CN108528631B - Five-bucket stacked pump set vibration isolation base for ship - Google Patents

Five-bucket stacked pump set vibration isolation base for ship Download PDF

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Publication number
CN108528631B
CN108528631B CN201810498132.XA CN201810498132A CN108528631B CN 108528631 B CN108528631 B CN 108528631B CN 201810498132 A CN201810498132 A CN 201810498132A CN 108528631 B CN108528631 B CN 108528631B
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bucket
port
connecting plate
middle bucket
fixedly connected
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CN108528631A (en
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林铛
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Wuhan Mekand Equipment Co ltd
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Wuhan Mekand Equipment Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0081Vibration isolation or damping elements or arrangements, e.g. elastic support of deck-houses
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/001Noise damping
    • F04B53/003Noise damping by damping supports

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Rotary Pumps (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention discloses a five-bucket stacked ship pump set vibration isolation base, which comprises a pump set base plate, connecting plates, a retainer, a plurality of stiffening ribs, a body base plate and five buckets, wherein the five buckets comprise an outer bucket, an inner bucket, an outer middle bucket, a middle bucket and an inner middle bucket, and five layers of stacked and fixedly connected into a whole from inside to outside, and the five layers of stacked and connected into a whole with the pump set. The plurality of frequency modulation holes are arranged on the inner side surface and the outer side surface of the five drawers, so that the vibration transmission path is changed, and the bus bars of the connected frustum rings and the edge lines of the connected frustum rings are intersected at an acute angle to repeatedly change the size and the direction of vibration stress, so that the vibration is effectively attenuated. The invention reduces the vibration of the pump set and better reduces the vibration influence of the environment and other equipment vibration on the bearing pump set. The invention can reduce the vibration noise by more than 9-12 dB, and can be applied to land and vehicles besides ships; and good social and economic benefits are obtained.

Description

Five-bucket stacked pump set vibration isolation base for ship
Technical Field
The invention relates to a ship pump set base, in particular to a multi-bucket stacking type ship pump set base with a vibration isolation function, and belongs to the technical field of ship vibration reduction.
Background
The marine pump set is used for performing mission tasks for ships, and people can supply and convey various fluids continuously in normal life, such as fuel oil, lubricating oil, cooling water and air for a host machine and a secondary machine; providing the deck machinery with pressurized liquid and compressed air; supplying water and air to the boiler; providing people with fresh water, fresh air, cool air and warm air; fire water, ballast water, water transfer and drainage … …, etc. are provided for vessel safety. However, because the pump set is a fluid conveying movement machine, large mechanical vibration and noise exist, and the environments of workplaces and mechanical places are bad due to the vibration and the noise, the pump set is influenced and damaged, other equipment is influenced and damaged, physical and psychological damage is also caused to crews, and when serious, the ship cannot normally complete mission tasks, and the stealth of the military ship is particularly unfavorable, so that the combat capability of the combat ship is severely restricted. In view of this, the current technical field of ship vibration reduction is mainly to reduce vibration and noise from the following two aspects, namely, to improve the structural design of a pump set (mainly a pump and a prime motor); secondly, the manufacturing precision of the pump set is improved; and thirdly, a shock absorber is additionally arranged between the pump set and the mounting base. However, the first and second methods do not prevent environmental and other equipment vibrations from affecting the pump stack; the third method is that the damper gradually reduces the damping efficiency as the service time is prolonged. In view of the above, a new vibration isolation structure is needed to reduce vibration noise of the pump unit.
Disclosure of Invention
The invention aims to provide a five-bucket nested marine pump set vibration isolation base capable of reducing vibration noise by more than 9-12 decibels for a pump set.
