CN110530660A

CN110530660A - A kind of slot type photo-thermal power station loop performance detection system and its detection method

Info

Publication number: CN110530660A
Application number: CN201910365732.3A
Authority: CN
Inventors: 卢智恒; 徐海卫; 朱斌
Original assignee: Shuangliang Longteng Photothermal Technology (beijing) Co Ltd
Current assignee: Shuangliang Longteng Photothermal Technology (beijing) Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2019-12-03

Abstract

The present invention provides a kind of slot type photo-thermal power station loop performance detection system, it is connect by pipeline with single test loop, single test loop is isolated with other circuits, and detection system is installed in cabinet (14), it and is moveable, comprising: HTF system (1)；Control system (2)；And sensing system (3)；Control system (2) by control wiring to HTF system (1) send control signal, with control HTF system (1) complete detection system in and single test loop in HTF circulation；The measuring device of sensing system (3) is arranged on the pipeline in system, for measuring the flow and out temperature of single test loop (16), the performance in slot type photo-thermal power station single circuit is analyzed, while equipment each in detection system is monitored.Also disclose corresponding loop performance detection method, comprising: new HTF is added into expansion drum；Circuit preheating；HTF is injected in circuit；Focus tracking is simultaneously tested；Circuit is cooling；Empty HTF.

Description

A kind of slot type photo-thermal power station loop performance detection system and its detection method

Technical field

The present invention relates to solar light-heat power-generation performance detection technologies, and a kind of in particular to slot type photo-thermal power station circuit property It can detection.

Background technique

Solar light-heat power-generation (Concentrated Solar Power, referred to as " CSP ") is a kind of Salar light-gathering Hot generation technology assembles the direct radiation (DNI) of the sun by various condenser mirrors, by heating fluid working substance (heat Transfer fluid calls " HTF " in the following text) heat is collected, high-temperature steam, pushing turbine power generation are generated using heat exchange.CSP The technology path of mainstream is divided according to solar energy acquisition mode at present, be broadly divided into tower, slot type, Fresnel and Four class of dish-style, at present in global range be completed or in the project built, be most with trough technology.Trough type solar power generation will Numerous groove type paraboloid concentrating collectors are arranged by series-parallel mode, are collected heat by fluid working substance and are reached higher temperatures Then degree generates steam, driving Turbo-generator Set power generation by further heat exchange.Trough type solar power generation is mainly by optically focused Heat collector (or " Jing Chang "), heat-exchange system, regenerative apparatus and four part of turbine generator device composition.Its system schematic is such as Shown in Fig. 1.

Although trough technology passes through the development of many years, technical maturity is higher, commercialization is also realized substantially, in power station Performance detection means and method are still weak, and the mirror field performance detection of slot type photo-thermal power station is at present with sub-unit performance certification It is main, and to composition slot type Jing Chang smallest standalone unit --- single circuit there is no corresponding performance detection means and detection side Method, needless to say general single loop performance detection standard.Domestic photo-thermal power station construction mode is at present to divide island subpackage and electricity Based on over contract of standing combines, it is different from external single power station General Contract Pattern, as mirror field subcontractor and project owner or electricity When the contractor that stands joins, need to carry out individual, complete performance detection to the single circuit of slot type Jing Chang to check and accept, thus The performance indicator for determining handover front and back, accomplishes that division of authority & responsibility is clear, prevents subsequent generation legal dispute and potential technical risk. Since international photo-thermal project is based on the General Contract Pattern of power station, often ignore to the performance detection step in single circuit or Performance Substitute Indexes are used as using other alternate parameters (annual electricity generating capacity in such as entire power station), therefore also lack the inspection of profession at present Measurement equipment objectively evaluates slot type mirror field performance so can seriously affect, and it is long to may cause power station debugging cycle, performance inspection Survey and check and accept it is difficult, subcontractor and contractor shift onto each other responsibility and a series of relevant interest conflicts of generation the problems such as.

Current more existing small-scale test platform and detection device for slot type circuit, but be all fixed and non-moving Formula, such as need to detect, it is necessary to will photo-thermal component to be measured disassembly after transport testing stand to, detection device location is detected, And detect work and usually require a couple of days to several weeks, intermediate transportation is added, entire detection cycle time-consuming can be long.In addition, by What it is in inspection is only part photo-thermal component, and often will appear can not accurately, completely measure the circuit practical power station Zhong Getiao fortune The case where row index, therefore the loop performance in slot type power station is detected, this detection mode is insufficient.

