CN212361234U - Double-diaphragm type pulse damper - Google Patents
Double-diaphragm type pulse damper Download PDFInfo
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- CN212361234U CN212361234U CN202021024402.2U CN202021024402U CN212361234U CN 212361234 U CN212361234 U CN 212361234U CN 202021024402 U CN202021024402 U CN 202021024402U CN 212361234 U CN212361234 U CN 212361234U
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Abstract
The utility model provides a double-diaphragm pulse damper, including import flange and the middle cavity body that links to each other with the import flange, the import flange links to each other with the middle section position outer wall of middle cavity body, middle cavity body is the tube-shape, and its both ends are equipped with the bowl form baffle of indent toward middle cavity body middle section position direction, be equipped with the damping hole of seting up to logical on the bowl form baffle; the two ends of the middle cavity body are respectively provided with a flange cover body, a diaphragm cavity is formed between the flange cover body and the bowl-shaped partition plate, a diaphragm is arranged in the diaphragm cavity, and the diaphragm divides the diaphragm cavity into a buffer cavity and a damping cavity connected with the inner cavity of the middle cavity body; the buffer chambers at the left end and the right end of the middle cavity body are communicated with each other, and the buffer chambers are connected with a pressure gauge and an air charging and discharging port. The utility model has the advantages of strong bearing capacity, compact volume and good damping effect.
Description
Technical Field
The utility model relates to a attenuator field, concretely relates to two diaphragm type pulse damper.
Background
The pulsation damper is a common element for eliminating pipeline pulsation, is used for smoothing pipeline pulsation and water hammer phenomenon of a system caused by volumetric pumps such as a metering pump, a pneumatic diaphragm pump and the like, and is characterized in that gas is isolated from liquid in a pipeline by a corrosion-resistant diaphragm, and the pipeline pulsation is smoothed by the change of the volume of an air chamber, so that the harm of the water hammer to the system is reduced, the peak value of flow velocity fluctuation is reduced, the pipeline and a valve joint are protected from being impacted by pressure fluctuation, and the energy consumption of the system is reduced.
The existing diaphragm type pulsation buffer is in inverse proportion to the volume of gas and the pressure of the gas according to the Boyle's law, smoothes pipeline pulses by changing the volume of the gas, has a sinusoidal system effect on the flow velocity, and is used in the process of wave crest: the air chamber volume diminishes, and the pulsation damper absorbs unnecessary flow liquid, during the trough: the air chamber volume grow, the liquid of release storage to reach smooth pulsating effect, nevertheless because the diaphragm can hug closely buffer cavity inner wall at the during operation, consequently can cause liquid to fill rapidly or discharge rapidly because of hugging closely too between diaphragm and the buffer cavity inner wall when receiving the pulsation, cause to hold breath and influence its reaction rate.
SUMMERY OF THE UTILITY MODEL
Based on the problem, the utility model aims to provide a bearing capacity is strong, compact, the good two diaphragm type pulse damper of buffering damping effect.
Aiming at the problems, the following technical scheme is provided: a double-diaphragm type pulse damper comprises an inlet flange and a middle cavity body connected with the inlet flange, wherein the inlet flange is connected with the outer wall of the middle section of the middle cavity body, the middle cavity body is cylindrical, bowl-shaped partition plates which are concave towards the middle section of the middle cavity body are arranged at two ends of the middle cavity body, and damping holes which are communicated with each other are formed in the bowl-shaped partition plates; the two ends of the middle cavity body are respectively provided with a flange cover body, a diaphragm cavity is formed between the flange cover body and the bowl-shaped partition plate, a diaphragm is arranged in the diaphragm cavity, and the diaphragm divides the diaphragm cavity into a buffer cavity and a damping cavity connected with the inner cavity of the middle cavity body; the buffer chambers at the left end and the right end of the middle cavity body are communicated with each other, and the buffer chambers are connected with a pressure gauge and an air charging and discharging port.
