CN212454732U - Pulsation damper in reciprocating compressor device - Google Patents
Pulsation damper in reciprocating compressor device Download PDFInfo
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- CN212454732U CN212454732U CN202020965006.3U CN202020965006U CN212454732U CN 212454732 U CN212454732 U CN 212454732U CN 202020965006 U CN202020965006 U CN 202020965006U CN 212454732 U CN212454732 U CN 212454732U
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Abstract
The utility model relates to a pulsation damper in reciprocating compressor device, including cavity and elastic diaphragm, wherein elastic diaphragm separates into pressure stabilizing cavity and working chamber two parts with cavity internal partitioning, and pressure stabilizing cavity is full of the gas of steady pressure at the during operation, and the working chamber is equipped with cylinder connector and working medium intercommunication mouth, and the cylinder connector is used for connecting the cylinder air inlet or the cylinder gas outlet of reciprocating compressor device, and the working medium intercommunication mouth is used for the working medium to get into or discharge the working chamber. Compared with the prior art, the utility model discloses a pulsation damper is when gas pressure fluctuation, and fluctuating pressure acts on the diaphragm and makes it produce flexural deformation, can effectively reduce the pressure fluctuation, promotes the damping effect, further combines inside component group to become similar orifice plate structure, not only can change cylinder and buffer resonance pipe length, can also become the travelling wave with the air current in the equipment by the standing wave to reduce the unevenness of air pressure, further strengthen equipment buffering effect, reach the purpose of damping.
Description
Technical Field
The utility model belongs to the technical field of reciprocating compressor, a pulsation damper among reciprocating compressor device is related to, especially, relate to a pulsation damper among reciprocating compressor device of applied diaphragm.
Background
The reciprocating compressor device is widely applied to the fields of petroleum, chemical industry, energy, transportation and the like. The periodic and intermittent suction and exhaust process can cause the periodic change of pressure and speed of gas in the pipeline, excite the vibration of the pipeline system and cause a series of hazards, such as the reduction of volumetric efficiency of the compressor, the deterioration of gas valve operation, the increase of power consumption, and even the occurrence of safety accidents such as the failure of control instruments, the loosening or fatigue damage of pipeline accessories and connecting parts, and the like. Therefore, damping gas flow pulsations and piping vibrations is an important task for reciprocating compressors. The most common and effective device is to arrange buffers at the air inlet and the air outlet of the compressor cylinder, so that the pressure pulsation is attenuated, the noise is reduced, and the vibration of the reciprocating compressor pipeline system is greatly improved.
At present, the main principle of the buffer in the reciprocating compressor applied in engineering is the energy storage function by the buffer volume. The intake buffer restricts the radiated pressure waves from upstream of the cylinder from entering the intake duct; the exhaust buffer not only limits the return reflected waves from entering the cylinder, but also limits the pressure waves from entering the exhaust duct. The damping effect of the damper depends on the size and location of the damper volume close enough to the cylinder. The damper installed at the air flow pulsation origin, i.e., near the cylinder of the compressor, is a simple and effective damping measure, and the damper far from the cylinder often cannot achieve the expected damping effect, so the damper should be installed close enough to the cylinder; in order to achieve a better damping effect, the volume of the damper should be as large as possible. However, due to the structural, basic and space limitations of the compressor unit, the buffer is not allowed to abut against the cylinder, the volume of the buffer cannot be large, and the working condition of the compressor is complex and variable, so that the reciprocating compressor unit generally cannot meet the vibration reduction requirement, and the production safety of equipment is influenced.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a pulsation damper in a reciprocating compressor device for overcoming the above-mentioned drawbacks of the prior art.
The purpose of the utility model can be realized through the following technical scheme:
a pulsation damper in a reciprocating compressor apparatus, comprising:
the cavity body is provided with a cavity body,
the elastic diaphragm divides the cavity into a pressure stabilizing cavity and a working cavity, the pressure stabilizing cavity is filled with gas with stable pressure during working, the working cavity is provided with a cylinder connecting port and a working medium communicating port, the cylinder connecting port is used for connecting a cylinder air inlet or a cylinder air outlet of the reciprocating compressor device, and the working medium communicating port is used for allowing a working medium to enter or discharge the working cavity.
Preferably, the pulsation damper further comprises a dome-shaped cover plate and a membrane support plate, the edge of the elastic membrane is clamped between the dome-shaped cover plate and the membrane support plate, one surface of the dome-shaped cover plate, facing the elastic membrane, is a dome-shaped profile and used for limiting the maximum deflection of the elastic membrane, and holes meeting the requirement of gas flowing in the cavity are formed in the dome-shaped cover plate.
