CN101498324A - Hydraulic pressure booster for ultra-high pressure tool - Google Patents

Hydraulic pressure booster for ultra-high pressure tool Download PDF

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Publication number
CN101498324A
CN101498324A CNA2009100789488A CN200910078948A CN101498324A CN 101498324 A CN101498324 A CN 101498324A CN A2009100789488 A CNA2009100789488 A CN A2009100789488A CN 200910078948 A CN200910078948 A CN 200910078948A CN 101498324 A CN101498324 A CN 101498324A
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CN
China
Prior art keywords
pressurized cylinder
pressure
way valve
pressurized
cavity
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Pending
Application number
CNA2009100789488A
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Chinese (zh)
Inventor
毛智勇
陈瑞阳
刘建
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Beijing Union University
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Beijing Union University
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Application filed by Beijing Union University filed Critical Beijing Union University
Priority to CNA2009100789488A priority Critical patent/CN101498324A/en
Publication of CN101498324A publication Critical patent/CN101498324A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to the field of the hydraulic device, in particular relates to a hydraulic intensifier (8) of a superhigh pressure tool. The hydraulic intensifier (8) adopts a pressure cylinder (3), a reversing valve (1) and a hydraulic control one-way valve (2) to form a pressurizing loop, a pressure cylinder piston is arranged in the pressure cylinder (3) and is used for dividing the pressure cylinder into a poleless cavity, a pole cavity and a pressurizing cavity, a top pole (4) is arranged on an end cover of the poleless cavity of the pressure cylinder, the pressure cylinder piston is a hollow part, an one-way valve (5), a center hole (7) and the pressurizing cavity are arranged in the hollow, and the inlet end of the one-way valve (5) is positioned in a position which opposites to the top pole (4). When the piston completely withdraws, the top pole can touch the one-way valve (5) to communicate the one-way valve, the outlet end of the one-way valve (5) is communicated with the pressurizing cavity by the center hole (7), and the hydraulic control one-way valve (2) is arranged on an oil circuit of the pole cavity of the pressure cylinder (3). The hydraulic intensifier has compact structure, and the pipeline connection between the valves and the pressure cylinders is saved to reduce system leakage. The invention has the advantages of convenient installation, low cost, stable operation, long service life, high work efficiency, strong temperature variation resistance, strong environmental pollution resistance, convenient maintenance, and the like and is suitable for the outdoor service on building sites for a long period.