In short, the prior art has the following disadvantages:

1, in project construction lack to installed to the overall photothermal conversion efficiency in the single slot type circuit at project scene into The reliable method of row detection；

2, the whole audience can integrally be debugged after project is built up, but lacks and the performance of specific each subsystem is surveyed The means of examination；

3, when circuit is broken down, lack the emptying after carrying out isolation of system to single circuit, injection heat-transfer working medium hand Section；

4, heat collecting field land occupation is big, and fixed equipment can not flexibly measure the heat collector loop performance of any position in heat collecting field；

5, because indefinite bring of contract terms boundary is mutually shifted responsibility onto others in terms of system performance examination, time delays is seriously dragged Slow building time point.

Summary of the invention

In order to overcome the shortcomings of the prior art, the present invention provides a kind of slot type photo-thermal power station loop performance detection system System, for testing the thermal property in each slot type circuit, whole system is equipped with corresponding equipment and pipeline, also contemplates simultaneously Mobility and the container for accommodating equipment pipe, obtain convenient flexible detection characteristic.

The purpose of the present invention is to provide a kind of slot type photo-thermal power station loop performance detection system, the detection system passes through Pipeline is connect with single test loop (16), and single test loop (16) is isolated with other circuits, and the detection system is respectively mounted It in cabinet (14), and is moveable, comprising:

HTF system (1)；

Control system (2)；And

Sensing system (3)；

Wherein the control system (2) sends control signal to the HTF system (1) by control wiring, to control State HTF system (1) complete in the detection system and in the single test loop (16) HTF circulation；

The measuring device of the sensing system (3) is arranged on the pipeline in system, for measuring single test loop (16) flow and out temperature, for analyzing the performance in the slot type photo-thermal power station single circuit, while to detection system Interior each equipment is monitored, to keep detection system safe and reliable.

Preferably, further includes: compressed air or inert gas system (4), the compressed air or inert gas system (4) It is connected to expansion drum (7), cooling system (6) and detection system pipeline, for sealing HTF system (1), maintenance connects expansion The pressure of tank (7), cooling system (6), circuit pre-heating system, circulating pump (5), pipe-line system (15) and single test loop (16) Power and to single test loop (16) inject or empty HTF.

Preferably, the compressed air or inert gas system (4) include one or more gas cylinders, and each gas cylinder is matched A standby individual valve, gas cylinder are placed straight up on the performance detecting system, and be placed among cabinet (14) or Except cabinet (14) at cabinet (14), each gas cylinder is additionally provided with individual pressure regulator, and is furnished with check-valves.

Preferably, gas cylinder heat-insulation and heat-preservation cabinet is set in the cabinet (14), and is set on the outside of the gas cylinder heat-insulation and heat-preservation cabinet The first electric heater (10-1) is set to heat gas cylinder heat-insulation and heat-preservation cabinet, thus guarantee that the surface of gas cylinder temperature reaches minimum requirements, institute Stating has horizontal gird above cabinet (14), pulley is arranged on the horizontal gird, installs hand chain type elevator on pulley, will Gas cylinder is promoted from ground onto the performance detecting system.

Preferably, the HTF system (1) includes circulating pump (5), the expansion drum (7), cooling system by piping connection (6) and the second electric heater (10-2)；Wherein:

Circulating pump (5) is for driving HTF in slot type photo-thermal power station loop performance detection system and single test loop (16) Circulation, the circulating pump (5) in real time provide needed for flow and pressure difference；

The expansion drum (7) is used to store the HTF of test and absorbs volume swell increment in HTF expanded by heating, swollen Swell (7) is horizontally mounted, and is connected with compressed air or inert gas system (4) to keep the pressure limit of system；

The cooling system (6) is air cooler or water cooler, for the heat collected by single test loop (16) that dissipates, Achieve the purpose that adjust heat dissipation capacity by adjusting the rotation speed of the fan of the air cooler or the cold water flow of the water cooler to use Mouth temperature reaches sets requirement；

