CN113280000A - End face tooth connecting structure with positioning function between impeller and main shaft - Google Patents
End face tooth connecting structure with positioning function between impeller and main shaft Download PDFInfo
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- CN113280000A CN113280000A CN202110689233.7A CN202110689233A CN113280000A CN 113280000 A CN113280000 A CN 113280000A CN 202110689233 A CN202110689233 A CN 202110689233A CN 113280000 A CN113280000 A CN 113280000A
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- positioning
- impeller
- main shaft
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
- F04D29/20—Mounting rotors on shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/18—Rotors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses an end face tooth connecting structure with a positioning function between an impeller and a main shaft. The inclined plane is arranged at the bottom edge of the central hole of the locking nut, so that the pull rod and the locking nut are on the axis as much as possible to reduce the unbalance. Through set up the locating hole and set up the lock nut locating pin on impeller and lock nut binding face for lock nut can rotate to same position when locking at every turn. By the aid of the method, the pull rod and the locking nut can be in the same position and are close to the axis line as much as possible during each re-installation after the dynamic balance is completed, so that the added value of unbalance caused by re-installation is reduced, vibration is smaller and more stable during operation of a system, and the service life of a unit is prolonged.
Description
Technical Field
The invention belongs to the field of impeller machinery, relates to a connecting structure of an impeller and a main shaft, and particularly relates to an end face tooth connecting structure with a positioning function between the impeller and the main shaft.
Background
In the prior art, the impeller and the main shaft are usually connected by using an end face tooth structure, when the impeller and the main shaft are connected by using the result, the impeller and the main shaft are radially positioned and torque-transmitted by using the end face tooth structure, and the axial locking and positioning between the impeller and the main shaft are realized by using the tensioning assembly. In the end face tooth structure, end face teeth are arranged on the end face of a main shaft, end face teeth are also arranged on the end face of the shaft side of an impeller, and the end face of the main shaft is meshed with the end face teeth on the end face of the shaft side of the impeller, so that the radial positioning and torque transmission between the impeller and the main shaft are realized; the tensioning assembly comprises a pull rod and a locking nut, the pull rod is a stud, a central through hole extending along the axial direction is formed in the center of the impeller, an inner threaded hole is formed in the end face of the main shaft, one end of the pull rod penetrates through the central through hole of the impeller and then is in threaded connection with the inner threaded hole in the end portion of the main shaft, the other end of the pull rod is locked and fixed with the locking nut at the locking end of the impeller, and therefore axial locking and positioning between the impeller and the main shaft are achieved, and then dynamic balance testing is conducted. In the end face tooth connecting structure between the existing impeller and a main shaft, under the influence of various factors in assembly, when the main shaft and the impeller are reassembled after being subjected to dynamic balance, a pull rod and a locking nut are difficult to accurately return to the same position as that in dynamic balance, and meanwhile, due to the fact that a certain gap exists between the pull rod and the impeller locking end, the pull rod may deviate from a central line when being tensioned, and the unbalance amount after reassembly is increased due to the reasons. Sometimes, the dynamic balance is finished according to the G1 standard, and the dynamic balance checked after the assembly may exceed the G1 range, so that the unbalance amount of the turbine unit is increased during operation, the vibration is high, and the service life of the turbine unit is influenced after the turbine unit is operated for a long time.
In order to solve the problems, the invention provides an end face tooth connecting structure with a positioning function. Through increasing positioner, pull rod and lock nut can both be screwed to the same position when guaranteeing the assembly at every turn to increase of unbalance amount when reducing the repacking, vibration is littleer when making the unit move, and is more steady.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention provides an end face tooth connecting structure with a positioning function between an impeller and a main shaft, and the pull rod and a locking nut can be screwed to the same position each time in assembly by adding a positioning device. Through the application of the structure, the increase of unbalance amount after the assembly caused by human factors can be reduced, so that the vibration of the unit is smaller and more stable during operation, and the service life of the unit is prolonged.
