CN104791315A - Continuous fixed ratio hydraulic step-down transformer - Google Patents
Continuous fixed ratio hydraulic step-down transformer Download PDFInfo
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- CN104791315A CN104791315A CN201510224867.XA CN201510224867A CN104791315A CN 104791315 A CN104791315 A CN 104791315A CN 201510224867 A CN201510224867 A CN 201510224867A CN 104791315 A CN104791315 A CN 104791315A
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- cylinder
- pipe
- piston
- solenoid valve
- way electromagnetic
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to a hydraulic transformer, in particular to a continuous fixed ratio hydraulic step-down transformer. According to the device, a two-position seven-way solenoid valve is used for continuously converting high pressure input in a hydraulic series connection cylinder into low pressure output at a certain step-down ratio, a body structure comprises the series connection cylinder, the two-position seven-way solenoid valve, a left piston, a right piston, a connecting rod, an oil return tank pipeline, a high pressure pipeline and a low pressure pipeline. When a solenoid valve signal line is powered on, the two-position seven-way solenoid valve works at the solenoid valve right station, the pistons and the connecting rod move rightwards, and a low pressure fluid medium is output from a right cylinder right pipe; when the pistons move to the right end of the series connection cylinder, the two-position seven-way solenoid valve is powered off and works at the solenoid valve left station, and a left cylinder body of the series connection cylinder achieves fluid medium step-down in the similar way. The ratio of low pressure oil to high pressure oil is the ratio of difference between the section area of the pistons and the section area of the connecting rod to the section of the pistons. The hydraulic step-down transformer can be used for achieving continuous fixed ratio hydraulic step-down, and the hydraulic flow is determined by the on-off frequency of the solenoid valve signal line.
Description
Technical field
The present invention relates to a kind of hydraulic transformer, particularly one is fixed than fluid pressure drop depressor continuously, and the step-down efficiently of the high pressure oil of constant pressure network is diverted to each user or load.
Background technique
Hydraulic transformer refers to a kind of hydraulic element that can realize pressure conversion in hydraulic transmission, and it is equivalent to pressure converter, can obtain energy from hydraulic constant pressure network system without restriction loss.Hydraulic transformer just has U. S. Patent to be described as far back as nineteen sixty-five, until the eighties in 20th century, hydraulic transformer does not structurally all have significant improvement always, substantially be all the structural type adopting axial piston pump and axial piston motor mechanically to be linked together by stiff shaft, its working pressure is high, in, use in low-pressure hydraulic system, efficiency is very low, and complex structure, cost is high, is not suitable for widespread adoption.Sometimes constant pressure network provides pressure for the load that multiple working pressure is different, as directly adopted traditional hydraulic transformer, cost is too high on the one hand, on the other hand be difficult to realize automatic control, as direct step-down, then hydraulic energy loss is too large, causes system to be generated heat and efficiency greatly reduces.In order to solve the problem, special invention is a kind of fixed than fluid pressure drop depressor continuously.
Summary of the invention
Main purpose of the present invention is that when being different operating pressure user's fuel feeding for constant pressure network, energy dissipation is serious, and a kind of high efficiency of seeking, low cost, structure simple, be easy to automatically control and steady and continuous fixed than fluid pressure drop pressure device.
In order to realize foregoing invention object, the present invention makes full use of the joint work of two seven three-way electromagnetic valves and series connection cylinder, the high pressure liquid of recovery is made to enter series connection cylinder by the transposition of two seven three-way electromagnetic valves, export low pressure liquid, when solenoid valve signaling line gives the electrical signal of certain frequency, series connection cylinder inner carrier, just with corresponding frequencies to-and-fro motion between end about series connection cylinder, realizes lasting from pressure duct to low pressure line of liquid and determines step-down ratio transformation.
Agent structure of the present invention comprises series connection cylinder and two seven three-way electromagnetic valves, series connection cylinder is connected by pipeline with two seven three-way electromagnetic valves, described series connection cylinder comprises left cylinder and right cylinder, left cylinder is communicated with by piston with right cylinder, piston comprises left and right piston, left piston at left cylinder, right piston at right cylinder, left piston and right piston are fixedly connected by connecting rod, connecting rod can between left cylinder, right cylinder chamber wall hole in horizontally slip, gap between this hole and connecting rod is very little, and the liquid in left cylinder, right cylinder can not pass through the mutual seepage in this gap.Two seven three-way electromagnetic valves have two stations, each station has 7 interface external pipelines, four interfaces of two seven three-way electromagnetic valve upper-end surfaces are from left to right connected with the left pipe of left cylinder, the right pipe of left cylinder, the left pipe of right cylinder, the right pipe of right cylinder respectively, and three interfaces of lower end surface are from left to right connected with fuel tank pipeline, pressure duct, low pressure line respectively.During the energising of solenoid valve signaling line, two seven three-way electromagnetic valves are operated in right working position, and by oil circuit in two seven three-way electromagnetic valves, pressure duct and the left pipe of right cylinder are connected, and low pressure line and the right pipe of right cylinder are connected, and fuel tank pipeline and the left pipe of left cylinder, the right pipe of left cylinder are connected; During power-off, two seven three-way electromagnetic valves are operated in left station, and by oil circuit in two seven three-way electromagnetic valves, pressure duct and the right pipe of left cylinder are connected, and low pressure line and the left pipe of left cylinder are connected, and fuel tank pipeline and the right pipe of right cylinder, the left pipe of right cylinder are connected.
When the present invention works, rear two seven three-way electromagnetic valves of solenoid valve signaling line energising are operated in right working position, high pressure liquid enters (left chamber) on the left of right cylinder by pressure duct, the left pipe of right cylinder, promotes right piston, connecting rod and left piston and together moves right, until the right-hand member of series connection cylinder.The liquid in left side (left chamber) of right cylinder and the area of contact of piston are less than the sectional area of right piston, and liquid pressure reduces, and the ratio of reduction is that right piston cross-section amasss the ratio amassed with the difference of connecting rod sectional area and right piston cross-section.Low pressure liquid, from the right side (right chamber) of right cylinder, exports through the right pipe of right cylinder, low pressure line, can enter accumulator or directly utilize.On the right side of left cylinder, the liquid in (right chamber) enters the left side (left chamber) of left cylinder by the right pipe of left cylinder, the left pipe of left cylinder simultaneously, and a part of liquid enters the left side (left chamber) of left cylinder until liquid is full of completely by fuel tank pipeline, the left pipe of left cylinder.
Then solenoid valve signaling line power-off, two seven three-way electromagnetic valves are operated in left position, high pressure liquid enters (right chamber) on the right side of left cylinder by pressure duct, the right pipe of left cylinder, promotes left piston, connecting rod and right piston and is together moved to the left, until the left end of series connection cylinder.Liquid on the right side of left cylinder in (right chamber) and the area of contact of piston are less than the sectional area of left piston, and liquid pressure reduces, and the ratio of reduction is the difference of left piston sectional area and connecting rod sectional area and the ratio of left piston sectional area.Low pressure liquid, from the left side (left chamber) of left cylinder, exports through the left pipe of left cylinder, low pressure line, can enter accumulator or directly utilize.On the left of right cylinder, the liquid in (left chamber) enters the right side (right chamber) of right cylinder by the left pipe of right cylinder, the right pipe of right cylinder simultaneously, and a part of liquid enters the right side (right chamber) of right cylinder until liquid is full of completely by fuel tank pipeline, the right pipe of right cylinder.
Solenoid valve signaling line repeats above-mentioned energising, power process, and the high pressure liquid of pressure duct constantly exports from low pressure line after determining step-down ratio step-down.The frequency of power on/off determines flow and speed, when keeping energising or power-off, exporting, realize load latch functions without flow.
This device can be used to realize engineering machinery hydraulic power and fixes step-down ratio step-down.Its working medium also can be other fluid such as water, gas, has that structure is simple, the pressure loss is little, is easy to control and the feature such as stable, application demand and industrialization prospect wide.
Accompanying drawing explanation
Fig. 1 is that the present invention is a kind of fixed than schematic diagram when connecting series connection cylinder right cylinder during fluid pressure drop depressor solenoid valves continuously;
Fig. 2 is that the present invention is a kind of fixed than schematic diagram when connecting series connection cylinder left cylinder during the solenoid valve power-off of fluid pressure drop depressor continuously.
Number in the figure: 1-two seven three-way electromagnetic valves, the right position of 2-solenoid valve, 3-solenoid valve signaling line, the right pipe of the left cylinder of 4-, the left pipe of the right cylinder of 5-, the right pipe of the right cylinder of 6-, 7-series connection cylinder, the right cylinder of 8-, the right piston of 9-, 10-connecting rod, 11-left piston, the left cylinder of 12-, the left pipe of the left cylinder of 13-, 14-return spring, the left position of 15-solenoid valve, 16-fuel tank pipeline, 17-pressure duct, 18-low pressure line.
Embodiment
Also be described further by reference to the accompanying drawings below by embodiment.
Embodiment:
Agent structure of the invention process comprises series connection cylinder 7 and two seven three-way electromagnetic valves 1, series connection cylinder 7 is connected by pipeline with two seven three-way electromagnetic valves 1, described series connection cylinder 7 comprises left cylinder 12 and right cylinder 8, left cylinder 12 is communicated with by piston with right cylinder 8, piston comprises left and right piston, left piston 11 is at left cylinder 12, right piston 9 is at right cylinder 8, left piston 11 and right piston 9 are fixedly connected by connecting rod 10, , connecting rod 10 can at left cylinder 12, between right cylinder 8 chamber wall hole in horizontally slip, gap between this hole and connecting rod 10 is very little, left cylinder 12, liquid in right cylinder 8 can not pass through the mutual seepage in this gap.Two seven three-way electromagnetic valves 1 have two stations, each station has 7 interface external pipelines, four interfaces of two seven three-way electromagnetic valve 1 upper-end surfaces are from left to right connected with the left pipe of left cylinder 13, the right pipe of left cylinder 4, the left pipe of right cylinder 5, the right pipe 6 of right cylinder respectively, and three interfaces of lower end surface are from left to right connected with fuel tank pipeline 16, pressure duct 17, low pressure line 18 respectively.When solenoid valve signaling line 3 is energized, two seven three-way electromagnetic valves 1 are operated in right working position, by oil circuit in two seven three-way electromagnetic valves 1, pressure duct 17 and the left pipe 5 of right cylinder are connected, and low pressure line 18 and the right pipe 6 of right cylinder are connected, and fuel tank pipeline 16 and the left pipe of left cylinder 13, the right pipe 4 of left cylinder are connected; During power-off, two seven three-way electromagnetic valves 1 are operated in left station, and by oil circuit in two seven three-way electromagnetic valves 1, pressure duct 17 and the right pipe 4 of left cylinder are connected, and low pressure line 18 and the left pipe 13 of left cylinder are connected, and fuel tank pipeline 16 and the right pipe of right cylinder 6, the left pipe 5 of right cylinder are connected.
In work of the present invention, rear two seven three-way electromagnetic valves 1 of solenoid valve signal 3 line energising are operated in right working position, high pressure liquid enters (left chamber) on the left of right cylinder 8 by pressure duct 17, the left pipe of right cylinder 5, promote right piston 9, connecting rod 10 and left piston 11 together to move right, until the right-hand member of series connection cylinder 7.The liquid in left side (left chamber) of right cylinder 8 and the area of contact of right piston 9 are less than the sectional area of right piston 9, and liquid pressure reduces, and the ratio of reduction is the difference of right piston 9 sectional area and connecting rod 10 sectional area and the ratio of right piston 9 sectional area.Low pressure liquid, from the right side (right chamber) of right cylinder 8, exports through the right pipe 6 of right cylinder, low pressure line 18, can enter accumulator or directly utilize.The liquid of left cylinder 12 right side (right chamber) enters the left side (left chamber) of left cylinder 12 by the right pipe of left cylinder 4, the left pipe of left cylinder 13 simultaneously, and a part of liquid enters the left side (left chamber) of left cylinder 12 until liquid is full of completely by fuel tank pipeline 16, the left pipe of left cylinder 13.
Then solenoid valve signaling line 3 power-off, two seven three-way electromagnetic valves 1 are operated in left position, high pressure liquid enters (right chamber) on the right side of left cylinder 12 by pressure duct 17, the right pipe of left cylinder 4, promotes left piston 11, connecting rod 10 and right piston 9 and is together moved to the left, until the left end of series connection cylinder 7.Liquid on the right side of left cylinder 12 in (right chamber) and the area of contact of left piston 11 are less than the sectional area of left piston 11, and liquid pressure reduces, and the ratio of reduction is the difference of left piston 11 sectional area and connecting rod 10 sectional area and the ratio of left piston 11 sectional area.Low pressure liquid, from the left side (left chamber) of left cylinder 12, exports through the left pipe 13 of left cylinder, low pressure line 18, can enter accumulator or directly utilize.On the left of right cylinder 8, the liquid in (left chamber) enters the right side (right chamber) of right cylinder 8 by the left pipe of right cylinder 5, the right pipe of right cylinder 6 simultaneously, and a part of liquid enters the right side (right chamber) of right cylinder 8 until liquid is full of completely by fuel tank pipeline 16, the right pipe of right cylinder 6.
