CN104976170A - Hydraulic pump station with energy-saving buffering protection device - Google Patents
Hydraulic pump station with energy-saving buffering protection device Download PDFInfo
- Publication number
- CN104976170A CN104976170A CN201510415271.8A CN201510415271A CN104976170A CN 104976170 A CN104976170 A CN 104976170A CN 201510415271 A CN201510415271 A CN 201510415271A CN 104976170 A CN104976170 A CN 104976170A
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- China
- Prior art keywords
- hydraulic pump
- energy
- conservation
- oil hydraulic
- accumulator
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Classifications
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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
- 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
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
-
- 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
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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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
- F15B2211/00—Circuits for servomotor systems
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
- F15B2211/20507—Type of prime mover
- F15B2211/20515—Electric motor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a hydraulic pump station with an energy-saving buffering protection device. The hydraulic pump station is reasonable in structure, and can effectively save energy, and the starting impact pressure of the hydraulic pump station can be effectively buffered. According to the hydraulic pump station with the energy-saving buffering protection device, an energy-saving buffer valve is arranged between a hydraulic pump and an oil tank, and is connected with a first energy accumulator, and the first energy accumulator is connected with a hydraulic system oil supply pipe through a check valve. A pressure relay and a second energy accumulator are arranged on the hydraulic system oil supply pipe. A control box controls the hydraulic pump station and the energy-saving buffer valve to work according to the work condition of a hydraulic system. The hydraulic pump station is simple in structure, high in work efficiency and low in use cost. According to system working conditions, the standby work time of the hydraulic pump station can be effectively shortened, the starting current of a motor can be reduced, system response time can be shortened, and on the premise of meeting production requirements, the energy-saving aim of the hydraulic pump station is achieved.
Description
Technical field
The present invention relates to a kind of hydraulic power unit with energy-conservation buffer protection device.
Background technique
Hydraulic power unit system is power source equipment important in metallurgical industry, and it is responsible for as hydraulic actuator provides the task of pressure oil-source.At present, in metallurgical industry, hydraulic power unit mostly is continuous duty, available machine time is generally 24 hours, but owing to not needing actuator's at every moment action in actual production, therefore the hydraulic power unit most of the time is all in pressurize armed state, if Constant Pump System, motor is in be waited to carry working state, a large amount of hydraulic oil overflows from relief valve, and electric energy wastes, and also brings noise problem when Hydraulic System Oil temperature rise and relief valve overflow; Even variable pump systems, oil hydraulic pump is in unloaded state when awaiting orders, but the unloaded operation electric current of motor still wastes.Part factory has realized that this problem, selects to turn off when hydraulic power unit is awaited orders, and open when need enable, but need manually-operable, automaticity is low, and operative's intensity is large, in addition, the simple start and stop of hydraulic system also can not meet the usage requirement of system, because hydraulic system is high-pressure system, in order to avoid the startup surge pressure of oil hydraulic pump, increase the life-span of hydraulic system element, startup that usual employing is zero load, namely before oil hydraulic pump starts, the unloading valve of oil hydraulic pump is first opened, then electrical power drives the zero load startup of oil hydraulic pump, time delay is after several seconds, unloading valve cuts out, pressure oil is delivered in system, actuator starts action, this process generally needs about 5s, if counting people in is the time transmitted orders and operate, time can be longer, can not meet onsite application requirement.If cancel zero load Starting mode; although can the response time be improved; but the impact force of oil hydraulic pump cannot be avoided; this can reduce the life-span of hydraulic element and sealing, increases workman's amount of maintenance, loses more than gain; therefore be necessary to improve this problem; automatically can control to reach, meet production and application requirement, also can protect hydraulic power unit and energy-conservation object.
For the problems referred to above, the invention provides a kind of energy-conservation, effectively reduce the hydraulic power unit with energy-conservation buffer protection device that oil hydraulic pump starting under load impacts, reduces oil hydraulic pump starting time.
For achieving the above object, the present invention has the hydraulic power unit of energy-conservation buffer protection device, described hydraulic power unit comprises fuel tank, the oil hydraulic pump be communicated with fuel tank, motor, be arranged on the energy-conservation trimmer valve between oil hydraulic pump and fuel tank, the hydraulic system fuel supply line be communicated with described oil hydraulic pump, be connected to the first accumulator on described hydraulic system fuel supply line, second accumulator, pressure relay, the first one-way valve is provided with between described oil hydraulic pump and described system fuel supply line, the second one-way valve is provided with between described first accumulator and described hydraulic system fuel supply line, described energy-conservation trimmer valve has three ports, the inlet port of described port difference connecting fluid press pump, fuel tank, first accumulator, described energy-conservation trimmer valve, oil hydraulic pump, motor is controlled according to operating mode by hydraulic control system, the first described accumulator coordinates energy-conservation trimmer valve to form the energy-conservation buffer protection device providing oil hydraulic pump and electric motor starting power, fluid is introduced the inlet port of oil hydraulic pump by the first described accumulator by energy-conservation trimmer valve, hydraulic oil promotes oil hydraulic pump and turns to desired speed along operative orientation, oil hydraulic pump drives drive motor to turn to desired speed along operative orientation.
Further, also comprise electromagnetic relief valve, described electromagnetic relief valve is connected with fuel tank and oil hydraulic pump.
Further, the high pressure filter be connected between described oil hydraulic pump and hydraulic system fuel supply line is also comprised.
The present invention has the hydraulic power unit of energy-conservation buffer protection device, the start and stop of hydraulic system can control automatically, without contacting directly between first accumulator and the second accumulator, the running parameter such as pressure, oil reserve presetting the second accumulator can meet the repeatedly action of system actuator, ensures the interval time of hydraulic power unit start and stop in the reasonable scope; Simultaneously, the first accumulator through the running parameter such as preset pressure, oil reserve coordinates energy-conservation trimmer valve that hydraulic power unit can be made to have an initial pressure, and drive motor reaches certain revolution, thus reduce electric motor starting electric current, reduce the impact of oil hydraulic pump starting under load, make system pressure smooth transition to working pressure, reduce the starting time of oil hydraulic pump; Meanwhile, the special construction in energy-conservation trimmer valve can also reduce the generation of oil hydraulic pump emptying phenomenon, thus reduces the operating noise of oil hydraulic pump; Buffer protection measure when rational hydraulic power unit dead time and primer fluid press pump, significantly will increase the working life of oil hydraulic pump, plays effect that is energy-conservation to hydraulic power unit and protection.
Accompanying drawing explanation
Fig. 1 is the hydraulic pump station structure schematic diagram that the present invention has energy-conservation buffer protection device.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be further described.
As shown in Figure 1, the present embodiment has the hydraulic power unit of energy-conservation buffer protection device, described hydraulic power unit comprises fuel tank 1, the oil hydraulic pump 3 be communicated with fuel tank, motor, be arranged on the energy-conservation trimmer valve 2 between oil hydraulic pump and fuel tank, the hydraulic system fuel supply line be communicated with described oil hydraulic pump, be connected to the first accumulator 7 on described hydraulic system fuel supply line, second accumulator 9, pressure relay 8, the first one-way valve 4 is provided with between described oil hydraulic pump and described system fuel supply line, the second one-way valve 6 is provided with between described first accumulator and described hydraulic system fuel supply line, first accumulator 7 be connected the second one-way valve 6 between hydraulic system fuel supply line, and be directly connected with energy-conservation trimmer valve 2, described energy-conservation trimmer valve has three ports, the inlet port of described port difference connecting fluid press pump, fuel tank, first accumulator, described energy-conservation trimmer valve, oil hydraulic pump, motor is controlled according to operating mode by hydraulic control system, the first described accumulator coordinates energy-conservation trimmer valve to form the energy-conservation buffer protection device providing oil hydraulic pump and electric motor starting power, fluid is introduced the inlet port of oil hydraulic pump by the first described accumulator by energy-conservation trimmer valve, hydraulic oil promotes oil hydraulic pump and turns to desired speed along operative orientation, oil hydraulic pump drive motor turns to desired speed along operative orientation, described first accumulator provides the initial start power of described oil hydraulic pump and motor.
Further, the present embodiment has the hydraulic power unit of energy-conservation buffer protection device, also comprises electromagnetic relief valve 11, and described electromagnetic relief valve is connected with fuel tank and oil hydraulic pump, also comprises the high pressure filter 5 be connected between described oil hydraulic pump and hydraulic system fuel supply line.