The aim of the invention is realized by the following technical scheme:
the five-bucket nested marine pump set vibration isolation base is fixed on a ship body mounting base; the pump comprises a pump set seat plate, an outer bucket upper port connecting plate, an outer bucket lower port connecting plate, an outer middle bucket upper port connecting plate, an outer middle bucket lower port connecting plate, a middle bucket upper port connecting plate, a middle bucket lower port connecting plate, an inner middle bucket upper port connecting plate, an inner middle bucket lower port connecting plate, a retainer, a plurality of stiffening ribs, a body seat plate and five buckets, wherein the five buckets comprise an outer bucket, an inner bucket, an outer middle bucket, a middle bucket and an inner middle bucket, and the five buckets are fixedly connected into a whole by five layers of overlapping from inside to outside, and the outer bucket, the inner middle bucket, the outer middle bucket and the outer bucket are all in a frustum shape or a frustum pyramid shape; the five-bucket type is divided into an upward bucket opening type or a downward bucket opening type, wherein in the upward bucket opening type five-bucket, the big port of an outer bucket is upward, the big port of an outer middle bucket is downward, the big port of a middle bucket is upward, the big port of an inner middle bucket is downward, and the big port of an inner bucket is upward; the small port of the outer bucket is fixedly connected with the large port of the outer middle bucket through the outer bucket lower port connecting plate, the small port of the outer middle bucket is fixedly connected with the large port of the middle bucket through the outer middle bucket upper port connecting plate, the small port of the middle bucket is fixedly connected with the large port of the inner middle bucket through the middle bucket lower port connecting plate, the small port of the inner middle bucket is fixedly connected with the large port of the inner bucket through the inner middle bucket upper port connecting plate, and the small port at the bottom of the inner bucket is fixedly connected with the pump set seat plate; the guard ring passes through the upper part of the large end of the outer bucket and is fixedly connected with the lower part of the large end of the outer bucket, and the lower side of the guard ring is fixedly connected with the upper side of the seat plate of the body and the outer peripheral surface of the outer bucket through a plurality of stiffening ribs which are uniformly distributed;
in the five hoppers with downward hopper openings, the big port of the outer hopper is downward, the big port of the outer and middle hoppers is upward, the big port of the inner and middle hoppers is upward, the big port of the middle hopper is downward, and the big port of the inner hopper is downward; the small port of the outer bucket is fixedly connected with the large port of the outer middle bucket through an outer bucket upper port connecting plate, the small port of the outer middle bucket is fixedly connected with the large port of the middle bucket through an outer middle bucket lower port connecting plate, the small port of the middle bucket is fixedly connected with the large port of the inner middle bucket through an inner middle bucket upper port connecting plate, the small port of the inner middle bucket is fixedly connected with the large port of the inner bucket through an inner middle bucket lower port connecting plate, and the small port of the inner bucket is fixedly connected with the pump set seat plate; the guard ring passes through the lower part of the large end of the outer bucket and is fixedly connected with the outer bucket; the lower side of the guard ring is fixedly connected with the upper side of the body seat plate and the peripheral surface of the outer bucket through a plurality of reinforcing ribs which are uniformly distributed;
in the two types of five hoppers, an outer frustum ring bus and an outer middle frustum ring bus are intersected by each other at an acute angle; the inner middle frustum pyramid ring bus and the inner bucket frustum ring bus are intersected by an acute angle;
the middle cover of the pump group is fixedly connected through a plurality of fasteners penetrating through the flange of the middle cover and the seat plate of the pump group, and the fluid pump or the compressor vertically penetrates through the through hole of the seat plate of the pump group; the vertical surfaces of the outer bucket, the outer middle bucket, the inner middle bucket and the inner bucket are respectively provided with a plurality of frequency modulation holes with different sizes, and the inner side surfaces and the outer side surfaces of the five buckets are uniformly laid with energy absorption damping dressing.
The object of the invention is further achieved by the following technical measures.
Further, in the frustum-shaped structure, the pump set seat plate, the outer bucket upper opening connecting plate, the outer bucket lower opening connecting plate, the outer middle bucket upper opening connecting plate, the outer middle bucket lower opening connecting plate, the middle bucket upper opening connecting plate, the middle bucket lower opening connecting plate, the inner middle bucket upper opening connecting plate, the inner middle bucket lower opening connecting plate, the guard ring and the body seat plate are all round; in the structure of the conical frustum pyramid, the pump set seat plate, the outer bucket upper port connecting plate, the outer bucket lower port connecting plate, the outer middle bucket upper port connecting plate, the outer middle bucket lower port connecting plate, the middle bucket upper port connecting plate, the middle bucket lower port connecting plate, the inner middle bucket upper port connecting plate, the inner middle bucket lower port connecting plate, the retainer, the body seat plate retainer and the body seat plate are polygonal.