In order to achieve the technical purpose, the solution of the invention is as follows:
an end face tooth connecting structure with a positioning function between an impeller and a main shaft is characterized in that the impeller and the main shaft are axially fastened through a tensioning assembly, the tensioning assembly comprises a pull rod and a locking nut, a central through hole extending along the axial direction is formed in the center of the impeller, and one end of the pull rod penetrates through the central through hole of the impeller and then is in threaded connection with an internal thread hole in the end portion of the main shaft; end face teeth which are meshed with each other are arranged between the end face of the main shaft and the end face of the shaft side of the impeller,
the locking end of the impeller is provided with a central counter bore, the other end of the pull rod is locked and fixed with the locking nut at the central counter bore,
the pull rod is provided with an annular boss, the annular boss is axially positioned at the end face tooth joint between the impeller and the main shaft, and grooves matched with the outer diameter of the annular boss are respectively arranged on the end face of the shaft side of the impeller and the end face of the main shaft, so that after the impeller and the main shaft are axially locked, the annular boss is positioned in the groove between the end face of the shaft side of the impeller and the end face of the main shaft;
the annular boss is at least symmetrically provided with two first positioning holes extending along the axial direction in the circumferential direction, the bottom of a counter bore of the end face of the main shaft is at least symmetrically provided with two second positioning holes corresponding to the first positioning holes in the circumferential direction one by one, and pull rod positioning pins penetrate through the first positioning holes and the second positioning holes.
Preferably, the pull rod positioning pin is an inclined pin with a large top and a small bottom, and accordingly, the first positioning hole and the second positioning hole are inclined holes with large top and small bottom.
Preferably, the locking nut is at least symmetrically provided with two third positioning holes in the circumferential direction, the bottom surface of the central counter bore of the impeller locking end is at least symmetrically provided with two fourth positioning holes corresponding to the third positioning holes in the circumferential direction one by one, a compression screw, a spring and a nut positioning pin are sequentially arranged in the third positioning holes from top to bottom, when the third positioning holes and the fourth positioning holes correspond to each other in the circumferential direction one by one, the nut positioning pin is partially inserted into the fourth positioning holes, and is partially positioned in the third positioning holes, and the compression screw is pressed and abutted against the top of the nut positioning pin through the spring.
Furthermore, at least one first step portion located at the bottom is arranged in a third positioning hole of the locking nut, a columnar positioning protrusion is arranged at the bottom of the nut positioning pin, and the columnar positioning protrusion penetrates through the first step portion and is inserted into the fourth positioning hole.
Furthermore, a second step portion located above the first step portion is further arranged in a third positioning hole of the tightening nut, a columnar extending portion is arranged at the bottom of the compression screw, the columnar extending portion penetrates through the second step portion and abuts against the top of the spring, and the bottom of the spring is compressed and abuts against the top of the nut positioning pin.
Preferably, a tapered inclined surface is arranged at the bottom edge of the central hole of the locking nut, and the tapered inclined surface is used for ensuring that the pull rod and the locking nut are on the central line of the main shaft as much as possible, so that the unbalance is reduced.
Preferably, the tail end of the lock nut positioning pin is provided with a threaded hole matched with the pin puller. When the locking nut needs to be disassembled, the compression nut is screwed out, the spring is taken out, the locking nut positioning pin can be pulled out by the pin puller, and then the locking nut can be disassembled by the puller.
Preferably, the tail end of the compression nut is provided with an inner hexagonal hole matched with an inner hexagonal wrench, and the inner hexagonal wrench can be used for mounting and dismounting.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the pull rod is screwed to the same position, the pull rod boss and the main shaft are provided with the communicated positioning holes, when the pull rod is screwed to a specified position, the pull rod boss is aligned with the positioning hole on the main shaft, and the positioning pin is plugged and knocked tightly, so that the pull rod can be strictly guaranteed to be screwed to the same position as the main shaft every time.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the pull rod and the locking nut deviate from the central line when being tensioned, the inner hole edge of the abutting surface of the locking nut and the impeller is provided with the inclined surface for abutting by utilizing the characteristic of good centering of the end face tooth structure, so that the locking nut can automatically return to the central position by utilizing the inclined surface after the pull rod is tensioned, the central line of the pull rod can be reduced from deviating from the central line of the main shaft, and the increase of unbalance is reduced.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem that the locking nut is screwed to the same position, the joint surface of the impeller and the locking nut is provided with the positioning hole and the locking nut positioning pin, so that when the locking nut is screwed, the locking nut positioning pin enters the positioning hole to be locked under the action of the pressure of the spring when the locking nut positioning pin and the positioning hole are superposed, and in order to reduce the unbalance caused by the possible movement of the spring during the operation of a unit, the spring can be directly detached and the positioning pin can be directly pressed by the compression nut after the assembly is completed if necessary, so that the positioning pin cannot move.
