CN216895507U

CN216895507U - Damper and vertical pump

Info

Publication number: CN216895507U
Application number: CN202220527786.2U
Authority: CN
Inventors: 郭宏恩; 杨志刚; 刘明利; 张辉仁; 王新阳
Original assignee: Shandong Nuclear Power Co Ltd
Current assignee: Shandong Nuclear Power Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-07-05
Anticipated expiration: 2032-03-11

Abstract

The utility model discloses a damper and a vertical pump, and belongs to the technical field of vibration reduction equipment. The damper comprises a mass component, a damping component and a plurality of mounting seats, wherein the mass component comprises a plurality of mass units which are stacked and fixedly connected, and the mass units are of circular ring structures; the damping assembly comprises a plurality of damping units which are arranged at equal intervals along the circumferential direction of the mass unit; the damping units comprise rubber blocks and two connecting plates, and in the plurality of damping units, the connecting plates positioned at the upper ends of the rubber blocks are fixedly connected with the mass components; the mounting seats and the damping units are arranged in a one-to-one correspondence manner; in the damping units, the connecting plates at the lower ends of the rubber blocks are fixedly connected with the corresponding mounting seats respectively. The purpose of absorbing vibration to the maximum extent can be achieved by combining different masses and different rigidities, and the absorbed vibration energy is consumed by the rubber blocks of the damping unit, so that the vibration is simply and effectively controlled.

Description

Damper and vertical pump

Technical Field

The utility model relates to the technical field of vibration reduction equipment, in particular to a damper and a vertical pump.

Background

When the rotating shaft of the vertical pump set rotates around the axis of the rotating shaft, not only can centrifugal force be generated due to uneven mass distribution caused by machining, manufacturing or assembly, but also external exciting force can be generated due to external reasons such as bottom fluid excitation. These unbalanced centrifugal forces or external excitation forces acting on the rotor and bearings can cause vibrations that result in deformation and deflection of the mechanism, which can seriously affect the performance and life of the product.

Meanwhile, because the motor is arranged at the top of the vertical pump, the characteristics of low natural frequency, large vibration response and the like of the vertical pump are determined by the structural form, and particularly when the natural frequency of the vertical pump is close to the excitation frequency of some external excitation force, structural resonance is generated, the vibration response is increased sharply, and the performance and the service life of the structure are seriously influenced.

In order to solve the problems, the structural rigidity of a pump set is generally changed in the prior art, and the excitation force is reduced by a dynamic balance method so as to reduce vibration. The disadvantages are as follows:

1. the rigidity of the pump set is changed by changing the original pump, the measures of replacing a bracket, increasing a support and even replacing a motor model are mainly included, the implementation difficulty is high, the cost is high, and the method is sometimes limited by field objective conditions and cannot be implemented on the field.

2. The problem of high vibration cannot be fundamentally solved by reducing exciting force through a dynamic balance method, but a temporary solution is adopted, so that the fault of high vibration can be possibly generated again when the working condition of the pump set is slightly changed, and huge hidden danger is brought to the stability and the reliability of the pump set.

SUMMERY OF THE UTILITY MODEL

One object of the present invention is to provide a damper capable of absorbing and dissipating vibration energy of a rotating device, thereby achieving the purpose of simply and effectively controlling vibration.

Another object of the present invention is to provide a vertical pump having an advantage of small vibration by applying the above damper.

In order to realize the purpose, the following technical scheme is provided:

in one aspect, a damper is provided, including:

the mass assembly comprises a plurality of mass units which are stacked and fixedly connected, and the mass units are of circular ring structures;

the damping assembly comprises a plurality of damping units which are arranged at equal intervals along the circumferential direction of the mass unit; the damping units comprise rubber blocks and two connecting plates, the two connecting plates are fixedly arranged at the upper ends and the lower ends of the rubber blocks respectively, and in the plurality of damping units, the connecting plates positioned at the upper ends of the rubber blocks are fixedly connected with the mass components;

the mounting seats are arranged in one-to-one correspondence with the damping units; in the plurality of damping units, the connecting plates at the lower ends of the rubber blocks are respectively and fixedly connected with the corresponding mounting seats.

As an alternative to the damper, the rubber block comprises an arc-shaped section, the centre of the arc-shaped section coinciding with the centre of the mass unit.

As an alternative to the damper, in any of the damping units, the rubber block is connected to the two connecting plates by vulcanization.

As an alternative to the damper, the damping unit is provided with 4n, n being a positive integer.

As an alternative to the damper, the plurality of mass units includes a first mass unit including four first masses that can be joined to form a circular first mass unit.

