CN102536780A - Pulse attenuation plunger pump based on resistor-capacitor (RC) filter theory - Google Patents
Pulse attenuation plunger pump based on resistor-capacitor (RC) filter theory Download PDFInfo
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- CN102536780A CN102536780A CN2012100469585A CN201210046958A CN102536780A CN 102536780 A CN102536780 A CN 102536780A CN 2012100469585 A CN2012100469585 A CN 2012100469585A CN 201210046958 A CN201210046958 A CN 201210046958A CN 102536780 A CN102536780 A CN 102536780A
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- plunger pump
- pressure oil
- pulse attenuation
- oil
- piston
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Abstract
The invention discloses a pulse attenuation plunger pump based on a resistor-capacitor (RC) filter theory. The pulse attenuation plunger pump comprises a plunger pump, a load, an oil tank, a front end cover, a shell, a piston and a spring, wherein the oil outlet of the plunger pump is divided into two paths, one path is connected with the oil tank through the load, and the other path is communicated with a high-pressure oil damping hole on the front end cover of the shell through a pressure oil path; the piston and the spring are arranged in the shell from top to bottom; a low-pressure oil damping hole at the lower end of the shell is connected with an oil leakage port of the plunger pump through a low-pressure oil path and then connected with the oil tank. The pulse attenuation plunger pump has the advantages of simple structure, small volume and light weight and can well attenuate flow pulses generated by various reasons inside the plunger pump; the normal work of the pulse attenuation plunger pump is not influenced by the displacement of the plunger pump; and the pulse attenuation plunger pump is suitable for various constant and variable working conditions.
Description
Technical field
The present invention relates to a kind of plunger pump, especially relate to a kind of attenuate pulsations plunger pump based on RC wave filter principle.
Background technique
Flow pulsation is the inherent characteristic of plunger pump.The flow pulsation of plunger pump mainly is made up of two-part.On the one hand, plunger pump has a plurality of plungers to be in oil-discharging cavity and oil sucting cavity simultaneously simultaneously, thus the instantaneous flow of pump be same instantaneous all be in the instantaneous flow sum of oil-discharging cavity plunger, promptly the output flow of plunger pump is the stack of each plunger semisinusoidal flow; On the other hand, each plunger by oil sucting cavity when oil-discharging cavity switches, plunger cavity pressure is lower than oil-discharging cavity pressure, can cause that fluid pours in down a chimney to plunger cavity, on the flow curve of output, stays downward spike.Flow pulsation is the direct noise source of plunger pump, also is to cause fatigue damage the key factor in restriction plunger pump life-span.
Existing plunger pump attenuate pulsations device has:
1, prepressing type thrust plate.Through thrust plate flow angle rationally is set, there is not pressure difference when making plunger contact oil extraction district, eliminate pressure and pour in down a chimney.Its characteristics are: level pressure, metering pump are had better effects, to the variable displacement pump poor effect.
2, triangular groove thrust plate.Before plunger contact oil extraction district, triangular groove is set, the buffer plunger cavity pressure changes, and reduces flow and pours in down a chimney.Its characteristics are: level pressure, metering pump there are better effects, and poor slightly to the variable displacement pump effect.
3, buffer cavity.Use buffer cavity can utilize fluid elasticity to absorb certain pulsation.Its characteristics are: the flow pulsation that a variety of causes is produced all produces effect, and the effect size is by the decision of cavity volume size.Built-in buffer cavity is limited by the pump inner volume, its application of external size and quality limitations.
4, accumulator.Accumulator according to its accumulation of energy and release can principle, absorb flow pulsation.Its characteristics are: structure is complicated, and the flow pulsation that a variety of causes is produced all produces effect, and the effect size is by the decision of cavity volume size.Built-in accumulator is limited by the pump inner volume, its application of external size and quality limitations.
Summary of the invention
In order to reduce the flow pulsation of plunger pump; The object of the present invention is to provide a kind of attenuate pulsations plunger pump based on RC wave filter principle; Be to adopt in the cavity volume to receive spring-supported piston, regulate the zone of high pressure flow, absorb flow pulsation in high pressure oil and low pressure oil to-and-fro motion.
The technological scheme that the present invention adopts is:
The present invention includes plunger pump, load and fuel tank; Also comprise front cover, housing, piston and spring; The oil outlet of plunger pump is divided into two-way; One the tunnel after load connected tank; Another road is communicated with high pressure oil damping hole on the housing front cover through the pressure oil circuit; Be provided with piston and spring in the housing from top to bottom, the low pressure oil damping hole of housing lower end is connected tank after low pressure oil circuit and plunger pump leak hydraulic fluid port and link to each other.