Further, the small end port of the outer bucket is directly and fixedly connected with the large end port of the outer middle bucket, or the small end port of the outer middle bucket is directly and fixedly connected with the large end port of the middle bucket, or the small end port of the middle bucket is directly and fixedly connected with the large end port of the inner middle bucket, or the small end port of the inner middle bucket is directly and fixedly connected with the large end port of the inner bucket, and the outer edge of the fixed connection part is naturally transited in a smooth circular arc.
Further, a relation formula A=nB of the number A of the mounting bolt holes of the pump set base plate and the number of the mounting bolt holes of the pump set is that n is more than or equal to 2 and is an integer; the body bedplate mounting bolt holes are arranged on two sides of the stiffening ribs.
Further, the number of the stiffening ribs is 1/2 of the number of the mounting bolt holes of the body seat plate.
Furthermore, the energy-absorbing damping dressing is made of a high polymer material.
The invention adopts the five-bucket structure of the outer bucket, the outer middle bucket, the inner middle bucket and the inner bucket which are sequentially overlapped and fixedly connected with each other, thereby increasing the absorption area of vibration and the transmission path of vibration and effectively attenuating the vibration. Simultaneously, for the five-bucket structure with the bucket opening facing upwards, the tensile stress from the pump group load is mainly born in the directions of the outer bucket, the middle bucket and the inner bucket buses or the ridge lines, and the compressive stress from the pump group load is mainly born in the directions of the outer middle bucket and the inner middle bucket buses or the ridge lines; for a five-bucket structure with a downward bucket opening, the directions of the buses or the edge lines of the inner bucket, the middle bucket and the outer bucket mainly bear the compressive stress from the load of the pump set, and the directions of the buses or the edge lines of the outer middle bucket and the inner middle bucket mainly bear the tensile stress from the load of the pump set; the change of stress direction in the direction of the bus or the ridge of the inner bucket and the outer bucket has damping effect on vertical vibration. The pump group is fixed on the pump group seat board of the small end port of the inner bucket, so that the invention is connected with the pump group into an organic whole, and a plurality of frequency modulation holes with different sizes are arranged on the vertical surfaces of the outer bucket, the outer middle bucket, the inner middle bucket and the inner bucket, thereby changing the path of vibration transmission and adjusting the natural frequency of the five buckets, and further effectively attenuating the vibration; meanwhile, the two connecting hoppers are intersected at an acute angle, so that the sectional areas of the different horizontal sections of the five hoppers are unequal, and the stresses of the different sections are unequal; furthermore, by combining the action of the frequency modulation holes, the stress at different positions in the same horizontal section of the five drawers is also unequal, and the vibration is damped; the pump set bedplate mounting bolt holes are arranged on two sides of the stiffening ribs, so that vibration energy of the five-bucket telescopic pump set vibration isolation base for the ship can be more uniformly transmitted to the mounting base in the ship body, and the single-point vibration intensity can be reduced. The energy-absorbing damping dressing laid on the inner side surface and the outer side surface of the five drawers can effectively absorb the mechanical energy of vibration and convert the mechanical energy into heat energy to be emitted into the air. Under the comprehensive action of the measures, the vibration noise of the pump set is reduced, and the vibration influence of the vibration of the environment and other equipment on the bearing pump set is better reduced. The invention can reduce the vibration noise by more than 9-12 dB, and can be applied to land and vehicles besides ships; and good social and economic benefits are obtained.
Drawings
FIG. 1 is a schematic diagram of a structure in which a hopper mouth is upward and five hoppers are frustum-shaped;
FIG. 2 is a schematic diagram of a second embodiment of the present invention with a downward bucket mouth and a five-bucket conical frustum;
FIG. 3 is a top view of the outer frustum ring of FIG. 1;
FIG. 4 is a top view of the outer frustum ring of FIG. 2;
FIG. 5 is a schematic view of the structure of the direct fixed connection of the outer bucket and the outer middle bucket;
fig. 6 is an expanded view of the outer frustum ring of fig. 1.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1 to 6, the vibration isolation base of the five-bucket stacked ship pump set is fixed on a ship body mounting base 100, and comprises five layers of stacked and integrated together, namely a pump set base plate 1, an outer bucket upper port connecting plate 21, an outer bucket lower port connecting plate 22, an outer middle bucket upper port connecting plate 23, an outer middle bucket lower port connecting plate 24, a middle bucket upper port connecting plate 25, a middle bucket lower port connecting plate 26, an inner middle bucket upper port connecting plate 27, an inner middle bucket lower port connecting plate 28, a retainer 3, 8 stiffening ribs 4, a body base plate 5 and five buckets 6, wherein the five buckets 6 comprise an outer bucket 61, an inner bucket 62, an outer middle bucket 63, a middle bucket 64 and an inner middle bucket 65, and the five layers of stacked and integrated together are fixedly connected from inside to outside, namely an inner bucket 62, an inner middle bucket 65, a middle bucket 64, an outer middle bucket 63 and an outer bucket 61. The five hoppers 6 are divided into two types, an upwardly-opening type and a downwardly-opening type.
As shown in fig. 1, in the five hoppers 6 with the first hopper opening facing up, the large port of the outer hopper 61 faces up, the large port of the outer middle hopper 63 faces down, the large port of the middle hopper 64 faces up, the large port of the inner middle hopper 65 faces down, and the large port of the inner hopper 62 faces up. The small port of the outer bucket 61 and the large port of the outer middle bucket 63 are fixedly connected through the outer bucket lower port connecting plate 22 in a welding way, and the small port of the outer middle bucket 63 and the large port of the middle bucket 64 are fixedly connected through the outer middle bucket upper port connecting plate 23 in a welding way. The small port of the middle bucket 64 and the large port of the inner middle bucket 65 are fixedly connected through the inner middle bucket lower port connecting plate 26 in a welding way, and the small port of the inner middle bucket 65 and the large port of the inner bucket 62 are fixedly connected through the inner middle bucket upper port connecting plate 27 in a welding way. The retainer 3 passes through the upper part of the large end of the outer bucket 61 and is welded and fixedly connected with the upper part of the large end of the outer bucket 61, and the lower side of the retainer 3 is welded and fixedly connected with the upper side of the body seat plate 5 and the outer peripheral surface of the retainer 3 and the outer bucket 61 through 8 reinforcing ribs 4 which are uniformly distributed.
As shown in fig. 2, in the five-bucket 6 with the two-bucket opening facing downward, the small port of the outer bucket 61 faces upward, the large port of the outer middle bucket 63 faces upward, the small port of the middle bucket 64 faces upward, the large port of the inner middle bucket 65 faces upward, and the large port of the inner bucket 62 faces downward. The small port of the outer bucket 61 and the large port of the outer middle bucket 63 are fixedly connected through the outer bucket upper port connecting plate 21 in a welding way, the small port of the outer middle bucket 63 and the large port of the middle bucket 64 are fixedly connected through the outer middle bucket lower port connecting plate 24 in a welding way, the small port of the middle bucket 64 and the large port of the inner middle bucket 65 are fixedly connected through the middle bucket upper port connecting plate 25 in a welding way, the small port of the inner middle bucket 65 and the large port of the inner bucket 62 are fixedly connected through the inner middle bucket lower port connecting plate 28 in a welding way, and the small port of the inner bucket 62 is fixedly connected with the pump set seat plate 1 in a welding way. The guard ring 3 passes through the upper part of the large end of the outer bucket 61 and is fixedly connected with the outer bucket 61 by welding; the lower side of the guard ring 3 is welded and fixedly connected with the upper side of the body seat board 5 and the outer peripheral surface of the outer bucket 61 through 8 reinforcing ribs 4 which are uniformly distributed.
In the five-bucket 6 of the first and second embodiments, the acute angle intersection is formed between the outer frustum ring 611A bus and the outer middle frustum ring 631A bus, between the outer middle frustum ring 631A bus and the middle frustum ring 641A bus, between the middle frustum ring 641A bus and the inner middle frustum ring 651A bus, and between the inner middle frustum ring 651A bus and the inner bucket frustum ring 621A bus. The edges of the outer frustum ring 611B and the inner frustum ring 631B are intersected by acute angles, and the edges of the inner frustum ring 651B and the edges of the inner frustum ring 621B are intersected by acute angles.
As shown in fig. 3, in the truncated cone structure, the pump set plate 1, the outer bucket lower port connecting plate 22, the outer middle bucket upper port connecting plate 23, the middle bucket lower port connecting plate 26, the inner middle bucket upper port connecting plate 27, the outer bucket upper port connecting plate 21, the outer middle bucket lower port connecting plate 24, the middle bucket upper port connecting plate 25, the inner middle bucket lower port connecting plate 28, the retainer 3, and the body seat plate 5 are all circular.
As shown in fig. 4, in the structure of the truncated pyramid, the pump stack base plate 1, the outer bucket lower port connecting plate 22, the outer middle bucket upper port connecting plate 23, the middle bucket lower port connecting plate 26, the inner middle bucket upper port connecting plate 27, the outer bucket upper port connecting plate 21, the outer middle bucket lower port connecting plate 24, the middle bucket upper port connecting plate 25, the inner middle bucket lower port connecting plate 28, the retainer 3, and the body base plate 5 are rectangular.
The number of the stiffening ribs 4 is 1/2 of the number of the mounting bolt holes 51 of the body seat plate. The relation formula A=nB of the number A of the pump set plate mounting bolt holes 12 and the number B of the pump set mounting bolt holes 204, wherein n is more than or equal to 2 and is an integer; the body seat plate mounting bolt holes 51 are arranged on both sides of the stiffening rib 4.
The middle cover 201 of the pump set 20 is fixedly connected with the pump set seat board 1 and the adjusting gasket 13 through a plurality of fasteners 7 passing through the middle cover flange 202, the prime movers of the first embodiment and the second embodiment are both motors 203, and the motors 203 and the liquid pump or the compressor driven by the motors 203 form the pump set 20 which vertically passes through the pump set seat board through hole 11.
As shown in fig. 5, the small end port of the outer bucket 61 and the large end port of the outer middle bucket 63 can be directly welded and fixed, the outer edge of the welded part is naturally transited in a smooth arc, one inner middle bucket lower port connecting plate 26 can be saved, and the manufacturing cost can be reduced.
As shown in fig. 6, the outer frustum ring 611A or the outer frustum ring 611B, the inner frustum ring 621A or the inner frustum ring 621B, the outer middle frustum ring 631A or the outer middle frustum ring 631B, the middle frustum ring 641A or the middle frustum ring 641B, the inner middle frustum ring 651A or the inner middle frustum ring 651B, which are the respective hoppers of the five hoppers 6, are respectively provided with a plurality of frequency modulation holes 652 having different sizes, and the energy-absorbing damping dressing 8 is uniformly laid on the inner and outer sides of the five hoppers 6, so that vibration can be effectively absorbed.
The energy-absorbing damping dressing 8 is made of a high polymer material. A plurality of adjusting gaskets 13 are arranged between the middle cover flange 202 of the pump group 20 and the pump group seat plate 1, so that the perpendicularity of the pump group 203 can be conveniently adjusted.
In addition to the above embodiments, other embodiments of the present invention are possible, and all technical solutions formed by equivalent substitution or equivalent transformation are within the scope of the present invention.

Claims (3)

1. The five-bucket nested marine pump set vibration isolation base is fixed on a ship body mounting base; the device is characterized by comprising a pump set seat plate, an outer bucket upper port connecting plate, an outer bucket lower port connecting plate, an outer middle bucket upper port connecting plate, an outer middle bucket lower port connecting plate, a middle bucket upper port connecting plate, a middle bucket lower port connecting plate, an inner middle bucket upper port connecting plate, an inner middle bucket lower port connecting plate, a retainer, a plurality of stiffening ribs, a body seat plate and five buckets, wherein the five buckets comprise an outer bucket, an inner bucket, an outer middle bucket, a middle bucket and an inner middle bucket, and five layers of overlapping and fixedly connected into a whole from inside to outside, and the outer bucket, the inner bucket, the outer middle bucket, the middle bucket and the inner middle bucket are all in a frustum shape or a frustum pyramid shape; the five-bucket type is divided into an upward bucket opening type or a downward bucket opening type, wherein in the upward bucket opening type five-bucket, the big port of an outer bucket is upward, the big port of an outer middle bucket is downward, the big port of a middle bucket is upward, the big port of an inner middle bucket is downward, and the big port of an inner bucket is upward; the small port of the outer bucket is fixedly connected with the large port of the outer middle bucket through the outer bucket lower port connecting plate, the small port of the outer middle bucket is fixedly connected with the large port of the middle bucket through the outer middle bucket upper port connecting plate, the small port of the middle bucket is fixedly connected with the large port of the inner middle bucket through the middle bucket lower port connecting plate, the small port of the inner middle bucket is fixedly connected with the large port of the inner bucket through the inner middle bucket upper port connecting plate, and the small port at the bottom of the inner bucket is fixedly connected with the pump set seat plate; the guard ring passes through the upper part of the large end of the outer bucket and is fixedly connected with the lower part of the large end of the outer bucket, and the lower side of the guard ring is fixedly connected with the upper side of the seat plate of the body and the outer peripheral surface of the outer bucket through a plurality of stiffening ribs which are uniformly distributed;