As an alternative to the damper, the plurality of mass units includes a second mass unit, and the second mass unit includes two second masses which can be joined to form a circular second mass unit.

As an alternative to the damper, the first mass units and the second mass units are alternately arranged in the stacking direction among the plurality of mass units.

As an alternative of the damper, the mass assembly further comprises a plurality of mass connecting pieces arranged at equal intervals along the circumferential direction of the mass units, and the mass connecting pieces can lock or unlock the plurality of mass units;

the first mass block is provided with a plurality of first connecting holes, and the second mass block is provided with a plurality of second connecting holes;

the first connecting holes in the four first mass blocks of the first mass unit and the second connecting holes in the two second mass blocks of the second mass unit are respectively in one-to-one correspondence with the mass connecting pieces.

As an alternative to the damper, the inner diameters of a plurality of the mass units are all equal;

the outer diameters of the mass units are all equal.

In another aspect, a vertical pump is provided, which includes a motor and the damper as described above, the motor is fixedly installed on the top of the vertical pump, and the damper is fixedly installed on the top of the motor through a plurality of installation seats.

Compared with the prior art, the utility model has the beneficial effects that:

the damper can control the total mass of the mass assembly by increasing or decreasing the number of the mass units, can control the rigidity of the damping assembly by increasing or decreasing the number of the damping units, can achieve the aim of absorbing vibration to the maximum extent by combining different masses and different rigidities, and can simply and effectively control vibration by consuming the absorbed vibration energy through the rubber blocks of the damping units; in addition, the rotary equipment is always arranged to be a cylindrical structure, and the annular mass unit can be matched with the appearance of the rotary equipment, so that the vibration reduction effect is improved.

The vertical pump has the advantage of small vibration by applying the damper.

Drawings

FIG. 1 is a schematic structural diagram of a damper according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a rubber block in an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a first mass according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a second mass according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a vertical pump according to an embodiment of the present invention.

Reference numerals:

100. a motor;

1. a mass component; 11. a mass unit; 111. a first mass block; 1111. a first connection hole; 112. a second mass block; 1121. a second connection hole; 12. a mass connection;

2. a damping assembly; 21. a damping unit; 211. a rubber block; 212. a connecting plate;

3. a mounting seat; 31. mounting a plate; 32. mounting a sheet;

4. a first connecting member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "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 or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1 to 5, the present embodiment provides a damper, which includes a mass assembly 1, a damping assembly 2, and a plurality of mounting seats 3, where the mass assembly 1 includes a plurality of mass units 11 stacked and fixedly connected, and the mass units 11 are in a circular ring structure; the damping assembly 2 comprises a plurality of damping units 21 which are arranged at equal intervals along the circumferential direction of the mass unit 11; the damping units 21 comprise rubber blocks 211 and two connecting plates 212, the two connecting plates 212 are fixedly arranged at the upper end and the lower end of the rubber blocks 211 respectively, and the connecting plates 212 positioned at the upper ends of the rubber blocks 211 in the plurality of damping units 21 are fixedly connected with the mass component 1; the plurality of mounting seats 3 and the plurality of damping units 21 are arranged in one-to-one correspondence; in the plurality of damper units 21, the connection plates 212 located at the lower end of the rubber block 211 are fixedly connected to the corresponding mount 3. In this embodiment, the damper is mainly used for damping vibration of a rotary device.

The total mass of the mass component 1 can be controlled by increasing or decreasing the number of the mass units 11, the rigidity of the damping component 2 can be controlled by increasing or decreasing the number of the damping units 21, and the purpose of absorbing vibration to the maximum extent can be achieved by combining different masses and different rigidities, and the absorbed vibration energy is consumed by the rubber blocks 211 of the damping units 21, so that the vibration can be controlled simply and effectively; in addition, the rotary equipment is always arranged to be a cylindrical structure, and the annular mass unit 11 can be matched with the appearance of the rotary equipment, so that the vibration reduction effect is improved.

Optionally, the rubber block 211 comprises an arc segment, the center of which coincides with the center of the mass unit 11. It should be noted that the rubber block 211 may be entirely arc-shaped, or may be partially arc-shaped. By such arrangement, the rubber block 211 is more fit with the appearance of the mass unit 11, and the rubber block 211 can play a role in vibration reduction.