Second electric heater (10-2) is arranged on the pipeline of the HTF system (1), second electric heater (10-2) uses thermal resistance form, and the resistance value of the thermal resistance is related to HTF characteristic and heat dissipation of pipeline characteristic, the second electric heating Device (10-2) is used to for the temperature of HTF being maintained at a suitable interval, and second electric heater (10-2) includes instrument to protect It demonstrate,proves and is correctly run in its range of operation shown in corresponding data table, the instrument includes temp probe as safety element, Second electric heater (10-2) further includes the heating group with control panel, and the control panel allows to receive from temp probe Signal, the temp probe is used to measure the temperature of the interior measurement point of the HTF system (1), and the temp probe controls thermoelectricity The start and stop of resistance under normal operation.

Preferably, the sensing system (3) includes temperature sensor, flowmeter, pressure sensor and liquidometer, described Temperature sensor includes at least two, single test loop (16) inlet and outlet is separately positioned on, for measuring single test Circuit (16) out temperature；The control valve exit of the circulating pump downstream setting, control system is arranged in the flowmeter By adjusting the flow of circulating pump and control valve the control HTF of circulation in HTF system and single test loop (16), control inspection Degree of testing the speed simultaneously ensures that detection process and the course of work of actual trough solar power generation system meet, according to single test loop (16) the HTF flow in out temperature and circuit, is calculated the calorifics power in circuit；The most important pressure passes Sensor is arranged in the expansion drum and the single test loop (16) import and export, measures the pressure in expansion drum respectively And the pressure value of single test loop (16), for judging monitoring system and single test loop (16) whether normal operation, Pressure-measuring-point should be also arranged in detection system other positions when necessary, to guarantee system general safety；The liquidometer is arranged swollen Swell measures the liquid level of HTF in expansion drum, when liquid level is higher than expansion drum (7) total height 85%, system alarm prompt discharge HTF, when liquid level permission liquid level minimum lower than expansion drum (7), HTF is replenished in time in system alarm prompt.

Preferably, further includes: dissipation separation system (8), the dissipation separation system (8) includes dissipation knockout drum, in Portion stores a certain amount of water, the HTF and its high temperature contained in the separable tail gas being discharged by expansion drum (7) relief valve interface pipe The degradation product generated is cracked, when the dissipation separation system (8) is in running order, content is water, HTF and the degradation Object, dissipation knockout drum are directly communicated with external environment.

It preferably, further include HTF injection pump (9), for HTF to be injected into the performance detecting system, the HTF note Entering pump (9) has using HTF as medium and can be with the characteristic of continuous operation.

Preferably, the pipe-line system (15) is for connection inside performance detecting system and performance detecting system and single Connection between test loop (16), pipe-line system (15) can be divided into following four part according to its function and by medium therein Subsystem:

HTF tube sub-systems are connect for HTF system (1) with detection system other parts；

Dissipation separate pipeline subsystem is connect for the knockout drum that dissipates (8) with detection system other parts；

Expansion drum tube sub-systems are connect for expansion drum (7) with detection system other parts, expansion drum pipeline System and the expansion drum (7) are tightly connected；

Gas pipeline subsystem is connect for compressed air or inert gas system (4) with detection system other parts；

It preferably, further include the single test loop preheating being made of preheating fan (12), third electric heater (10-3) System, for being preheated to the vacant duct of single test loop (16), to avoid carrying out HTF in single test loop (16) Before injection, HTF is caused to solidify because pipe temperature is too low, the single test loop pre-heating system is made by preheating fan (12) The air or inert gas of third electric heater (10-3) heating achieve the purpose that preheating by return.

Preferably, further include the cyclone separator (11) being arranged in single test loop (16), the whirlwind point is set The mistake for making thermal resistance heats in the case where preheating fan (12) drive air or inert gas pass through return from device (11) Cheng Zhong, HTF drop present in circuit with air motion, using the filter being arranged in the cyclone separator (11) and point From device removal before it reaches preheating fan (12), pass through an automatic valve after the HTF being collected into is collected by separator HTF is transported in the dissipation separation system (8) or individually accommodating container.