In the end face tooth connecting structure with the positioning function between the impeller and the main shaft, in order to solve the problem of unbalance caused by a single pin hole and a single pin, the pull rod positioning pin, the locking nut positioning pin, the spring and the compression screw are symmetrically arranged, so that the problems of large unbalance amount and large removed weight caused by asymmetry can be reduced.
Compared with the prior art, the end face tooth connecting structure with the positioning function between the impeller and the main shaft has the advantages and beneficial effects that:
1. due to the adoption of the positioning pin and the positioning pin hole, the pull rod and the locking nut can be ensured to be in the same position each time when being screwed through the matching of the positioning pin and the positioning pin hole, so that the increase of unbalance caused by position change during the resetting is reduced.
2. Utilize the good centering characteristics of terminal surface tooth structure, set up the inclined plane laminating at the hole edge of lock nut and impeller binding face, like this after the pull rod is taut, lock nut utilizes the inclined plane can get back to central point automatically and put, reduces the increase of unbalance amount.
Drawings
FIG. 1 is a schematic view of an end face tooth connection structure with a positioning function between an impeller and a main shaft according to the present invention;
FIG. 2 is a partial structural view of the joint between the drawbar and the spindle;
FIG. 3 is a schematic view of the joint of the lock nut;
FIG. 4 is a schematic view of a pull rod structure;
FIG. 5 is a schematic structural view of a lock nut, wherein (a) is a 3D schematic view of 1/4 cut away, and (b) is a front view of the lock nut;
FIG. 6 is a schematic view of a lock nut locating pin;
fig. 7 is a schematic structural view of the compression nut.
Wherein the reference numerals are as follows:
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments, which are part of the present invention, are not all embodiments, and are intended to be illustrative of the present invention and should not be construed as limiting the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiments of the present invention are shown in FIGS. 1 to 7.
Fig. 1 is an overall schematic view of an end face tooth connection structure with a positioning function between an impeller and a main shaft of the present invention, and it can be seen from the figure that in the end face tooth connection structure with a positioning function between an impeller and a main shaft of the present invention, the impeller 1 and the main shaft 8 adopt an end face tooth structure for radial positioning and torque transmission, and the impeller 1 and the main shaft 8 are tightly connected through a tensioning assembly (including a pull rod 6 and a locking nut 5) to realize axial locking and positioning therebetween, wherein in the end face tooth structure, an end face tooth is provided on an end face of the main shaft 8, an end face tooth is also provided on an end face of a shaft side of the impeller 1, and the end face tooth on the end face of the main shaft and the end face tooth on the end face of the shaft side of the impeller are engaged with each other, so as to realize radial positioning and torque transmission between the impeller 1 and the main shaft 8; the tensioning assembly comprises a pull rod 6 and a locking nut 5, the pull rod 5 is a stud, a central through hole extending along the axial direction is formed in the center of the impeller 1, a central counter bore is formed in the locking end of the impeller, an internal thread hole is formed in the end face of the main shaft, one end of the pull rod 6 penetrates through the central through hole of the impeller and then is in threaded connection with the internal thread hole in the end portion of the main shaft, and the other end of the pull rod is locked and fixed with the locking nut 5 in the central counter bore of the locking end of the impeller.
In order to ensure that the locking nut 5 and the pull rod 6 can be located at the same position during assembly at each time, the pull rod 6 is provided with a pull rod positioning pin 7, and the locking nut 5 is provided with a locking nut positioning pin 2, a spring 3 and a compression screw 4. In order to make the pull rod 6 and the locking nut 5 as close to the central line as possible, a conical inclined surface is arranged at the bottom edge of the central hole of the locking nut 5. In order to reduce the unbalance and the increase of the weight during dynamic balance as much as possible, all the positioning pins, the springs and the compression screws are symmetrically arranged.
Fig. 2 is a partial schematic view of an end face tooth fitting part, an annular boss 61 is arranged in the middle of an end face tooth of the pull rod 6, the boss 61 is located at the end face tooth joint between the impeller 1 and the main shaft 8 in the axial direction, counter bores matched with the outer diameter of the boss 61 are arranged on the end face of the impeller shaft side and the end face of the main shaft, one side of the boss 61 is fitted with the counter bore of the main shaft part, a small gap is reserved between the other side of the boss 61 and the counter bore of the impeller part, and the gap between the radial outer circle and the end face tooth is also small. In order to ensure that the pull rod can be positioned at the same position when being screwed every time, the pull rod boss 61 and the end face of the main shaft 8 are respectively provided with a one-to-one corresponding positioning hole, the pull rod positioning pin 7 penetrates through the one-to-one corresponding positioning hole, and the inclined pin is adopted to ensure accurate positioning. The pull rod positioning pin 7 is an inclined pin with a large upper part and a small lower part, and correspondingly, positioning holes in the pull rod boss 61 and the end face of the main shaft 8 are inclined holes with a large upper part and a small lower part, and when the inclined pin needs to be taken down, a pin puller is adopted.
Fig. 3 is a partial schematic view of a joint portion between a lock nut 5 and an impeller 1, and it can be seen from the figure that a positioning device is also arranged on the lock nut 5, the lock nut 5 is at least symmetrically provided with two third positioning holes in the circumferential direction, the bottom surface of a central counter bore of a locking end of the impeller is at least symmetrically provided with two fourth positioning holes corresponding to the third positioning holes one by one in the circumferential direction, a compression screw 4, a spring 3 and a nut positioning pin 2 are sequentially arranged in the third positioning holes from top to bottom, when the third positioning holes correspond to the fourth positioning holes one by one in the circumferential direction, the nut positioning pin 2 is partially inserted into the fourth positioning holes and partially positioned in the third positioning holes, and the compression screw 4 is pressed and abutted against the top of the nut positioning pin 2 through the spring 3. The positioning device is arranged on the locking nut 5, and the positioning device is mainly used for ensuring that the locking nut 5 can be located at the same position every time when being locked, and positioning holes are formed in the locking nut 5 and the impeller 1. The locking nut 5 is provided with a nut positioning pin 2, a spring 3 and a compression screw 4. When the locking nut 5 is screwed to the corresponding position, the nut positioning pin 2 just enters the positioning hole on the impeller under the action of the spring 3 and the compression screw 4, so that accurate positioning is realized. Fig. 5 is a schematic structural view of the lock nut 5, wherein (a) is a 3D schematic view of 1/4 cut, and it can be seen that two steps are provided in the positioning hole 51, the first step is for preventing the positioning pin 2 from coming out of the lock nut 5, and the second step is for placing the compression nut 4 to compress the positioning pin 2. To reduce the amount of unbalance, the positioning holes 51 are arranged symmetrically. (b) The locking nut is shown in elevation and it can be seen that there is a sloping shoulder 52 on the underside of the locking nut 5. The purpose is mainly to utilize good centering effect of the end face teeth, and to ensure that the pull rod 6 and the locking nut 5 are on the central line of the main shaft as much as possible by adopting the inclined surface fitting, so that the unbalance is reduced.
Fig. 4 is a three-dimensional schematic diagram of the pull rod, compared with the traditional pull rod, a screwing platform is removed, due to the adoption of the pull rod positioning pin 7, the pull rod is not required to be ensured to be at the same position in a manual striking mode, and the manual mode is influenced by various factors and cannot be strictly ensured to be at the same position every time. The pull rod positioning pins are symmetrically arranged. As can be seen from fig. 2 and 4, the pull rod 6 is provided with an annular boss 61, the annular boss 61 is located at the end face tooth connection position between the impeller 1 and the main shaft 8 in the axial direction, and both the end face of the impeller shaft side and the end face of the main shaft are provided with counter bores matched with the outer diameter of the annular boss, so that after the impeller 1 and the main shaft 8 are locked in the axial direction, one part of the annular boss 61 is located in the counter bore of the end face of the impeller shaft side, and the other part is located in the counter bore of the end face of the main shaft; the annular boss 61 is at least symmetrically provided with two first positioning holes extending along the axial direction in the circumferential direction, the bottom of the counter bore of the end face of the main shaft is at least symmetrically provided with two second positioning holes corresponding to the first positioning holes in the circumferential direction one by one, and positioning pins penetrate through the first positioning holes and the second positioning holes corresponding to the first positioning holes one by one. When the pull rod 6 is screwed to a specified position, the pull rod boss 61 is aligned with the positioning hole on the main shaft 8, and the positioning pin is plugged and screwed tightly, so that the pull rod can be strictly screwed to the same position as the main shaft every time.