Optionally, in any damping unit 21, the rubber block 211 is connected to the two connecting plates 212 through vulcanization, so that a connecting piece is avoided, the integrity of the rubber block 211 is not damaged, and the vibration damping effect of the rubber block 211 is not affected. In addition, the rubber block 211 and the two connecting plates 212 are connected in a vulcanization mode, so that the joint degree of the rubber block 211 and the connecting plates 212 is better, the stress of each part of the rubber block 211 is uniform, and the vibration reduction effect is better.

Alternatively, the damping unit 21 is provided with 4n, where n is a positive integer. It should be noted that the rotating device is generally provided with a rectangular housing, and in order to facilitate the connection between the damper of the present embodiment and the housing of the rotating device, four damping units 21 are provided in the present embodiment, and the four damping units 21 are respectively disposed at four corners of the top of the housing of the rotating device. In other embodiments, the number of the damping units 21 may be eight, four of which are respectively disposed at four corners of the top of the rotating device housing, and the other four of which are respectively disposed at the top of four sides of the rotating device housing. Of course, the damping unit 21 may be provided more, and is not limited herein.

Alternatively, the mounting seat 3 comprises a mounting plate 31 and a mounting plate 32 vertically connected to the bottom of the mounting plate 31, in the corresponding damping unit 21, the connecting plate 212 at the lower end of the rubber block 211 is fixedly connected to the mounting plate 31, the mounting plate 31 is also fixedly connected to the rotating equipment casing through a fastener such as a bolt, and the mounting plate 32 is used for being fixedly connected to the lifting lug of the rotating equipment through a fastener such as a bolt.

Further, the cross-sectional area of the mounting plate 31 is larger than that of the connection plate 212 to ensure that the mounting plate 31 can stably support the damping unit 21.

In this embodiment, a plurality of first connecting members 4 are disposed between the connecting plate 212 located at the lower end of the rubber block 211 and the corresponding mounting seat 3, and the first connecting members 4 can lock or unlock the connecting plate 212 located at the lower end of the rubber block 211 and the corresponding mounting seat 3. Exemplarily, the first connecting member 4 is a bolt. Specifically, the connecting plate 212 at the lower end of the rubber block 211 is fixedly connected with the corresponding mounting plate 31 of the mounting base 3 through a plurality of bolts, and the bolts are used for connection, so that the aim of facilitating the disassembly and assembly can be achieved when the damping units 21 with different rigidities are replaced, and the cost is low.

Alternatively, the inner diameters of the plurality of mass units 11 are all equal; the plurality of mass units 11 are all equal in outer diameter. So set up, the quality equipartition of controlling quality subassembly 1 more easily to optimize the damping effect, still be convenient for a plurality of quality units 11 assemble.

Optionally, the plurality of mass units 11 includes a first mass unit, the first mass unit includes four first masses 111, and the four first masses 111 can be spliced to form a circular ring-shaped first mass unit. Optionally, the plurality of mass units 11 further includes a second mass unit, and the second mass unit includes two second masses 112, and the two second masses 112 can be combined to form a circular second mass unit. Through the collocation of the quality piece of equidimension not, the total mass of control quality subassembly 1 that can be more accurate to match the rotating equipment of different models, application scope is wider, still is favorable to optimizing damping effect.

Alternatively, the first mass units and the second mass units are alternately arranged in the stacking direction among the plurality of mass units 11. So set up, can mass component 1's mass distribution more even, be favorable to optimizing the damping effect.

Optionally, the mass assembly 1 further includes a plurality of mass connecting members 12 disposed at equal intervals along the circumferential direction of the mass unit 11, and the mass connecting members 12 can lock or unlock the plurality of mass units 11. The mass connecting pieces 12 enable the mass units 11 to be detachably connected, and the mass units 11 with different masses can be conveniently replaced.

Furthermore, a plurality of first connection holes 1111 are formed in the first mass block 111, and a plurality of second connection holes 1121 are formed in the second mass block 112; the first connection holes 1111 of the four first mass blocks 111 of the first mass unit and the second connection holes 1121 of the two second mass blocks 112 of the second mass unit are respectively and correspondingly arranged with the plurality of mass connection members 12, so that the mass connection members 12 can be inserted into the corresponding first connection holes 1111 and second connection holes 1121, thereby achieving the purpose of fixedly connecting the plurality of mass units 11 to form a whole.

Illustratively, the mass connection member 12 is a bolt and a nut, the bolt passes through the corresponding first connection hole 1111 and second connection hole 1121 of the plurality of mass units 11 from the top of the mass assembly 1 downwards, and is screwed with the nut located at the bottom of the mass assembly 1 to fixedly connect the plurality of mass units 11, so that the operation is convenient and the cost is low.

