CN214661630U

CN214661630U - Buffer stator impeller

Info

Publication number: CN214661630U
Application number: CN202120053101.0U
Authority: CN
Inventors: 安丰田; 黄俊刚; 李怀俊; 陈建杰; 梁永利; 李丹妮
Original assignee: Guangdong Communications Polytechnic
Current assignee: Guangdong Communications Polytechnic
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-11-09
Anticipated expiration: 2031-01-08

Abstract

The utility model discloses a buffer stator impeller relates to buffer technical field. The damper stator impeller includes: an impeller body; and the blades are vertically installed on the impeller body and comprise oil inlet blades and non-oil inlet blades, the oil inlet blades are uniformly distributed on the impeller body, the oil inlet blades are provided with oil inlet flow passages, and the impeller body is provided with oil return flow passages. The blades of the buffer stator impeller are vertically arranged on the impeller body, so that the problems of complex structure, difficult manufacture and high cost of the buffer stator impeller are effectively solved. After the mechanism is provided with the buffer, the problem of thermal friction failure caused by long-time continuous use of a friction braking device is solved, the safety of long-time speed reduction of the mechanism is greatly improved, the comfort and the operation flexibility of the mechanism are improved, and the economical efficiency of speed reduction braking of the mechanism is improved. Meanwhile, the method has the advantages of low cost, high energy dissipation efficiency and wide application prospect.

Description

Buffer stator impeller

Technical Field

The utility model relates to a buffer technical field, in particular to buffer stator impeller.

Background

The buffer is an auxiliary braking device, and is essentially a rotary damping device, wherein a rotor impeller is used for driving oil to impact with a stator impeller to generate reverse vortex torque, kinetic energy of a rotating shaft is converted into heat energy of the oil, and then the mechanism is decelerated. The working medium of the buffer is oil liquid, and the driving medium is compressed air.

The prior known buffer stator impeller types comprise a closed inclined blade type, an open straight blade type and an open forward inclined blade type. Compared with the open straight blade type impeller and the open forward-inclined blade type impeller, the closed inclined blade type impeller has the advantage of high energy dissipation efficiency, but has a complex structure and is difficult to manufacture.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the embodiment of the utility model provides a buffer stator impeller solves the problem that current buffer made the difficulty.

According to the utility model discloses buffer stator impeller, include: an impeller body; and the blades are vertically installed on the impeller body and comprise oil inlet blades and non-oil inlet blades, the oil inlet blades are uniformly distributed on the impeller body, the oil inlet blades are provided with oil inlet flow passages, and the impeller body is provided with oil return flow passages.

According to an embodiment of the first aspect of the present invention, the blade is perpendicular to the end surface of the impeller body.

According to an embodiment of the first aspect of the invention, the profile of the blade comprises a curve or a straight line.

According to the utility model discloses an embodiment of first aspect, the blade quantity is 20 ~ 60.

According to the utility model discloses the embodiment of the first aspect, oil feed runner quantity is 4 ~ 20.

According to the utility model discloses the embodiment of the first aspect, oil return runner quantity is 4 ~ 40.

According to the utility model discloses the first aspect embodiment, the blade still includes exhaust vane, exhaust vane is provided with the exhaust runner.

According to the utility model discloses the embodiment of first aspect, exhaust vane is 1, exhaust vane installs one of them oil feed blade's position.

According to the utility model discloses first aspect embodiment, buffer stator impeller is closed buffer stator impeller.

According to the utility model discloses the embodiment of the first aspect, the oil return runner sets up perpendicularly on the impeller body.

According to the utility model discloses the buffer of second aspect embodiment has above-mentioned buffer stator impeller, the buffer still includes the rotor wheel, the rotor wheel with buffer stator impeller matches.

Based on the technical scheme, the embodiment of the utility model provides a following beneficial effect has at least: the blades of the buffer stator impeller are vertically arranged on the impeller body, so that the problems of complex structure, difficult manufacture and high cost of the buffer stator impeller are effectively solved. After the buffer is installed on the mechanism, when the mechanism decelerates for a long time, the use of a conventional friction braking device can be avoided, the problem of thermal friction failure caused by long-time continuous use of the friction braking device is solved, the safety of the mechanism decelerating for a long time is greatly improved, the comfort and the operation flexibility of the mechanism are improved, the fatigue strength of an operator is reduced, the braking noise is reduced, and the deceleration braking economy of the mechanism is improved. Meanwhile, the method has the advantages of low cost, high energy dissipation efficiency and wide application prospect.

