CN214063657U - Fluid pulse damper - Google Patents
Fluid pulse damper Download PDFInfo
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- CN214063657U CN214063657U CN202022626491.4U CN202022626491U CN214063657U CN 214063657 U CN214063657 U CN 214063657U CN 202022626491 U CN202022626491 U CN 202022626491U CN 214063657 U CN214063657 U CN 214063657U
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- fluid pulse
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Abstract
The utility model provides a fluid pulse damper, a serial communication port, fluid pulse damper includes: the damper comprises a top limiting cover, a top buffer film, a damper body, a bottom buffer film and a bottom limiting cover which are sequentially arranged along the axial direction; the top limiting cover, the top buffer film and the damper body are fixedly connected, and the bottom limiting cover, the bottom buffer film and the damper body are fixedly connected; the top buffer film, the interior of the damper body and the bottom buffer film form a fluid cavity in a surrounding mode; the top limiting cover and the top buffer film form a top buffer cavity, and the bottom limiting cover and the bottom buffer film form a bottom buffer cavity.
Description
Technical Field
The utility model relates to a fluid delivery instrument technical field especially relates to a fluid pulse damper.
Background
The transport of corrosive or dangerous fluids in laboratories is generally carried out by means of peristaltic pumps, which have the advantages of being not in direct contact with the transported fluids, safe, hygienic, easy to clean, free of pollution, and convenient to maintain, and are accepted and adopted by an increasing number of industries. When the existing peristaltic pump works, the problems of instable instantaneous flow and flow speed of fluid and large fluctuation amplitude are easily caused due to flow pulsation of fluid in a pipeline.
Chinese utility model patent of grant publication No. CN210661887U discloses a diaphragm formula pulse damper, including last casing, lower casing, the top of going up the casing is provided with the inflation valve of intercommunication upper housing and connects the manometer on the inflation valve, and the interface has been seted up to the bottom of lower casing, goes up the casing and is provided with the diaphragm down between the casing, is equipped with the iron sheet with the diaphragm laminating on the terminal surface of casing on the diaphragm orientation. The utility model discloses a have the effect that improves diaphragm structural strength, solved air pressure and leaded to the diaphragm easily damaged greatly, impel the unable normal use's of pulse damper problem, nevertheless have following shortcoming: the single-layer diaphragm is large in thickness, the thick diaphragm is also large in rigidity, the rectification effect is affected, if a pipeline is blocked, the single-chip type pulse damper can cause liquid overflow due to the fact that the buffer film is broken, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a reasonable in design, the rectification is effectual, buffer film adaptation wide range, have explosion-proof performance and the high fluid pulse damper of security.
The fluid pulse dampener comprises: the damper comprises a top limiting cover, a top buffer film, a damper body, a bottom buffer film and a bottom limiting cover which are sequentially arranged along the axial direction;
the top limiting cover, the top buffer film and the damper body are fixedly connected, and the bottom limiting cover, the bottom buffer film and the damper body are fixedly connected;
the top buffer film, the interior of the damper body and the bottom buffer film form a fluid cavity in a surrounding mode;
the top limiting cover and the top buffer film form a top buffer cavity, and the bottom limiting cover and the bottom buffer film form a bottom buffer cavity.
Furthermore, the inner wall of the damper body is connected with turbulence wings, and the cross sections of the turbulence wings are in an inverted V shape.
Furthermore, the fluid pulse damper body is provided with an input hole and an output hole, the input hole and the output hole are correspondingly provided with an input interface and an output interface, and the input interface and the output interface are connected with the input hole and the output hole in a sealing manner.
Further, the sealing connection is as follows: and (4) connecting the threads in a sealing manner.
Furthermore, the top limiting cover, the top buffer film and the damper body are fixedly connected through screws, and the bottom limiting cover, the bottom buffer film and the damper body are fixedly connected through screws.
Further, the attenuator body is provided with the screw hole, the spacing lid in top, top buffer film, the spacing lid in bottom and bottom buffer film are provided with the mounting hole.
Furthermore, a top pressure ring is arranged between the top limiting cover and the top buffer film, and a bottom pressure ring is arranged between the bottom limiting cover and the bottom buffer film.
Furthermore, the bottom surfaces of the top pressing ring and the bottom pressing ring are provided with grooves, and the opening diameters of the grooves are larger than the outer diameter of the damper body.
Furthermore, the top buffer film and the bottom buffer film are both made of elastic materials.
The utility model has the advantages as follows:
1. fluid pulse damper adopts two side buffer film, two side clamping rings and two side spacing lid symmetrical arrangement's mode, overcomes the great shortcoming of individual layer buffer film thickness, makes the thickness selectivity of buffer film wideer.
