CN205714981U - A kind of isolation mounting of vertical centrifugal pump jet source - Google Patents
A kind of isolation mounting of vertical centrifugal pump jet source Download PDFInfo
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- CN205714981U CN205714981U CN201620360530.1U CN201620360530U CN205714981U CN 205714981 U CN205714981 U CN 205714981U CN 201620360530 U CN201620360530 U CN 201620360530U CN 205714981 U CN205714981 U CN 205714981U
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- centrifugal pump
- vertical centrifugal
- base
- air spring
- platform
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Abstract
This utility model belongs to vibration damping de-noising field, relates to the isolation mounting of a kind of vertical centrifugal pump jet source.This utility model includes base, supports platform, air spring, and described base is cylinder, and described support platform is cuboid, and described air spring is placed in the bottom supporting platform；4 times of the through hole center diagonal distance of a diameter of vertical centrifugal pump mounting base of described base, the thickness of base is 5 times of vertical centrifugal pump mounting base thickness, and on base, the position of corresponding vertical centrifugal pump mounting base through hole, offers screwed hole.The resonant frequency that this utility model utilizes air spring, vertical centrifugal pump, base and support platform to form system is less than the lowest operating frequency of vertical centrifugal pumpThus the transmission being well isolated between the vibration of vertical centrifugal pump and ground, reliably eliminate the vibration of vertical centrifugal pump to the impact of acoustic field in pond.
Description
Technical field
This utility model belongs to vibration damping de-noising field, relates to the isolation mounting of a kind of vertical centrifugal pump jet source.
Background technology
Along with going deep into of sea pipeline radiated noise research, most test need to use vertical centrifugal pump as the jet source of pipeline.But in use, the great vibrations of vertical centrifugal pump is easily transferred in pond by ground, pool wall, form acoustic signals, the result that impact test is measured；At present, in vertical centrifugal pump vibration reducing measure, there is problems: one be the vibration of vertical centrifugal pump be due to rotor Periodic Rotating produce, by electrical network or the FREQUENCY CONTROL of speed regulator, the vibrational state of vertical centrifugal pump belongs to forced vibration state, when studying for jet noise, it is necessary to consider installation and the type selecting of rubber shock absorber of vertical centrifugal pump, this is the most blank in the service manual of vertical centrifugal pump；Two is the deflection being difficult to estimate rubber shock absorber after loading vertical centrifugal pump; owing to the compaction state of rubber shock absorber is inconsistent; often can make vertical centrifugal pump generation small angle inclination; make motor that " eccentric " effect occur in rotary course; produce " uttering long and high-pitched sounds " phenomenon, fragile vertical centrifugal pump；Owing to the operation principle of rubber shock absorber is the energy utilizing the detrusion of rubber to go to consume vibration, works long hours and easily cause the fatigue of rubber shock absorber.
Utility model content
The purpose of this utility model there are provided the isolation mounting of a kind of tired vertical centrifugal pump jet source that can solve the problem that rubber shock absorber that vertical centrifugal pump in use exists as jet source.
The purpose of this utility model is achieved in that
The isolation mounting of a kind of vertical centrifugal pump jet source, including base, supports platform, air spring, and described base is cylinder, and described support platform is cuboid, and described air spring is placed in the bottom supporting platform；
4 times of the through hole center diagonal distance of a diameter of vertical centrifugal pump mounting base of described base, the thickness of base is 5 times of vertical centrifugal pump mounting base thickness, and on base, the position of corresponding vertical centrifugal pump mounting base through hole, offers screwed hole；
Described support platform is the cuboid that the length of side is equal, and the length of side supporting platform is base diameterTimes；Open with the screwed hole center alignment of through hole, the center of through hole and air spring at four angles supporting platform；The quality supporting platform adds 10 times equal to vertical centrifugal pump quality of the quality of upper bed-plate, thereby determines that the thickness supporting platform；
Described base is welded on the center supporting platform；Air spring is fixed in bolt mode and supports at four angles of platform；
The inflated condition of regulation air spring, make the carrying quality of air spring equal to vertical centrifugal pump add upper bed-plate, 2 times of support platform gross mass or more than；Suitably regulate the height of air bag, make vertical centrifugal pump, base and supporting platform in level；
The usefulness of the isolation mounting of a kind of vertical centrifugal pump jet source of the present utility model is to utilize the speed of motor in vertical centrifugal pump only to be controlled by electrical network or speed regulator frequency, centrifugal pump and base and supporting platform is made to be less than the lowest operating frequency of vertical centrifugal pump in forced vibration state, the resonant frequency utilizing air spring, vertical centrifugal pump, base and support platform to form systemThus the transmission being well isolated between the vibration of vertical centrifugal pump and ground, reliably eliminate the vibration of vertical centrifugal pump to the impact of acoustic field in pond；The height utilizing air spring can be adjusted by inflation pressure so that vertical centrifugal pump, base, supporting platform are in level effect, it is to avoid vertical centrifugal pump run-off the straight in operation process, it is to avoid the generation of " uttering long and high-pitched sounds ".
