CN109237824A - A kind of trough type solar heat-collector fluid power system - Google Patents
A kind of trough type solar heat-collector fluid power system Download PDFInfo
- Publication number
- CN109237824A CN109237824A CN201710384606.3A CN201710384606A CN109237824A CN 109237824 A CN109237824 A CN 109237824A CN 201710384606 A CN201710384606 A CN 201710384606A CN 109237824 A CN109237824 A CN 109237824A
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- Prior art keywords
- valve group
- oil
- oil cylinder
- type solar
- solar heat
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- 239000012530 fluid Substances 0.000 title claims abstract description 19
- 239000003921 oil Substances 0.000 claims abstract description 98
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 16
- 239000007788 liquid Substances 0.000 claims description 5
- 239000010727 cylinder oil Substances 0.000 abstract description 4
- 230000003116 impacting effect Effects 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects 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
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
- F15B11/17—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
-
- 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
- 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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Pressure Circuits (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
Abstract
The invention discloses a kind of trough type solar heat-collector fluid power systems, it is characterized by comprising hydraulic oil container, motor, pump discharge oil path distribution valve group, commutation valve group, balance valve group, the first oil cylinder, the second oil cylinder, accumulator and accumulators to export valve group, this system can drive heat collector rotation tracking sun angle in real time, guarantee required tracking accuracy；With urgent quickly positioning and in emergency circumstances defocus defencive function；Reduce system pressure；Oil return valve is set in oil cylinder oil outlet, guarantees that oil cylinder dead-centre position excessively, avoids impacting with high pressure in the case where no pressure.
Description
Technical field
The invention belongs to solar energy thermal-power-generating technical field more particularly to a kind of trough type solar heat-collector hydraulic-driven systems
System.
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.
The existing hot power generation project technical requirements heat collector collecting efficiency of slot type fused salt with fused salt heat accumulation facility and with
Track precision is higher.Thus, it is desirable that tracking and driving system anti-loading stabilizing power with higher and real-time dynamic response capability.
Traditional hydraulic driving mode is single pump control, and motor is ordinary three-phase synchronous, invariablenes turning speed.Track drive actions mode
For step-by-step movement control, 5~20 seconds or so the commutation actions in reversal valve interval are primary, and motor starts therewith, move electricity after certain angle
Machine stops.This tracking driving method, tracking accuracy is lower (about 1.7mrad), is not able to satisfy required by high-temperature molten salt working medium
1.2mrad high tracking accuracy requirement.And motor frequent start-stop, reversal valve frequent movement seriously affect first service life.Again, it passes
The more a height of 21MPa of setting pressure for fluid power system of uniting, the service life for being unfavorable for hydraulic component and sealing element extend.In addition,
Due to determining revolving speed motor driven using single pump, quick locating 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 trough type solar heat-collector fluid power system, including hydraulic oil container 9, motor 7, pump discharge oil path distribution valve
Group 8, commutation valve group 5, balance valve group 3, the first oil cylinder 1, the second oil cylinder 2, accumulator 6 and accumulator export valve group 11, hydraulic oil
It is provided with motor and pump discharge oil path distribution valve group on case, hydraulic oil container side is provided with accumulator, is set below accumulator
It is equipped with accumulator outlet valve group, the accumulator outlet valve group is connected with pump discharge oil path distribution valve group, the distribution of pump discharge oil circuit
Valve group is connected with commutation valve group, and commutation valve group is respectively connected with the first oil cylinder, the second oil cylinder, and double pump is provided in hydraulic oil container
System, one is the plunger pump to stretch at a slow speed for realizing oil cylinder, and one is the gear pump of the quick-expansion for realizing oil cylinder,
Oil return valve is arranged in the exit of first oil cylinder and the second oil cylinder.
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.
Compared with prior art, the invention has the benefit that
1, the rotation of driving heat collector tracks sun angle in real time, guarantees required tracking accuracy 1.2mrad: using small flow
Plunger oil pump feed, and motor speed is changed by frequency converter and changes pump output flow, realize that the jogging speed of oil cylinder is flexible, into
And realize the rotation tracking and positioning of minute angle deviation.
2, urgent quickly positioning and in emergency circumstances defocus defencive function: driving device is realized using gear wheel oil pump feed
Quick positioning and rotary movement, and speed is adjustable；In addition setting accumulator realize in the case of emergency power off defocus it is equal safely
Protection act.
3, system pressure is reduced, extend the service life of component: this system uses rated operating pressure for 15MPa, is
Medium voltage network.Operating pressure decreases compared with traditional slot type tracks fluid power system, is conducive to extend hydraulic member in this way
The service life of gas part and sealing element, the probability that reduction system leaks.
4, oil cylinder outlet setting oil return valve (the bi-bit bi-pass reversal valve in figure) guarantees stress of the oil cylinder at dead-centre position
It does not interfere: can be divided into according to the mode that two oil cylinders of difference of rotational angle act on and push away together, push away three kinds of drawing etc. with drawing, one
The mode of action, thus will necessarily exist oil cylinder be reduced to minimum stroke again start elongation process.Since this process is continuous dynamic
Make, to avoid two cylinder actions from interfering, oil return valve is set in oil cylinder oil outlet, i.e., an oil cylinder is close minimum wherein
Before stroke, oil return valve is opened, so that the positive and negative chamber of oil cylinder is communicated with oil return, guarantees oil cylinder dead-centre position in the feelings of no pressure
Under condition excessively, impacting with high pressure is avoided, extends oil cylinder and uses service life.
