shaft in matched connection with the shaft sleeve, the shaft sleeve is connected with the diaphragm group through a connecting component, the connecting component comprises a long bolt, an overload protection limiting washer and a self-locking nut, the overload protection limiting washer is provided with a limiting skirt edge, the shaft sleeve is connected with the diaphragm group through the long bolt and the self-locking nut, the overload protection limiting washer is arranged on the long bolt and is positioned in a through hole of a connecting flange of the middle lengthening section, and an equipment shaft reverse limiting displacement gap is arranged between the limiting skirt edge and the inner side end surface of the connecting flange. The utility model is additionally provided with an axial displacement limiting function to limit the maximum upper limit of the allowable axial displacement of the coupler, and effectively protects the coupler diaphragm or motor equipment.
Description
Technical Field
The utility model relates to a diaphragm coupler, in particular to a diaphragm coupler with an axial displacement limiting function.
Background
The existing diaphragm coupler is a universal multipurpose coupler which is suitable for high rotation speed and high torque. The diaphragm coupling is widely accepted by users in the fields of industrial centrifugal pumps and compressor equipment, the smooth and durable design is subjected to industry verification, the diaphragm coupling is often appointed for use in industries such as the middle and downstream industries of the petroleum and natural gas industry, the power generation industry and the like, and the diaphragm coupling is widely applied to API petrochemical process pumps, industrial fans, compressors, boiler feed pumps and the like.
The prior art scheme of the diaphragm coupler can provide compensation for the relative displacement of the shaft head position of the equipment caused by the factors of foot movement, shaft thermal expansion, motor shaft floating and the like, the displacement is finally compensated through the deformation of the diaphragm, and certain axial force generated by the deformation of the diaphragm is finally applied to the bearing of each rotor shaft to form force balance. While the deformability of each type of coupling is fixed, so that the user needs to evaluate the final possible relative displacement of the rotor shaft of the device, which needs to be within a given bearing range of the diaphragm coupling,
In fact, there are other situations, such as motors using sliding bearings, where the final position of the shaft is determined by the motor magnetic centre line, and there may be situations where the actual magnetic centre line deviates from the theoretical, resulting in deviations of the axial position of the motor shaft from the design value during operation, which may lead to excessive deformation of the diaphragm (i.e. axial displacement beyond the diaphragm allowable value). Another possible case is: when the motor runs at the correct magnetic force center line position, the device shaft at the other end is thermally expanded or the ground leg is displaced to cause the relative movement of the shaft head, and the reactive axial force of the deformation compensation generated by the diaphragm on the displacement can force the motor rotor to deviate from the correct magnetic force center line position.
In both cases, if the coupling itself is capable of limiting the deformation of the diaphragm (i.e. limiting the relative displacement of the stub shafts), it is possible, on the one hand, to extend the service life of the diaphragm always within the range of permitted deformations, and, on the other hand, to bring the deviation of the magnetic force center line of the motor within the maximum permitted range desired by the user. Therefore, it is necessary to design a diaphragm coupling with axial displacement limitation.
Disclosure of Invention
The purpose of the utility model is that: the diaphragm coupler with the axial displacement limiting function is provided, wherein the axial displacement limiting function is additionally arranged to limit the maximum upper limit of the allowable axial displacement of the coupler, and can effectively protect coupler diaphragms or motor equipment.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a take diaphragm shaft coupling of axial displacement restriction function, includes middle extension, the both ends of middle extension are equipped with the axle sleeve diaphragm linking mechanism that the structure is the same respectively, axle sleeve diaphragm linking mechanism includes axle sleeve and diaphragm group, the axle sleeve is connected with the diaphragm group, and every diaphragm group can be dismantled with the one end of middle extension respectively and be connected, and its innovation point lies in:
The two ends of the middle lengthening section are respectively provided with a limiting plate for limiting the axial displacement of the equipment shaft which is connected with the shaft sleeve in a matched manner, the limiting plate is provided with a limiting bulge at the inner end of the shaft sleeve, a positive limiting displacement gap d1 of the equipment shaft is arranged between the limiting bulge and the end face of the inner end of the shaft sleeve,
The two ends of the middle lengthening section are respectively provided with a connecting flange, the connecting flange is provided with a plurality of through holes, the shaft sleeve is connected with the diaphragm group through a connecting component, the connecting component comprises a long bolt, an overload protection limit gasket and a first self-locking nut, the inner diameter of the through hole of the connecting flange is larger than the outer diameter of the overload protection limit gasket, the overload protection limit gasket is provided with a limit skirt edge,
The shaft sleeve is connected with the diaphragm group through a long bolt, a first self-locking nut is screwed at the tail of the long bolt, the overload protection limiting gasket is arranged on the long bolt and is positioned in a through hole corresponding to the connecting flange, and an equipment shaft reverse limit displacement gap d2 is formed between the limiting skirt edge of the overload protection limiting gasket and the inner side end surface of the connecting flange.