Solenoid valve signaling line 3 repeats above-mentioned energising, power process, and the high pressure liquid of pressure duct 17 constantly exports from low pressure line 18 after determining step-down ratio step-down.The frequency of power on/off determines step-down flow and speed, when keeping energising or power-off, exporting, realize load latch functions without flow.
Claims (2)
1. determine than fluid pressure drop depressor continuously for one kind, it is characterized in that comprising series connection cylinder and two seven three-way electromagnetic valves, series connection cylinder is connected by pipeline with two seven three-way electromagnetic valves, described series connection cylinder comprises left cylinder and right cylinder, left cylinder is communicated with by piston with right cylinder, piston comprises left and right piston, and left piston is at left cylinder, right piston at right cylinder, and left piston and right piston are fixedly connected by connecting rod; Two seven three-way electromagnetic valves have two stations, each station has seven interface external pipelines, four interfaces of two seven three-way electromagnetic valve upper-end surfaces are from left to right connected with the left pipe of left cylinder, the right pipe of left cylinder, the left pipe of right cylinder, the right pipe of right cylinder respectively, and three interfaces of lower end surface are from left to right connected with fuel tank pipeline, pressure duct, low pressure line respectively.
2. one according to claim 1 is fixed than fluid pressure drop depressor continuously, during the energising of solenoid valve signaling line, two seven three-way electromagnetic valves are operated in right working position, by oil circuit in two seven three-way electromagnetic valves, pressure duct and the left pipe of right cylinder are connected, low pressure line and the right pipe of right cylinder are connected, and fuel tank pipeline and the left pipe of left cylinder, the right pipe of left cylinder are connected; During power-off, two seven three-way electromagnetic valves are operated in left station, and by oil circuit in two seven three-way electromagnetic valves, pressure duct and the right pipe of left cylinder are connected, and low pressure line and the left pipe of left cylinder are connected, and fuel tank pipeline and the right pipe of right cylinder, the left pipe of right cylinder are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224867.XA CN104791315A (en) | 2015-05-05 | 2015-05-05 | Continuous fixed ratio hydraulic step-down transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510224867.XA CN104791315A (en) | 2015-05-05 | 2015-05-05 | Continuous fixed ratio hydraulic step-down transformer |
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| Publication Number | Publication Date |
|---|---|
| CN104791315A true CN104791315A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510224867.XA Pending CN104791315A (en) | 2015-05-05 | 2015-05-05 | Continuous fixed ratio hydraulic step-down transformer |
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| CN (1) | CN104791315A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397441A (en) * | 2018-05-06 | 2018-08-14 | 泸州职业技术学院 | A kind of decompressing and speed-regulating device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084254A (en) * | 1992-09-16 | 1994-03-23 | 付连起 | Energy-saving extra-high pressure gas gas (liquid) body output unit |
| JPH08219102A (en) * | 1995-02-09 | 1996-08-27 | Riken Seiki Kk | Pressure control method for super high pressure producing device using anvil |
| CN201496217U (en) * | 2009-09-07 | 2010-06-02 | 危毅 | Concrete pumping hydraulic device |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN104481944A (en) * | 2014-10-23 | 2015-04-01 | 三一汽车起重机械有限公司 | Depressurizing system and engineering machinery |
-
2015
- 2015-05-05 CN CN201510224867.XA patent/CN104791315A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1084254A (en) * | 1992-09-16 | 1994-03-23 | 付连起 | Energy-saving extra-high pressure gas gas (liquid) body output unit |
| JPH08219102A (en) * | 1995-02-09 | 1996-08-27 | Riken Seiki Kk | Pressure control method for super high pressure producing device using anvil |
| CN201496217U (en) * | 2009-09-07 | 2010-06-02 | 危毅 | Concrete pumping hydraulic device |
| CN102383769A (en) * | 2011-10-14 | 2012-03-21 | 上海大学 | Power compensation type hydraulic pressurizing water injection system |
| CN104481944A (en) * | 2014-10-23 | 2015-04-01 | 三一汽车起重机械有限公司 | Depressurizing system and engineering machinery |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108397441A (en) * | 2018-05-06 | 2018-08-14 | 泸州职业技术学院 | A kind of decompressing and speed-regulating device |
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| PB01 | Publication | ||
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Application publication date: 20150722 |