CN105275890A - High-capacity adjustable simulation test load noise-reduction system - Google Patents
High-capacity adjustable simulation test load noise-reduction system Download PDFInfo
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- CN105275890A CN105275890A CN201410334505.1A CN201410334505A CN105275890A CN 105275890 A CN105275890 A CN 105275890A CN 201410334505 A CN201410334505 A CN 201410334505A CN 105275890 A CN105275890 A CN 105275890A
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- China
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- simulation test
- noise reduction
- test load
- reduction system
- large copacity
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Abstract
The invention relates to a high-capacity adjustable simulation test load noise-reduction system. The system is arranged on an axial flow cooling fan. The cooling fan comprises vanes arranged on a shaft; the system comprises elastic devices which are perpendicularly disposed on the vanes; each elastic device comprises a screw, and a nut and a bolt of the screw; the screws penetrate through fixing holes formed in the vanes and are connected with shell supports of loads; the nuts and the bolts are sequentially arranged above the shell supports; elastic parts A are disposed between the shell supports and the vanes; elastic parts B are disposed between the vanes and the heads of the screws. By means of the high-capacity adjustable simulation test load noise-reduction system, the problems of vibration caused by rotation of the axial flow cooling fan and low-frequency resonance formed between simulated load shells are solved.
Description
Technical field:
The present invention relates to a kind of load noise reduction system, more specifically relate to a kind of Large Copacity adjustable simulation test load noise reduction system.
Background technique:
The load of Large Copacity AC analogue has been widely used in the performances such as the power detecting the equipment such as high-power ac power, diesel generating set, transformer, communication power supply, uninterruptable power source (UPS), inverter, electric, aging and reliability.Existing AC analogue load comprises resistive fictitious load, perceptual fictitious load, capacitive fictitious load three kinds of fictitious load forms, the fictitious load of coupling is generally resistance value, capacitance, inductance value by the inner each power consumption components and parts of regulation fictitious load, then closed response relay realizes respective element loading, the power required for realization.
General employing forced air cooling mode exchanges the heat radiation of adjustable simulation test load to Large Copacity, the very large heat produced when resistive fictitious load runs, blowing heat radiation need be forced with the high-power axial cooling fan of multiple stage, and multiple stage axial cooling fan rotates the vibrations meeting produced and exchanges with Large Copacity between adjustable simulation test load shell and produce low-frequency resonance, this low-frequency noise, penetrating power is strong, and propagation length is far away.The noise exchanging adjustable simulation power experiment load system more than 90% according to test discovery Large Copacity is caused by the low-frequency resonance of axial cooling fan and equipment self.Because time in axial cooling fan bolton to equipment supporter, for being rigidly connected between radiation fan and equipment supporter, axial cooling fan runs vibrations, and easily exchanging adjustable simulation test load housing with Large Copacity forms low-frequency resonance, produces strong low-frequency noise, befouling environment.
Therefore, need to provide a kind of safe and reliable, simple and easy to do, cost is low, device that is effective, that can reduce fictitious load radiation system noise solves prior art Problems existing.
Summary of the invention:
The object of this invention is to provide a kind of Large Copacity adjustable simulation test load noise reduction system, system solves the problem axial cooling fan and rotate the low-frequency resonance problem formed between vibrations and fictitious load housing produced.
For achieving the above object, the present invention by the following technical solutions: simulation test load noise reduction system that a kind of Large Copacity is adjustable, this Operation system setting is on axial flow cooling fan, and described cooling fan comprises the blade be arranged on axle; Described system comprises the elastic device be vertically set on described blade; Described elastic device comprises the fixed hole be provided with through described blade and the screw rod be connected with the shell holder of load, the nut being successively set on screw rod above described shell holder and latch; Elastic component A is provided with between described shell holder and described blade; Elastic component B is provided with between described blade and described screw rod stem.
A kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, is characterized in that: top and the low side of described elastic component A are respectively equipped with the pad be connected with described shell holder and described blade; Top and the low side of described elastic component B are respectively equipped with the pad be connected with described blade and described screw rod stem; Described pad external diameter is more than or equal to the metallic shim of elastic component external diameter.
A kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, it is characterized in that: described elastic component A and elastic component B is damping spring, described latch is set screw nut.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, is characterized in that: described screw diameter mates with constant aperture; Described screw rod is provided with adjustment screw thread, and on described screw thread, be provided with the hinge last that anti-locking nut comes off.
A preferred a kind of Large Copacity more provided by the invention adjustable simulation test load noise reduction system, is provided with resilient nonmetallic noise reduction block below the screw rod of described elastic device.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, described damping spring is the stage clip of metal spring wire material coiling, and its surface is the combination of one or more in original material color, coating corrosion-inhibiting coating and parcel anti-corrosion material.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, described damping spring shape be cylindrical, single taper shape, double cone shape, irregular cycle or square in the combination of one or more.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, the elastic device be arranged on each described blade is equal pitch, pitches or the combination of the two to the pitch on described axle.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, the cross section of described steel wire is circular; One in square, rectangle, triangle, regular polygon or irregular polygon.
Another preferred a kind of Large Copacity provided by the invention adjustable simulation test load noise reduction system, described noise reduction block external diameter is equal with damping spring minimum diameter, and described internal diameter is greater than adjusting screw rod external diameter 1mm-2mm, and thickness is any positive integer being greater than 10mm.
With immediate prior art ratio, the invention provides technological scheme and there is following excellent effect
1, present invention efficiently solves radiation fan rotate cause with fictitious load housing low-frequency resonance problem;
2, the present invention prevent from radiation fan from rotating causing with fictitious load housing low-frequency resonance, thus greatly reduce the low-frequency noise of generation;
3, principle of the invention science, structure is simple, has innovation and use value;
4, the present invention effectively reduces the intense radiation noise that radiation fan causes because low-frequency resonance moves, and its effect is very remarkable;
5, security of system of the present invention is reliable, simple and easy to do, cost is low, effective.
Accompanying drawing explanation
Fig. 1 is equal pitch cylindrical spring structural representation of the present invention;
Fig. 2 is irregular pitch cylindrical spring structural representation of the present invention;
Fig. 3 is tower spring schematic diagram of the present invention;
Fig. 4 is tower spring schematic diagram of the present invention;
Wherein, 1-shell holder, 2-latch, 3-nut, 4-damping spring, 5-pad, 6-screw rod.
Embodiment
Below in conjunction with embodiment, the invention will be described in further detail.
Embodiment 1:
As Figure 1-4, the invention Large Copacity adjustable simulation test load noise reduction system of this example is arranged on axial flow cooling fan, and described cooling fan comprises the blade be arranged on axle; Described system comprises the elastic device be vertically set on described blade; The screw rod 6 that the shell holder 1 that described elastic device comprises fixed hole and the load be provided with through described blade is connected, the nut 3 being successively set on screw rod 6 above described shell holder 1 and latch 2; Elastic component A is provided with between described shell holder 1 and described blade; Elastic component B is provided with between described blade and described screw rod stem.
Top and the low side of described elastic component A are respectively equipped with the pad 5 be connected with described shell holder 1 and described blade; Top and the low side of described elastic component B are respectively equipped with the pad 5 be connected with described blade and described screw rod 6 stem.Described elastic component A and elastic component B is damping spring 4.The top of described noise reduction block and bottom are respectively equipped with pad 5.
Noise reduction block is provided with below the screw rod 6 of described elastic device.Described noise abatement block is resilient nonmetallic noise abatement block, and it is the material with automatic recovery ability and extrusion capability repeatedly, as urethane rubber etc.; Its external diameter is equal with damping spring 4, internal orifice dimension is greater than adjusting screw rod 6 external diameter 1mm-2mm, thickness is any positive integer being greater than 10mm, described noise reduction block top and bottom install lower levelling plate 5 respectively, are to reduce or eliminate one of critical component producing low-frequency resonance between axial cooling fan running vibrations and Large Copacity adjustable simulation test load housing.
Described screw rod 6 is adjustable screw-rod structure, and described screw rod 6 is for being applicable to heat-dissipating fan constant aperture, and screw rod 6 is threaded the cylindrical fastening piece with jack.Described pad 5 meets screw rod 6 requirement for thickness, and the metallic shim that rigidity and intensity meet the demands, its external diameter is more than or equal to the metallic shim of damping spring 4 external diameter.Described nut 3 and supporting screw rod 6 use, and meet heat-dissipating fan and spring pressure demand.