Preferably, when the cylinder connection port is for connection to a cylinder inlet port of a reciprocating compressor arrangement, the pulsation damper is an inlet pulsation damper, the working medium communication port is for working medium to enter the working chamber, and the dome-shaped cover plate is located on the side of the elastic membrane facing the working chamber.
Preferably, when the cylinder connecting port is used for connecting to a cylinder air outlet of the reciprocating compressor device, the pulsation damper is an outlet pulsation damper, the working medium communicating port is used for discharging the working medium out of the working cavity, and the dome-shaped cover plate is positioned on one side of the elastic membrane facing the pressure stabilizing cavity.
Preferably, the profile curve of the dome-shaped profile is matched with the deformation curve of the elastic membrane.
Preferably, the volume between the dome-shaped profile of the dome-shaped cover plate and the elastic membrane in a natural state is the volume of the membrane cavity, and the volume of the membrane cavity is 3-6% of the volume of the working cavity.
Preferably, the pressure stabilizing cavity and the working cavity are separable structures, and the dome-shaped cover plate and the diaphragm support plate are both flange-shaped structures, are arranged at the connecting ends of the pressure stabilizing cavity and the working cavity and are connected in a flange connection mode.
Preferably, the pulsation damper further comprises an internal component, wherein the internal component consists of a seal head and a connecting pipe nipple, the seal head is arranged in the working cavity and separates the cylinder connecting port from the working medium communicating port, and the connecting pipe nipple penetrates through the seal head.
Preferably, the seal head is a spherical cap-shaped seal head, the inner concave surface of the spherical cap-shaped seal head faces to one end, far away from the elastic diaphragm, of the working cavity, and the cylinder connecting port is arranged at a part between the spherical cap-shaped seal head and the end, far away from the elastic diaphragm, of the working cavity.
Preferably, the pressure stabilizing cavity is provided with a pressure stabilizing gas inlet.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) in order to attenuate the pressure pulsation, the interior of the pulsation damper is divided into a pressure stabilizing cavity and a working cavity by an elastic diaphragm, and the volume of the working cavity of the pulsation damper is changed along with the elastic diaphragm due to the elastic deflection deformation of the elastic diaphragm. When the gas pressure fluctuates, the fluctuating pressure acts on the elastic diaphragm, so that the elastic diaphragm is deflected and deformed, the pressure fluctuation in the compressor system can be effectively reduced, and the vibration reduction effect of the pulsation damper is improved.
(2) Further, the utility model discloses combine the inside component group of buffer to become similar orifice plate structure, the cylinder that not only can change double entry compressor device is managed with this pulsation damper resonance and is long, can also become the travelling wave with the air current in the equipment by the standing wave to reduce air pressure's unevenness, further strengthen equipment buffering effect, reach the purpose of damping.
Drawings
FIG. 1 is a schematic structural view of an inlet pulsation damper according to the present invention;
FIG. 2 is a schematic structural diagram of the outlet pulsation damper according to the present invention;
figure 3 is a schematic view of the combination of the pulsation damper and the cylinder of the reciprocating compressor device according to the present invention;
in the figure, I is an inlet pulsation damper, II is an outlet pulsation damper, and III is a reciprocating compressor device; the device comprises a pressure stabilizing gas inlet 1, a pressure stabilizing cavity 2, a membrane support plate 3, an elastic membrane 4, a dome-shaped cover plate 5, a dome-shaped profile 51, a hole 52, a working medium communicating port 6, a working cavity 7, a seal head 8, a cylinder connecting port 9 and a connecting pipe nipple 10.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the utility model provides a pulsation damper in reciprocating compressor device, including cavity and elastic diaphragm 4, wherein elastic diaphragm 4 separates into pressure stabilizing cavity 2 and working chamber 7 two parts with the cavity internal partitioning, pressure stabilizing cavity 2 is full of the gas of steady pressure at the during operation (preferred pressure stabilizing cavity 2 is equipped with steady voltage gas inlet 1), working chamber 7 is equipped with cylinder connector 9 and working medium intercommunication mouth 6, cylinder connector 9 is used for connecting reciprocating compressor device III's cylinder air inlet or cylinder gas outlet, working medium intercommunication mouth 6 is used for the working medium to get into or discharge working chamber 7. In order to attenuate the pressure pulsation, the interior of the pulsation damper is divided into a pressure stabilizing cavity 2 and a working cavity 7 by an elastic diaphragm 4, and the volume of the working cavity of the pulsation damper is changed along with the elastic diaphragm 4 due to elastic bending deformation. When the gas pressure fluctuates, the fluctuating pressure acts on the elastic diaphragm 4, so that the elastic diaphragm 4 is subjected to flexural deformation, the pressure fluctuation in the compressor system can be effectively reduced, and the vibration reduction effect of the pulsation damper is improved.
