CN210004014U - honeycomb rubber lining type pressure pulsation attenuator - Google Patents
honeycomb rubber lining type pressure pulsation attenuator Download PDFInfo
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- CN210004014U CN210004014U CN201920797718.6U CN201920797718U CN210004014U CN 210004014 U CN210004014 U CN 210004014U CN 201920797718 U CN201920797718 U CN 201920797718U CN 210004014 U CN210004014 U CN 210004014U
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- 230000010349 pulsation Effects 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 10
- 239000012530 fluid Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 abstract 2
- 238000013016 damping Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Abstract
The utility model discloses an honeycomb rubber lining formula pressure pulsation attenuator, including left end cover, adjusting spring, axial honeycomb pipe, radial honeycomb pipe, casing and right-hand member lid etc, left end cover and right-hand member lid center are opened respectively has import and export, axial honeycomb pipe is close to the import, it has axial honeycomb blind hole to open, the direction in hole is the same with the liquid flow direction, adopt adjusting spring to carry out axial positioning between with the left end cover, adjusting spring rigidity is less than rubber rigidity, radial honeycomb pipe is close to the export, it has radial honeycomb hole to open, the direction in hole is perpendicular with the liquid flow direction, adopt boss and left end cover to carry out axial positioning, axial honeycomb pipe and radial honeycomb pipe line are lined in the casing, its central hole diameter all is greater than the centre bore diameter of casing, left end cover and right-hand member lid.
Description
Technical Field
The utility model relates to an kind pressure pulsation attenuator, concretely relates to kind honeycomb rubber lining formula pressure pulsation attenuator.
Background
When the hydraulic pump (especially a plunger pump and a gear pump) works, due to the inherent characteristics, the output working medium of the hydraulic pump has flow pulsation of dozens to hundreds of hertz, and the flow pulsation can excite pressure pulsation with the same frequency and harmonic frequency when flowing through a pipeline, a valve port, an execution element and other loads.
Therefore, a pressure pulsation attenuator with a frequency spectrum needs to be developed to effectively attenuate the pressure pulsation in the hydraulic system, further well inhibit the pipeline vibration and the fluid noise, and provide technical support for vibration and noise reduction of the hydraulic system.
SUMMERY OF THE UTILITY MODEL
The characteristics to pressure pulsation frequency spectrum among the hydraulic system, the utility model provides a kind of honeycomb rubber lining formula pressure pulsation attenuator to the realization is to pressure pulsation attenuator's wide frequency attenuation, and then restraines pipe-line system's vibration and noise.
honeycomb rubber lining type pressure pulsation attenuator comprises a left end cover, an O-shaped ring, an adjusting spring, an axial honeycomb tube, a radial honeycomb tube, a shell, a spring gasket, an inner hexagon screw, a right end cover and the like, wherein the center of the left end cover and the center of the right end cover are respectively provided with an inlet and an outlet and are connected to the shell through the inner hexagon screw, the left end cover and the right end cover are provided with the O-shaped ring for radial sealing, the shell is internally lined with the axial honeycomb tube and the radial honeycomb tube, the center of the axial honeycomb tube is a through hole and is close to the inlet, the adjusting spring is adopted between the axial honeycomb tube and the left end cover for axial positioning and adjusting the deformation of the axial honeycomb tube, the center of the radial honeycomb tube is a through hole and is close to the outlet.
And , opening an axial honeycomb hole in the axial honeycomb tube, wherein the direction of the hole is the same as the liquid flow direction, the hole is used for adjusting the natural frequency of the rubber and attenuating low-frequency pressure pulsation, and the honeycomb hole is a blind hole and is not provided with a honeycomb hole close to the inlet.
, the radial honeycomb tube is perforated with radial honeycomb holes oriented perpendicular to the direction of fluid flow to attenuate high frequency pressure pulsations.
, the shell is hollow, a boss is arranged in the middle of the shell, a central hole is formed in the boss, and the diameter of the central hole is the same as that of the left end cover and the right end cover and is smaller than that of the axial honeycomb tube and that of the radial honeycomb tube.
, the stiffness of the adjusting spring is less than the rubber stiffness of the axial honeycomb tube.
And , forming a Helmholtz attenuator by the inlet of the left end cover, the central through hole of the axial honeycomb pipe and the central hole of the boss, and forming a second Helmholtz attenuator by the central hole of the boss, the central through hole of the radial honeycomb pipe and the outlet of the right end cover.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) pulsating liquid enters from an inlet of the left end cover, sequentially passes through the axial honeycomb tube and the longitudinal honeycomb tube, and then flows out from an outlet of the right end cover. The compression and expansion of the axial honeycomb pipe can attenuate low-frequency pressure pulsation and inhibit harmonic frequency high-frequency pulsation; two helmholtz attenuators may be used to attenuate medium frequency pressure pulsations; the damping effect of the radial honeycomb cells can be used to damp high frequency pressure pulsations. The attenuation of the pressure pulsation in the wide frequency band can be realized by combining three different attenuation methods.
(2) The liquid does not enter the axial honeycomb holes, but the size of the liquid can be changed, so that the natural frequency of the axial honeycomb pipe is changed, and the aim of adjusting the low-frequency pressure pulsation attenuation frequency is fulfilled; the size of the longitudinal cells can also be varied to adjust the high frequency pressure pulsation attenuation frequency. If the working conditions (pressure pulsation frequency, pressure and the like) change, the best attenuation effect can be realized only by replacing the axial honeycomb pipe and the radial honeycomb pipe.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a schematic view of an axial honeycomb tube structure;
FIG. 3 is a schematic view of a radial honeycomb tube structure;
FIG. 4 is a schematic illustration of the position of fluid flow through the attenuator passage.
The above figures are labeled as: 1. a left end cap; 2. an O-shaped ring; 3. adjusting the spring; 4. an axial honeycomb tube; 5. a radial honeycomb tube; 6. a housing; 7. a spring washer; 8. a socket head cap screw; 9. a right end cap; 10. axial honeycomb holes; 11. radial honeycomb holes; 12. an inlet; 13. a central through hole of the axial honeycomb tube; 14. a boss central hole; 15. a radial honeycomb tube central through hole; 16. and (7) an outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in with reference to the accompanying drawings and embodiments.
FIG. 1 shows embodiments of the present invention, which includes a left end cap 1, an O-ring 2, an adjusting spring 3, an axial honeycomb tube 4, a radial honeycomb tube 5, a housing 6, a spring washer 7, an inner hexagon screw 8 and a right end cap 9, wherein the center of the left end cap 1 and the right end cap 9 are respectively opened with an inlet 12 and an outlet 16, and are connected to the housing 6 by the inner hexagon screw 8, and the left end cap 1 and the right end cap 9 are installed with the O-ring 2 for radial sealing, the housing 6 is internally lined with the axial honeycomb tube 4 and the radial honeycomb tube 5, the axial honeycomb tube 4 is close to the inlet 12, and is axially positioned with the left end cap 1 by the adjusting spring 3, and the radial honeycomb tube 5 is close to the outlet 16, and is axially positioned by the boss and the left end cap 1. the housing 6 is of a hollow structure, the boss is provided in the middle, the boss is provided with a central hole 14, and the diameter of the central hole 14 is the same as the diameter of the left end cap 1 and the right end cap 9, and.
The axial honeycomb tube 4 is provided with an axial honeycomb hole 10, the direction of the hole is the same as the direction of liquid flow, and the axial honeycomb hole 10 is a blind hole and is not provided with a honeycomb hole close to an inlet for adjusting the natural frequency of honeycomb rubber so as to attenuate low-frequency pressure pulsation; the center of the axial honeycomb tube 4 is provided with a through hole 13, and fig. 2 is a structural schematic diagram of the axial honeycomb tube 4.
Fig. 3 is a schematic structural view of radial honeycomb tubes 5, wherein the radial honeycomb tubes 5 are provided with radial honeycomb holes 11, the direction of the holes is perpendicular to the direction of liquid flow, and the radial honeycomb tubes 5 are provided with through holes 15 at the centers.
An inlet 12 at the left end cover 1, a central through hole 13 of the axial honeycomb tube and a central through hole 14 of the boss form Helmholtz attenuators, a central through hole 14 of the boss, a central through hole 15 of the radial honeycomb tube and an outlet 16 at the right end cover 9 form a second Helmholtz attenuator, liquid enters from the inlet 12 and then flows to the outlet 16 through the central through hole 13 of the axial honeycomb tube, the central through hole 14 of the boss and the central through hole 15 of the radial honeycomb tube in sequence, pressure pulsation is low frequency, when the pressure is high, the axial honeycomb tube 4 and the radial honeycomb tube 5 can be greatly deformed, when the pressure is low, the deformation of the axial honeycomb tube 4 and the radial honeycomb tube 5 is small, so that the deformation is changed continuously, the pressure pulsation is absorbed and attenuated, when the pressure pulsation is medium frequency, the pressure pulsation can be attenuated by two Helmholtz attenuators, when the pressure pulsation is high frequency, the damping effect of the radial honeycomb tube 11 on the radial honeycomb tube 5 can attenuate the pressure pulsation, and in sum, no matter how much the frequency of the pressure pulsation is low frequency or no matter whether the frequency of the pressure pulsation generates harmonic pressure pulsation, the high frequency pulsation, the radial honeycomb tube 4 and the radial honeycomb tube.
The number and shape dimensions of the axial honeycomb tubes 4 and the radial honeycomb tubes 5 are determined and adjusted according to the length, diameter and pressure pulsation damping performance requirements of the shell 6. As the shapes, sizes and distributions of the axial honeycomb holes 10 and the radial honeycomb holes 11 are determined and adjusted according to the diameters of the axial honeycomb tubes 4 and the radial honeycomb tubes 5 and the pressure pulsation damping performance requirements, the axial honeycomb holes 10 and the axial honeycomb holes 11 are regular hexagons and are circumferentially symmetrically distributed in view of the most effective aspect.
The above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (6)
- The honeycomb rubber lining type pressure pulsation attenuator is characterized by comprising a left end cover, an O-shaped ring, an adjusting spring, an axial honeycomb pipe, a radial honeycomb pipe, a shell, a spring gasket, an inner hexagonal screw and a right end cover, wherein the centers of the left end cover and the right end cover are respectively provided with an inlet and an outlet and are connected to the shell through the inner hexagonal screw, the left end cover and the right end cover are provided with the O-shaped ring for radial sealing, the shell is of a hollow structure, the middle of the shell is provided with a boss, a central hole is formed in the boss, the axial honeycomb pipe is close to the inlet, the radial honeycomb pipe is close to the outlet, the centers of the axial honeycomb pipe and the radial honeycomb pipe are through holes.
- 2. The rubber-lined honeycomb type pressure pulsation damper, according to claim 1, wherein the axial honeycomb tube has axial honeycomb holes in the same direction as the liquid flow, the honeycomb holes are blind and have no honeycomb holes near the inlet.
- 3. The rubber-lined honeycomb pressure pulsation attenuator of claim 1, wherein said radial honeycomb tubes are perforated with radial honeycomb holes oriented perpendicular to the direction of fluid flow.
- 4. The kind of honeycomb rubber lining type pressure pulsation attenuator of claim 1, wherein the diameter of the center hole of the boss of the shell is the same as the diameters of the left end cover and the right end cover, and both are smaller than the diameters of the axial honeycomb tube and the radial honeycomb tube.
- 5. The lining type pressure pulsation attenuator of claim 1, wherein the axial honeycomb tube and the left end cap are axially positioned and deformed by an adjusting spring, and the radial honeycomb tube is axially positioned by a boss and the left end cap.
- 6. The honeycomb rubber-lined pressure pulsation attenuator of claim 1 or 5, wherein the stiffness of the tuning spring is less than the rubber stiffness of the axial honeycomb tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797718.6U CN210004014U (en) | 2019-05-29 | 2019-05-29 | honeycomb rubber lining type pressure pulsation attenuator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920797718.6U CN210004014U (en) | 2019-05-29 | 2019-05-29 | honeycomb rubber lining type pressure pulsation attenuator |
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| Publication Number | Publication Date |
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| CN210004014U true CN210004014U (en) | 2020-01-31 |
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| CN201920797718.6U Active CN210004014U (en) | 2019-05-29 | 2019-05-29 | honeycomb rubber lining type pressure pulsation attenuator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056737A (en) * | 2019-05-29 | 2019-07-26 | 青岛科技大学 | A kind of honeycomb rubber lining formula pressure fluctuation attenuator |
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- 2019-05-29 CN CN201920797718.6U patent/CN210004014U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056737A (en) * | 2019-05-29 | 2019-07-26 | 青岛科技大学 | A kind of honeycomb rubber lining formula pressure fluctuation attenuator |
| CN110056737B (en) * | 2019-05-29 | 2024-06-04 | 青岛科技大学 | Honeycomb rubber lining type pressure pulsation attenuator |
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