CN109236760A - A kind of two-ram hydraulic drive system - Google Patents
A kind of two-ram hydraulic drive system Download PDFInfo
- Publication number
- CN109236760A CN109236760A CN201710385995.1A CN201710385995A CN109236760A CN 109236760 A CN109236760 A CN 109236760A CN 201710385995 A CN201710385995 A CN 201710385995A CN 109236760 A CN109236760 A CN 109236760A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve group
- accumulator
- motor
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003921 oil Substances 0.000 claims abstract description 54
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 17
- 239000012530 fluid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000004224 protection Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000010727 cylinder oil Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/04—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the speed
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Landscapes
- 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 discloses a kind of two-ram hydraulic drive systems; it is characterized by comprising hydraulic oil container, motor, pump discharge oil path distribution valve group, accumulator and accumulators to export valve group; this system can drive heat collector rotation tracking sun angle in real time; tracking accuracy needed for guaranteeing, have urgent quickly positioning and in emergency circumstances defocus defencive function.
Description
Technical field
The invention belongs to solar energy thermal-power-generating technical field more particularly to a kind of two-ram hydraulic drive systems.
Background technique
Currently, solar energy thermal-power-generating technology enters the rapid development phase.The power generation of solar energy paraboloid trough type is by tracking too
The linear parabolic mirror of sun movement, which gathers solar radiation in the absorbing pipe at paraboloid focal line, heats heat transfer stream
The technology that body generates electricity.The key equipment in slot type power station mainly includes heat collector, absorbing pipe and thermal storage device etc..Driving tracking system
System is the core of heat collector day by day, is the guarantee that photo-thermal collector makes full use of solar energy.By driving tracking system, photo-thermal is adopted
Storage can track the sun from sunrise to sunset.Tracking and driving system generallys use hydraulic driving mode, fluid power system tool
Have the characteristics that anti-loading rigidity is big, running stability is strong.
Traditional hydraulic driving mode is single pump control, and motor is ordinary three-phase synchronous, invariablenes turning speed.Tracking driving
Manner of execution is step-by-step movement control, and 5~20 seconds or so the commutation actions in reversal valve interval are primary, and motor starts therewith, and movement is certain
Motor stops after angle.This tracking driving method, tracking accuracy is lower (about 1.7mrad), is not able to satisfy high-temperature molten salt work
The requirement of 1.2mrad high tracking accuracy required by matter.And motor frequent start-stop, reversal valve frequent movement seriously affect first service life.
When determining revolving speed motor driven using single pump, when implementing quickly positioning, mobile speed is non-adjustable.
Summary of the invention
The present invention overcomes the disadvantages of the prior art, provides a kind of trough type solar heat-collector fluid power system.
In order to solve the above-mentioned technical problem, the present invention is achieved by the following technical solutions:
A kind of two-ram hydraulic drive system, including hydraulic oil container 9, motor 7, pump discharge oil path distribution valve group 8, accumulator
6 and accumulator export valve group 11, be provided with motor and pump discharge oil path distribution valve group on hydraulic oil container, set in hydraulic oil container side
It is equipped with accumulator, double pump system is provided in hydraulic oil container, one is the plunger pump flexible at a slow speed for realizing oil cylinder, and one is
For realizing the gear pump of the quick-expansion of oil cylinder, it is provided with fan on the motor, in the lower section of the hydraulic oil container
It is provided with oil trap 10, bracket 12 is provided on the oil trap.
Compared with prior art, the invention has the benefit that
Using small flow plunger oil pump feed, and motor speed is changed by frequency converter and changes pump output flow, realized
The jogging speed of oil cylinder is flexible, and then realizes the rotation tracking and positioning of minute angle deviation, urgent quickly positioning and in emergency circumstances
Defocus defencive function: realize that the quick of driving device positions and rotary movement using gear wheel oil pump feed, and speed is adjustable；Separately
Equal safeguard protections movement is defocused in the case of outer setting accumulator realization emergency power off, in addition motor configures fan, guarantees motor
Heat dissipation needs, and extends motor service life.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention.
Fig. 2 is Hydraulic System Principle schematic diagram.