2. The utility model discloses a fluid pulse damper's attenuator is provided with the vortex wing in vivo, is used for on the one hand changing the laminar flow of the fluid of input interface into the torrent, consumes fluidic some pulsating energy; on the other hand, the buffer film is used for shunting the fluid at the input interface to the buffer film, and the buffer film absorbs and stabilizes the action of the pulse energy of the fluid.
3. Fluid pulse damper adopts the design of two side buffer film, promotes on the one hand fluid pulse damper's rectification efficiency, on the other hand have solved the not good problem of current monolithic formula pulse damper rectification effect.
4. The surface of the buffer film that fluid pulse damper set up has clamping ring and spacing lid, protects the buffer film on the one hand and does not receive pipeline pressure or sharp object to destroy, prevents that the fluid is excessive, and on the other hand makes fluid pulse damper possesses explosion-proof function, eliminates the potential safety hazard.
Drawings
FIG. 1 is an exploded perspective view of the fluid pulse dampener;
FIG. 2 is a schematic structural view of the damper body of FIG. 1;
FIG. 3 is a top view of the fluid pulse dampener;
FIG. 4 is a schematic sectional view taken along line A-A of FIG. 3;
FIG. 5 is a graph of measured fluid flow data without the use of the fluid pulse dampener;
FIG. 6 is a graph of measured fluid flow data using a single-sided damper;
fig. 7 shows experimental data measured in a state where the fluid pulse damper is used.
The labels in the figure are: 1-a top limit cover; 2-top buffer film; 3-a damper body, 31-a spoiler, 32-an input hole, 33-an output hole and 34-a threaded hole; 4-bottom buffer film; 5-a bottom limit cover; 6-input interface, 7-output interface; 8-mounting holes; 9-a screw; 10-top compression ring; 11-a bottom compression ring; 12-a fluid chamber; 13-a top buffer chamber; 14-bottom buffer chamber.
Detailed Description
In order to make the technical field of the present invention better understand, the present invention is further described in detail with reference to the drawings and the detailed description.
As shown in fig. 1, the fluid pulse dampener comprises: the damper comprises a top limiting cover 1, a top pressing ring 10, a top buffer film 2, a bottom pressing ring 11, a damper body 3, a bottom buffer film 4, a bottom limiting cover 5, an input interface 6, an output interface 7 and screws 9.
As shown in fig. 1 and 4, the top limit cover 1, the top buffer film 2 and the damper body 3 are fixedly connected, and the bottom limit cover 4, the bottom buffer film 5 and the damper body 3 are fixedly connected; the top limiting cover 1, the top buffer film 2, the damper body 3, the bottom limiting cover 4 and the bottom buffer film 5 are sequentially arranged along the axial direction; wherein, the top buffer film 2, the inside of the damper body 3 and the bottom buffer film 5 enclose into a fluid cavity 12, the top limit cover 1 and the top buffer film 2 form a top buffer cavity 13, and the bottom limit cover 5 and the bottom buffer film 4 form a bottom buffer cavity 14.
As shown in fig. 4, the fluid chamber 12 is interposed between the damper body 3 and the top and bottom buffer films 2 and 4, and the fluid chamber 12 is used for stabilizing the fluid pulse valley and buffering the fluid pulse peak when the fluid pulse at the input port 6 is at the valley or peak.
As shown in fig. 4, the top buffer chamber 13 and the bottom buffer chamber 14 are used to absorb or release the pulsating energy generated when the fluid hits the top buffer membrane 2 and the bottom buffer membrane 4, respectively.
The top limit cover 1 and the bottom limit cover 5 are respectively arranged at the top end and the bottom end of the fluid pulse damper and have the functions of limiting the maximum deformation amount of the top buffer membrane 2 and the bottom buffer membrane 4 and avoiding the impact of fluid pressure.
As shown in fig. 1, the top limit cover 1 and the bottom limit cover 5 limit the size range of the top buffer film 2 and the bottom buffer film 4 from the two ends of the fluid pulse damper, and secondly, the top limit cover 1 and the bottom limit cover 5 not only protect the top buffer film 2 and the bottom buffer film 4 on the inner side from being scratched by sharp objects, thereby avoiding the hiding of liquid overflow, but also protect the top buffer film 2 and the bottom buffer film 4 from being impacted by fluid pressure in a pipeline caused by the blockage of an output pipeline on the outer side, so that the fluid pulse damper has the explosion-proof capability, and the selection range of the top buffer film 2 and the bottom buffer film 4 is widened by the arrangement mode of the top limit cover 1 and the bottom limit cover 5.
