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 PDF

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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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CN
China
Prior art keywords
valve group
oil
oil cylinder
type solar
solar heat
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
Application number
CN201710384606.3A
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Chinese (zh)
Inventor
官景栋
张瑜
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Guangdong Jinfangyuan Energy Storage Technology Co ltd
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Tianjin Binhai Photothermal Tracking Technology Co Ltd
Priority date (The priority date 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 date listed.)
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Application filed by Tianjin Binhai Photothermal Tracking Technology Co Ltd filed Critical Tianjin Binhai Photothermal Tracking Technology Co Ltd
Priority to CN201710384606.3A priority Critical patent/CN109237824A/en
Publication of CN109237824A publication Critical patent/CN109237824A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B11/00Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/16Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
    • F15B11/17Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors using two or more pumps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02Installations or systems with accumulators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15BSYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08Servomotor 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

A kind of trough type solar heat-collector fluid power system
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.
CN201710384606.3A 2017-05-26 2017-05-26 A kind of trough type solar heat-collector fluid power system Pending CN109237824A (en)

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CN201710384606.3A CN109237824A (en) 2017-05-26 2017-05-26 A kind of trough type solar heat-collector fluid power system

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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

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Cited By (1)

* Cited by examiner, † Cited by third party
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

Citations (7)

* Cited by examiner, † Cited by third party
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

Patent Citations (7)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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Effective date of registration: 20240712

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

TA01 Transfer of patent application right