Damping spring described in described damping spring 4 meets carrying axial cooling fan and attendant equipment weight demands, being the critical component flexibly connected for realizing axial cooling fan and bearing, is reduce or eliminate one of critical component producing low-frequency resonance between axial cooling fan running vibrations and Large Copacity adjustable simulation test load housing.Described damping spring 4 is stage clips of metal spring wire material coiling, its surface is the combination of one or more in original material color, coating corrosion-inhibiting coating and parcel anti-corrosion material, wherein apply corrosion-inhibiting coating and parcel anti-corrosion material, as adopted plating, electrophoresis, coating rust proof paint and frp layer parcel etc.Described damping spring 4 shape be cylindrical, single taper shape, double cone shape, irregular cycle or square in the combination of one or more.The elastic device be arranged on each described blade is equal pitch, pitches or the combination of the two to the pitch on described axle.The cross section of described steel wire is circular; One in square, rectangle, triangle, regular polygon or irregular polygon.
Described latch 2 is set screw nut, and it is prevent from locking the plug connector that the steel that prevents nut from coming off can dismantle repeatedly.
Described Large Copacity is adjustable, and simulation test load denoising device is installed as follows:
(1) in screw rod 6 stem, a pad 5 is installed, and then damping spring 4 is installed, a pad 5 is then installed again;
(2) then by the fixed hole of screw rod 6 through cooling fan;
(3) equally first a pad 5 is installed at the other end of screw rod 6, then a damping spring 4 is installed, then a pad 5 is installed, realizes radiation air and fall apart and flexibly connecting between housing;
(4) be then fixed in fictitious load shell holder 1 with nut 3;
(5) described latch 2 is through the positioning hole on screw rod 6, prevents nut 3 from coming off;
(6) when radiation fan rotates, damping spring 4 forced compression on heat-dissipating fan top, play buffer function, avoid being rigidly connected between blower fan and outer casing stand, thus eliminate cooling fan rotate cause produce low-frequency vibration with housing and then cause the problem of low-frequency noise, noise reduction block also reduces noise simultaneously.
Finally should be noted that: above embodiment is only in order to illustrate that technological scheme of the present invention is not intended to limit; although those of ordinary skill in the field should manage with reference to above-described embodiment and still can modify to the specific embodiment of the present invention or equivalent replacement; these do not depart from any amendment of spirit and scope of the invention or equivalent replacement, are all applying within the claims of the present invention awaited the reply.
Claims (10)
1. a Large Copacity adjustable simulation test load noise reduction system, this Operation system setting is on axial flow cooling fan, and described cooling fan comprises the blade be arranged on axle; It is characterized in that: described system comprises the elastic device be vertically set on described blade; Described elastic device comprises the fixed hole be provided with through described blade and the screw rod be connected with the shell holder of load, the nut being successively set on screw rod above described shell holder and latch; Elastic component A is provided with between described shell holder and described blade; Elastic component B is provided with between described blade and described screw rod stem.
2. a kind of Large Copacity as claimed in claim 1 adjustable simulation test load noise reduction system, is characterized in that: top and the low side of described elastic component A are respectively equipped with the pad be connected with described shell holder and described blade; Top and the low side of described elastic component B are respectively equipped with the pad be connected with described blade and described screw rod stem; Described pad external diameter is more than or equal to the metallic shim of elastic component external diameter.
3. a kind of Large Copacity as claimed in claim 1 or 2 adjustable simulation test load noise reduction system, it is characterized in that: described elastic component A and elastic component B is damping spring, described latch is set screw nut.
4. a kind of Large Copacity as claimed in claim 3 adjustable simulation test load noise reduction system, is characterized in that: described screw diameter mates with constant aperture; Described screw rod is provided with adjustment screw thread, and on described screw thread, be provided with the hinge last that anti-locking nut comes off.
5. a kind of Large Copacity as claimed in claim 1 adjustable simulation test load noise reduction system, is characterized in that: be provided with resilient nonmetallic noise reduction block below the screw rod of described elastic device.