In the structure, the diaphragm cavities are arranged at the two ends of the middle cavity body, so that pulse pressure is buffered once when entering the middle cavity body through the inlet flange, then flows to the two sides, enters the damping cavity through the damping holes, pushes the diaphragm to compress the buffering cavity so as to absorb pulses and generate a damping effect at the same time, and the pulse bearing capacity is greatly enhanced by the structure; the buffer cavities are connected with each other, so that the pressure between the two buffer cavities can be effectively balanced, the two buffer cavities can work more stably and reliably, and the condition that the load intensity of one buffer cavity is overlarge due to the pressure difference between the two buffer cavities is avoided; the pressure gauge can monitor the pre-charging pressure of the buffer cavity in real time, and the pre-charging pressure can be adjusted through the charging and discharging ports to adapt to pulse damping of different pipeline pressures.
The utility model discloses further set up to, the damping hole sets up to be the equipartition setting in bowl form baffle central zone.
In the above configuration, when the pulse pressure is generated, the diaphragm can be displaced from the middle, and the amount of deformation and stress can be reduced.
The utility model discloses further set up to, the damping hole still sets up in the edge that the bowl form baffle is close to middle cavity internal wall position and along the setting of equipartition on the bowl form baffle circumference direction.
In the structure, the damping holes uniformly distributed along the peripheral position of the outer edge of the bowl-shaped partition plate can assist in controlling the deformation of the diaphragm, and meanwhile, the diaphragm can be prevented from being pressed back when recovering, so that the medium in the damping cavity can be discharged.
The utility model discloses further set up to, the diaphragm presss from both sides between the flange lid and the middle cavity body, the flange lid passes through bolted connection with the middle cavity body and fixes.
In the structure, the flange cover body and the middle cavity body are fixedly connected through the bolts and extrude the diaphragm, so that sealing and fixing of the diaphragm are realized.
The utility model discloses further set up to, the charge-discharge port sets up on the manometer.
In the structure, the pressure of filling can be detected most visually, other areas needing openings are reduced, and the reliability and the air tightness are improved.
The utility model discloses further set up to, the manometer is located the pressure that is used for detecting the cushion chamber on one of them flange lid.
In the structure, as the two buffer cavities are communicated with each other, only one pressure gauge is required to be arranged.
The utility model discloses further set up to, two cushion chambers connect the equalizer tube intercommunication on two flange lid through one.
In the structure, the pressure equalizing pipe is positioned outside the middle cavity body.
The utility model discloses further set up to, it is protruding that the flange lid is the bowl form toward the direction of bowl form baffle dorsad.
In the structure, the diaphragm can have enough deformation space when being buffered, and more variable compression spaces are provided for the buffer cavity.
The utility model discloses further set up to, be the butt joint of T font between the import flange and the middle cavity body.
In the structure, the T-shaped butt joint is beneficial to absorbing the pulse and avoiding the pulse from directly impacting the diaphragm.
The utility model has the advantages that: through the arrangement of the diaphragm cavities at the two ends of the middle cavity body, the pulse pressure is buffered once when entering the middle cavity body through the inlet flange, then flows to the two sides and enters the damping cavity through the damping holes to push the diaphragm to compress the damping cavity so as to absorb the pulse and generate a damping effect at the same time, and the pulse bearing capacity is greatly enhanced by the structure; the buffer cavities are connected with each other, so that the pressure between the two buffer cavities can be effectively balanced, the two buffer cavities can work more stably and reliably, and the condition that the load intensity of one buffer cavity is overlarge due to the pressure difference between the two buffer cavities is avoided; the pressure gauge can monitor the pre-charging pressure of the buffer cavity in real time, and the pre-charging pressure can be adjusted through the charging and discharging ports to adapt to pulse damping of different pipeline pressures.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of a half-section structure of the present invention.
Fig. 3 is a schematic diagram of the diaphragm structure of the present invention.
The reference numbers in the figures mean: 10-inlet flange; 20-a middle cavity body; 21-bowl-shaped partition plate; 211-a damping orifice; 22-a flange cover body; 23-a diaphragm chamber; 231-a buffer chamber; 232-damping chamber; 24-a membrane; 25-pressure gauge; 251-an air charge and discharge port; 26-bolt; 27-pressure equalizing pipe.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
Referring to fig. 1 to 3, the double-diaphragm pulse damper shown in fig. 1 to 3 includes an inlet flange 10 and a middle cavity body 20 connected to the inlet flange 10, the inlet flange 10 is connected to an outer wall of a middle section of the middle cavity body 20, the middle cavity body 20 is cylindrical, two ends of the middle cavity body 20 are provided with bowl-shaped partition plates 21 recessed toward the middle section of the middle cavity body 20, and the bowl-shaped partition plates 21 are provided with damping holes 211 opened in opposite directions; the two ends of the middle cavity body 20 are respectively provided with a flange cover body 22, a diaphragm cavity 23 is formed between the flange cover body 22 and the bowl-shaped partition plate 21, a diaphragm 24 is arranged in the diaphragm cavity 23, and the diaphragm 24 divides the diaphragm cavity 23 into a buffer cavity 231 and a damping cavity 232 connected with the inner cavity of the middle cavity body 20; the buffer chambers 231 at the left and right ends of the middle cavity body 20 are communicated with each other, and the buffer chambers 231 are connected with a pressure gauge 25 and an air charging and discharging port 251.
