CN109763951B - Double-diaphragm pulsation damper - Google Patents
Double-diaphragm pulsation damper Download PDFInfo
- Publication number
- CN109763951B CN109763951B CN201910084786.2A CN201910084786A CN109763951B CN 109763951 B CN109763951 B CN 109763951B CN 201910084786 A CN201910084786 A CN 201910084786A CN 109763951 B CN109763951 B CN 109763951B
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- diaphragm
- air chamber
- pulsation damper
- shell
- chamber
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- 230000010349 pulsation Effects 0.000 title claims abstract description 28
- 238000013016 damping Methods 0.000 claims description 7
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 210000001503 joint Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 5
- 239000007788 liquid Substances 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000885 Dual-phase steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Abstract
The invention provides a double-diaphragm pulsation damper which is provided with a cavity, wherein an opening communicated with a pipeline is arranged at the lower part of the cavity, an upper diaphragm and a lower diaphragm which are transversely arranged are fixed in the cavity, the cavity above the upper diaphragm is divided into an upper air chamber, a lower air chamber is formed between the upper diaphragm and the lower diaphragm, air is respectively pre-filled in the upper air chamber and the lower air chamber, and the upper air chamber is not communicated with the lower air chamber. According to the invention, by adopting a multi-cavity structure, pressure pulsation is eliminated through secondary conduction, the treatment elasticity is greatly increased, and the treated pressure curve is more stable.
Description
Technical Field
The invention relates to a diaphragm pulsation damper which is used for a dosing pry system in oil-gas ground engineering and petrochemical engineering and is matched with a metering pump for use.
Background
In the dosing pry system, a metering pump is arranged, and the metering pump has the characteristic of periodic work, so that pulsating impact can be generated on a pipeline and equipment, local vibration of the system and uneven load of a prime motor are caused, and even system faults or accidents are caused. The pulsation damper is arranged on the outlet pipeline of the metering pump, so that the pipeline pulsation can be effectively eliminated.
The current common use is single diaphragm pulsation damper, including the gas receiver, be equipped with an elastic diaphragm in the gas receiver, the elastic diaphragm separates the gas receiver into working medium chamber and gas compression chamber (pre-filled with gas), the opening in working medium chamber communicates in the outlet line of measuring pump, when the pressure fluctuation in the outlet line transmits the working medium chamber, can receive the damping effect of elastic diaphragm and gas compression chamber, produces absorption, the reduction effect to pressure fluctuation.
However, because only one elastic diaphragm is arranged in the single-diaphragm pulsation damper, the material, the position and the size of the elastic diaphragm are fixed, and the problems of unstable pulsation elimination, large fluctuation and poor adaptability to different working conditions exist.
Disclosure of Invention
The invention aims at: the double-diaphragm pulsation damper solves the technical problems in the prior art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a double diaphragm pulsation damper having a chamber, the chamber lower portion being provided with an opening for communicating with a pipe, characterized in that: an upper diaphragm and a lower diaphragm which are transversely arranged are fixed in the chamber, the chamber above the upper diaphragm is divided into an upper air chamber, a lower air chamber is formed between the upper diaphragm and the lower diaphragm, air is respectively pre-filled in the upper air chamber and the lower air chamber, and the upper air chamber is not communicated with the lower air chamber.
The double-diaphragm pulsation damper comprises: the cavity is formed by connecting an upper shell and a lower shell in a relatively sealed manner, the upper shell is closed, the upper air chamber is formed between the upper shell and an upper diaphragm, and the opening is formed in the lower shell.
The double-diaphragm pulsation damper comprises: the edges of the upper diaphragm and the lower diaphragm are fixed at the butt joint position of the upper shell and the lower shell.
The double-diaphragm pulsation damper comprises: the upper diaphragm protrudes upward, and the lower diaphragm protrudes downward.
The double-diaphragm pulsation damper comprises: the upper air chamber or the lower air chamber is connected with a barometer.
The double-diaphragm pulsation damper comprises: the gas composition in the upper and lower chambers is different so that they have different densities at the same gas pressure.