6. a kind of Large Copacity as claimed in claim 3 adjustable simulation test load noise reduction system, it is characterized in that: described damping spring is the stage clip of metal spring wire material coiling, its surface is the combination of one or more in original material color, coating corrosion-inhibiting coating and parcel anti-corrosion material.
7. a kind of Large Copacity as claimed in claim 6 adjustable simulation test load noise reduction system, is characterized in that: described damping spring shape be cylindrical, single taper shape, double cone shape, irregular cycle or square in the combination of one or more.
8. a kind of Large Copacity as claimed in claim 7 adjustable simulation test load noise reduction system, is characterized in that: the elastic device be arranged on each described blade is equal pitch, pitches or the combination of the two to the pitch on described axle.
9. a kind of Large Copacity as claimed in claim 8 adjustable simulation test load noise reduction system, is characterized in that: the cross section of described steel wire is for circular; One in square, rectangle, triangle, regular polygon or irregular polygon.
10. a kind of Large Copacity as claimed in claim 5 adjustable simulation test load noise reduction system, it is characterized in that: described noise reduction block external diameter is equal with damping spring minimum diameter, described internal diameter is greater than adjusting screw rod external diameter 1mm-2mm, and thickness is any positive integer being greater than 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334505.1A CN105275890A (en) | 2014-07-15 | 2014-07-15 | High-capacity adjustable simulation test load noise-reduction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410334505.1A CN105275890A (en) | 2014-07-15 | 2014-07-15 | High-capacity adjustable simulation test load noise-reduction system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105275890A true CN105275890A (en) | 2016-01-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410334505.1A Pending CN105275890A (en) | 2014-07-15 | 2014-07-15 | High-capacity adjustable simulation test load noise-reduction system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150460A (en) * | 2017-12-21 | 2018-06-12 | 合肥通用制冷设备有限公司 | A kind of axial flow blower noise-reducing bracket |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4152095A (en) * | 1977-09-22 | 1979-05-01 | Western Engineering & Mfg. Co., Inc. | Fan operator lever vibration dampener |
| DE4240776C1 (en) * | 1992-12-04 | 1994-03-17 | Daimler Benz Ag | Fixing system for fan motor in housing with motor holder receiving motor - supports motor radially and has motor axially fixed also provided with cage rigidly fixed at housing concentrically surrounding motor holder with gap. |
| US5308224A (en) * | 1992-02-10 | 1994-05-03 | Olivetti-Canon Industriale S.P.A. | Antivibration suspension device for a blower |
| CN1409016A (en) * | 2001-09-25 | 2003-04-09 | 王家年 | Energy saving centrifugal ventilator |
| CN201496328U (en) * | 2009-08-19 | 2010-06-02 | 精英电脑股份有限公司 | Fan shock absorption structure |
| CN201513359U (en) * | 2009-10-19 | 2010-06-23 | 浙江浩龙风机有限公司 | Centrifugal fan of cabinet type |
-
2014
- 2014-07-15 CN CN201410334505.1A patent/CN105275890A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4152095A (en) * | 1977-09-22 | 1979-05-01 | Western Engineering & Mfg. Co., Inc. | Fan operator lever vibration dampener |
| US5308224A (en) * | 1992-02-10 | 1994-05-03 | Olivetti-Canon Industriale S.P.A. | Antivibration suspension device for a blower |
| DE4240776C1 (en) * | 1992-12-04 | 1994-03-17 | Daimler Benz Ag | Fixing system for fan motor in housing with motor holder receiving motor - supports motor radially and has motor axially fixed also provided with cage rigidly fixed at housing concentrically surrounding motor holder with gap. |
| CN1409016A (en) * | 2001-09-25 | 2003-04-09 | 王家年 | Energy saving centrifugal ventilator |
| CN201496328U (en) * | 2009-08-19 | 2010-06-02 | 精英电脑股份有限公司 | Fan shock absorption structure |
| CN201513359U (en) * | 2009-10-19 | 2010-06-23 | 浙江浩龙风机有限公司 | Centrifugal fan of cabinet type |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150460A (en) * | 2017-12-21 | 2018-06-12 | 合肥通用制冷设备有限公司 | A kind of axial flow blower noise-reducing bracket |
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Application publication date: 20160127 |
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