Description

The hydraulic intensifier that is used for ultra-high pressure tool
Technical field
The invention belongs to the hydraulic equipment field, especially for the hydraulic intensifier of ultra-high pressure tool.
Background technique
Cut off, push at the steel that use at present in the hydraulic system of ultra-high pressure tools such as connection and expander, adopt superpressure oil pump usually as the equipment dynamic source.
Superpressure oil pump is to convert the mechanical energy that motor (or other prime mover) is exported to liquid ultrahigh pressure pressure energy (80~100MPa) reforming unit.Superpressure oil pump has advantages such as volume is little, in light weight, ouput force is big, is fit to be used as the hydraulic power supply of ultra-high pressure tool.But, in actual use, find that also there are some problems in superpressure oil pump:
1) superpressure oil pump self flow is less, and the internal leakage under the ultrahigh pressure operating mode will largely have influence on the volumetric efficiency of pump, and excessive leakage also can make oil pump failure.
What 2) adopt between the kinematic pair such as the plunger of superpressure oil pump and plunger case is " clearance seal ", and its gap is little, machining accuracy is high, but also very high to the requirement of the turbidity test of fluid and temperature, promptly this oil pump contamination resistance is relatively poor.Graininess impurity will strengthen kinematic pair wearing and tearing, even cause " machinery is stuck ".The oil temperature is too high, causes that oil viscosity decline also can add gross leak.
3) since this kind equipment for a long time in the open the building site use, dust height, temperature variation are big, environment is abominable, is again long time continuous working, has reduced the working life of superpressure oil pump more.
4) because the output flow of general superpressure oil pump is less, when Hydraulic power tools needed " low pressure F.F. " and " high pressure the worker advance " two kinds of operating modes to switch, the output flow of this oil pump had limited " F.F. " speed, caused the equipment utilization efficiency to reduce.
Summary of the invention
The purpose of this invention is to provide a kind of by the conventional pressure of the hydraulic pressure (<31.5MPa) hydraulic intensifier of the ultra-high pressure tool use formed of original paper.This hydraulic intensifier can overcome existing superpressure oil pump and leak the defective big, that contamination resistance is poor, working life is low, utilization efficiency is low.
As the hydraulic intensifier of the ultra-high pressure tool of a kind of mode of the present invention, it adopts pressurized cylinder, selector valve and Pilot operated check valve to form boost-up circuit; Wherein, be provided with pressurized cylinder piston in the pressurized cylinder, pressurized cylinder piston is divided into rodless cavity, rod chamber and booster cavity with pressurized cylinder; On the end cap of pressurized cylinder rodless cavity push rod is set; Pressurized cylinder piston is the parts of a hollow, in hollow, be provided with one-way valve, center hole, and be communicated with booster cavity, the entry end of one-way valve be positioned at push rod over against the position, when this piston is all return, push rod can touch one-way valve and make its conducting, and the outlet end of one-way valve is communicated with booster cavity by center hole; Pressurized cylinder rod chamber oil circuit is provided with Pilot operated check valve.
In the hydraulic intensifier of a kind of mode of the present invention, the output terminal of pressurized machine is connected with clutch release slave cylinder, and the right position outlet of selector valve is communicated with the clutch release slave cylinder rod chamber, and the right position outlet of selector valve also is communicated with the pressurized cylinder rod chamber by Pilot operated check valve; Position, the left side outlet of selector valve is communicated with the pressurized cylinder rodless cavity, and the pressurized cylinder rodless cavity is communicated with the clutch release slave cylinder rodless cavity by one-way valve, center hole and booster cavity.
In the hydraulic intensifier of a kind of mode of the present invention, when returned the putting in place of clutch release slave cylinder and pressurized cylinder is not also return when putting in place, oil pump fluid continues to pressurized cylinder rod chamber fuel feeding through Pilot operated check valve, makes it continue left side and moves back, until eliminating the return error.
In the hydraulic intensifier of a kind of mode of the present invention, return earlier when pressurized cylinder piston and to put in place and slave cylinder piston is not also return when putting in place, the inner one-way valve of pressurized cylinder is backed down by push rod, the oil return of clutch release slave cylinder rodless cavity continues oil return through center hole, one-way valve, selector valve, until slave cylinder piston return put in place till.
In the hydraulic intensifier of a kind of mode of the present invention, the pressure ratio of pressurized cylinder is P 2/ P 1=6.5, wherein P1 is an oil pump feed pressure; P2 is the pressurized cylinder delivery pressure.
In the hydraulic intensifier of a kind of mode of the present invention, the meta of selector valve can be realized the off-load of oil pump low pressure.
Hydraulic pressure extra high voltage system as a kind of mode of the present invention, it comprises the hydraulic intensifier of one of aforesaid way, wherein, selector valve and Pilot operated check valve and pressurized cylinder adopt overlapping to install in the pressurized machine, and the A of pressurized machine, B, four hydraulic fluid ports of C, D connect oil pump, fuel tank and clutch release slave cylinder rod chamber and rodless cavity respectively.
Good effect of the present invention is as follows: the hydraulic intensifier that is used for ultra-high pressure tool of the present invention utilizes advantages such as conventional pressure hydraulic element antipollution power is strong, long service life, thoroughly solved the ultrahigh pressure element to Environmental Conditions requirement harshness with to the demanding defective of oil cleanliness, greatly improve the reliability that ultra-high pressure tool uses, prolonged working life.Simultaneously, utilize the bigger advantage of conventional pressure oil pump output flow also can realize " the low pressure F.F. " of equipment executive component easily, and can satisfy " low pressure F.F. (clamping work pieces) " of work cylinder pressure and the automatic conversion of " the high pressure worker advances (cutting off workpiece) " two kinds of operating modes, improve working efficiency effectively.
Description of drawings
The directional terminology of Cai Yonging all is for the direction of the reading accompanying drawing of routine in the following description.
Fig. 1 is the structural representation of the preferred embodiments of the present invention
Among the figure:
1 selector valve, 2 Pilot operated check valves, 3 pressurized cylinders
4 push rods, 5 one-way valves, 6 clutch release slave cylinders
7 center holes, 8 pressurized machines
The P1 common pressure chamber
The P2 booster cavity
A__ connects oil pump
The B__ connected tank
C__ connects the clutch release slave cylinder rod chamber
D__ connects the clutch release slave cylinder rodless cavity
Embodiment
As shown in Figure 1, pressurized machine 8 of the present invention adopts pressurized cylinder 3 and conventional pressure elements selector valve 1, Pilot operated check valve 2 to form boost-up circuit.Be provided with pressurized cylinder piston in the pressurized cylinder 3, pressurized cylinder piston is divided into rodless cavity, rod chamber and booster cavity with pressurized cylinder.Push rod 4 is set on the end cap of pressurized cylinder rodless cavity.Pressurized cylinder piston is the parts of a hollow, in hollow, be provided with one-way valve 5, center hole 7, and be communicated with booster cavity P2, the entry end of one-way valve 5 be positioned at push rod 4 over against the position, when this piston is all return, push rod can touch one-way valve 5 and make its conducting, and the outlet end of one-way valve 5 is communicated with booster cavity P2 by center hole 7.Pressurized cylinder 3 rod chamber oil circuits are provided with Pilot operated check valve 2.
In addition, the output terminal of pressurized machine 8 is connected with clutch release slave cylinder 6, and the right position outlet of selector valve 1 is communicated with the clutch release slave cylinder rod chamber, and the right position outlet of selector valve 1 also is communicated with the pressurized cylinder rod chamber by Pilot operated check valve 2; Position, the left side outlet of selector valve 1 is communicated with the pressurized cylinder rodless cavity, and the pressurized cylinder rodless cavity is communicated with the clutch release slave cylinder rodless cavity by one-way valve 5, center hole 7 and booster cavity P2.
Working procedure: when 1 left connecting system of selector valve, fluid enters pressurized cylinder rodless cavity (being common pressure chamber P1), directly enters clutch release slave cylinder 6 rodless cavities through one-way valve 5 and center hole 7, and the cylinder piston rod that pushes the work forward stretches out, clamping work pieces.At this moment, because the control oil channel of Pilot operated check valve 2 is in low pressure, Pilot operated check valve 2 oppositely ends, the oil circuit of pressurized cylinder is cut off, and makes pressurized cylinder piston keep motionless, and the output fluid of oil pump all enters clutch release slave cylinder 6 through center hole 7, its piston is stretched out fast, realize " low pressure F.F. "; After finishing " clamping " operating mode, because load resistance increases, system pressure raises, Pilot operated check valve 2 control oil channel pressure also increase, Pilot operated check valve 2 is oppositely opened, pressurized cylinder rod chamber oil circuit is connected fuel tank, and pressurized cylinder piston moves right, and one-way valve 5 was allowing push rod 4 backs close automatically under the effect of booster cavity P2 high pressure.Fluid among the booster cavity P2 is pressurized, and the cylinder piston that pushes the work forward continues to move ahead automatic " the ultrahigh pressure the worker advance " operating mode that realizes with low speed ultrahigh pressure.The super high pressure oil flow quantity that pressurized cylinder booster cavity P2 part is discharged at each stroke should be able to satisfy the required flow of clutch release slave cylinder " ultrahigh pressure the worker advance ".
After " worker advances " operating mode is finished, selector valve 1 commutation, right position connecting system, the fluid of oil pump output can enter clutch release slave cylinder 6 rod chambers simultaneously and enter the pressurized cylinder rod chamber through Pilot operated check valve 2.This moment, pressurized cylinder piston was return fast, and slave cylinder piston is got back among the pressurized cylinder booster cavity P2 rodless cavity fluid is defeated in fall back process, and it is full of, and recycles.
After all work is finished, selector valve 1 can be placed meta.Utilize selector valve meta function to realize the off-load of oil pump low pressure, both can save power consumpiton, reduce the fluid heating again.
Leakage compensation function: leak fluid when not enough when producing between pressurized cylinder booster cavity P2 part and the clutch release slave cylinder rodless cavity, might cause pressurized cylinder piston return error, be i.e. returned the putting in place of clutch release slave cylinder and pressurized cylinder does not also fall back on left end.At this moment, native system can allow oil pump fluid continue to pressurized cylinder rod chamber fuel feeding through Pilot operated check valve 2, makes it continue a left side and moves back, until eliminating the return error.
When clutch release slave cylinder return error occurring, be that pressurized cylinder piston is return earlier and put in place and slave cylinder piston is not also return when putting in place, by push rod 4 backed down owing to pressurized cylinder 3 inner one-way valves 5 this moment, the oil return of clutch release slave cylinder rodless cavity can continue oil return through center hole 7, one-way valve 5, selector valve 1, until its slave cylinder piston return put in place till.
This shows that move in circles through one, the native system oil circuit can be eliminated the return error of pressurized cylinder and clutch release slave cylinder automatically, does not need to add in addition recharging oil device again.
Selector valve 1 adopts overlapping to install with Pilot operated check valve 2 and pressurized cylinder 3 in this pressurized machine 8, and the A of pressurized machine 8, B, four hydraulic fluid ports of C, D connect oil pump, fuel tank and clutch release slave cylinder rod chamber and rodless cavity respectively, the convenient hydraulic pressure extra high voltage system of forming.
In addition, the pressure ratio of pressurized cylinder in this pressurized machine:
P 2 P 1 = D 2 d 2 = 125 2 50 2 = 6.25
In the formula: P1__ oil pump feed pressure; P2___ pressurized cylinder delivery pressure; D__ pressurized cylinder piston diameter mm; D__ pressurization head diameter mm
When oil pump feed pressure P 1=16Mpa, pressurized cylinder delivery pressure P2=100Mpa;
The reciprocal output flow of pressurized machine single
L__ pressurized cylinder piston stroke mm in the formula; D__ pressurization head diameter mm.
Saved pipeline between supercharger structure compactness of the present invention, each valve and the pressurized cylinder and be connected, reduced System leak, have easy for installation, cost is low, working stability, life-span height, work efficiency height, resisting temperature become The advantages such as change and environmental pollution ability are strong, easy to maintenance. Be suitable for long-term open-air use the in construction building site.