The double-diaphragm pulsation damper comprises: the upper diaphragm and the lower diaphragm have different elastic moduli or different damping coefficients.
The double-diaphragm pulsation damper comprises: the lower diaphragm is made of anti-corrosion and acid and alkali resistant materials.
Compared with the prior art, the invention has the following beneficial effects: by adopting the structure of the multiple cavities, the pressure pulsation is eliminated through secondary conduction, the treatment elasticity is greatly increased, and the treated pressure curve is more stable.
Drawings
Fig. 1 is a sectional view of a structure of a dual diaphragm pulsation damper provided by the present invention.
Reference numerals illustrate: 1-a pressure gauge; 2-an upper housing; 3-an upper membrane; 4-a lower membrane; 5-lower shell.
Detailed Description
Some specific embodiments of the invention will now be described in detail, by way of example and not by way of limitation, with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to true scale.
As shown in fig. 1, the invention provides a double-diaphragm pulsation damper, which comprises an upper shell 2 and a lower shell 5 which are in relatively tight connection, wherein the upper shell 2 is closed, the lower shell 5 is provided with an opening communicated with a pipeline, an upper diaphragm 3 and a lower diaphragm 4 which are transversely arranged are fixed in a cavity formed by the upper shell 2 and the lower shell 5, the upper diaphragm 3 and the lower diaphragm 4 are made of flexible materials, gas is pre-filled between the upper shell 2 and the upper diaphragm 3 to form an upper air chamber, gas is pre-filled between the upper diaphragm 3 and the lower diaphragm 4 to form a lower air chamber, and the upper air chamber and the lower air chamber are not communicated with each other.
In this embodiment, the edges of the upper diaphragm 3 and the lower diaphragm 4 are fixed at the abutting positions of the upper casing 2 and the lower casing 5, and the upper diaphragm 3 protrudes upward and the lower diaphragm 4 protrudes downward due to the pre-filling of the gas in the lower gas chamber.
In order to facilitate the measurement of the air pressure of the upper air chamber and the lower air chamber, the upper shell 2 is also provided with the air pressure meter 1, and the air pressure meter 1 can simultaneously measure the air pressure of the upper air chamber and the lower air chamber because the air pressure of the upper air chamber is equal to the air pressure of the lower air chamber in a static state; that is, the barometer 1 may be provided in the upper air chamber or the lower air chamber.
When the pressure fluctuation occurs in the liquid in the pipeline, the liquid entering the lower shell 5 from the opening is in vibration transmission with the lower air chamber through the lower diaphragm 3, so that the lower air chamber and the upper air chamber form a cooperative damping effect to reduce or weaken the pressure fluctuation of the liquid in the pipeline. The invention adopts a multi-cavity structure, so that pressure pulsation is eliminated through secondary conduction (similar to secondary spring damping), the processing elasticity is greatly increased, and the processed pressure curve is smoother.
In order to enhance the effect of eliminating the fluctuation, the gas components in the upper gas chamber and the lower gas chamber can be different, so that the upper gas chamber and the lower gas chamber have different densities under the same gas pressure, and the damping effect is enhanced.
The air pressure in the upper air chamber and the lower air chamber is pre-filled during manufacturing, so that an air adding port is not reserved in the illustrated embodiment; of course, the upper air chamber and the lower air chamber can be reserved with air inlets so as to be convenient for air charging and discharging according to the requirement.
And the upper diaphragm 3 and the lower diaphragm 4 preferably have different elastic moduli or different damping coefficients.
In some cases, the lower diaphragm 4 should be made of a corrosion-resistant and acid-alkali-resistant material, and the shell is generally made of carbon steel, stainless steel or dual-phase steel.