In the structure, the diaphragm cavities 23 are arranged at the two ends of the middle cavity body 20, so that pulse pressure is buffered once when entering the middle cavity body 20 through the inlet flange 10, then flows towards the two sides and enters the damping cavity 232 through the damping hole 211 to push the diaphragm 24 to compress the buffering cavity 231 so as to absorb pulses and generate a damping effect, and the pulse bearing capacity is greatly enhanced by the structure; the buffer cavities 231 are connected with each other, so that the pressure between the two buffer cavities 231 can be effectively balanced, the two buffer cavities 231 can work more stably and reliably, and the phenomenon that the load intensity of one buffer cavity 231 is overlarge due to the pressure difference between the two buffer cavities 231 is avoided; the pressure gauge 25 can monitor the pre-charging pressure of the buffer chamber 231 in real time, and the pre-charging pressure can be adjusted through the charging and discharging port 251 to adapt to the pulse damping of different pipeline pressures.
In this embodiment, the damping holes 211 are uniformly distributed in the central area of the bowl-shaped partition plate 21.
In the above configuration, when the pulse pressure is generated, the diaphragm 24 can be displaced from the center, and the amount of deformation and stress can be reduced.
In this embodiment, the damping holes 211 are further disposed at the edge of the bowl-shaped partition 21 near the inner wall of the middle cavity 20 and are uniformly distributed along the circumferential direction of the bowl-shaped partition 21.
In the structure, the damping holes 211 uniformly distributed along the peripheral position of the outer edge of the bowl-shaped partition plate 21 can assist in controlling the deformation of the diaphragm 24, and can avoid the pressure build-up condition of the diaphragm 24 during recovery, thereby being beneficial to discharging the medium in the damping cavity 232.
In this embodiment, the diaphragm 24 is sandwiched between the flange cover 22 and the hollow cavity 20, and the flange cover 22 and the hollow cavity 20 are fixed by bolts 26.
In the above structure, the flange cover body 22 and the hollow cavity body 20 are connected and fixed by the bolts 26 and press the diaphragm 24, so as to realize sealing and fixing of the diaphragm 24.
In this embodiment, the air discharging port 251 is disposed on the pressure gauge 25.
In the structure, the pressure of filling can be detected most visually, other areas needing openings are reduced, and the reliability and the air tightness are improved.
In this embodiment, the pressure gauge 25 is located on one of the flange covers 22 for detecting the pressure of the buffer chamber 231.
In the above structure, since the two buffer chambers 231 are communicated with each other, only one pressure gauge 25 needs to be provided.
In this embodiment, the two buffer chambers 231 are communicated through a pressure equalizing pipe 27 connected to the two flange cover bodies 22.
In the above structure, the pressure equalizing pipe 27 is located outside the hollow central body 20.
In this embodiment, the flange cover 22 is convex in a direction away from the bowl-shaped partition 21.
In the above structure, a sufficient deformation space of the diaphragm 24 is ensured when being buffered, and a more variable compression space is provided for the buffer chamber 231.
In this embodiment, the inlet flange 10 and the hollow cavity 20 are in T-shaped butt joint.
In the above structure, the T-shaped butt joint is advantageous for absorbing the pulse, and the pulse is prevented from directly impacting the diaphragm 24.