Claims (7)

1. the hydraulic intensifier of a ultra-high pressure tool (8), it adopts pressurized cylinder (3), selector valve (1) and Pilot operated check valve (2) to form boost-up circuit;
It is characterized in that: pressurized cylinder is provided with pressurized cylinder piston in (3), and pressurized cylinder piston is divided into rodless cavity, rod chamber and booster cavity with pressurized cylinder;
Push rod (4) is set on the end cap of pressurized cylinder rodless cavity;
Pressurized cylinder piston is the parts of a hollow, in hollow, be provided with one-way valve (5), center hole (7) and booster cavity, the entry end of one-way valve (5) be positioned at push rod (4) over against the position, when this piston is all return, push rod can touch one-way valve (5) and make its conducting, and the outlet end of one-way valve (5) is communicated with booster cavity by center hole (7);
Pressurized cylinder (3) rod chamber oil circuit is provided with Pilot operated check valve (2).
2. the hydraulic intensifier of ultra-high pressure tool according to claim 1 (8), it is characterized in that: the output terminal of described pressurized machine (8) is connected with clutch release slave cylinder (6), the right position outlet of selector valve (1) is communicated with the clutch release slave cylinder rod chamber, and the right position outlet of selector valve (1) also is communicated with the pressurized cylinder rod chamber by Pilot operated check valve (2); Position, the left side outlet of selector valve (1) is communicated with the pressurized cylinder rodless cavity, and the pressurized cylinder rodless cavity is communicated with the clutch release slave cylinder rodless cavity by one-way valve (5), center hole (7) and booster cavity.
3. the hydraulic intensifier of ultra-high pressure tool as claimed in claim 1 or 2 (8), it is characterized in that: when clutch release slave cylinder (6) returned putting in place and pressurized cylinder (3) is not also return when putting in place, oil pump fluid continues to pressurized cylinder rod chamber fuel feeding through Pilot operated check valve (2), make it continue a left side and move back, until eliminating the return error.
4. the hydraulic intensifier of ultra-high pressure tool as claimed in claim 1 or 2 (8), it is characterized in that: return earlier when pressurized cylinder piston and put in place and slave cylinder piston is not also return when putting in place, the inner one-way valve of pressurized cylinder (5) is backed down by push rod (4), the oil return of clutch release slave cylinder rodless cavity continues oil return through center hole (7), one-way valve (5), selector valve (1), until slave cylinder piston return put in place till.
5. the hydraulic intensifier of ultra-high pressure tool as claimed in claim 1 or 2 (8), it is characterized in that: the pressure ratio of described pressurized cylinder is P 2/ P 1=6.5, wherein P1 is an oil pump feed pressure; P2 is the pressurized cylinder delivery pressure.
6. the hydraulic intensifier of ultra-high pressure tool as claimed in claim 1 or 2 (8), it is characterized in that: the meta of described selector valve (1) can be realized the off-load of oil pump low pressure.
7. hydraulic pressure extra high voltage system, it comprises as one of them described hydraulic intensifier (8) of claim 1-6, it is characterized in that, selector valve (1) adopts overlapping to install with Pilot operated check valve (2) and pressurized cylinder (3) in the described pressurized machine (8), and A, the B of pressurized machine (8), C, four hydraulic fluid ports of D connect oil pump, fuel tank and clutch release slave cylinder rod chamber and rodless cavity respectively.
CNA2009100789488A 2009-03-02 2009-03-02 Hydraulic pressure booster for ultra-high pressure tool Pending CN101498324A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2009100789488A CN101498324A (en) 2009-03-02 2009-03-02 Hydraulic pressure booster for ultra-high pressure tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNA2009100789488A CN101498324A (en) 2009-03-02 2009-03-02 Hydraulic pressure booster for ultra-high pressure tool