In the technical scheme, the device shaft forward limit displacement gap d1 between the limit protrusion and the inner end surface of the shaft sleeve is 0.6-3.2 mm, and the device shaft reverse limit displacement gap d2 between the limit skirt and the inner end surface of the connecting flange of the middle lengthening section is 0.6-3.2 mm.
In the technical scheme, the limiting plate is arranged on the end face of the middle extension section and is pressed into a whole with the middle extension section in an interference manner.
In the technical scheme, the limiting protrusions of the limiting plates are protrusions of arc-shaped structures.
In the above technical scheme, the flange of middle extension section passes through coupling assembling and is connected with the diaphragm group that corresponds, coupling assembling includes short bolt, second self-locking nut and overload protection packing ring, the flange of middle extension section passes through short bolt and diaphragm group and links as an organic wholely, and the afterbody of short bolt has twisted the second self-locking nut, overload protection packing ring is established on the short bolt and is located the through-hole that flange corresponds.
In the technical scheme, the shaft sleeve is provided with the flange, and the flange of the shaft sleeve is connected with the diaphragm group through the long bolt.
The utility model has the positive effects that: after the diaphragm coupler with the axial displacement limiting function is adopted, as the two ends of the middle lengthening section are respectively provided with the limiting plates for limiting the axial displacement of the equipment shaft which is in matched connection with the shaft sleeve, the limiting plates are provided with the limiting protrusions at the inner ends of the shaft sleeve, the positive limiting displacement gap d1 of the equipment shaft is arranged between the limiting protrusions and the end face of the inner end of the shaft sleeve,
When the equipment shaft moves axially close to each other, the maximum upper limit of the axial displacement in the direction allowed by the coupler is formulated by adding the limiting mechanism and designing the size of the gap between the limiting bulge and the end face of the inner end of the shaft sleeve, if the equipment shaft moves excessively, the gap is zero, and the equipment shaft contacts with the limiting bulge and limits further displacement. Therefore, the risks mentioned by the diaphragm group of the coupler in the prior art can be effectively avoided, and the coupler diaphragm or motor equipment of a user can be effectively protected;
The two ends of the middle lengthening section are respectively provided with a connecting flange, the connecting flange is provided with a plurality of through holes, the shaft sleeve is connected with the diaphragm group through a connecting component, the connecting component comprises a long bolt, an overload protection limit gasket and a first self-locking nut, the inner diameter of the through hole of the connecting flange is larger than the outer diameter of the overload protection limit gasket, the overload protection limit gasket is provided with a limit skirt edge,
The shaft sleeve is connected with the diaphragm group through a long bolt, the tail part of the long bolt is screwed with a first self-locking nut, the overload protection limit gasket is arranged on the long bolt and positioned in a through hole corresponding to the connecting flange, a device shaft reverse limit displacement gap d2 is arranged between the limit skirt edge and the inner side end surface of the connecting flange,
When the equipment shaft is subjected to axial displacement far away from each other, the maximum upper limit of the axial displacement in the direction allowed by the coupler is formulated by adding a limiting mechanism and designing the size of a gap between an overload protection limiting gasket and the end face of a connecting flange of the middle lengthening section, and when the equipment is subjected to excessive axial displacement, the gap is zero, and the overload protection limiting gasket is contacted with the connecting flange of the middle lengthening section and limits further displacement, so that the risks mentioned by a diaphragm group of the coupler in the prior art can be effectively avoided, and the coupler diaphragm or motor equipment of a user can be effectively protected;
That is, the present utility model can limit the axial displacement of the device shaft completely and can specify a value in two directions because of adding two maximum upper limits of the axial displacement. The device and the method realize effective protection of the coupler diaphragm or motor equipment, can effectively prevent excessive deformation of the diaphragm group, and can also enable the deviation of the magnetic force center line of the motor to be in the maximum operation range expected by a user.
Drawings
FIG. 1 is a schematic diagram of the structure of an embodiment of the present utility model;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is an enlarged schematic view of a portion B in fig. 1.
Detailed Description
The utility model is further illustrated, but not limited, by the following examples in connection with the accompanying drawings.