Accompanying drawing explanation
Fig. 1 is the general frame of the isolation mounting of a kind of vertical centrifugal pump jet source；
Fig. 2 is base schematic diagram；
Fig. 3 is for supporting platform schematic diagram；
Fig. 4 is experimental test result.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described further.
The isolation mounting of a kind of vertical centrifugal pump jet source, including vertical centrifugal pump 1, base 2, supports platform 3, air spring 4；Wherein, 1 is vertical centrifugal pump, and 11 is bolt, and 2 is base, and 21 is screwed hole, and 3 for supporting platform, and 31 is corner, and 32 is through hole, and 4 is air spring.
Vertical centrifugal pump 1 is ISG vertical pipeline centrifugal pump, and model is ISG40-250A, rated power 5.5kW, long 40cm, wide 40.5cm, high 63cm, mounting base is rectangle, long 17cm, wide 12cm, have four through holes on mounting base, through hole center distance 13cm, wide 8cm, aperture is 14mm, and mounting base thickness is 1.8cm；
Base 2 is cylinder, and material is rustless steel, a diameter of 60cm, thickness 8cm, offers the screwed hole corresponding with vertical centrifugal pump 1 mounting base through hole at the center of base 2, and the specification of screwed hole is M14；
Supporting platform 3 is cuboid, material is rustless steel, and the length of cuboid and width are 86cm, and thickness is 14cm, at cubical four, respectively diging up a little cuboid, form corner 31, length and the width of corner 31 are 16cm, it is highly 5cm, six through holes are respectively offered at corner 31, a diameter of 11mm of through hole, the center of through hole and the center alignment of air spring 4 screwed hole；
The model of air spring 4 is GF-100-160-2, air bag external diameter 16cm, lowest compression height 7.4cm, safety elongation height 19cm；
The center alignment of the center calcaneus branches support platform 3 of base 2, base 2 is welded on support platform 3；Utilize bolt (M10) to be fixed on by air spring 4 at four corners 31 supporting platform 3, base 2, support platform 3 and air spring 4 are placed on the ground；
Utilizing air compressor machine (in embodiment, not shown) to inflate in air spring 4, be adjusted, the inflation pressure making air spring 4 is 0.3MPa, and working depth 8.2cm, the most single air spring 4 maximum can carry 538kg；
Utilize the bolt mounting base through vertical centrifugal pump 1 of M14, and the screwed hole on base 2 that aligns, vertical centrifugal pump 1 is fastened on base 2；Utilizing level indicator inspection to support platform 3 and the state of vertical centrifugal pump 1, suitably regulate the inflated condition of air spring 4, make support platform 3 be in level, vertical centrifugal pump 1 is in vertical state；
The quality of vertical centrifugal pump 1 is 98kg, the quality of base 2 is 176kg, and the quality supporting platform 3 is 736kg, ignores the quality (only 1.1kg) of air spring 4, the service manual utilizing air spring 4 checks in, and the stiffness factor of air spring 4 vertical direction is 54000N/m；Ignore the difference between air spring 4, think that four air springs are in parallel, the stiffness being made up of system vertical centrifugal pump 1, base 2, support platform 3 and air spring 4 is 4 × 54000N/m, gross mass is 1010kg, the resonant frequency of the isolation mounting being calculated this vertical centrifugal pump jet source is 14.6Hz, and effective job initiation frequency of the isolation mounting of this vertical centrifugal pump jet source is 20Hz.