Fig. 6 is a three-dimensional structure diagram of the lock nut positioning pin 2, and the lock nut positioning pin 2 is provided with a threaded hole 21 at the tail end. When the locking nut 5 needs to be disassembled, the compression nut 5 is screwed out, the spring 3 is taken out, the locking nut positioning pin 2 can be pulled out by adopting the pin puller, and then the locking nut 5 can be disassembled by adopting the puller.
Fig. 7 is a three-position schematic view of the compression nut 4, which is provided with a socket 41 at the rear end of the compression nut 4, and which can be mounted and dismounted by a socket wrench.
The object of the present invention is fully effectively achieved by the above embodiments. Those skilled in the art will appreciate that the present invention includes, but is not limited to, what is described in the accompanying drawings and the foregoing detailed description. While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications within the spirit and scope of the appended claims.
Claims (8)
1. An end face tooth connecting structure with a positioning function between an impeller and a main shaft is characterized in that the impeller and the main shaft are axially fastened through a tensioning assembly, the tensioning assembly comprises a pull rod and a locking nut, a central through hole extending along the axial direction is formed in the center of the impeller, and one end of the pull rod penetrates through the central through hole of the impeller and then is in threaded connection with an internal thread hole in the end portion of the main shaft; end face teeth which are meshed with each other are arranged between the end face of the main shaft and the end face of the shaft side of the impeller,
the locking end of the impeller is provided with a central counter bore, the other end of the pull rod is locked and fixed with the locking nut at the central counter bore,
the pull rod is provided with an annular boss, the annular boss is axially positioned at the end face tooth joint between the impeller and the main shaft, and grooves matched with the outer diameter of the annular boss are respectively arranged on the end face of the shaft side of the impeller and the end face of the main shaft, so that after the impeller and the main shaft are axially locked, the annular boss is positioned in the groove between the end face of the shaft side of the impeller and the end face of the main shaft;
the annular boss is at least symmetrically provided with two first positioning holes extending along the axial direction in the circumferential direction, the bottom of a counter bore of the end face of the main shaft is at least symmetrically provided with two second positioning holes corresponding to the first positioning holes in the circumferential direction one by one, and pull rod positioning pins penetrate through the first positioning holes and the second positioning holes.
2. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to claim 1, wherein the pull rod positioning pin is an inclined pin with a large top and a small bottom, and accordingly, the first positioning hole and the second positioning hole are inclined holes with a large top and a small bottom.
3. An end face tooth connecting structure with a positioning function between an impeller and a main shaft according to claim 1, wherein the lock nut is provided with at least two third positioning holes symmetrically in the circumferential direction, the bottom surface of the central counter bore of the impeller lock end is provided with at least two fourth positioning holes symmetrically corresponding to the third positioning holes one by one in the circumferential direction, the third positioning holes are sequentially provided with a compression screw, a spring and a nut positioning pin from top to bottom, when the third positioning holes and the fourth positioning holes correspond to each other in the circumferential direction, the nut positioning pin is partially inserted into the fourth positioning holes and partially positioned in the third positioning holes, and the compression screw is pressed by the spring to abut against the top of the nut positioning pin.
4. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to the above claim, wherein at least a first stepped portion is provided in the third positioning hole of the lock nut, and a columnar positioning protrusion is provided at the bottom of the nut positioning pin, and the columnar positioning protrusion is inserted into the fourth positioning hole through the first stepped portion.
5. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to claim 4, wherein a second step portion located above the first step portion is further arranged in a third positioning hole of the tightening nut, a columnar extension portion is arranged at the bottom of the compression screw, the columnar extension portion penetrates through the second step portion to abut against the top of the spring, and the bottom of the spring abuts against the top of the nut positioning pin in a compression manner.
6. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to claim 1, wherein a tapered inclined surface is arranged at the bottom edge of a central hole of the lock nut, and the tapered inclined surface is used for ensuring that the pull rod and the lock nut are on the central line of the main shaft as much as possible, so that the unbalance is reduced.
7. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to claim 1, wherein the tail end of the lock nut positioning pin is provided with a threaded hole for matching with a pin puller.
8. A face-tooth connection structure with a positioning function between an impeller and a main shaft according to claim 1, wherein the tail end of the compression nut is provided with a hexagon socket hole for being matched with a hexagon socket wrench.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689233.7A CN113280000B (en) | 2021-06-22 | 2021-06-22 | End face tooth connecting structure with positioning function between impeller and main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110689233.7A CN113280000B (en) | 2021-06-22 | 2021-06-22 | End face tooth connecting structure with positioning function between impeller and main shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113280000A true CN113280000A (en) | 2021-08-20 |
| CN113280000B CN113280000B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110689233.7A Active CN113280000B (en) | 2021-06-22 | 2021-06-22 | End face tooth connecting structure with positioning function between impeller and main shaft |
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| Country | Link |
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| CN (1) | CN113280000B (en) |
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| GB1070558A (en) * | 1963-11-28 | 1967-06-01 | Flux Geraetebau Gmbh | A pump in particular for thin and medium viscosity liquids |
| CN201599258U (en) * | 2009-11-20 | 2010-10-06 | 无锡压缩机股份有限公司 | Coupling structure between impeller and high-speed rotating shaft on high-speed centrifugal compressor |
| CN102852849A (en) * | 2012-09-14 | 2013-01-02 | 西安航空动力股份有限公司 | Coupler for eliminating balance clearance of fan rotor |
| CN104373378A (en) * | 2014-09-11 | 2015-02-25 | 大连工业大学 | Semi-open type impeller and main shaft connection device and rotor of centrifugal compressor and installation method |
| CN106545520A (en) * | 2016-10-31 | 2017-03-29 | 沈阳鼓风机集团股份有限公司 | Compressor impeller and pinion shaft attachment structure and its processing method |
| CN107355419A (en) * | 2017-06-27 | 2017-11-17 | 北京航空航天大学 | A kind of high-speed magnetic levitation draught fan impeller locking mechanism |
| CN110259718A (en) * | 2019-07-29 | 2019-09-20 | 重庆江增船舶重工有限公司 | Vapour compression machine compression impellor combined type overspeed test tool and its application method |
| CN212748273U (en) * | 2020-06-30 | 2021-03-19 | 杭州兴鑫科技有限公司 | Tool for impeller overspeed test |
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2021
- 2021-06-22 CN CN202110689233.7A patent/CN113280000B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB191018349A (en) * | 1910-08-03 | 1911-06-01 | Siemens Brothers Dynamo Works | Improvements in Centrifugal Fans. |
| GB1070558A (en) * | 1963-11-28 | 1967-06-01 | Flux Geraetebau Gmbh | A pump in particular for thin and medium viscosity liquids |
| CN201599258U (en) * | 2009-11-20 | 2010-10-06 | 无锡压缩机股份有限公司 | Coupling structure between impeller and high-speed rotating shaft on high-speed centrifugal compressor |
| CN102852849A (en) * | 2012-09-14 | 2013-01-02 | 西安航空动力股份有限公司 | Coupler for eliminating balance clearance of fan rotor |
| CN104373378A (en) * | 2014-09-11 | 2015-02-25 | 大连工业大学 | Semi-open type impeller and main shaft connection device and rotor of centrifugal compressor and installation method |
| CN106545520A (en) * | 2016-10-31 | 2017-03-29 | 沈阳鼓风机集团股份有限公司 | Compressor impeller and pinion shaft attachment structure and its processing method |
| CN107355419A (en) * | 2017-06-27 | 2017-11-17 | 北京航空航天大学 | A kind of high-speed magnetic levitation draught fan impeller locking mechanism |
| CN110259718A (en) * | 2019-07-29 | 2019-09-20 | 重庆江增船舶重工有限公司 | Vapour compression machine compression impellor combined type overspeed test tool and its application method |
| CN212748273U (en) * | 2020-06-30 | 2021-03-19 | 杭州兴鑫科技有限公司 | Tool for impeller overspeed test |
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| Publication number | Publication date |
|---|---|
| CN113280000B (en) | 2022-09-16 |
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