in the five hoppers with downward hopper openings, the big port of the outer hopper is downward, the big port of the outer and middle hoppers is upward, the big port of the middle hopper is downward, the big port of the inner and middle hoppers is upward, and the big port of the inner hopper is downward; the small port of the outer bucket is fixedly connected with the large port of the outer middle bucket through an outer bucket upper port connecting plate, the small port of the outer middle bucket is fixedly connected with the large port of the middle bucket through an outer middle bucket lower port connecting plate, the small port of the middle bucket is fixedly connected with the large port of the inner middle bucket through a middle bucket upper port connecting plate, the small port of the inner middle bucket is fixedly connected with the large port of the inner bucket through an inner middle bucket lower port connecting plate, and the small port of the inner bucket is fixedly connected with the pump set seat plate; the guard ring passes through the lower part of the large end of the outer bucket and is fixedly connected with the outer bucket; the lower side of the guard ring is fixedly connected with the upper side of the body seat plate and the peripheral surface of the outer bucket through a plurality of reinforcing ribs which are uniformly distributed;
in the two types of five hoppers, an outer frustum ring bus and an outer middle frustum ring bus are intersected by each other at an acute angle; the inner middle frustum pyramid ring bus and the inner bucket frustum ring bus are intersected by an acute angle;
the middle cover of the pump group is fixedly connected through a plurality of fasteners penetrating through the flange of the middle cover and the seat plate of the pump group, and the fluid pump or the compressor vertically penetrates through the through hole of the seat plate of the pump group; the vertical surfaces of the outer bucket, the outer middle bucket, the inner middle bucket and the inner bucket are respectively provided with a plurality of frequency modulation holes with different sizes, and the inner side surfaces and the outer side surfaces of the five buckets are uniformly laid with energy absorption damping dressing;
in the frustum-shaped structure, a pump set seat plate, an outer bucket upper port connecting plate, an outer bucket lower port connecting plate, an outer middle bucket upper port connecting plate, an outer middle bucket lower port connecting plate, a middle bucket upper port connecting plate, a middle bucket lower port connecting plate, an inner middle bucket upper port connecting plate, an inner middle bucket lower port connecting plate, a retainer and a body seat plate are all round; in the conical frustum-shaped structure, the pump set seat plate, the outer bucket upper port connecting plate, the outer bucket lower port connecting plate, the outer middle bucket upper port connecting plate, the outer middle bucket lower port connecting plate, the middle bucket upper port connecting plate, the middle bucket lower port connecting plate, the inner middle bucket upper port connecting plate, the inner middle bucket lower port connecting plate, the retainer, the body seat plate retainer and the body seat plate are polygonal;
the small end port of the outer bucket is directly and fixedly connected with the large end port of the outer middle bucket, or the small end port of the outer middle bucket is directly and fixedly connected with the large end port of the middle bucket, or the small end port of the middle bucket is directly and fixedly connected with the large end port of the inner middle bucket, or the small end port of the inner middle bucket is directly and fixedly connected with the large end port of the inner bucket, and the outer edge of the fixed connection part is naturally transited in a smooth arc;
the relation A=nB of the number A of the mounting bolt holes of the pump set base plate and the number B of the mounting bolt holes of the pump set, wherein n is more than or equal to 2 and is an integer; the body bedplate mounting bolt holes are arranged on two sides of the stiffening ribs.
2. The vibration isolation base of the five-bucket nested ship pump set according to claim 1, wherein the number of the stiffening ribs is 1/2 of the number of the mounting bolt holes of the base plate of the body.
3. The vibration isolation base of the five-bucket nested ship pump set according to claim 1, wherein the energy-absorbing damping dressing is made of a high polymer material.
CN201810498132.XA 2018-05-23 2018-05-23 Five-bucket stacked pump set vibration isolation base for ship Active CN108528631B (en)

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