The rated speed of vertical centrifugal pump 1 is 2900 revs/min, i.e. rated operation frequency is 48.33Hz, the rotating speed of this vertical centrifugal pump 1 can be adjusted by speed regulator (in embodiment, not shown), it is ensured that the lowest operating frequency of this vertical centrifugal pump 1 is more than 20Hz；When the operating frequency of speed regulator is 40Hz, vertical centrifugal pump 1 is directly placed at ground vibration signal and carries out spectrum analysis, frequency spectrum is made up of several discrete spike spectrums, and minimum spike spectral frequency is the operating frequency of vertical centrifugal pump 1, namely fundamental frequency (39Hz)；After being applied to the isolation mounting of this vertical centrifugal pump jet source, the decay of the vibration signal on ground is up to 30dB (see Fig. 4), and this shows that the isolation mounting of this vertical centrifugal pump jet source designs is effective and feasible.
This isolation mounting being used for vertical centrifugal pump jet source is the rigidity utilizing vertical centrifugal pump 1, base 2, the rigidity of support platform 3 to be much larger than air spring 4, vertical centrifugal pump 1, base 2, support platform 3 and air spring 4 are formed a vibrational system, vibration isolating effect by the isolation mounting of this vertical centrifugal pump jet source of the theory analysis of mechanical vibration, this changes the method that the resonant frequency (in the present embodiment, the resonant frequency of air spring 4 is 2.4Hz) that the most only need to consider air spring 4 just can reach effective vibration isolation less than the operating frequency of vertical centrifugal pump 1；Visible through this embodiment, the stiffness factor of the design air spring to be considered 4 of whole vibrating isolation system, the gross mass of system to be considered.
Claims (4)
1. an isolation mounting for vertical centrifugal pump jet source, including base, supports platform, air spring, it is characterised in that: institute
Stating base is cylinder, and described support platform is cuboid, and described air spring is placed in the bottom supporting platform.
The isolation mounting of a kind of vertical centrifugal pump jet source the most according to claim 1, it is characterised in that: described base
Material is rustless steel, 4 times of the through hole center diagonal distance of a diameter of vertical centrifugal pump mounting base of base, the thickness of base
Degree is 4-5 times of vertical centrifugal pump mounting base thickness.
The isolation mounting of a kind of vertical centrifugal pump jet source the most according to claim 1, it is characterised in that: described support platform
Material be rustless steel, support the length of platform and wide be base diameterTimes；Gross mass according to base and support platform is equal to vertical
10 times of formula centrifugal pump quality, determine the thickness supporting platform.
The isolation mounting of a kind of vertical centrifugal pump jet source the most according to claim 1, it is characterised in that: air spring
Carrying quality equal to vertical centrifugal pump, base, 2 times of support platform gross mass or more than.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360530.1U CN205714981U (en) | 2016-04-26 | 2016-04-26 | A kind of isolation mounting of vertical centrifugal pump jet source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620360530.1U CN205714981U (en) | 2016-04-26 | 2016-04-26 | A kind of isolation mounting of vertical centrifugal pump jet source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205714981U true CN205714981U (en) | 2016-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620360530.1U Expired - Fee Related CN205714981U (en) | 2016-04-26 | 2016-04-26 | A kind of isolation mounting of vertical centrifugal pump jet source |
Country Status (1)
| Country | Link |
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| CN (1) | CN205714981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626108A (en) * | 2018-05-23 | 2018-10-09 | 武汉麦康德设备有限公司 | Three buckets are nested shape marine pump group vibration isolation mounts |
-
2016
- 2016-04-26 CN CN201620360530.1U patent/CN205714981U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108626108A (en) * | 2018-05-23 | 2018-10-09 | 武汉麦康德设备有限公司 | Three buckets are nested shape marine pump group vibration isolation mounts |
| CN108626108B (en) * | 2018-05-23 | 2024-01-30 | 武汉麦康德设备有限公司 | Pump set vibration isolation base for three-bucket stacking ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 Termination date: 20190426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |