CN107237786A - Hydraulic station remotely conveys oil return buffer unit and application method - Google Patents
Hydraulic station remotely conveys oil return buffer unit and application method Download PDFInfo
- Publication number
- CN107237786A CN107237786A CN201710595435.9A CN201710595435A CN107237786A CN 107237786 A CN107237786 A CN 107237786A CN 201710595435 A CN201710595435 A CN 201710595435A CN 107237786 A CN107237786 A CN 107237786A
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- CN
- China
- Prior art keywords
- hydraulic
- oil return
- oil
- buffer
- switching valve
- Prior art date
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Classifications
-
- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
-
- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
Abstract
Hydraulic station remotely conveys oil return buffer unit, including hydraulic station, hydraulic actuating mechanism and oil return buffer unit, hydraulic station is connected with hydraulic actuating mechanism by pipeline, oil return buffer unit includes buffer oil tank, working barrel, fluid level controller, switching valve I, switching valve II and three-way switch valve, buffer oil tank is connected with working barrel, switching valve I, switching valve II, three-way switch valve and hydraulic station respectively by pipeline, and fluid level controller is arranged on buffer oil tank.Application method includes buffering two kinds of mode of operations of oil return and direct oil return, and direct oil return mode of operation is：Switching valve II is opened, and switching valve I is closed, and hydraulic oil is delivered directly to hydraulic station；Buffering oil return mode of operation is：Switching valve II is closed, and switching valve I is opened, and work pump startup, and B mouthfuls of connections of three-way switch valve A, C mouthfuls of cut-offs of A, the buffered fuel tank of hydraulic oil is transported to hydraulic station.Beneficial effect is：Simple in construction, fewer than independent hydraulic station equipment investment, safe and reliable to operation, working barrel need not frequent start-stop.
Description
Technical field
The invention belongs to hydraulic means field, more particularly to the long-range conveying technology of hydraulic station.
Technical background
Hydraulic station delivery hydraulic pressure oil, under normal circumstances, the fed distance of hydraulic station is limited, more than limit apart from when, due to
Hydraulic actuating mechanism oil return and leakage oil return resistance are larger, it may occur that hydraulic valve bank executing agency remarkable action even failure.It is existing
There is technology solution to this problem to be：A hydraulic station is set to give hydraulic actuating mechanism fuel feeding again.Prior art is not
It is enough；The cost for manufacturing hydraulic station is high, and line service amount is big.
The content of the invention
It is an object of the invention to provide an oil return buffer unit, solve hydraulic station and remotely convey problem of oil return.
The technical scheme is that：Hydraulic station remotely conveys oil return buffer unit, including hydraulic station and hydraulic pressure perform machine
Structure, is connected between hydraulic station and hydraulic actuating mechanism by hydraulic station fuel feed pump with hydraulic actuating mechanism oil return pipe, and its feature exists
In：The hydraulic station, which remotely conveys oil return buffer unit, also includes oil return buffer unit, and the oil return buffer unit includes buffering
Fuel tank, working barrel, fluid level controller, switching valve I, switching valve II and three-way switch valve, buffer oil tank pass through a pipeline and liquid
Pressure station is connected, and is connected by another pipeline with hydraulic actuating mechanism oil return pipe, the pipeline being connected in buffer oil tank with hydraulic station
On be connected with working barrel and three-way switch valve in turn, be connected to the A-B mouths of three-way switch valve, machine performed in buffer oil tank and hydraulic pressure
The connected pipeline of structure oil return pipe is provided with switching valve I, is provided with switching valve II on hydraulic actuating mechanism oil return pipe, buffer oil tank with
The connected pipeline of hydraulic actuating mechanism oil return pipe is connected on the pipe between switching valve II and hydraulic actuating mechanism, in buffer oil tank
Pipeline between the switching valve I and buffer oil tank of the pipeline being connected with hydraulic actuating mechanism oil return pipe sets a branch road and switched with threeway
The C mouths of valve are connected, and fluid level controller highest liquid level point and fluid level controller minimum liquid level point, Liquid level are set on fluid level controller
Device is arranged on buffer oil tank, and fluid level controller is electrically connected by electric control gear with three-way switch valve, is returned in hydraulic actuating mechanism
Hydraulic actuating mechanism leakage oil return pipe is set between oil pipe and hydraulic actuating mechanism.
Hydraulic station of the present invention remotely conveys oil return buffer unit, it is characterised in that：The electric control gear is programmable
Logic controller, single board computer or computer.
Hydraulic station of the present invention remotely conveys oil return buffer unit application method, including buffers oil return mode of operation and straight
Take back oily mode of operation, it is characterised in that：The direct oil return mode of operation is higher in environment temperature, and hydraulic oil viscosity will not be because
Fed distance length and use when increasing, method is as follows：Switching valve II is opened, switching valve I is closed, hydraulic oil performs machine through hydraulic pressure
Structure oil return pipe is delivered directly to hydraulic station；The buffering oil return mode of operation is relatively low in environment temperature, during hydraulic oil viscosity increase
Use, method is as follows：Switching valve II is closed, switching valve I is opened, work pump startup, A-B mouthfuls of connections of three-way switch valve, A-C mouthfuls
Hydraulic oil in cut-off, buffer oil tank is transported to hydraulic station for A-B mouthfuls by working barrel through three-way switch valve.
Hydraulic station of the present invention remotely conveys oil return buffer unit application method, it is characterised in that：The buffering oil return
In mode of operation, when liquid level reaches fluid level controller minimum liquid level point in buffer oil tank, the triggering of fluid level controller minimum liquid level point,
Make B-C mouthfuls of connections of three-way switch valve, B-A mouthfuls of cut-offs, the hydraulic oil of working barrel output does not enter back into hydraulic station, is changed to cut through threeway
The interior circulation pattern that B-C mouthfuls of valve is back to buffer oil tank is changed, meanwhile, the hydraulic oil not cracked ends switching valve of hydraulic actuating mechanism output
I enters buffer oil tank, when the liquid level of buffer oil tank reaches fluid level controller highest liquid level point, fluid level controller highest liquid level point
Triggering, makes the hydraulic oil in A-B mouthfuls of connections of three-way switch valve, A-C mouthfuls of cut-offs, buffer oil tank through A-B mouthfuls of conveyings of three-way switch valve
To hydraulic station.
Hydraulic station of the present invention remotely conveys oil return buffer unit application method, it is characterised in that：The working barrel is put down
Equal flow is more than the average discharge that hydraulic actuating mechanism works.
The beneficial effects of the invention are as follows：
1st, it is simple in construction, it is safe and reliable to operation, invest low.
2nd, when liquid level reaches fluid level controller minimum liquid level point in buffer oil tank, buffer unit is changed to interior circulation pattern, can
To avoid the frequent start-stop of working barrel.
Brief description of the drawings
Accompanying drawing 1 is the principle schematic diagram of the present invention.
In figure：1st, buffer oil tank, 2, working barrel, 3, fluid level controller, 4, switching valve I, 5, switching valve II, 6, threeway switching
Valve, 7 hydraulic stations, 8, hydraulic actuating mechanism, 9, hydraulic station fuel feed pump, 10, hydraulic actuating mechanism oil return pipe, 11, hydraulic pressure perform machine
Structure leaks oil return pipe, and 12, fluid level controller highest liquid level point, 13, fluid level controller minimum liquid level point.
Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Hydraulic station remotely conveys oil return buffer unit, including hydraulic station 7, hydraulic actuating mechanism 8 and oil return buffer unit, liquid
It is connected between pressure station 7 and hydraulic actuating mechanism 8 by hydraulic station fuel feed pump 9 with hydraulic actuating mechanism oil return pipe 10, oil return buffering
Device includes buffer oil tank 1, working barrel 2, fluid level controller 3, switching valve I 4, switching valve II 5 and three-way switch valve 6, buffering oil
Case 1 is connected by a pipeline with hydraulic station 7, is connected by another pipeline with the flowline of hydraulic actuating mechanism 8, in buffering oil
It is connected with working barrel 2 and three-way switch valve 6 on the pipeline that case 1 is connected with hydraulic station in turn, is connected to the A-B of three-way switch valve 6
Mouthful, switching valve I 4 is provided with the pipeline that buffer oil tank 1 is connected with hydraulic actuating mechanism oil return pipe, in hydraulic actuating mechanism oil return
Pipe is provided with switching valve II 5, buffer oil tank 1 and the pipeline that hydraulic actuating mechanism oil return pipe 10 is connected be connected to switching valve II 5 and
On pipe between hydraulic actuating mechanism 8, the switching valve I 4 for the pipeline being connected in buffer oil tank 1 with hydraulic actuating mechanism oil return pipe 10
Pipeline between buffer oil tank 1 sets a branch road and is connected with the C mouths of three-way switch valve 6, and fluid level controller is set on fluid level controller 3
Highest liquid level point 12 and fluid level controller minimum liquid level point 13, fluid level controller 3 are arranged on buffer oil tank 1, fluid level controller 3
Electrically connected by electric control gear with three-way switch valve 6, liquid is set between hydraulic actuating mechanism oil return pipe 10 and hydraulic actuating mechanism 8
Pressure actuator leaks oil return pipe 11, and electric control gear is computer.
Hydraulic station remotely conveys oil return buffer unit application method, including buffering oil return mode of operation and direct oil return work
Pattern, direct oil return mode of operation is higher in environment temperature, is used when hydraulic oil viscosity is relatively low, method is as follows：By switching valve II 5
Open, switching valve I 4 is closed, hydraulic oil is delivered directly to hydraulic station 7 through hydraulic actuating mechanism oil return pipe 10；Buffer oil return work
Pattern is relatively low in environment temperature, is used during hydraulic oil viscosity increase, method is as follows：Switching valve II 5 is closed, switching valve I 4 dozens
Open, working barrel 2 starts, 6A-B mouthfuls of connections of three-way switch valve, A-C mouthfuls of cut-offs, the hydraulic oil in buffer oil tank 1 passes through working barrel 2
Through three-way switch valve, 6A-B mouthfuls are transported to hydraulic station 7.
In " buffering oil return mode of operation ", when liquid level reaches fluid level controller minimum liquid level point 13 in buffer oil tank 1, liquid level
Controller minimum liquid level point 13 is triggered, and makes 6B-C mouthfuls of connections of three-way switch valve, B-A mouthfuls are ended, and the hydraulic oil that working barrel 2 is exported is not
Hydraulic station 7 is entered back into, is changed to be back to the interior circulation pattern of buffer oil tank 1 through 6B-C mouthfuls of three-way switch valve, meanwhile, hydraulic pressure is performed
Cracked ends switching valve I 4 does not enter buffer oil tank 1 to the hydraulic oil that mechanism 8 is exported, when the liquid level of buffer oil tank 1 reaches fluid level controller
During highest liquid level point 12, fluid level controller highest liquid level point 12 is triggered, and makes 6A-B mouthfuls of connections of three-way switch valve, and A-C mouthfuls of cut-offs are delayed
The hydraulic oil rushed in fuel tank 1 is transported to hydraulic station 7 for 6A-B mouthfuls through three-way switch valve.The average discharge of working barrel 2 is performed more than hydraulic pressure
The average discharge that mechanism 8 works.
Claims (5)
1. hydraulic station remotely conveys oil return buffer unit, including hydraulic station (7) and hydraulic actuating mechanism (8), hydraulic station (7) and liquid
It is connected between pressure actuator (8) by hydraulic station fuel feed pump (9) with hydraulic actuating mechanism oil return pipe (10), it is characterised in that：
The hydraulic station, which remotely conveys oil return buffer unit, also includes oil return buffer unit, and the oil return buffer unit includes buffer oil tank
(1), working barrel (2), fluid level controller (3), switching valve I (4), switching valve II (5) and three-way switch valve (6), buffer oil tank (1)
It is connected by a pipeline with hydraulic station (7), is connected by another pipeline with hydraulic actuating mechanism (8) oil return pipe, in buffering
It is connected with working barrel (2) and three-way switch valve (6) on the pipeline that fuel tank (1) is connected with hydraulic station in turn, three-way switch valve (6) is even
A-B mouthfuls are connected on, switching valve I (4) is provided with the pipeline that buffer oil tank (1) is connected with hydraulic actuating mechanism oil return pipe, in hydraulic pressure
Executing agency's oil return pipe is provided with switching valve II (5), the pipeline that buffer oil tank (1) is connected with hydraulic actuating mechanism oil return pipe (10)
It is connected on the pipe between switching valve II (5) and hydraulic actuating mechanism (8), in buffer oil tank (1) and hydraulic actuating mechanism oil return
Pipeline between the switching valve I (4) and buffer oil tank (1) of the connected pipeline of pipe (10) sets the C of a branch road and three-way switch valve (6)
Mouth is connected, and fluid level controller highest liquid level point (12) and fluid level controller minimum liquid level point (13), liquid are set on fluid level controller (3)
Level controller (3) is arranged on buffer oil tank (1), and fluid level controller (3) is connected by electric control gear with three-way switch valve (6),
Hydraulic actuating mechanism leakage oil return pipe (11) is set between hydraulic actuating mechanism oil return pipe (10) and hydraulic actuating mechanism (8).
2. hydraulic station as claimed in claim 1 remotely conveys oil return buffer unit, it is characterised in that：The electric control gear is to compile
Journey logic controller, single board computer or computer.
3. hydraulic station described in claim 1 remotely conveys oil return buffer unit application method, including buffering oil return mode of operation and
Direct oil return mode of operation, it is characterised in that：The direct oil return mode of operation is higher in environment temperature, and hydraulic oil viscosity will not
Used when increasing because of fed distance length, method is as follows：Switching valve II (5) is opened, switching valve I (4) is closed, and hydraulic oil is through liquid
Pressure actuator oil return pipe (10) is delivered directly to hydraulic station (7)；The buffering oil return mode of operation is relatively low in environment temperature, liquid
Used during force feed viscosity increase, method is as follows：Switching valve II (5) is closed, switching valve I (4) is opened, working barrel (2) starts, three
Hydraulic oil in A-B mouthfuls of connections of direction changeover valve (6), A-C mouthfuls of cut-offs, buffer oil tank (1) is by working barrel (2) through three-way switch valve
(6) A-B mouthfuls are transported to hydraulic station (7).
4. hydraulic station as claimed in claim 3 remotely conveys oil return buffer unit application method, it is characterised in that：It is described to buffer back
In oily mode of operation, when liquid level reaches fluid level controller minimum liquid level point (13) in buffer oil tank (1), the minimum liquid of fluid level controller
Site (13) is triggered, and makes B-C mouthfuls of connections of three-way switch valve (6), and B-A mouthfuls of cut-offs, the hydraulic oil of working barrel (2) output is not entered back into
Hydraulic station (7), is changed to be back to the interior circulation pattern of buffer oil tank (1) through B-C mouthfuls of three-way switch valve (6), meanwhile, hydraulic pressure is performed
Cracked ends switching valve I (4) does not enter buffer oil tank (1) to the hydraulic oil of mechanism (8) output, when the liquid level of buffer oil tank (1) reaches liquid
During level controller highest liquid level point (12), fluid level controller highest liquid level point (12) triggering makes A-B mouthfuls of three-way switch valve (6) even
Logical, A-C mouthfuls are ended, and the hydraulic oil in buffer oil tank (1) is transported to hydraulic station (7) for A-B mouthfuls through three-way switch valve (6).
5. hydraulic station as claimed in claim 4 remotely conveys oil return buffer unit application method, it is characterised in that：The working barrel
(2) average discharge is more than the average discharge that hydraulic actuating mechanism (8) works.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595435.9A CN107237786B (en) | 2017-07-20 | 2017-07-20 | Hydraulic station remotely conveys oil return buffer unit and application method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595435.9A CN107237786B (en) | 2017-07-20 | 2017-07-20 | Hydraulic station remotely conveys oil return buffer unit and application method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107237786A true CN107237786A (en) | 2017-10-10 |
| CN107237786B CN107237786B (en) | 2019-03-26 |
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ID=59991643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595435.9A Active CN107237786B (en) | 2017-07-20 | 2017-07-20 | Hydraulic station remotely conveys oil return buffer unit and application method |
Country Status (1)
| Country | Link |
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| CN (1) | CN107237786B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404744A (en) * | 2021-06-16 | 2021-09-17 | 北京华海基业机械设备有限公司 | Liquid return system |
| CN113653946A (en) * | 2021-01-29 | 2021-11-16 | 北京华海基业机械设备有限公司 | Non-backpressure liquid return system and large-flow plunger pump |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138838A (en) * | 1991-02-15 | 1992-08-18 | Caterpillar Inc. | Hydraulic circuit and control system therefor |
| JPH07259804A (en) * | 1992-04-10 | 1995-10-09 | Robert Bosch Gmbh | Hydraulic controller for operating cylinder |
| CN203297175U (en) * | 2013-04-28 | 2013-11-20 | 四川百世昌重型机械有限公司 | Closed hydraulic system |
| CN104147841A (en) * | 2014-07-15 | 2014-11-19 | 上海汇益控制系统股份有限公司 | Hydraulic oil purifying device |
-
2017
- 2017-07-20 CN CN201710595435.9A patent/CN107237786B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138838A (en) * | 1991-02-15 | 1992-08-18 | Caterpillar Inc. | Hydraulic circuit and control system therefor |
| JPH07259804A (en) * | 1992-04-10 | 1995-10-09 | Robert Bosch Gmbh | Hydraulic controller for operating cylinder |
| CN203297175U (en) * | 2013-04-28 | 2013-11-20 | 四川百世昌重型机械有限公司 | Closed hydraulic system |
| CN104147841A (en) * | 2014-07-15 | 2014-11-19 | 上海汇益控制系统股份有限公司 | Hydraulic oil purifying device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653946A (en) * | 2021-01-29 | 2021-11-16 | 北京华海基业机械设备有限公司 | Non-backpressure liquid return system and large-flow plunger pump |
| CN113404744A (en) * | 2021-06-16 | 2021-09-17 | 北京华海基业机械设备有限公司 | Liquid return system |
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| Publication number | Publication date |
|---|---|
| CN107237786B (en) | 2019-03-26 |
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