Further, as shown in fig. 1, the inner wall of the damper body 3 is provided with the spoiler 31, the cross section of the spoiler 31 is inverted V-shaped, and the spoiler 31 is provided in the inverted V-shape, so that on one hand, laminar flow of fluid at the input interface 6 can be converted into turbulent flow, and part of pulsating energy of the fluid is consumed; on the other hand, the fluid at the input interface 6 can be shunted to the top buffer film 2 and the bottom buffer film 4 and absorbed by the top buffer film 2 and the bottom buffer film 4, so that the pulse energy of the fluid is stabilized.
Further, as shown in fig. 1, an input hole 32 and an output hole 33 provided in the fluid pulse damper body are correspondingly provided with an input interface 6 and an output interface 7, and the input interface 6 and the output interface 7 are respectively connected with the input hole 32 and the output hole 33 in a sealing manner by using threads.
Further, as shown in fig. 1, the input hole 32 and the output hole 33 are symmetrically disposed at both sides of the damper body 3.
Further, as shown in fig. 1, the top limit cover 1, the top cushion film 2 and the damper body 3 are fixedly connected by screws 9, and the bottom limit cover 5, the bottom cushion film 4 and the damper body 3 are fixedly connected by screws 9.
Further, as shown in fig. 1, the top limiting cover 1 and the top buffer film 2 are sequentially stacked from top to bottom along the vertical arrangement direction, and the bottom limiting cover 5 and the bottom buffer film 4 are sequentially stacked from bottom to top along the vertical arrangement direction.
Further, as shown in fig. 1, the damper body 3 is provided with a threaded hole 34, and the top limit cover 1, the top cushion film 2, the bottom limit cover 5 and the bottom cushion film 4 are all provided with mounting holes 8.
Further, as shown in fig. 1, the set positions and the number of the threaded holes 34 correspond to the mounting holes 8, and in order to ensure that whether the superposition between each layer of the top limit cover 1, the top buffer film 2, the damper body 3, the bottom limit cover 5 and the bottom buffer film 4 is accurate, the accuracy of the vertical superposition is judged by confirming whether the mounting holes 8 between each layer are communicated with the threaded holes 34.
Further, as shown in fig. 1, a top pressure ring 10 is disposed between the top limit cover 1 and the top buffer film 2, and a bottom pressure ring 11 is disposed between the bottom limit cover 5 and the bottom buffer film 4.
Further, as shown in fig. 1, the bottom surfaces of the top and bottom press rings 10 and 11 have grooves (not shown in the drawings) having an opening diameter larger than the outer diameter of the damper body 3.
As shown in fig. 1 and fig. 2, in the present embodiment, the top buffer film 2, the bottom buffer film 4, the top pressure ring 10, the bottom pressure ring 11, the top limit cover 1, and the bottom limit cover 5 of the fluid pulse damper are respectively disposed above and below the damper body 3 in a bilateral symmetrical arrangement manner; compared with a single-side buffer membrane design, the double-side buffer membrane design can effectively balance the pressure on the left side and the pressure on the right side in the fluid pulse damper, and has better buffering efficiency on fluid.
Further, the top buffer film 2 and the bottom buffer film 4 are both made of elastic materials.
The applicant needs to explain that the top buffer film 2 and the bottom buffer film 4 with different specifications and materials can be arranged according to the requirements of a fluid system, most of the existing dampers adopt single-layer buffer films, the thickness of the films is thick, the elasticity of the films is poor, in the embodiment, the top buffer film 2 and the bottom buffer film 4 respectively adopt silica gel membranes, the thickness of the silica gel membranes is 0.1mm to 0.2mm, the sensitivity of the thick top buffer film 2 or the thick bottom buffer film 4 to the fluid pulsation buffering is poor, otherwise, the sensitivity to the fluid pulsation buffering is high, and further, the pulse flow can be buffered more effectively; in addition, the thickness of the buffer film can be selected according to the flow rate of the fluid.
The working principle of the fluid pulse damper is described in detail below with reference to fig. 1 to 2.
As shown in fig. 1, a delivery pipe for injecting fluid is inserted into the input interface 6 and flows into the cavity of the fluid pulse damper, the fluid is divided inside the fluid cavity 12 under the action of the spoiler 31, a part of the fluid forms turbulent flow from laminar flow, the other part of the fluid is divided into the top buffer membrane 2 and the bottom buffer membrane 4 and collides with the top buffer membrane 2 and the bottom buffer membrane 4, because the top buffer membrane 2 and the bottom buffer membrane 4 have corresponding elasticity, the top buffer membrane 2 and the bottom buffer membrane 4 respectively expand and buffer towards the top buffer cavity 13 and the bottom buffer cavity 14 on both sides and absorb the pulsating energy of the fluid, and the fluid divided and buffered by the fluid pulse damper flows out of the fluid pulse damper through the output interface 7 and into the output pipe.