Described plunger pump is quantitative plunger pump or Variable plunger pump.
The beneficial effect that the present invention has is:
The attenuate pulsations apparatus structure that the present invention comprises is simple, and volume is little, in light weight, and the flow pulsation that plunger pump inside a variety of causes is produced can produce good attenuating.Its proper functioning is not influenced by the plunger pump discharge capacity, is applicable to various quantitative and variable working conditions.
Description of drawings
Accompanying drawing is a structural representation of the present invention.
Among the figure: 1-plunger pump (quantitative or variable), 2-pressure oil circuit, 3-high pressure oil damping hole, 4-front cover, 5-housing, 6-piston, 7-spring, 8-low pressure oil damping hole, 9-low pressure oil circuit, 10-load, 11-fuel tank.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Shown in accompanying drawing, the present invention includes plunger pump 1, load 10 and fuel tank 11; It is characterized in that: also comprise front cover 4, housing 5, piston 6 and spring 7; The oil outlet of plunger pump 1 is divided into two-way; One the tunnel after load 10 connected tank 11; Another road 11 is communicated with high pressure oil damping hole 3 on housing 5 front covers 4 through pressure oil circuit 2; Be provided with piston 6 and spring 7 in the housing 5 from top to bottom, the low pressure oil damping hole 8 of housing 5 lower ends is connected tank 11 after low pressure oil circuit 9 and plunger pump 1 leak hydraulic fluid port and link to each other.The attenuate pulsations device that the present invention comprises can place plunger pump inner, as in the pressure chamber of near cavity volume exporting or swash plate drive cylinder, also can place outside the pump.
Described plunger pump 1 is quantitative plunger pump or Variable plunger pump.
Working principle of the present invention is following;
The RC wave filter is a simple wave filter in the electricity, through the appropriate combination of resistance and electric capacity, and the harmful components in can the effective attenuation circuit.In the present invention, the plunger pump internal resistance is equivalent to resistance R, and additional attenuate pulsations device is equivalent to capacitor C.The pretightening force of spring 4 is set identical with the working pressure of plunger pump.Piston 6 is with high pressure oil and low pressure oil pressure reduction and spring force variation to-and-fro motion, and its limit of sports record position is by the size decision of front cover 4 with housing 5.When plunger pump 1 is operated in working pressure, static pressure and initial tension of spring balance that piston 6 both sides pressure reduction produce.Flow pulsation is correct time, and the additional positive pressure of generation will make spring 7 compressions, and piston 6 makes the hyperbaric chamber volume increase the flow of absorbing redundant to the low pressure chamber motion; When flow pulsation was negative, the additional negative pressure of generation will make spring 7 elongations, and piston 6 reduces the hyperbaric chamber volume to the hyperbaric chamber motion, replenishes the flow of deficiency, thereby realized the flow pulsation decay.The rigidity of regulating piston 6 and spring 7 can be adjusted the corresponding frequencies of this device.Regulate the damping of high pressure oil damping hole 3 and low pressure oil damping hole 8, can change absorption of this device and additional flow.
Claims (2)
1. the attenuate pulsations plunger pump based on RC wave filter principle comprises plunger pump (1), load (10) and fuel tank (11); It is characterized in that: also comprise front cover (4), housing (5), piston (6) and spring (7); The oil outlet of plunger pump (1) is divided into two-way; One the tunnel after load (10) connected tank (11); Another road (11) is communicated with high pressure oil damping hole (3) on housing (5) front cover (4) through pressure oil circuit (2); Be provided with piston (6) and spring (7) in the housing (5) from top to bottom, the low pressure oil damping hole (8) of housing (5) lower end is connected tank (11) after low pressure oil circuit (9) and plunger pump (1) leak hydraulic fluid port and link to each other.
