CN214748627U - Online dynamic balance structure of gear box type turbine - Google Patents
Online dynamic balance structure of gear box type turbine Download PDFInfo
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- CN214748627U CN214748627U CN202121224614.XU CN202121224614U CN214748627U CN 214748627 U CN214748627 U CN 214748627U CN 202121224614 U CN202121224614 U CN 202121224614U CN 214748627 U CN214748627 U CN 214748627U
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- volute
- window
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Abstract
The utility model provides a pair of online dynamic balance structure of gear box type turbine, include: the side wall of the gear box body is provided with a turbine volute; the gear on the rotor shaft is arranged in the accommodating cavity of the box body, and the outward extending part of the rotor shaft is arranged in the volute; the movable impeller is connected with the rotor shaft for rotation and arranged in the volute; wherein, the volute casing is seted up the window on the one side towards the box, and the window is relative with the wheel face of movable vane. The utility model can obtain the weighting or de-weighting position of the movable impeller according to the vibration data measured by the online dynamic balance test system, and carry out the counterweight operation on the corresponding position on the movable impeller through the window; the movable impeller and the rotor shaft do not need to be disassembled and assembled for the second time, and the comprehensive influence of the factors such as impeller thermal expansion in actual operation, rotor shaft deformation caused by centrifugal force and aerodynamic force, aerodynamic cross rigidity generated by nonuniform gaps between impeller blade tops and a rotor shaft seal, airflow excitation and the like on the rotor shaft dynamic characteristics can be taken into account.
Description
Technical Field
The utility model relates to an impeller machine technical field, concretely relates to online dynamic balance structure of gear box type turbine.
Background
The internal rotor of the gear box type turbine is generally high in rotating speed, and the rotor is easy to cause impeller abrasion, collision and scaling in the operation process, so that the dynamic balance of the rotor is influenced, the rotor is further vibrated, and the abrasion of parts such as a bearing, a shaft seal and the like is accelerated, so that the service life and the efficiency of the turbine are reduced.
At present, when the dynamic balance of a rotor is adjusted, a rotor impeller needs to be detached from a main shaft, and then the rotor impeller needs to be weighted and removed. Each time of assembling and disassembling the impeller and the main shaft, a large amount of time and cost are spent, the production efficiency is influenced, and the dynamic balance precision of the rotor is reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art and adjusting rotor impeller through dismantling the mode, leads to the decline of rotor dynamic balance precision, the lower defect of efficiency to an online dynamic balance structure of gear box type turbine and have its power equipment are provided.
In order to solve the technical problem, the utility model provides an online dynamic balance structure of gear box type turbine, include:
the side wall of the gear box body is provided with a turbine volute;
the gear on the rotor shaft is arranged in the accommodating cavity of the box body, and the outward extending part of the rotor shaft extends into the volute;
the movable impeller is connected with the rotor shaft for rotation and arranged in the volute;
wherein, a window is arranged on one side of the turbine volute facing the box body, and the window is opposite to the wheel surface of the movable impeller.
Preferably, the window upper cover is provided with a detachable pressing cover.
Preferably, an annular first counterweight groove is formed in the wheel surface of the movable impeller, the first counterweight groove and the movable impeller are coaxially arranged, and the first counterweight groove is opposite to the window in rotation.
Preferably, the window is of a fan-shaped structure and is arranged concentrically with the movable impeller.
Preferably, a spacing space is formed between the box body and the turbine volute, the rotor shaft is provided with a measured part exposed in the spacing space, and the measured part is provided with a mark.
Preferably, the measured portion of the rotor shaft is provided with a second counterweight groove.
Preferably, the rotor shaft is rotatably connected within the turbine volute by a gas seal.
Preferably, the accommodating cavity of the box body is further provided with a driven shaft which is rotatably arranged, the rotor shaft is provided with a gear part which is positioned in the accommodating cavity of the box body, and the driven shaft is meshed with the gear part of the rotor shaft through a transmission gear.
The utility model discloses technical scheme has following advantage:
1. the utility model provides an online dynamic balance structure of a gear box type turbine, which can obtain the weighting or weight removing position of a movable impeller according to the vibration data measured by an online dynamic balance test system, and carry out weight balancing operation on the corresponding position on the movable impeller through a window; the online high-speed dynamic balance adjustment of an online dynamic balance structure of the gearbox type turbine can be realized through the window, and the comprehensive influence of comprehensive factors such as rotor shaft dynamic characteristics caused by thermal expansion of the movable impeller, centrifugal force and aerodynamic force, bearing seat supporting rigidity, aerodynamic cross rigidity generated by uneven gap between the movable impeller top and the rotor shaft seal, airflow excitation and the like on the rotor shaft in actual operation can be taken into account; the movable impeller and the rotor shaft do not need to be disassembled and assembled for the second time, so that a large amount of maintenance time and cost are saved, and the influence of repeated disassembly and assembly on the dynamic balance precision is eliminated.