During real work, hydraulic power unit initiating switchup normally starts (zero load startup) according to original control, when hydraulic system pressure reaches upper pressure limit value set by pressure relay, first accumulator, the made liquid of the second accumulator are described, ready, if now without actuator's action, time delay termination of pumping, now the first accumulator 7 and the second accumulator 9 fluid are full of in running order.After this when actuator needs action, through the running parameter such as preset pressure, oil reserve the second accumulator 9 will release pressure oil to meet the repeatedly action of actuator.When system pressure reduces to set by pressure relay during low pressure limit; control system controls energy-conservation trimmer valve and fluid in the first accumulator 7 is introduced oil hydraulic pump inlet port; pressure oil will promote oil hydraulic pump and rotate along operative orientation; system pressure can slowly promote; oil hydraulic pump also can rotate along operative orientation by drive motor simultaneously; when oil hydraulic pump drive motor arrives certain rotating speed; control system 10 cuts off the fuel feeding of the first accumulator 7; motor obtains electric; hydraulic power unit is started working; system pressure starts to rise, and shuts down, constantly circulate after arriving the pressure setting upper limit.Because motor has initial speed, this will reduce the inrush current of motor greatly, coordinates the revolution that oil hydraulic pump drive motor can be rotated to control in the reasonable scope through the first accumulator 7 of the running parameter such as preset pressure, oil reserve and energy-conservation trimmer valve.After the first accumulator 7 connected by energy-conservation trimmer valve; motor time delay obtains electric; energy-conservation trimmer valve stops to hydraulic pumping pressure oil simultaneously; oil hydraulic pump normally works; complete the action of actuator and liquid is rushed to accumulator; when system pressure reaches pressure upper limit set by pressure relay, system-down also waits for periodic duty next time.
The present embodiment has the hydraulic power unit of energy-conservation buffer protection device; structure is simple, and working efficiency is high, and user cost is low; can according to system condition; effective minimizing hydraulic power unit standby working time, reduces electric motor starting electric current, while reduction system high pressure impacts; realize hydraulic power unit band carry startup and automatically control; improve system response time, under the prerequisite meeting production requirement, reach the object that hydraulic power unit is energy-conservation.
Above; be only preferred embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, the protection domain that protection scope of the present invention should define with claim is as the criterion.
Claims (3)
1. one kind has the hydraulic power unit of energy-conservation buffer protection device, it is characterized in that: described hydraulic power unit comprises fuel tank, the oil hydraulic pump be communicated with fuel tank, motor, be arranged on the energy-conservation trimmer valve between oil hydraulic pump and fuel tank, the hydraulic system fuel supply line be communicated with described oil hydraulic pump, be connected to the first accumulator on described hydraulic system fuel supply line, second accumulator, pressure relay, the first one-way valve is provided with between described oil hydraulic pump and described system fuel supply line, the second one-way valve is provided with between described first accumulator and described hydraulic system fuel supply line, described energy-conservation trimmer valve has three ports, the inlet port of described port difference connecting fluid press pump, fuel tank, first accumulator, described energy-conservation trimmer valve, oil hydraulic pump, motor is controlled according to operating mode by hydraulic control system, the first described accumulator coordinates energy-conservation trimmer valve to form the energy-conservation buffer protection device providing oil hydraulic pump and electric motor starting power, fluid is introduced the inlet port of oil hydraulic pump by the first described accumulator by energy-conservation trimmer valve, hydraulic oil promotes oil hydraulic pump and turns to desired speed along operative orientation, oil hydraulic pump drive motor turns to desired speed along operative orientation.
2. the hydraulic power unit with energy-conservation buffer protection device according to claim 1, is characterized in that: also comprise electromagnetic relief valve, and described electromagnetic relief valve is connected with fuel tank and oil hydraulic pump.
3. the hydraulic power unit with energy-conservation buffer protection device according to claim 1, is characterized in that: also comprise the high pressure filter be connected between described oil hydraulic pump and hydraulic system fuel supply line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415271.8A CN104976170B (en) | 2015-07-15 | 2015-07-15 | Hydraulic pump station with energy-saving buffering protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510415271.8A CN104976170B (en) | 2015-07-15 | 2015-07-15 | Hydraulic pump station with energy-saving buffering protection device |
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| Publication Number | Publication Date |
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| CN104976170A true CN104976170A (en) | 2015-10-14 |
| CN104976170B CN104976170B (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510415271.8A Active CN104976170B (en) | 2015-07-15 | 2015-07-15 | Hydraulic pump station with energy-saving buffering protection device |
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| CN (1) | CN104976170B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122124A (en) * | 2016-08-12 | 2016-11-16 | 中色科技股份有限公司 | Stretching-machine hydraulic power unit oil supply system |
| CN106694565A (en) * | 2017-01-09 | 2017-05-24 | 中冶华天工程技术有限公司 | Control device of high-speed wire rod thin oil lubrication pressure oil storage tank |
| CN108278188A (en) * | 2018-01-17 | 2018-07-13 | 山东钢铁集团日照有限公司 | A kind of Constant Pump System and pressure regulation method |
| CN110388338A (en) * | 2019-08-13 | 2019-10-29 | 中国船舶重工集团公司第七一九研究所 | Offshore platform novel energy-storing hydraulic system |
| CN115059720A (en) * | 2022-05-13 | 2022-09-16 | 江苏徐工工程机械研究院有限公司 | Rear suspension vibration buffer control system of tractor and tractor |
| CN116793821A (en) * | 2023-08-17 | 2023-09-22 | 麦格思维特(上海)流体工程有限公司 | Pulse test bed |
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| US4226166A (en) * | 1977-02-16 | 1980-10-07 | Frank Roger F | Control unit for the supply of a work unit fed in parallel from a hydraulic station common to other units |
| CN201003517Y (en) * | 2006-12-15 | 2008-01-09 | 宁波方力集团有限公司 | Hot-smelting butt hydraulic station |
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| CN102155440A (en) * | 2011-04-06 | 2011-08-17 | 上海朝田实业有限公司 | Hydraulic energy-saving motor device of hydraulic pump station |
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| CN204828093U (en) * | 2015-07-15 | 2015-12-02 | 中冶华天南京工程技术有限公司 | Hydraulic power unit with energy -conserving buffer protection device |
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Patent Citations (7)
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| US4226166A (en) * | 1977-02-16 | 1980-10-07 | Frank Roger F | Control unit for the supply of a work unit fed in parallel from a hydraulic station common to other units |
| CN201003517Y (en) * | 2006-12-15 | 2008-01-09 | 宁波方力集团有限公司 | Hot-smelting butt hydraulic station |
| HRP20090351A2 (en) * | 2009-06-12 | 2010-12-31 | Božić Ante | Hydraulic energy station - battery |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122124A (en) * | 2016-08-12 | 2016-11-16 | 中色科技股份有限公司 | Stretching-machine hydraulic power unit oil supply system |
| CN106694565A (en) * | 2017-01-09 | 2017-05-24 | 中冶华天工程技术有限公司 | Control device of high-speed wire rod thin oil lubrication pressure oil storage tank |
| CN108278188A (en) * | 2018-01-17 | 2018-07-13 | 山东钢铁集团日照有限公司 | A kind of Constant Pump System and pressure regulation method |
| CN108278188B (en) * | 2018-01-17 | 2019-09-10 | 山东钢铁集团日照有限公司 | A kind of Constant Pump System and pressure regulation method |
| CN110388338A (en) * | 2019-08-13 | 2019-10-29 | 中国船舶重工集团公司第七一九研究所 | Offshore platform novel energy-storing hydraulic system |
| CN115059720A (en) * | 2022-05-13 | 2022-09-16 | 江苏徐工工程机械研究院有限公司 | Rear suspension vibration buffer control system of tractor and tractor |
| CN116793821A (en) * | 2023-08-17 | 2023-09-22 | 麦格思维特(上海)流体工程有限公司 | Pulse test bed |
| CN116793821B (en) * | 2023-08-17 | 2023-11-24 | 麦格思维特(上海)流体工程有限公司 | Pulse test bed |
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| CN104976170B (en) | 2017-05-10 |
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