As shown in fig. 1, 2 and 3, the diaphragm coupling with the axial displacement limiting function comprises a middle lengthening section 1, two ends of the middle lengthening section 1 are respectively provided with a shaft sleeve diaphragm connecting mechanism with the same structure, the shaft sleeve diaphragm connecting mechanism comprises a shaft sleeve 2 and diaphragm groups 3, the shaft sleeve 2 is connected with the diaphragm groups 3, each diaphragm group 3 is respectively and detachably connected with one end of the middle lengthening section 1,
The two ends of the middle lengthening section 1 are respectively provided with a limiting plate 4 for limiting the axial displacement of the equipment shaft in matched connection with the shaft sleeve 2, the limiting plate 4 is provided with a limiting bulge 41 at the inner end of the shaft sleeve 2, a positive limiting displacement gap d1 of the equipment shaft is arranged between the limiting bulge 41 and the end face of the inner end of the shaft sleeve 2,
The two ends of the middle lengthening section 1 are respectively provided with a connecting flange 11, the connecting flanges 11 are provided with a plurality of through holes, the shaft sleeve 2 is connected with the diaphragm group 3 through a connecting component, the connecting component comprises a long bolt 8, an overload protection limit gasket 7 and a first self-locking nut 6, the inner diameter of the through hole of the connecting flange 11 is larger than the outer diameter of the overload protection limit gasket 7, the overload protection limit gasket 7 is provided with a limit skirt edge 71,
The shaft sleeve 2 is connected with the diaphragm group 3 through a long bolt 8, a first self-locking nut 6 is screwed at the tail of the long bolt 8, the overload protection limiting washer 7 is arranged on the long bolt 8 and is positioned in a through hole corresponding to the connecting flange 11, and an equipment shaft reverse limit displacement gap d2 is arranged between the limiting skirt edge 71 and the inner side end surface of the connecting flange 11.
As shown in fig. 2 and 3, in order to make the structure more reasonable, the device axis forward limit displacement gap d1 between the limit protrusion 41 and the inner end surface of the shaft sleeve 2 is 0.6-3.2 mm, and the device axis reverse limit displacement gap d2 between the limit skirt 71 and the inner end surface of the connecting flange 11 of the middle extension section 1 is 0.6-3.2 mm. The gap value needs to be taken into consideration by the maximum deformability of the diaphragm group or the axial displacement limit value desired by the user.
As shown in fig. 1, in order to make the limiting plate and the middle extension section fast positioning press-fit, the limiting plate 4 is arranged on the end surface of the middle extension section 1 and is integrally press-fitted with the middle extension section in an interference fit manner.
Further, for further optimization of the structure, as shown in fig. 1, the limiting protrusion 41 of the limiting plate 4 is a protrusion with an arc-shaped structure. Of course, the present invention is not limited thereto, and other shapes or shaped limit protrusions may be used.
As shown in fig. 1, in order to enable the middle extension section to be quickly connected with the diaphragm group, the connecting flange 11 of the middle extension section 1 is connected with the corresponding diaphragm group 3 through a connecting assembly, the connecting assembly comprises a short bolt 5, a second self-locking nut 10 and an overload protection washer 9, the connecting flange 11 of the middle extension section 1 is connected with the diaphragm group 3 into a whole through the short bolt 5, the second self-locking nut 10 is screwed at the tail of the short bolt 5, and the overload protection washer 9 is arranged on the short bolt 5 and is positioned in a through hole corresponding to the connecting flange 11. The connection between the shaft sleeve and the diaphragm group and the connection between the diaphragm group and the middle lengthening section 1 are in a staggered interval arrangement mode.
As shown in fig. 1, in order to achieve a fast positioning assembly of the sleeve and the diaphragm assembly, the sleeve 2 has a flange, and the flange of the sleeve 2 is connected to the diaphragm assembly 3 by means of a long bolt 8.
As shown in fig. 2, when the equipment shaft moves axially close to each other, the limit mechanism is added, and the size of the gap between the limit protrusion and the inner end surface of the shaft sleeve is designed to set the maximum upper limit of the axial displacement allowed by the coupling in the direction, if the equipment shaft moves excessively, the gap is zero, and the equipment shaft contacts with the limit protrusion and limits further displacement. Therefore, the risks mentioned by the diaphragm group of the coupler in the prior art can be effectively avoided, and the coupler diaphragm or motor equipment of a user can be effectively protected.
As shown in fig. 3, when the device shaft is axially displaced far from each other, the gap between the overload protection limit washer and the end face of the connecting flange of the middle extension section is designed by adding the limit mechanism, so as to set the maximum upper limit of the axial displacement in the direction allowed by the coupler, and when the device is excessively displaced, the gap is zero, and the overload protection limit washer is contacted with the connecting flange of the middle extension section and limits further displacement, so that the risks mentioned by the diaphragm group of the coupler in the prior art can be effectively avoided, and the coupler diaphragm or motor equipment of a user can be effectively protected.