2. a kind of attenuate pulsations plunger pump based on RC wave filter principle according to claim 1 is characterized in that: described plunger pump (1) is quantitative plunger pump or Variable plunger pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100469585A CN102536780A (en) | 2012-02-28 | 2012-02-28 | Pulse attenuation plunger pump based on resistor-capacitor (RC) filter theory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100469585A CN102536780A (en) | 2012-02-28 | 2012-02-28 | Pulse attenuation plunger pump based on resistor-capacitor (RC) filter theory |
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|---|---|
| CN102536780A true CN102536780A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100469585A Pending CN102536780A (en) | 2012-02-28 | 2012-02-28 | Pulse attenuation plunger pump based on resistor-capacitor (RC) filter theory |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033374A (en) * | 2014-06-12 | 2014-09-10 | 浙江大学 | Multi-degree-of-freedom adjustable pressure pulsation attenuator integrated in plunger pump case |
| CN104343673A (en) * | 2014-09-29 | 2015-02-11 | 北京航空航天大学 | Low-pulsation pump source system based on odd number of plunger pumps |
| CN104454686A (en) * | 2014-09-29 | 2015-03-25 | 北京航空航天大学 | Low-pulse pumping source system based on even number of plunger pumps |
| CN105339659A (en) * | 2013-06-25 | 2016-02-17 | 罗伯特·博世有限公司 | Pump |
| CN105736569A (en) * | 2014-12-24 | 2016-07-06 | 株式会社捷太格特 | Variable-throttle hydrostatic bearing |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549466A (en) * | 1983-04-27 | 1985-10-29 | Kabushiki Kaisha Komatsu Seisakusho | Split type oil hydraulic piston pump and pressurized oil feed circuit making use of the same pump |
| CN1356466A (en) * | 2001-12-13 | 2002-07-03 | 浙江大学 | Low-noise hydraulic planger pump with energy accumulator |
| CN2531126Y (en) * | 2001-12-25 | 2003-01-15 | 浙江大学 | Low-noise hydraulic plunger pump with four one-way valves on valve plate |
| CN2566011Y (en) * | 2002-07-05 | 2003-08-13 | 柯坚 | Low pulsating variable desplacement plunger pump |
| CN201180640Y (en) * | 2008-03-14 | 2009-01-14 | 贵州大学 | Apparatus for decreasing geometric flow pulsation of axial plunger pump |
| DE102008062483A1 (en) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Axial piston machine with pulsation reduction |
| CN202023733U (en) * | 2010-12-29 | 2011-11-02 | 鹤壁市通用机械电气有限公司 | Inlet flow pulsation vibration isolator of a high pressure plunger pump |
| CN202545217U (en) * | 2012-02-28 | 2012-11-21 | 浙江大学 | Pulsation attenuation plunger pump based on RC (resistor-capacitor) filter principle |
-
2012
- 2012-02-28 CN CN2012100469585A patent/CN102536780A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4549466A (en) * | 1983-04-27 | 1985-10-29 | Kabushiki Kaisha Komatsu Seisakusho | Split type oil hydraulic piston pump and pressurized oil feed circuit making use of the same pump |
| CN1356466A (en) * | 2001-12-13 | 2002-07-03 | 浙江大学 | Low-noise hydraulic planger pump with energy accumulator |
| CN2531126Y (en) * | 2001-12-25 | 2003-01-15 | 浙江大学 | Low-noise hydraulic plunger pump with four one-way valves on valve plate |
| CN2566011Y (en) * | 2002-07-05 | 2003-08-13 | 柯坚 | Low pulsating variable desplacement plunger pump |
| CN201180640Y (en) * | 2008-03-14 | 2009-01-14 | 贵州大学 | Apparatus for decreasing geometric flow pulsation of axial plunger pump |
| DE102008062483A1 (en) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Axial piston machine with pulsation reduction |
| CN202023733U (en) * | 2010-12-29 | 2011-11-02 | 鹤壁市通用机械电气有限公司 | Inlet flow pulsation vibration isolator of a high pressure plunger pump |
| CN202545217U (en) * | 2012-02-28 | 2012-11-21 | 浙江大学 | Pulsation attenuation plunger pump based on RC (resistor-capacitor) filter principle |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105339659A (en) * | 2013-06-25 | 2016-02-17 | 罗伯特·博世有限公司 | Pump |
| CN105339659B (en) * | 2013-06-25 | 2018-02-23 | 罗伯特·博世有限公司 | Pump |
| CN104033374A (en) * | 2014-06-12 | 2014-09-10 | 浙江大学 | Multi-degree-of-freedom adjustable pressure pulsation attenuator integrated in plunger pump case |
| CN104343673A (en) * | 2014-09-29 | 2015-02-11 | 北京航空航天大学 | Low-pulsation pump source system based on odd number of plunger pumps |
| CN104454686A (en) * | 2014-09-29 | 2015-03-25 | 北京航空航天大学 | Low-pulse pumping source system based on even number of plunger pumps |
| CN104343673B (en) * | 2014-09-29 | 2016-08-24 | 北京航空航天大学 | Low pulse pump source system based on odd piston pump |
| CN105736569A (en) * | 2014-12-24 | 2016-07-06 | 株式会社捷太格特 | Variable-throttle hydrostatic bearing |
| CN105736569B (en) * | 2014-12-24 | 2019-08-27 | 株式会社捷太格特 | Variable restrictor shape hydrostatic bearing |
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Application publication date: 20120704 |