Preferably, the loop performance detection system is equipped with installation anemobiagraph, be mounted on test macro top or near It at certain altitude, measures wind speed and is passed to control system (2), strong wind damage single unexpected in test process is avoided to test back Heat collector on road (16).

Preferably, slot type photo-thermal power station loop-around test system cooperation weather station (13) uses, the weather station (13) Include at least: wind instrument, Hygrothermograph and solar irradiation meter, weather station (13) by the loop-around test system integration or by Scene separately provides, and environmental parameter needed for weather station (13) are used to record test macro operation, the environmental parameter is for true The thermal property of order test loop (16)；And ensure the circuit safety under high irradiation high wind speed, the control of weather station (13) The data information of each sensor of system real-time collecting, and carry out processing data information.

The object of the invention is also to provide a kind of based on the progress of above-mentioned slot type photo-thermal power station loop performance detection system Loop performance detection method, comprising steps of

Step 1, HTF is newly-increased: new HTF being added into expansion drum；

Step 2: circuit preheating: being added using compressed air or inert gas system (4), preheating fan (12) and third electricity Hot device (10-3) to single test loop (16) preheat to improve loop temperature to be measured, thus avoid HTF occur solidification or because Excessive thermal stress generated and defective loop component to single test loop (16) for excessive temperature differentials；

Step 3: HTF is injected in circuit: injecting HTF into the pipeline (containing flexible hose) of connection and circuit, it is ensured that avoid HTF It solidifies, avoid the occurrence of residual air or inert gas bubble in thermal stress and circuit；

Step 4, focus tracking and tested: heat collector keeps track the sun and is focused, and heating HTF is to specified warm Degree, and single test loop (16) output data under each time is recorded, it is synchronized later with the DNI data under the corresponding time It compares and is calculated；

Step 5: circuit is cooling: before carrying out emptying HTF operation to single test loop (16) and detection system, passing through Cooling system makes HTF temperature cool down rapidly；

Step 6: emptying HTF: the HTF in emptying single test loop (16), flexible hose and connecting pipe completes one The test in circuit.

Preferably, between the step 3 and step 4 further include:

Common protection: heat collector is gone into a home, HTF in the loop is recycled and starts anti-condensation guarantor Shield；

Preferably, the step 1 specifically includes:

Step 11, one section of flexible hose one end: being connected the import of HTF injection pump by the primary condition before setting HTF is newly-increased, The other end immerses in HTF barrels；

Step 12, self-priming HTF injection pump is manually booted, until the HTF pumping in HTF barrels finishes or expansion drum reaches most It is big to allow HTF injection rate；

Step 13, the moisture in HTF is removed, HTF is available state at this time.

Preferably, the step 2 specifically includes:

Step 21, the primary condition that setting single test loop (16) preheats: before starting preheating mode, by the inclusion of soft The single test loop (16) is connected by the pipeline of property hose with detection system；

Step 22, control system (2) activates the preheating fan (12) and third electric heater (10-3), reaches temperature Setting value, exit step 2；

Preferably, the step 3 specifically includes:

Step 31, the preparation that HTF is injected into the flexible hose of connection and circuit is carried out, comprising: by a flexibility Hose is connected to the highest point exhaust outlet of single measure loop, and is connected with HTF barrels；；

Step 32, after preparation is in place, the highest point burp valve of single measure loop, the control of detection system are opened System (2) processed starts control and injects air or inert gas to expansion drum (7), pushes HTF slowly from low level to a high position full of collection Hot device circuit；

Step 33, after HTF flows out into HTF barrels by the highest point exhaust outlet of single measure loop, highest point is closed Burp valve.

Preferably, the step 6 specifically includes:

Step 61, connect gas cylinder on the outside of the highest point burp valve in circuit, discharge air or inert gas pressure with HTF is pushed to return in detection system from circuit, wherein the exits and entrances valve of detection system and single test loop (16) is arranged For circuit inlet and outlet while expansion drum is opened and being connected to, so that HTF enters expansion drum (7), and air or inert gas are final Into dissipation separation system (8)；

Step 62, after emptying HTF as far as possible, detection system exits and entrances valve and circuit exits and entrances valve are closed, then The HTF discharge outlet valve of single test loop (16) is opened to discharge the HTF of remaining into mobile medium collection tank；

Step 63, the HTF discharge outlet valve and highest point burp valve for closing circuit, disconnect the connection of gas cylinder.

Preferably, the detection method further includes so that detection system is in defocus in detection process follows or testing procedure In when encountering high wind, automatically into urgent protected mode, control heat collector and go to home.

Beneficial effects of the present invention: the loop performance detection system realizes the online of the single loop performance of groove type heat collector Multiple functions such as examinations and O&M stage such as debugging, on-line checking, mobile detection；Pass through TEU (Twenty-foot Equivalent Unit) formula and modular construction Design form is taken into account easy to remove and the advantages of convenient for large-scale production；It is respectively independent between subsystem, according to different test works Condition realizes slot type photo-thermal power station and integrally builds progress synchronous with the debugging examination of single circuit by control system cooperating It may；Using the flexible form of mobile detection, single loop fast evacuation heat-transfer working medium can be carried out, debugging cycle is greatly shortened, mentions High adjustment efficiency reduces testing cost；Complete sample data is formd to make when the subsequent archipelago joint debugging of supply station, whole joint debugging With reducing the uncertainty of single loop performance parameter, improve joint debugging efficiency.

For above and other objects of the present invention, feature and advantage can be clearer and more comprehensible, preferred embodiment is cited below particularly, And cooperate attached drawing, it is described in detail below.

Detailed description of the invention

Fig. 1 show solar parabolic through power generation system structure chart according to prior art.

Fig. 2 show slot type photo-thermal power station loop performance detection system structural principle according to an embodiment of the present invention.

Fig. 3 show slot type photo-thermal power station loop performance detection system three-dimensional structure diagram according to an embodiment of the present invention.

Fig. 4 show slot type photo-thermal power station loop performance detection system front view according to an embodiment of the present invention.

Fig. 5 show slot type photo-thermal power station loop performance detection system circulating pump H-Q curve according to an embodiment of the present invention Figure.

Wherein appended drawing reference respectively indicates:

1-HTF system；2- control system；3- sensing system；4- compressed air or inert gas system；5- circulating pump； 6- cooling system；7- expansion drum；8- dissipation separation system；9-HTF injection pump；The first electric heater of 10-1-；The second electricity of 10-2- Heater；10-3- third electric heater；11- cyclone separator；12- preheating fan；The weather station 13-；14- cabinet；15- pipe Road system；16- single test loop

Specific embodiment

Slot type photo-thermal power station loop performance detection system structural block diagram shown in Figure 2, for testing the heat in each circuit Performance, whole system are equipped with corresponding equipment and pipeline, while also contemplating mobility and accommodating the container of equipment pipe, Obtain convenient flexible detection characteristic.As shown in Figures 3 and 4, the present embodiment provides a kind of inspections of slot type photo-thermal power station loop performance Examining system, detection system are connect by the inclusion of the connecting pipe of hose with single test loop (16), and detection system is installed in In cabinet 14, cabinet 14 be may be mounted on TEU (Twenty-foot Equivalent Unit) frame vehicle or flat car, and can be dragged and be appointed by tractor Meaning movement.Detection system includes:

HTF (heat transfer fluid) subsystem 1；

Control system 2；And

Sensing system 3；

Wherein control system 2 sends control signal to HTF system 1 by control wiring, completes inspection to control HTF system 1 The circulation of HTF in examining system and in single test loop 16；

Sensing system 3 is separately positioned at expansion drum and single test loop 16, for collecting data to analyze State the performance in slot type photo-thermal power station single circuit.

In the present embodiment further include: nitrogen system 4, nitrogen system 4 include multiple nitrogen cylinders, the slot type photo-thermal power station circuit Multiple systems need to use nitrogen in performance detecting system, as expansion drum 7, cooling system 6, circuit pre-heating system, circulating pump 5 with And pipe-line system 15 maintains connected expansion drum 7, cooling system 6, circuit pre-heating system, circulation for sealing HTF system 1 Pump, the pressure of detection system pipeline and single test loop 16 and HTF is injected or emptied to single test loop 16.Each Nitrogen cylinder is equipped with an individual valve.Nitrogen cylinder is placed straight up on performance detecting system, and is placed in cabinet 14. In view of extreme low temperature exists, cabinet 14 is thermally shielded setting and increases by the first electric heater 10-1 to guarantee nitrogen bottle surface temperature Degree reaches minimum requirements.Cabinet 14 will nearby install hand chain type elevator, and nitrogen cylinder is promoted from ground onto detection system. This elevator will be on the pulley that be installed on the horizontal gird above detection system.Each gas cylinder is additionally provided with individual pressure Adjuster, and it is furnished with check-valves.It is expected that total gas consumption in one circuit of test is about 2000L, 200bar.