2. The utility model provides an online dynamic balance structure of gear box type turbine, at online high-speed dynamic balance adjustment in-process, the gland carries out the shutoff to the window, gets rid of external factors to the influence of dynamic balance.
3. The utility model provides an online dynamic balance structure of gear box type turbine, the dismouting of balancing weight on the movable vane wheel of being convenient for is arranged in first balancing weight groove.
4. The utility model provides an online dynamic balance structure of gear box type turbine, window be with the coaxial fan-shaped structure that sets up of movable vane wheel, this fan-shaped structure is unanimous with first counter weight groove radian, make the operable space of window present the maximize.
5. The utility model provides an online dynamic balance structure of gear box type turbine, the epaxial mark of rotor is as the dynamic balance key looks, and the rotor shaft rotates with movable vane synchronization, the dynamic balance data of being convenient for to survey, look for and confirm aggravate or the heavy position of going on the movable vane wheel.
6. The utility model provides an online dynamic balance structure of gear box type turbine adds the weight or subtracts the weight through weighing at the second counter weight inslot, assists the dynamic balance adjustment of rotor shaft.
7. The utility model provides an online dynamic balance structure of gear box type turbine, rotor shaft pass through the atmoseal piece and are connected with the spiral case gas tightness, seal the inlet and outlet department of spiral case again, are convenient for carry out the vacuum test to the online dynamic balance structure of gear box type turbine, do not need expensive vacuum storehouse.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an online dynamic balance structure of a gear box type turbine provided in the present invention.
FIG. 2 is a schematic view of a position relationship between a window and a movable impeller.
FIG. 3 is a diagram illustrating a window position relationship.
Description of reference numerals:
1. a gear housing; 2. a rotor shaft; 3. a movable impeller; 4. a turbine volute; 5. a driven shaft; 6. a transmission gear; 7. an air seal member; 8. a pull rod; 9. locking the nut; 10. a window; 11. a gland; 12. a first counterweight groove; 13. a second counterweight groove; 14. a volute inlet; 15. a volute exhaust port.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
The present embodiment provides an online dynamic balance structure of a gearbox-type turbine, including: gear box 1, rotor shaft 2, movable vane wheel 3, turbine volute 4 and driven shaft 5.
As shown in fig. 1, the gear housing 1 has a receiving chamber therein, and the turbine volute 4 is connected to a right side wall of the gear housing 1. The driven shaft 5 vertically penetrates through the accommodating cavity and is rotatably connected with the side wall of the gear box body 1 through a bearing. The rotor shaft 2 and the driven shaft 5 are arranged in parallel, and the rotor shaft 2 vertically penetrates through the containing cavity and is rotationally connected with the side wall of the gear box body 1 through a bearing. The rotor shaft 2 is a gear shaft, and a gear is arranged at the middle position of the gear shaft; the middle part of the driven shaft 5 is sleeved with a transmission gear 6, and the transmission gear 6 is meshed with the gear on the rotor shaft 2 to enable the driven shaft 5 and the rotor shaft 2 to synchronously rotate.
As shown in fig. 2, a portion of the rotor shaft 2 extends out of the gear housing 1 and is rotatably connected with the turbine volute 4 through an air seal 7, and the air seal 7 isolates a cavity of the turbine volute 4 from the external environment; a pull rod 8 is connected to one end of the rotor shaft 2, which faces the impeller volute 4, and the pull rod 8 vertically extends into the impeller volute 4; the movable impeller 3 is sleeved on the pull rod 8, one end of the movable impeller 3 is abutted to the rotor shaft 2, and the other end of the movable impeller is abutted to a locking nut 9 on the pull rod 8.
As shown in fig. 2 and 3, a window 10 is formed on one side of the turbine volute 4 facing the gear box 1, and the window 10 is arranged opposite to the wheel surface of the movable impeller 3; the window 10 is of a fan-shaped structure, the fan-shaped structure and the movable impeller 3 are coaxially arranged, and the corners of the window 10 are subjected to rounding treatment; wherein, the gland 11 is detachably covered on the window 10 by screws. An annular first counterweight groove 12 is formed in the wheel surface of the movable impeller 3, the first counterweight groove 12 is coaxially arranged with the movable impeller 3, and the first counterweight groove 12 is opposite to the window 10 in rotation; through said window 10, weighting and de-weighting operations are performed in correspondence of the first counterweight groove 12, to guarantee the dynamic balance of the rotor shaft 2. The first counterweight groove 12 is not larger than 4mm away from the inner side wall of the turbine volute 4, so that the counterweight block is prevented from being inadvertently dropped into the turbine volute 4 during counterweight operation.