Publications (1)

Publication Number Publication Date
CN101498324A true CN101498324A (en) 2009-08-05

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103883338A (en) * 2014-03-26 2014-06-25 安徽理工大学 Hydraulic support stand column self-service pressurizing system comprising hydraulic pressurizer
CN104074809A (en) * 2013-03-25 2014-10-01 迷你液压增压器公司 Hydraulic system
CN105465061A (en) * 2014-09-30 2016-04-06 丹佛斯动力系统有限公司 Hydraulic system
CN105705706A (en) * 2013-10-31 2016-06-22 沃尔沃建造设备有限公司 Flow control valve for construction equipment, having floating function
CN105889159A (en) * 2016-04-25 2016-08-24 天津优瑞纳斯智能装备有限公司 Hydraulic system with ultra-high pressure outputting capacity
CN106151126A (en) * 2016-08-26 2016-11-23 北京精密机电控制设备研究所 The servo control mechanism of a kind of parallel operation is from boost-up circuit
WO2017084225A1 (en) * 2015-11-19 2017-05-26 北京美高科技发展有限公司 Cable-type static-pressure setting tool
CN107939754A (en) * 2017-10-12 2018-04-20 郑州磨料磨具磨削研究所有限公司 A kind of single-crystal diamond Superhigh Pressure Hydraulic System
CN110873085A (en) * 2019-12-02 2020-03-10 郑州磨料磨具磨削研究所有限公司 Synchronous control method for hydraulic oil cylinder of cubic press

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104074809B (en) * 2013-03-25 2017-12-19 迷你液压增压器公司 Hydraulic system
CN104074809A (en) * 2013-03-25 2014-10-01 迷你液压增压器公司 Hydraulic system
US10337535B2 (en) 2013-03-25 2019-07-02 Minibooster Hydraulics A/S Hydraulic system
CN105705706A (en) * 2013-10-31 2016-06-22 沃尔沃建造设备有限公司 Flow control valve for construction equipment, having floating function
US10208456B2 (en) 2013-10-31 2019-02-19 Volvo Construction Equipment Ab Flow control valve for construction equipment, having floating function
CN105705706B (en) * 2013-10-31 2017-10-10 沃尔沃建造设备有限公司 Flow control valve for the engineering equipment with float function
CN103883338B (en) * 2014-03-26 2016-02-10 安徽理工大学 A kind of hydraulic support column self-boosting system containing hydraulic intensifier
CN103883338A (en) * 2014-03-26 2014-06-25 安徽理工大学 Hydraulic support stand column self-service pressurizing system comprising hydraulic pressurizer
CN105465061A (en) * 2014-09-30 2016-04-06 丹佛斯动力系统有限公司 Hydraulic system
US10087957B2 (en) 2014-09-30 2018-10-02 Danfoss Power Solutions Aps Hydraulic system
WO2017084225A1 (en) * 2015-11-19 2017-05-26 北京美高科技发展有限公司 Cable-type static-pressure setting tool
CN105889159B (en) * 2016-04-25 2018-01-23 天津优瑞纳斯智能装备有限公司 A kind of hydraulic system for possessing super-pressure fan-out capability
CN105889159A (en) * 2016-04-25 2016-08-24 天津优瑞纳斯智能装备有限公司 Hydraulic system with ultra-high pressure outputting capacity
CN106151126B (en) * 2016-08-26 2018-04-27 北京精密机电控制设备研究所 A kind of servo control mechanism of parallel operation is from boost-up circuit
CN106151126A (en) * 2016-08-26 2016-11-23 北京精密机电控制设备研究所 The servo control mechanism of a kind of parallel operation is from boost-up circuit
CN107939754A (en) * 2017-10-12 2018-04-20 郑州磨料磨具磨削研究所有限公司 A kind of single-crystal diamond Superhigh Pressure Hydraulic System
CN110873085A (en) * 2019-12-02 2020-03-10 郑州磨料磨具磨削研究所有限公司 Synchronous control method for hydraulic oil cylinder of cubic press
CN110873085B (en) * 2019-12-02 2021-07-27 郑州磨料磨具磨削研究所有限公司 Synchronous control method for hydraulic oil cylinder of cubic press

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Application publication date: 20090805