1 main body of HTF system includes: circulating pump 5；Expansion drum 7；And cooling system 6, second is also provided in the present embodiment Electric heater 10-2；Wherein: circulating pump 5 is for driving slot type photo-thermal power station loop performance detection system and single test loop 16 The circulation of middle HTF, circulating pump 5 are arranged to flow and pressure difference needed for providing in real time.According to project actual motion condition, this reality It applies example and selects commercially available conduction oil centrifugal pump, the H-Q curve of centrifugal pump 5 is as shown in Figure 5 in the present embodiment.Expansion drum 7 is for storing The HTF of test and extra swell increment is absorbed in HTF expanded by heating.The expansion drum of the present embodiment is 1 2m³, and adopt Expansion drum 7 is installed with horizontal mode, is connected after installation with compressed nitrogen system 4 to keep the pressure (4-13bar) of system.This reality It applies in example, expansion drum 7 is used with Therminol VP-1 conduction oil identical in single test loop 16 as HTF fluid.Certainly Also the common fluid form that other those skilled in the art can choose, or the tool according to solar energy thermal-power-generating factory be can choose Running body feature and the fluid form for requiring selection, within the scope of protection of this application.The running temperature of expansion drum 7 is 30- 400 DEG C, setting manhole, HTF oiling interface, N2 interface, emptying interface, spare interface, pressure instruction interface, pressure sensing connect Mouth, temperature sensing interface, relief valve interface and liquid level instruction/Sensing interface are all made of the side of flanged joint between each interface Formula.

Cooling system 6 uses air cooler in the present embodiment, is mainly used for collected by 16 heat collector of dissipation single test loop Heat.Achieve the purpose that adjust heat dissipation capacity so that outlet temperature reaches sets requirement by adjusting rotation speed of the fan.Certainly, in order to The cost of whole system is saved, cooling system 6 can also use water cooling equipment, by cooling water circulating cooling, by adjusting cold But water flow achievees the purpose that adjust heat dissipation capacity so that outlet temperature reaches sets requirement, only the volume of Performance Test System and Occupied area is bigger.

Following formula illustrates the characteristic of the corresponding HTF of air cooler used by this cooling system 6 at different temperatures:

Density (kg/m3)=- 0.9078*T (DEG C)+0.0004*T^2 (DEG C) -2.3671*10^-6*T^3 (DEG C)+ 1083.25

Thermal capacitance (kJ/kg*K)=0.0024*T (DEG C)+5.9591*10^-6*T^2 (DEG C) -2.9881*10^-8*T^3 (DEG C) +4.4172*10^-11*T^4(℃)+1.4982

Thermal conductivity (W/m*K)=- 8.1948*10^-5*T (DEG C) -1.9226*10^-7*T^2 (DEG C)+2.5034*10^- 11*T^3(℃)-7.2974*10^-15*T^4(℃)+0.1377

Kinematic viscosity

Enthalpy (kJ/kg)=1.5113*T (DEG C)+1.2941*10^-3*T^2 (DEG C)+1.2370*10^-7*T^3 (DEG C)- 0.6267

In the present embodiment, the quasi- air cooler selected of performance detecting system is 1, and design environment temperature is 0 DEG C -45 DEG C, Inlet temperature is 393 DEG C when operation, and outlet temperature is 293 DEG C.Set number of fans inside as 3.