5, motor is lower than rated power operation, is conducive to the extension of electrical machinery life: motor is lower than volume when normal tracking operation
Fixed power, in addition motor configures fan, guarantees that motor radiating needs, 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, a kind of trough type solar heat-collector fluid power system, including hydraulic oil container 9, motor 7, pump out
Mouth oil path distribution valve group 8, commutation valve group 5, balance valve group 3, the first oil cylinder 1, the second oil cylinder 2, accumulator 6 and accumulator outlet valve
11 are organized, motor and pump discharge oil path distribution valve group is provided on hydraulic oil container, hydraulic oil container side is provided with accumulator, accumulation of energy
Accumulator outlet valve group is provided with below device, the accumulator outlet valve group is connected with pump discharge oil path distribution valve group, pumps out
Mouth oil path distribution valve group is connected with commutation valve group, and commutation valve group is respectively connected with the first oil cylinder, the second oil cylinder, in hydraulic oil container
It is provided with double pump, one is the plunger pump to stretch at a slow speed for realizing oil cylinder, and one is the tooth of the quick-expansion for realizing oil cylinder
Oil return valve is arranged in the exit of the first oil cylinder and the second oil cylinder in wheel pump.
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 (6)
1. a kind of trough type solar heat-collector fluid power system, it is characterised in that: including hydraulic oil container, motor, pump discharge oil
Path distribution valve group, commutation valve group, balance valve group, the first oil cylinder, the second oil cylinder, accumulator and accumulator export valve group, hydraulic oil
It is provided with motor and pump discharge oil path distribution valve group on case, hydraulic oil container side is provided with accumulator, is set below accumulator
It is equipped with accumulator outlet valve group, the accumulator outlet valve group is connected with pump discharge oil path distribution valve group, the distribution of pump discharge oil circuit
Valve group is connected with commutation valve group, and commutation valve group is respectively connected with the first oil cylinder, the second oil cylinder, and double pump is provided in hydraulic oil container
System, one is the plunger pump to stretch at a slow speed for realizing oil cylinder, and one is the gear pump of the quick-expansion for realizing oil cylinder,
Oil return valve is arranged in the exit of first oil cylinder and the second oil cylinder.
2. a kind of trough type solar heat-collector fluid power system according to claim 1, it is characterised in that: described
Fan is provided on motor.
3. a kind of trough type solar heat-collector fluid power system according to claim 1, it is characterised in that: the storage
Can device outlet valve group and pump discharge oil path distribution valve group between, pump discharge oil path distribution valve group and commutation valve group between, reversal valve
It is connected by hydralic hose between group and the first oil cylinder, the second oil cylinder.
4. a kind of trough type solar heat-collector fluid power system according to claim 1, it is characterised in that: in the liquid
Oil trap is provided with below pressure oil case.
5. a kind of trough type solar heat-collector fluid power system according to claim 1, it is characterised in that: in the collection
Bracket is provided on oil groove.
6. a kind of trough type solar heat-collector fluid power system according to claim 1, it is characterised in that: described
In a kind of trough type solar heat-collector fluid power system, used rated operating pressure is 15MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384606.3A CN109237824A (en) | 2017-05-26 | 2017-05-26 | A kind of trough type solar heat-collector fluid power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710384606.3A CN109237824A (en) | 2017-05-26 | 2017-05-26 | A kind of trough type solar heat-collector fluid power system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109237824A true CN109237824A (en) | 2019-01-18 |
Family
ID=65082518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710384606.3A Pending CN109237824A (en) | 2017-05-26 | 2017-05-26 | A kind of trough type solar heat-collector fluid power system |
Country Status (1)
| Country | Link |
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| CN (1) | CN109237824A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283961A (en) * | 2020-11-11 | 2021-01-29 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
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| CN101982655A (en) * | 2010-11-03 | 2011-03-02 | 天津市欧曼液压装备系统工程有限公司 | Proportional and hydraulic tracking system for trough solar thermal power generating condenser |
| EP2455685A1 (en) * | 2010-11-22 | 2012-05-23 | HAWE Hydraulik SE | Electro-hydraulic adjustment device of a solar trough |
| 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 |
| CN102997451A (en) * | 2012-12-25 | 2013-03-27 | 东南大学 | Hydraulic drive device of parabolic trough condensing solar collector |
| CN105090135A (en) * | 2015-08-28 | 2015-11-25 | 苏州斯卡柏通讯技术有限公司 | Hydraulic driving system for solar condenser |
| CN207113268U (en) * | 2017-05-26 | 2018-03-16 | 天津滨海光热跟踪技术有限公司 | A kind of trough type solar heat-collector fluid power system |
-
2017
- 2017-05-26 CN CN201710384606.3A patent/CN109237824A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2439946Y (en) * | 2000-08-07 | 2001-07-25 | 程崇昆 | Fully-automatic hydraulic oil-extraction machine |
| CN101982655A (en) * | 2010-11-03 | 2011-03-02 | 天津市欧曼液压装备系统工程有限公司 | Proportional and hydraulic tracking system for trough solar thermal power generating condenser |
| EP2455685A1 (en) * | 2010-11-22 | 2012-05-23 | HAWE Hydraulik SE | Electro-hydraulic adjustment device of a solar trough |
| 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 |
| CN102997451A (en) * | 2012-12-25 | 2013-03-27 | 东南大学 | Hydraulic drive device of parabolic trough condensing solar collector |
| CN105090135A (en) * | 2015-08-28 | 2015-11-25 | 苏州斯卡柏通讯技术有限公司 | Hydraulic driving system for solar condenser |
| CN207113268U (en) * | 2017-05-26 | 2018-03-16 | 天津滨海光热跟踪技术有限公司 | A kind of trough type solar heat-collector fluid power system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112283961A (en) * | 2020-11-11 | 2021-01-29 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
| CN112283961B (en) * | 2020-11-11 | 2022-06-21 | 上海电气液压气动有限公司 | Double-pump joint control solar photo-thermal tracking device |
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