The cavity is usually a shell with an inner space, the shell of the shell is generally rigid, the shell can be a tank body with sealing heads (spherical cap shape, oval shape and the like) at two ends, or can be any other shape, and preferably the cavity is a tank body with spherical cap-shaped sealing heads at two ends, as shown in fig. 1 and 2. The utility model discloses in, preferred elastic diaphragm 4 occupies the both ends of cavity respectively with the pressure stabilizing cavity 2 that cavity internal partitioning becomes and working chamber 7, for example in figure 1 and figure 2 elastic diaphragm 4 left side be pressure stabilizing cavity 2, elastic diaphragm 4 right side is working chamber 7, the volume of preferred working chamber 7 is greater than the volume of pressure stabilizing cavity 2.
Further, the pulsation damper can be further provided with an internal component, wherein the internal component comprises a seal head 8 which is arranged in the working cavity 7 and separates the cylinder connecting port 9 from the working medium communicating port 6, and a connecting pipe short section 10 which is arranged on the seal head 8 in a penetrating manner (preferably, the connecting pipe short section 10 is arranged at the center of the seal head 8 in a penetrating manner). It is further preferred that head 8 be the spherical head, and the concave surface of spherical head is towards the one end that flexible diaphragm 4 was kept away from to working chamber 7, and cylinder connector 9 sets up the part between spherical head and the one end that flexible diaphragm 4 was kept away from to working chamber 7. The spherical head is adopted, so that a space between the spherical head and one end of the working cavity 7 far away from the elastic diaphragm 4 forms a similar spherical structure as much as possible, the length of a resonance pipe of the air cylinder and the buffer can be changed, and air flow in the equipment can be changed into traveling waves from standing waves, so that the unevenness of air flow pressure is reduced, the buffering effect of the equipment is further enhanced, and the aim of vibration reduction is fulfilled.
The utility model discloses in, pulsation damper can also include dome apron 5 and diaphragm extension board 3, and the edge (round) of elastic diaphragm 4 press from both sides and locate between dome apron 5 and the diaphragm extension board 3, and dome apron 5 is the dome profile 51 towards the one side of elastic diaphragm 4 for the maximum deflection of restriction elastic diaphragm 4, and be equipped with on the dome apron 5 and satisfy the cavity interior gas flow's hole 52 (for example fill with hole 52 on the dome apron 5). By arranging the dome-shaped cover plate 5 and the membrane support plate 3, not only can the elastic membrane 4 be fixed, but also the dome-shaped cover plate 5 can limit the maximum deflection of the elastic membrane. The profile design of the dome-shaped cover plate 5 and the diaphragm support plate 3 requires that the elastic diaphragm can have larger volume and smaller internal stress reasonably distributed under certain central deflection. In order to ensure that the elastic membrane 4 operates at approximately equal intensity (i.e. the stresses in the centre and in the periphery are close), the profile curve of the dome-shaped profile 51 coincides with the deformation curve of the elastic membrane 4.
The utility model discloses in, pressure-stabilizing cavity 2 and working chamber 7 are separable structure, and dome apron 5 and diaphragm extension board 3 all are flange column structure, set up in pressure-stabilizing cavity 2 and working chamber 7's junction department (dome apron 5 and diaphragm extension board 3 and cavity can adopt the welded form to connect) to connect through flange joint's form. The diaphragm is convenient to replace and the equipment is convenient to inspect. More specifically, it is possible to adopt the manner as shown in fig. 1 and 2, where the membrane strip 3 is only present at the periphery of the chamber and is arranged around the periphery of the chamber in a circle, the dome-shaped cover plate 5 has not only a portion arranged at the periphery of the chamber and matching with the membrane strip 3, but also a portion located inside the chamber, the dome-shaped cover plate 5 and the portion of the membrane strip 3 located at the periphery of the chamber are used for fastening the edge of the elastic membrane 4, and the portion of the dome-shaped cover plate 5 located inside the chamber plays a role in limiting the maximum deflection of the elastic membrane.