As shown in fig. 2, a space is provided between the gear housing 1 and the turbine volute 4, the rotor shaft 2 has a measured portion exposed in the space, and the measured portion is provided with a mark; here, the label is a reflective label attached to the measured portion, and the measured portion serves as a dynamic balance key phase. The measured portion of the rotor shaft 2 is provided with a second weight groove 13, and the dynamic balance adjustment of the rotor shaft 2 can be assisted by performing a weight increasing or weight reducing operation in the second weight groove 13.
The online dynamic balance test system analyzes the weighting or de-weighting position on the movable impeller 3 through the light reflection mark and the vibration data on the rotor shaft 2, technicians complete the counterweight operation on the movable impeller 3 through the window 10, namely online high-speed dynamic balance adjustment of the online dynamic balance structure of the gear box type turbine can be realized through the window 10, the online high-speed dynamic balance test system is quick, simple and convenient and good in timeliness, and the online high-speed dynamic balance test system can account for the comprehensive influence of comprehensive factors such as impeller thermal expansion in actual operation, rotor shaft 2 deformation caused by centrifugal force and aerodynamic force, bearing seat support rigidity, aerodynamic cross rigidity generated by the uneven gap between the impeller blade top and the rotor shaft 2 shaft seal, airflow excitation and the like on the dynamic characteristic of the rotor shaft 2; secondary disassembly and assembly are not needed between the movable impeller 3 and the rotor shaft 2, and the influence of repeated disassembly and assembly on dynamic balance precision is eliminated.
The volute air inlet 14 and the volute air outlet 15 of the turbine volute 4 are plugged and connected with a vacuum pumping pipeline, so that the movable impeller 3 is ensured to be subjected to online dynamic balance test under the conditions of high vacuum degree in the turbine volute 4 and high rotating speed driven by the rotor shaft 2, and expensive vacuum bins, high-speed dynamic balance equipment and auxiliary tool tools are not required.
The on-line dynamic balance structure of the gear box type turbine in the embodiment can be applied to equipment such as a compressor, a blower, an expander and the like.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.
Claims (8)
1. An on-line dynamic balancing structure for a gearbox-type turbine, comprising:
the side wall of the gear box body (1) is provided with a turbine volute (4);
the gear on the rotor shaft (2) is arranged in the accommodating cavity of the box body (1), and the outward extending part of the rotor shaft (2) extends into the volute (4);
the movable impeller (3) is connected with the rotor shaft (2) for rotation and arranged in the turbine volute (4);
a window (10) is formed in one side, facing the box body (1), of the turbine volute (4), and the window (10) is opposite to the wheel surface of the movable impeller (3).
2. Gearbox turbine in-line dynamic balancing arrangement according to claim 1, characterized in that the window (10) is covered with a removable cover (11).
3. The online dynamic balance structure of the gearbox type turbine as recited in claim 1, wherein the rotor blade (3) has an annular first counterweight groove (12) formed on the surface thereof, the first counterweight groove (12) is coaxially disposed with the rotor blade (3), and the first counterweight groove (12) is rotationally opposite to the window (10).
4. The on-line dynamic balancing structure of a gearbox turbine according to claim 3, characterized in that the viewing window (10) is a fan-shaped structure and is arranged concentrically with the moving impeller (3).
5. The on-line dynamic balancing structure of a gearbox-type turbine according to claim 1, wherein a space is provided between the casing (1) and the turbine volute (4), the rotor shaft (2) has a measured portion exposed in the space, and the measured portion is provided with a mark.
6. The on-line dynamic balance structure of a gearbox-type turbine as claimed in claim 5, wherein a second counterweight groove (13) is formed on a measured portion of the rotor shaft (2).
7. A gearbox turbine in-line dynamic balancing arrangement according to claim 1, characterized in that the rotor shaft (2) is rotationally connected inside the turbine volute (4) by means of a gas seal (7).
8. An online dynamic balance structure of a gear box type turbine according to claim 1, characterized in that the accommodating cavity of the box body (1) is further provided with a driven shaft (5) which is rotatably arranged, the rotor shaft (2) is provided with a gear part which is positioned in the accommodating cavity of the box body (1), and the driven shaft (5) is meshed with the gear part of the rotor shaft (2) through a transmission gear (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224614.XU CN214748627U (en) | 2021-06-01 | 2021-06-01 | Online dynamic balance structure of gear box type turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121224614.XU CN214748627U (en) | 2021-06-01 | 2021-06-01 | Online dynamic balance structure of gear box type turbine |
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| Publication Number | Publication Date |
|---|---|
| CN214748627U true CN214748627U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121224614.XU Active CN214748627U (en) | 2021-06-01 | 2021-06-01 | Online dynamic balance structure of gear box type turbine |
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| Country | Link |
|---|---|
| CN (1) | CN214748627U (en) |
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2021
- 2021-06-01 CN CN202121224614.XU patent/CN214748627U/en active Active
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