The above description is illustrative of the invention and is not to be construed as limiting, and it will be understood by those skilled in the art that many modifications, variations or equivalents may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (5)
1. A double diaphragm pulsation damper having a chamber, the chamber lower portion being provided with an opening for communicating with a pipe, characterized in that: an upper diaphragm and a lower diaphragm which are transversely arranged are fixed in the cavity, the upper diaphragm is upwards protruded, the lower diaphragm is downwards protruded, the cavity above the upper diaphragm is divided into an upper air chamber, and the upper air chamber is not communicated with the opening; a closed lower air chamber is formed between the upper diaphragm and the lower diaphragm, air is respectively pre-filled in the upper air chamber and the lower air chamber, and the air components in the upper air chamber and the lower air chamber are different, so that the upper air chamber and the lower air chamber have different densities under the same air pressure and are not communicated with each other;
The cavity is formed by connecting an upper shell and a lower shell in a relatively sealed manner, the upper shell is closed, the upper air chamber is formed between the upper shell and an upper diaphragm, and the opening is formed in the lower shell.
2. The dual diaphragm pulsation damper of claim 1, wherein: the edges of the upper diaphragm and the lower diaphragm are fixed at the butt joint position of the upper shell and the lower shell.
3. The dual diaphragm pulsation damper of claim 1, wherein: the upper air chamber or the lower air chamber is connected with a barometer.
4. The dual diaphragm pulsation damper of claim 1, wherein: the upper diaphragm and the lower diaphragm have different elastic moduli or different damping coefficients.
5. The dual diaphragm pulsation damper of claim 1, wherein: the lower diaphragm is made of anti-corrosion and acid and alkali resistant materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910084786.2A CN109763951B (en) | 2019-01-29 | 2019-01-29 | Double-diaphragm pulsation damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910084786.2A CN109763951B (en) | 2019-01-29 | 2019-01-29 | Double-diaphragm pulsation damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109763951A CN109763951A (en) | 2019-05-17 |
| CN109763951B true CN109763951B (en) | 2024-05-10 |
Family
ID=66455487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910084786.2A Active CN109763951B (en) | 2019-01-29 | 2019-01-29 | Double-diaphragm pulsation damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109763951B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1500811A1 (en) * | 2003-07-22 | 2005-01-26 | Hitachi, Ltd. | Damper mechanism for a high pressure fuel pump |
| CN101311523A (en) * | 2007-05-21 | 2008-11-26 | 株式会社日立制作所 | Fluid pressure pulsation damper mechanism and high-pressure fuel pump equipped with fluid pressure pulsation damper mechanism |
| CN205479937U (en) * | 2016-01-27 | 2016-08-17 | 日照市大华流体控制有限公司 | Two unfamiliar attenuators of reverse formula |
| CN107002615A (en) * | 2014-12-12 | 2017-08-01 | 株式会社不二工机 | Diaphragm and the ripple damper using the diaphragm |
| CN209637948U (en) * | 2019-01-29 | 2019-11-15 | 中国寰球工程有限公司 | Double membrane pulsation dampers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6669455B2 (en) * | 2002-01-31 | 2003-12-30 | Elmer Scott Welch | Fluid-pumping system employing air-driven pump and employing at least one pulsation dampener |
| JP3823060B2 (en) * | 2002-03-04 | 2006-09-20 | 株式会社日立製作所 | High pressure fuel supply pump |
| US8727752B2 (en) * | 2010-10-06 | 2014-05-20 | Stanadyne Corporation | Three element diaphragm damper for fuel pump |
-
2019
- 2019-01-29 CN CN201910084786.2A patent/CN109763951B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1500811A1 (en) * | 2003-07-22 | 2005-01-26 | Hitachi, Ltd. | Damper mechanism for a high pressure fuel pump |
| CN101311523A (en) * | 2007-05-21 | 2008-11-26 | 株式会社日立制作所 | Fluid pressure pulsation damper mechanism and high-pressure fuel pump equipped with fluid pressure pulsation damper mechanism |
| CN107002615A (en) * | 2014-12-12 | 2017-08-01 | 株式会社不二工机 | Diaphragm and the ripple damper using the diaphragm |
| CN205479937U (en) * | 2016-01-27 | 2016-08-17 | 日照市大华流体控制有限公司 | Two unfamiliar attenuators of reverse formula |
| CN209637948U (en) * | 2019-01-29 | 2019-11-15 | 中国寰球工程有限公司 | Double membrane pulsation dampers |
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| Publication number | Publication date |
|---|---|
| CN109763951A (en) | 2019-05-17 |
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