The plenum 2 (to the left of the elastic diaphragm 4 in fig. 1 and 2) is filled with air at a steady pressure during operation. Pressure fluctuations in the working chamber 7 (to the right of the flexible diaphragm 4 in figures 1 and 2) cause the diaphragm to flex from side to side, with the change in volume of the chambers, and correspondingly reduce the pressure fluctuations in the working chamber. The utility model discloses in, the volume between the dome profile 51 of dome apron 5 and the elastic diaphragm 4 under the natural state is the diaphragm chamber volume, for effectively reducing the pressure oscillation in working chamber 7, generally controls the diaphragm chamber volume and is working chamber 7 volumetric 3 ~ 6%. The utility model discloses in, elastic diaphragm 4's material should have higher elastic limit and fatigue limit to guarantee that the diaphragm works at elastic limit within range, have longer life. The elastic diaphragm 4 should also be corrosion resistant when compressing corrosive gases. In order to ensure the sensitivity of pressure fluctuation, the elastic membrane 4 is made of nonmetal such as rubber; the steel sheet can be high-carbon steel, the corrosive gas is stainless steel, and the thickness of the steel sheet membrane is generally 0.3-0.5 mm.
The utility model discloses in, as shown in fig. 1 and 3, when cylinder connector 9 is used for connecting the cylinder air inlet at reciprocating compressor device III, this pulsation damper is import pulsation damper I, and working medium intercommunication mouth 6 is used for the working medium to get into working chamber 7, and dome apron 5 is located elastic diaphragm 4 towards one side of working chamber 7. For example, in fig. 1, the left side of the elastic diaphragm 4 is a pressure stabilizing cavity 2, the right side of the elastic diaphragm 4 is a working cavity 7, the dome-shaped cover plate 5 is positioned on one side of the working cavity 7, the inner concave surface of the seal head 8 of the internal component faces to the right, the cylinder connecting port 9 is arranged between the seal head 8 of the internal component and the right end of the working cavity, and the working medium communicating port 6 is positioned between the seal head 8 of the internal component and the dome-shaped cover plate 5. During the suction of the cylinder of the reciprocating compressor device, the elastic diaphragm 4 of the inlet pulsation damper I is flexibly deformed to the right, and at this time, the elastic diaphragm 4 is at the right limit position, namely, is attached to the dome-shaped profile 51 of the dome-shaped cover plate 5, so as to stabilize the pressure value at the suction side. When the suction process is finished, the elastic diaphragm 4 returns to the equilibrium position by pressure equalization.
The utility model discloses in, as shown in fig. 2 and 3, when cylinder connector 9 is used for connecting the cylinder gas outlet at reciprocating compressor device III, this pulsation buffer is export pulsation buffer II, and working medium intercommunication mouth 6 is used for working medium discharge working chamber 7, and dome apron 5 is located elastic diaphragm 4 one side towards voltage stabilizing chamber 2. For example, in fig. 1, the left side of the elastic diaphragm 4 is a pressure stabilizing cavity 2, the right side of the elastic diaphragm 4 is a working cavity 7, the dome-shaped cover plate 5 is positioned on one side of the pressure stabilizing cavity 7, the inner concave surface of the seal head 8 of the internal component faces to the right, the cylinder connecting port 9 is arranged between the seal head 8 of the internal component and the right end of the working cavity, and the medium communicating port 6 is positioned between the seal head 8 of the internal component and the elastic diaphragm 4. During the exhaust process of the cylinder of the reciprocating compressor, the elastic diaphragm 4 of the inlet pulsation damper II can flexibly deform leftwards, and at this time, the elastic diaphragm 4 is at the right limit position, namely, is attached to the dome-shaped profile 51 of the dome-shaped cover plate 5, so that the pressure value at the exhaust side is stabilized. When the venting process is complete, the elastic diaphragm 4 is then returned to the equilibrium position by pressure equalization.
When in use, the cylinder connecting ports 9 of the inlet pulsation damper I and the outlet pulsation damper II are respectively connected to the cylinder air inlet and the cylinder air outlet of the reciprocating compressor device. The interior of the pulsation damper is divided into a pressure stabilizing cavity and a working cavity by an elastic membrane, and the volume of the working cavity of the pulsation damper is changed along with the elastic membrane which can elastically flex and deform. When the gas pressure fluctuates, the fluctuating pressure acts on the elastic diaphragm, so that the elastic diaphragm is deflected and deformed, the pressure fluctuation in the compressor system can be effectively reduced, and the vibration reduction effect of the pulsation damper is improved. Further, the utility model discloses combine the inside component group of buffer to become similar orifice plate structure, the cylinder that not only can change double entry compressor device is managed with this pulsation damper resonance and is long, can also become the travelling wave with the air current in the equipment by the standing wave to reduce air pressure's unevenness, further strengthen equipment buffering effect, reach the purpose of damping.
The embodiments described above are intended to facilitate the understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention according to the disclosure of the present invention.
Claims (10)
1. A pulsation damper in a reciprocating compressor apparatus, comprising:
the cavity body is provided with a cavity body,
the elastic diaphragm (4) divides the cavity into a pressure stabilizing cavity (2) and a working cavity (7), the pressure stabilizing cavity (2) is filled with gas with stable pressure during working, the working cavity (7) is provided with a cylinder connecting port (9) and a working medium communicating port (6), the cylinder connecting port (9) is used for connecting a cylinder air inlet or a cylinder air outlet of the reciprocating compressor device (III), and the working medium communicating port (6) is used for allowing a working medium to enter or be discharged out of the working cavity (7).
2. The pulsation damper in a reciprocating compressor apparatus according to claim 1, wherein said pulsation damper further comprises a dome-shaped cover plate (5) and a membrane support plate (3), the edge of said elastic membrane (4) is sandwiched between the dome-shaped cover plate (5) and the membrane support plate (3), the surface of said dome-shaped cover plate (5) facing the elastic membrane (4) is a dome-shaped surface (51) for limiting the maximum deflection of the elastic membrane (4), and the dome-shaped cover plate (5) is provided with a hole (52) for allowing the gas in the cavity to flow.
3. Pulsation damper in a reciprocating compressor installation according to claim 2, characterized in that when the cylinder connection port (9) is intended to be connected to the cylinder inlet of the reciprocating compressor installation (III), the pulsation damper is an inlet pulsation damper (I), the working medium communication port (6) is intended for the working medium to enter the working chamber (7), and the dome-shaped cover plate (5) is located on the side of the elastic membrane (4) facing the working chamber (7).
4. A pulsation damper in a reciprocating compressor installation according to claim 2, characterized in that when the cylinder connection port (9) is intended to be connected to the cylinder outlet of the reciprocating compressor installation (III), the pulsation damper is an outlet pulsation damper (II), the working medium communication port (6) is intended for the working medium to be discharged from the working chamber (7), and the dome-shaped cover plate (5) is located on the side of the elastic diaphragm (4) facing the surge chamber (2).
5. A pulsation damper in a reciprocating compressor installation according to claim 2, characterized in that the profile curve of the dome-shaped profile (51) is adapted to the deformation curve of the elastic diaphragm (4).
6. A pulsation damper in a reciprocating compressor installation according to claim 5, characterized in that the volume between the dome-shaped profile (51) of the dome-shaped cover plate (5) and the elastic diaphragm (4) in the natural state is the diaphragm chamber volume, which is 3-6% of the volume of the working chamber (7).
7. A pulsation damper in a reciprocating compressor installation according to claim 2, characterized in that the surge chamber (2) and the working chamber (7) are separable structures, and the dome-shaped cover plate (5) and the diaphragm support plate (3) are flange-like structures, are provided at the connecting ends of the surge chamber (2) and the working chamber (7), and are connected by flange connection.
8. A pulsation damper in a reciprocating compressor installation according to claim 1, characterized in that the pulsation damper further comprises an inner member consisting of a head (8) disposed in the working chamber (7) and separating the cylinder connection port (9) and the working medium communication port (6), and a nipple (10) inserted through the head (8).
9. A pulsation damper in a reciprocating compressor installation according to claim 8, characterized in that the head (8) is a spherical head, the inner concave surface of which faces the end of the working chamber (7) remote from the elastic diaphragm (4), and the cylinder connection port (9) is provided in the portion between the spherical head and the end of the working chamber (7) remote from the elastic diaphragm (4).
10. A pulsation damper in a reciprocating compressor installation according to claim 1, characterized in that the surge chamber (2) is provided with a surge gas inlet (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020965006.3U CN212454732U (en) | 2020-05-30 | 2020-05-30 | Pulsation damper in reciprocating compressor device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020965006.3U CN212454732U (en) | 2020-05-30 | 2020-05-30 | Pulsation damper in reciprocating compressor device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637037A (en) * | 2020-05-30 | 2020-09-08 | 上海大隆机器厂有限公司 | Pulsation damper in reciprocating compressor device |
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- 2020-05-30 CN CN202020965006.3U patent/CN212454732U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111637037A (en) * | 2020-05-30 | 2020-09-08 | 上海大隆机器厂有限公司 | Pulsation damper in reciprocating compressor device |
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