In this embodiment, the mass connecting member 12 at the position corresponding to the damping component 2 may not only fixedly connect the plurality of mass units 11, but also fixedly connect the damping component 2 with the plurality of mass units 11, in other words, the mass connecting member 12 passes through the plurality of mass units 11 and then is connected with the damping component 2, so that it is avoided to add a connecting member between the mass component 1 and the damping component 2, and further, the influence on the performance of the mass component 1 and the damping component 2 may be reduced. Illustratively, the mass coupler 12 at a position corresponding to the damping unit 2 may be a bolt and a nut, but the bolt has a longer length so that the bolt can pass through the plurality of mass units 11 and the coupling plate 212 at the upper end of the rubber block 211 to be threadedly coupled with the nut.

In other embodiments, it can also be arranged that: a plurality of second connecting pieces are arranged between the connecting plate 212 positioned at the upper end of the rubber block 211 and the mass component 1, and the second connecting pieces can lock or unlock the connecting plate 212 positioned at the upper end of the rubber block 211 and the mass component 1. Illustratively, the second connector is a bolt. Specifically, the connecting plate 212 positioned at the upper end of the rubber block 211 is fixedly connected with the mass assembly 1 through a plurality of bolts, and is connected through bolts, so that the purpose of facilitating disassembly and assembly can be achieved when the mass assembly 1 with different masses is replaced, and the cost is low.

As shown in fig. 5 and fig. 1, the present embodiment further provides a vertical pump, which includes a motor 100 and the damper as described above, the motor 100 is fixedly disposed on the top of the vertical pump, and the damper is fixedly disposed on the top of the motor 100 through a plurality of mounting seats 3. The vertical pump of the embodiment has the advantage of small vibration by applying the damper.

It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A damper, comprising:

the mass assembly (1) comprises a plurality of mass units (11) which are stacked and fixedly connected, wherein the mass units (11) are of circular ring structures;

the damping assembly (2) comprises a plurality of damping units (21) which are arranged at equal intervals along the circumferential direction of the mass unit (11); the damping units (21) comprise rubber blocks (211) and two connecting plates (212), the two connecting plates (212) are fixedly arranged at the upper end and the lower end of each rubber block (211), and in the plurality of damping units (21), the connecting plates (212) positioned at the upper ends of the rubber blocks (211) are fixedly connected with the mass component (1);

the mounting seats (3) are arranged in one-to-one correspondence with the damping units (21); in the plurality of damping units (21), the connecting plates (212) positioned at the lower end of the rubber block (211) are respectively and fixedly connected with the corresponding mounting seats (3).

2. Damper according to claim 1, characterized in that the rubber block (211) comprises an arc-shaped segment, the centre of which coincides with the centre of the mass unit (11).

3. Damper according to claim 1, characterized in that in any of said damping units (21) said rubber block (211) is connected to both said connection plates (212) by vulcanization.

4. Damper according to claim 1, characterized in that the damping unit (21) is provided with 4n, n being a positive integer.

5. A damper according to claim 1, characterized in that the plurality of mass units (11) comprises a first mass unit comprising four first masses (111), the four first masses (111) being joinable to form a circular ring-shaped first mass unit.

6. A damper according to claim 5, characterized in that the plurality of mass units (11) comprises a second mass unit comprising two second masses (112), the two second masses (112) being splittable to form a circular second mass unit.

7. The damper according to claim 6, characterized in that the first mass units and the second mass units are alternately arranged in a stacking direction among a plurality of the mass units (11).

8. A damper according to claim 6, wherein said mass assembly (1) further comprises a plurality of mass connecting members (12) arranged at equal intervals in a circumferential direction of said mass units (11), said mass connecting members (12) being capable of locking or unlocking a plurality of said mass units (11);

a plurality of first connecting holes (1111) are formed in the first mass block (111), and a plurality of second connecting holes (1121) are formed in the second mass block (112);

the first connecting holes (1111) on the four first mass blocks (111) of the first mass unit and the second connecting holes (1121) on the two second mass blocks (112) of the second mass unit are all arranged in one-to-one correspondence with the mass connecting pieces (12).

9. A damper according to claim 1, wherein the plurality of mass units (11) are all equal in inner diameter;

the outer diameters of the mass units (11) are all equal.

10. Vertical pump, characterized in that it comprises an electric motor (100) and a damper according to any one of claims 1 to 9, said electric motor (100) being fixed to the top of said vertical pump, said damper being fixedly mounted to the top of said electric motor (100) by means of a plurality of said mounting seats (3).