When the fluid at the input interface 6 of the fluid pulse damper is in a pulse peak, the pressure in the fluid cavity becomes large, one way is to reduce the pressure in the fluid cavity 12 through a manual adjustment way, the other way is to expand towards the top buffer cavity 13 and the bottom buffer cavity 14 through the top buffer film 2 and the bottom buffer film 4, and as the pulse energy is absorbed by the buffer films, the volume of the fluid cavity becomes large, and the pulse peak is buffered.
When the fluid at the input interface 6 of the fluid pulse damper is in the pulse valley, the pressure in the fluid cavity becomes small, one mode is to increase the pressure in the fluid cavity 12 by adjusting the flow of the fluid through the manual control valve, the other mode is to respectively contract towards the direction of the fluid cavity 12 through the top buffer film 2 and the bottom buffer film 4, the top buffer film 2 and the bottom buffer film 4 release the energy absorbed when the pulse peak is generated, the volume of the fluid cavity is reduced, and the buffer films extrude the fluid to flow out of the fluid cavity 12, so that the flow pulse valley is stabilized.
To further illustrate that the fluid pulse damper of the present invention is superior to a unilateral pulse damper, comparison was made through specific experiments. The experiment is carried out under normal atmospheric temperature and pressure state, and transmission medium adopts water, TRUFLOW flow measurement appearance, and other instruments and parts that use in the experiment are BT100S driver, YZ15 pump head, 14# silica gel hose, and rotational speed 10rpm can clearly be seen from fig. 5-7, the utility model discloses fluid pulse damper transmission fluidic performance is superior to unilateral pulse damper, and the wave form is more steady, and the fluctuation is very little.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (9)
1. A fluid pulse dampener, comprising: the damper comprises a top limiting cover, a top buffer film, a damper body, a bottom buffer film and a bottom limiting cover which are sequentially arranged along the axial direction;
the top limiting cover, the top buffer film and the damper body are fixedly connected, and the bottom limiting cover, the bottom buffer film and the damper body are fixedly connected;
the top buffer film, the interior of the damper body and the bottom buffer film form a fluid cavity in a surrounding mode;
the top limiting cover and the top buffer film form a top buffer cavity, and the bottom limiting cover and the bottom buffer film form a bottom buffer cavity.
2. The fluid pulse damper of claim 1, wherein the inner wall of the damper body is connected to turbulators, the turbulators having an inverted V-shaped cross-section.
3. The fluid pulse damper as recited in claim 2, wherein the fluid pulse damper body is provided with an input hole and an output hole, the input hole and the output hole are correspondingly provided with an input interface and an output interface, and the input interface and the output interface are hermetically connected with the input hole and the output hole.
4. The fluid pulse dampener of claim 3, wherein the sealed connection is: and (4) connecting the threads in a sealing manner.
5. The fluid pulse damper of claim 1, wherein the top limit cap, the top dampening membrane, and the damper body are fixedly attached by screws, and the bottom limit cap, the bottom dampening membrane, and the damper body are fixedly attached by screws.
6. The fluid pulse damper of claim 1, wherein the damper body is provided with a threaded hole, and the top limit cap, the top cushion membrane, the bottom limit cap, and the bottom cushion membrane are provided with mounting holes.
7. The fluid pulse damper of claim 1, wherein a top compression ring is disposed between the top limiting cap and the top buffer membrane, and a bottom compression ring is disposed between the bottom limiting cap and the bottom buffer membrane.
8. The fluid pulse damper of claim 7, wherein the bottom surfaces of the top and bottom compression rings have grooves with an opening diameter larger than the outer diameter of the damper body.
9. The fluid pulse dampener of claim 1, wherein the top dampening membrane and the bottom dampening membrane are each made of an elastic material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022626491.4U CN214063657U (en) | 2020-11-13 | 2020-11-13 | Fluid pulse damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022626491.4U CN214063657U (en) | 2020-11-13 | 2020-11-13 | Fluid pulse damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063657U true CN214063657U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022626491.4U Active CN214063657U (en) | 2020-11-13 | 2020-11-13 | Fluid pulse damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063657U (en) |
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2020
- 2020-11-13 CN CN202022626491.4U patent/CN214063657U/en active Active
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