Wherein, 1 is the first oil cylinder, and 2 be the second oil cylinder, and 3 be balance valve group, and 4 be hydralic hose, and 5 be commutation valve group, and 6 are
Accumulator, 7 be motor, and 8 be pump discharge oil path distribution valve group, and 9 be hydraulic oil container, and 10 be oil trap, and 11 be accumulator outlet valve
Group, 12 be bracket, and 13 be liquidometer, and 14 be air filter, and 15 be temperature relay, and 16 be liquid level relay, and 17 be gear
Pump, 18 be plunger pump, and 19 be check valve, and 20 be return filter, and 21 be counterbalance valve, and 22 be overflow valve, and 23 be pressure gauge, and 24 are
H function solenoid directional control valve, 25 be stacked unidirectional valve, and 26 be y-function solenoid directional control valve, and 27 be bi-bit bi-pass electromagnetic switch
Valve, 28 be one-way throttle valve, and 29 be throttle valve, and 30 be pressure switch, and 31 be balanced valve, and 32 be bi-bit bi-pass reversal valve, 33
For check valve.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawing:
As shown in the figure, hydraulic oil container 9, motor 7, pump discharge oil path distribution valve group 8, commutation valve group 5, balance valve group 3, the
One oil cylinder 1, the second oil cylinder 2, accumulator 6 and accumulator export valve group 11, are provided with motor and pump discharge oil circuit on hydraulic oil container
Valve group is distributed, hydraulic oil container side is provided with accumulator, accumulator outlet valve group, the accumulation of energy are provided with below accumulator
Device outlet valve group is connected with pump discharge oil path distribution valve group, and pump discharge oil path distribution valve group is connected with commutation valve group, and commutate valve group
It is respectively connected with the first oil cylinder, the second oil cylinder, double pump is provided in hydraulic oil container, one is stretching at a slow speed for realizing oil cylinder
Plunger pump, one for for realizing oil cylinder quick-expansion gear pump, the exit of the first oil cylinder and the second oil cylinder be arranged
Oil return valve.
Moreover, being provided with fan on the motor.
Moreover, the accumulator exports between valve group and pump discharge oil path distribution valve group, pump discharge oil path distribution valve group
It is connect by hydralic hose 4 between commutation valve group, between commutation valve group and the first oil cylinder, the second oil cylinder.
Moreover, being provided with oil trap 10 below the hydraulic oil container.
Moreover, being provided with bracket 12 on the oil trap.
Moreover, in a kind of trough type solar heat-collector fluid power system, used rated operating pressure
For 15MPa.
As shown in Hydraulic System Principle schematic diagram, hydraulic small pump is plunger pump 18, discharge capacity 0.1ml/r, fuel-displaced successively to pass through
Pump outlet check valve 8, y-function reversal valve 15, balanced valve 21 enter cylinder efficient chamber, and plunger pump 18 exports oil stream amount by motor
Rotational speed regulation meets the oil inlet quantity for entering the first oil cylinder, the second oil cylinder size chamber in real time, and rotary shaft is pushed to drive heat collector load
Operation realizes the high-precision reproduction of sun angle, meets heat collector and focus needs in real time.According to two oil of difference of rotational angle
The mode of cylinder effect can be divided into pushing away, pushing away three kinds of modes of action such as drawing with drawing, one, and oil cylinder size chamber sets oil return reversal valve (two
Position two way selected valve 32), guarantee that stress of the oil cylinder at dead-centre position does not interfere.Oil cylinder inlet and outlet hydraulic fluid port is respectively provided with balance
Valve 31 guarantees the needs of heat collector operating stably while meeting the holding of the position precision when stopping.Oil cylinder oil return is through counterbalance valve
21, return filter 20 flows back to fuel tank.Make the oil return line moment full of oil liquid and meets filtering accuracy needs.Big pump is set simultaneously
(gear pump 17), discharge capacity 3.5ml/r realize the quick positioning and quick acting in emergency circumstances of drive system.Pump discharge
Overflow valve 22 is respectively set and carries out pressure setting and protection.Movement needs are defocused to meet drive system under power blackout situation,
Accumulator 6 and pressure switch 30, relay real-time detection accumulator outlet pressure are provided in oil circuit.Once pressure is low
In setting value, H function reversing valve 24 starts commutation action, and gear pump 17 starts to keep accumulator can to accumulator fuel feeding
Certain pressure value.Normally opened two-position two-way electromagnetic directional valve 27 is arranged in accumulator outlet, this valve is closed in normal work, once
It powers off oil liquid and is discharged from accumulator and push cylinder action, meet and promptly defocus etc. movement needs.Liquid is arranged in this hydraulic system simultaneously
The status alerts such as position, oil temperature, filter obstruction, realize safeguard protection.