That is, the present utility model can limit the axial displacement of the device shaft completely and can specify a value in two directions because of adding two maximum upper limits of the axial displacement. The device and the method realize effective protection of the coupler diaphragm or motor equipment, can effectively prevent excessive deformation of the diaphragm group, and can also enable the deviation of the magnetic force center line of the motor to be in the maximum operation range expected by a user.
With the above-described preferred embodiments according to the present utility model as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.
Claims (6)
1. The utility model provides a take diaphragm shaft coupling of axial displacement restriction function, includes middle extension (1), the both ends of middle extension (1) are equipped with the axle sleeve diaphragm linking mechanism that the structure is the same respectively, axle sleeve diaphragm linking mechanism includes axle sleeve (2) and diaphragm group (3), axle sleeve (2) are connected with diaphragm group (3), and every diaphragm group (3) can dismantle with the one end of middle extension (1) respectively and be connected, its characterized in that:
the two ends of the middle lengthening section (1) are respectively provided with a limiting plate (4) for limiting the axial displacement of the equipment shaft which is in matched connection with the shaft sleeve (2), the limiting plate (4) is provided with a limiting bulge (41) at the inner end of the shaft sleeve (2), a positive limiting displacement gap d1 of the equipment shaft is arranged between the limiting bulge (41) and the end face of the inner end of the shaft sleeve (2),
The two ends of the middle lengthening section (1) are respectively provided with a connecting flange (11), the connecting flanges (11) are provided with a plurality of through holes, the shaft sleeve (2) is connected with the diaphragm group (3) through a connecting member, the connecting member comprises a long bolt (8), an overload protection limit gasket (7) and a first self-locking nut (6), the inner diameter of the through hole of the connecting flange (11) is larger than the outer diameter of the overload protection limit gasket (7), the overload protection limit gasket (7) is provided with a limit skirt edge (71),
The shaft sleeve (2) is connected with the diaphragm group (3) through the long bolt (8), a first self-locking nut (6) is screwed at the tail of the long bolt (8), the overload protection limiting gasket (7) is arranged on the long bolt (8) and is positioned in a through hole corresponding to the connecting flange (11), and an equipment shaft reverse limit displacement gap d2 is formed between the limiting skirt edge (71) of the overload protection limiting gasket and the inner side end surface of the connecting flange (11).
2. The diaphragm coupling with axial displacement limiting function according to claim 1, wherein: the device shaft forward limit displacement gap d1 between the limit protrusion (41) and the inner end surface of the shaft sleeve (2) is 0.6-3.2 mm, and the device shaft reverse limit displacement gap d2 between the limit skirt edge (71) and the inner end surface of the connecting flange (11) of the middle lengthening section (1) is 0.6-3.2 mm.
3. The diaphragm coupling with axial displacement limiting function according to claim 1, wherein: the limiting plate (4) is arranged on the end face of the middle lengthening section (1) and is pressed into a whole with the middle lengthening section in an interference manner.
4. The diaphragm coupling with axial displacement limiting function according to claim 1, wherein: the limiting protrusions (41) of the limiting plates (4) are protrusions of arc-shaped structures.
5. The diaphragm coupling with axial displacement limiting function according to claim 1, wherein: the connecting flange (11) of middle extension section (1) is connected with corresponding diaphragm group (3) through coupling assembling, coupling assembling includes short bolt (5), second self-locking nut (10) and overload protection packing ring (9), flange (11) of middle extension section (1) link as an organic wholely with diaphragm group (3) through short bolt (5), and the afterbody of short bolt (5) is twisted second self-locking nut (10), overload protection packing ring (9) are established on short bolt (5) and are located the through-hole that flange (11) corresponds.
6. The diaphragm coupling with axial displacement limiting function according to claim 1, wherein: the shaft sleeve (2) is provided with a flange, and the flange of the shaft sleeve (2) is connected with the diaphragm group (3) through a long bolt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323454793.8U CN221170464U (en) | 2023-12-18 | 2023-12-18 | Diaphragm coupler with axial displacement limiting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323454793.8U CN221170464U (en) | 2023-12-18 | 2023-12-18 | Diaphragm coupler with axial displacement limiting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221170464U true CN221170464U (en) | 2024-06-18 |
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ID=91534733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323454793.8U Active CN221170464U (en) | 2023-12-18 | 2023-12-18 | Diaphragm coupler with axial displacement limiting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221170464U (en) |
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2023
- 2023-12-18 CN CN202323454793.8U patent/CN221170464U/en active Active
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