Drawings

The present invention will be further described with reference to the accompanying drawings and examples;

fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic top view of an embodiment of the invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic view of a rotor wheel structure.

Reference numerals: the structure comprises a stator impeller 10, a rotor impeller 20, an oil inlet blade 110, a non-oil inlet blade 120, an exhaust blade 130, an oil inlet flow passage 100, an oil return flow passage 200 and an exhaust flow passage 300.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does 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, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

The utility model discloses buffer stator impeller that the embodiment of the first aspect provided has overcome the shortcoming that current closed slope blade type impeller structure is complicated, the manufacturing difficulty, has overcome open straight blade type and open the defect that the blade type impeller energy dissipation is inefficient that leans forward simultaneously.

Referring to fig. 1 to 3, a damper stator impeller 10 according to an embodiment of the present invention includes an impeller body and blades.

Specifically, the blades are vertically installed on the impeller body, the blades include oil inlet blades 110 and non-oil inlet blades 120, the oil inlet blades 110 are uniformly distributed on the impeller body, the oil inlet blades 110 are provided with oil inlet flow passages 100, and the impeller body is provided with an oil return flow passage 200. The blades of the buffer stator impeller 10 are vertically arranged on the impeller body, so that the problems of complex structure, difficult manufacture and high cost of the buffer stator impeller 10 are effectively solved. After the buffer is installed on the mechanism, when the mechanism decelerates for a long time, the use of a conventional friction braking device can be avoided, the problem of thermal friction failure caused by long-time continuous use of the friction braking device is solved, the safety of the mechanism decelerating for a long time is greatly improved, the comfort and the operation flexibility of the mechanism are improved, the fatigue strength of an operator is reduced, the braking noise is reduced, and the deceleration braking economy of the mechanism is improved. Meanwhile, the method has the advantages of low cost, high energy dissipation efficiency and wide application prospect.

In an embodiment of the present invention, referring to fig. 1 and 4, the impeller body is ring-shaped, and the impeller body has grooves arranged along a circumference. The groove of the impeller body and any two adjacent blades jointly form a working chamber of the stator impeller. In some embodiments, the groove is semi-circular in cross-section and the working oil forms a cylindrical or crowned vortex within the working chamber.

The utility model discloses stator impeller 10 during operation, high-speed rotatory rotor impeller acts on momentum square M of working fluid₁The working oil is driven to rotate around the shaft. At the same time, the working oil follows the bladeThe curved surface of the inner cavity does rotary motion and throws towards the stator impeller 10, when the working oil throws towards the stator impeller 10, the oil impacts the blades of the stator impeller 10, and the rotor impeller 20 acts on the momentum moment M of the working oil₁To the stator impeller 10. At the same time, the stationary stator vane wheel 10 also produces a moment of momentum M acting in the opposite direction on the oil₂When the working oil flows out of the stator impeller 10 and flows into the rotor impeller 20, M is also added₂And the torque is transmitted to the rotor impeller to form a resistance torque to the rotor impeller and block the rotation of the rotor impeller 20, so that the buffer effect on the rotor impeller 20 is realized. Because the working oil does not receive other additional external force in the circulating flow of the working cavities of the stator impeller 10 and the rotor impeller 20, according to the mechanical balance principle, the momentum moment relation of the oil thrown to the stator impeller 10 and the oil flowing to the rotor impeller 10 satisfies the following formula: m₁＝-M₂。

It should be noted that the damper stator vane 10 according to the embodiment of the present invention is a closed damper stator vane 10. The closed type buffer stator impeller 10 has high energy dissipation efficiency, and is beneficial to shortening the braking time and improving the operation flexibility and the use comfort of the buffer.

In the above embodiments, the vanes are perpendicular to the end face of the impeller body. All the blades of the buffer stator impeller 10 are perpendicular to the end face of the impeller body and are vertically arranged in the groove of the impeller body, so that the manufacturing of an impeller body mold is facilitated, the manufacturing process of the stator impeller 10 is simplified, and the quality of the impeller body is improved.

The profile of the blade comprises a curved line or a straight line. Different blade profiles affect the flow of working oil within the damper stator vane 10 and, in turn, the mechanical properties of the damper stator vane 10. In this embodiment, the profile of the blade is curved, as shown in FIG. 2. After the working oil flows into the stator impeller 10 from the rotor impeller 20, the working oil forms a drum-shaped or spherical vortex in the working chamber of the stator impeller 10, and the corresponding moment of momentum is increased. When the working oil flows from the stator impeller 10 to the rotor impeller 20, the resistance torque generated to the rotor impeller 20 is also larger, and the energy dissipation efficiency in the damper is also higher. It is understood that the profile of the vane needs to be determined according to the actual application environment and the mechanical model, such as the rotation speed of the rotor wheel 20.