Following table is the logical action table of hydraulic system:
It describes the invention in detail, but content is only the preferred embodiment of the present invention, cannot be recognized above
For for limiting practical range of the invention.Any changes and modifications in accordance with the scope of the present application should all still return
Belong within patent covering scope of the invention.
Claims (1)
1. a kind of two-ram hydraulic drive system, it is characterised in that: including hydraulic oil container, motor, pump discharge oil path distribution valve group,
Accumulator and accumulator export valve group, motor and pump discharge oil path distribution valve group are provided on hydraulic oil container, in hydraulic oil container one
Side is provided with accumulator, and double pump system is provided in hydraulic oil container, and one is the plunger pump flexible at a slow speed for realizing oil cylinder,
One is the gear pump of the quick-expansion for realizing oil cylinder, fan is provided on the motor, in the hydraulic oil container
Lower section is provided with oil trap, is provided with bracket on the oil trap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385995.1A CN109236760A (en) | 2017-05-26 | 2017-05-26 | A kind of two-ram hydraulic drive system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710385995.1A CN109236760A (en) | 2017-05-26 | 2017-05-26 | A kind of two-ram hydraulic drive system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109236760A true CN109236760A (en) | 2019-01-18 |
Family
ID=65082593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710385995.1A Pending CN109236760A (en) | 2017-05-26 | 2017-05-26 | A kind of two-ram hydraulic drive system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109236760A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921145A (en) * | 1995-07-07 | 1997-01-21 | Yanmar Diesel Engine Co Ltd | Backhoe |
| JP2002225654A (en) * | 2001-01-05 | 2002-08-14 | Shoko Yo | Impact defending device for automobile |
| CN102815335A (en) * | 2012-09-06 | 2012-12-12 | 三一矿机有限公司 | Steering and braking integrated control system and mineral dumper |
| CN103552276A (en) * | 2013-11-04 | 2014-02-05 | 江苏国力锻压机床有限公司 | Slide block control system of hydraulic machine |
| CN103910311A (en) * | 2014-04-10 | 2014-07-09 | 安徽合力股份有限公司 | Hydraulic system of empty container stacking locomotive |
| US20150337914A1 (en) * | 2014-05-23 | 2015-11-26 | Volkswagen Aktiengesellschaft | Hydraulic supply apparatus |
| CN207349183U (en) * | 2017-05-26 | 2018-05-11 | 天津滨海光热跟踪技术有限公司 | A kind of two-ram hydraulic drive system |
-
2017
- 2017-05-26 CN CN201710385995.1A patent/CN109236760A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0921145A (en) * | 1995-07-07 | 1997-01-21 | Yanmar Diesel Engine Co Ltd | Backhoe |
| JP2002225654A (en) * | 2001-01-05 | 2002-08-14 | Shoko Yo | Impact defending device for automobile |
| CN102815335A (en) * | 2012-09-06 | 2012-12-12 | 三一矿机有限公司 | Steering and braking integrated control system and mineral dumper |
| CN103552276A (en) * | 2013-11-04 | 2014-02-05 | 江苏国力锻压机床有限公司 | Slide block control system of hydraulic machine |
| CN103910311A (en) * | 2014-04-10 | 2014-07-09 | 安徽合力股份有限公司 | Hydraulic system of empty container stacking locomotive |
| US20150337914A1 (en) * | 2014-05-23 | 2015-11-26 | Volkswagen Aktiengesellschaft | Hydraulic supply apparatus |
| CN207349183U (en) * | 2017-05-26 | 2018-05-11 | 天津滨海光热跟踪技术有限公司 | A kind of two-ram hydraulic drive system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240718 Address after: Shop No. 247 Zhongshan Road, Ducheng Town, Yunan County, Yunfu City, Guangdong Province, China 527199 Applicant after: Guangdong Jinfangyuan Energy Storage Technology Co.,Ltd. Country or region after: China Address before: No. 421, Building 5, No. 188 Rixin Road, Binhai Science and Technology Park, Binhai New Area, Tianjin, 300301 Applicant before: TIANJIN BINHAI PHOTOTHERMAL TRACKING TECHNOLOGY Co.,Ltd. Country or region before: China |