The utility model has the advantages that: through arranging the diaphragm cavities 23 at the two ends of the middle cavity body 20, pulse pressure is buffered once when entering the middle cavity body 20 through the inlet flange 10, then flows to the two sides, enters the damping cavity 232 through the damping hole 211, pushes the diaphragm 24 to compress the damping cavity 231 so as to absorb pulses and generate a damping effect at the same time, and the pulse bearing capacity is greatly enhanced by the structure; the buffer cavities 231 are connected with each other, so that the pressure between the two buffer cavities 231 can be effectively balanced, the two buffer cavities 231 can work more stably and reliably, and the phenomenon that the load intensity of one buffer cavity 231 is overlarge due to the pressure difference between the two buffer cavities 231 is avoided; the pressure gauge 25 can monitor the pre-charging pressure of the buffer chamber 231 in real time, and the pre-charging pressure can be adjusted through the charging and discharging port 251 to adapt to the pulse damping of different pipeline pressures.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations of the above assumption should also be regarded as the protection scope of the present invention.
Claims (9)
1. The utility model provides a two diaphragm type pulse damper, includes the import flange and the middle cavity body that links to each other with the import flange, its characterized in that: the inlet flange is connected with the outer wall of the middle section of the middle cavity body, the middle cavity body is cylindrical, bowl-shaped partition plates which are concave inwards towards the middle section of the middle cavity body are arranged at two ends of the middle cavity body, and damping holes which are communicated with each other are formed in the bowl-shaped partition plates; the two ends of the middle cavity body are respectively provided with a flange cover body, a diaphragm cavity is formed between the flange cover body and the bowl-shaped partition plate, a diaphragm is arranged in the diaphragm cavity, and the diaphragm divides the diaphragm cavity into a buffer cavity and a damping cavity connected with the inner cavity of the middle cavity body; the buffer chambers at the left end and the right end of the middle cavity body are communicated with each other, and the buffer chambers are connected with a pressure gauge and an air charging and discharging port.
2. A dual diaphragm pulse damper as defined in claim 1, wherein: the damping holes are uniformly distributed in the center area of the bowl-shaped partition plate.
3. A double diaphragm pulse damper as claimed in claim 1 or 2, wherein: the damping hole still sets up in the edge that the bowl form baffle is close to middle cavity internal wall position and along the setting of the equipartition in bowl form baffle circumference direction.
4. A dual diaphragm pulse damper as defined in claim 1, wherein: the diaphragm is clamped between the flange cover body and the middle cavity body, and the flange cover body and the middle cavity body are fixedly connected through bolts.
5. A dual diaphragm pulse damper as defined in claim 1, wherein: the air charging and discharging port is arranged on the pressure gauge.
6. A double diaphragm pulse damper as claimed in claim 1 or 5, wherein: the pressure gauge is positioned on one of the flange cover bodies and used for detecting the pressure of the buffer cavity.
7. A dual diaphragm pulse damper as defined in claim 1, wherein: the two buffer cavities are communicated through a pressure equalizing pipe connected to the two flange cover bodies.
8. A dual diaphragm pulse damper as defined in claim 1, wherein: the flange cover body is convex in the direction of the bowl-shaped partition plate back to the bowl-shaped partition plate.
9. A dual diaphragm pulse damper as defined in claim 1, wherein: the inlet flange is in T-shaped butt joint with the middle cavity body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024402.2U CN212361234U (en) | 2020-06-05 | 2020-06-05 | Double-diaphragm type pulse damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021024402.2U CN212361234U (en) | 2020-06-05 | 2020-06-05 | Double-diaphragm type pulse damper |
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| Publication Number | Publication Date |
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| CN212361234U true CN212361234U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021024402.2U Active CN212361234U (en) | 2020-06-05 | 2020-06-05 | Double-diaphragm type pulse damper |
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| CN (1) | CN212361234U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412881A (en) * | 2022-01-18 | 2022-04-29 | 三一汽车制造有限公司 | Buffer device, hydraulic system, and work machine |
| CN115218057A (en) * | 2022-07-28 | 2022-10-21 | 德帕姆(杭州)泵业科技有限公司 | Pulsation damper |
-
2020
- 2020-06-05 CN CN202021024402.2U patent/CN212361234U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412881A (en) * | 2022-01-18 | 2022-04-29 | 三一汽车制造有限公司 | Buffer device, hydraulic system, and work machine |
| CN114412881B (en) * | 2022-01-18 | 2023-10-24 | 三一汽车制造有限公司 | Buffer device, hydraulic system and working machine |
| CN115218057A (en) * | 2022-07-28 | 2022-10-21 | 德帕姆(杭州)泵业科技有限公司 | Pulsation damper |
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