In some embodiments, the number of blades is 20 to 60. The more the number of the blades is, the more the working chambers formed in the stator impeller 10 are, and the more the working oil in the stator impeller 10 is fully utilized, which is more beneficial to fully utilizing the space of the stator impeller 10 and improving the energy dissipation efficiency. It should be understood that the number of the blades needs to be adjusted appropriately according to the rotation speed of the rotor wheel 20 and different application scenarios, such as adjusting the number of the blades to 30 or 50. Generally, the higher the rotational speed of the rotor wheel 20, the corresponding reduction in the number of blades is possible.

The number of the oil inlet flow passages 100 corresponds to the number of the vanes. In the above embodiment, the number of the oil inlet flow passages 100 is 4-20. Correspondingly, the number of the oil return channels 200 is 4 to 40. In the process that the rotor impeller 20 hits the working oil to the stator impeller 10, along with generating a large amount of heat, the large amount of heat is absorbed by the working oil, and the temperature of the working oil rapidly rises, which may lead to the reduction of the energy dissipation efficiency in the buffer. At this moment, set up the oil feed runner 100 and the oil return runner 200 of sufficient quantity, guarantee the cooling system high-speed circulation of working fluid, the effectual buffer that gives dispels the heat the cooling, make the buffer can keep efficient energy dissipation and the long-time continuous work.

The vane further includes an exhaust vane 130, and the exhaust vane 130 is provided with an exhaust flow passage 300. In the present embodiment, the number of the exhaust vanes 130 is 1, and the exhaust vanes 130 are installed at the position of one of the oil inlet vanes 110. The exhaust flow passage 300 serves to exhaust gas generated in the buffer while maintaining a pressure balance between the inside and the outside of the buffer.

The oil return flow passage 200 is vertically provided on the impeller body. The working oil does vortex motion in the cavity of the stator impeller 10, and the arrangement of the oil return channel avoids destroying the vortex motion, and the working oil can be quickly discharged out of the working cavity, so that the high-speed circulation of the heat dissipation system of the working oil is ensured.

The utility model discloses buffer of second aspect embodiment has above-mentioned buffer stator impeller10, the damper further comprises a rotor wheel 20, the rotor wheel 20 mating with the stator wheel 10, as shown in fig. 5. Within the working chamber of the damper, the rotor wheel 20 rotates with the drive shaft. When the buffer works, compressed gas is pumped into the buffer oil pool shell, and the compressed gas presses working oil of the buffer into the working cavity. The rotor impeller 20 rotates at a high speed along with the transmission shaft, the working oil is beaten on the stator impeller 10, and the stator impeller 10 generates a reaction force, namely a resisting moment M, on the rotor impeller 20₂And further plays a role of buffering. In the working process of the buffer, a large amount of heat energy is generated and absorbed by working oil, and the working oil cooling system enables the working oil to be at a reasonable working temperature, so that the buffer can be continuously used for a long time.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A damper stator impeller, comprising:

an impeller body; and

the blade, upright install on the impeller body, the blade includes oil feed blade and non-oil feed blade, oil feed blade evenly distributed is in on the impeller body, oil feed blade is provided with the oil feed runner, the impeller body is provided with the oil return runner.

2. The snubber stator impeller of claim 1, wherein: the blades are perpendicular to the end face of the impeller body.

3. The snubber stator impeller of claim 1, wherein: the profile of the blade comprises a curved line or a straight line.

4. The snubber stator impeller of claim 1, wherein: the number of the blades is 20-60.

5. The snubber stator impeller of claim 4, wherein: the number of the oil inlet flow passages is 4-20.

6. The snubber stator impeller of claim 5, wherein: the number of the oil return channels is 4-40.

7. The snubber stator impeller of claim 1, wherein: the blade also comprises an exhaust blade, and the exhaust blade is provided with an exhaust runner.

8. The snubber stator impeller of claim 7, wherein: the exhaust blade is 1, the exhaust blade is installed in one of them oil inlet blade's position.

9. The snubber stator impeller of claim 1, wherein: the buffer stator impeller is a closed buffer stator impeller.

10. A buffer, characterized by: the damper stator impeller of any one of claims 1 to 9, said damper further comprising a rotor impeller, said rotor impeller mating with said damper stator impeller.