Sensing system 3 includes multiple temperature sensors, pressure sensor, liquidometer and flowmeter, key temperatures sensing Device includes two, the inlet and outlet of single test loop 16 is separately positioned on, for measuring 16 out temperature of single test loop, root Whether according to inlet temperature at 0-450 degrees Celsius, whether outlet temperature judges the property of solar-thermal generating system at 200-600 degrees Celsius Can, pressure sensor is arranged in expansion drum and 16 import and export of single test loop, measures the pressure in expansion drum respectively And the pressure value of single test loop 16, whether worked normally as expansion drum and the finger of trough photovoltaic power generation system performance Mark；Liquidometer setting measures the liquid level of HTF in expansion drum in expansion top tank structure, when liquid level is higher than 7 total height 85% of expansion drum When, system alarm prompts oil extraction, and when liquid level is required lower than 7 minimum liquid level of expansion drum, HTF is replenished in time in system alarm prompt； The control valve exit of circulating pump downstream setting is arranged in flowmeter, and control system is existed by adjusting circulating pump and control valve control The flow of the HTF recycled in HTF system and single test loop 16, control the speed of detection and ensure detection process with it is actual The course of work degree of conformity of trough solar power generation system is high.According in the inlet temperature of single test loop 16 and circuit HTF flow, is calculated the photothermal conversion efficiency in circuit, and the calculation method of photothermal conversion efficiency includes:

Wherein, η --- collector efficiency,--- heat transfer oil flow, T_out--- circuit outlet temperature, T_in--- circuit Inlet temperature, DNI --- solar irradiance, A --- circuit mirror surface area.

Test macro is provided with dissipation separation system 8, and dissipation separation system 8 includes dissipation knockout drum, internal reservoir one Quantitative water, separates the HTF contained in the tail gas being discharged by 7 relief valve interface pipe of expansion drum, and dissipation separation system 8 is in When working condition, content is water, HTF and its degradation product, in the present embodiment, using 1 0.5m³Dissipation knockout drum.With Expansion drum is different, and dissipation knockout drum is directly communicated with external environment, does not need too high operating pressure, therefore operating pressure, interior Portion's design pressure and exterior design pressure are selected as atmospheric pressure.In dissipation knockout drum fluid be water, Therminol VP-1 and Its degradation product, the temperature range of operation are 0-85 DEG C.Similar to the design method of expansion drum, dissipation knockout drum retains manhole, swollen Swell interface, air interface, emptying interface, water injection interface, liquid level instruction interface, level sensing interface, temperature indicate interface, temperature Sensing interface and spare interface are spent, the mode of flanged joint is all made of between each interface.

HTF is injected into the performance detecting system by performance detecting system by thermal medium injection pump 9, is had with HTF It can be pumped for medium and with the characteristic of continuous operation, the present embodiment thermal medium injection pump 9 using the centrifugally lubrication of 1 continuous operation, And self-priming row pressure mode is used, admission pressure needs to be greater than 3bar, and running temperature is higher than 80 DEG C.

Performance detecting system realizes connection and performance detection system inside performance detecting system by complicated pipe-line system Connection between system and single test loop 16, pipe-line system can be divided into following four according to its function and by medium therein Molecular system:

HTF tube sub-systems are connect for HTF system 1 with detection system other parts；

Dissipation separate pipeline subsystem is connect for dissipating knockout drum 8 with detection system other parts；

Expansion drum tube sub-systems are connect for expansion drum 7 with detection system other parts, expansion drum tube sub-systems and The connection of the expansion drum 7 ensures leakproofness, it is preferred to use is welded to connect, such as selects flanged joint, it is necessary to according to wanting for ANSI It asks and selects 300 grades of flanges, stainless steel and graphite screw washer.These flange materials must adapted to carry out with tank body material fierce It connects, to guarantee to be subjected to if necessary；

Nitrogen pipeline subsystem is connect for nitrogen system 4 with detection system other parts；

Electric secondary heater 10-2, the second electric heating in the present embodiment is arranged using inserting mode in expansion drum 7 in system Device 10-2 uses thermal resistance form, and the resistance value of thermal resistance is related to HTF characteristic.Why second electric heater 10-2 is set, It is under low or zero solar irradiation intensity, since atmosphere heat dissipation or other factors can cause the constant temperature of conduction oil to reduce, directly Into system, certain point temperature reaches the adiabatic condensation temperature (12 DEG C) of HTF.Firmly to avoid the occurrence of that conduction oil solidifies, because Using the second electric heater 10-2 to avoid risk is solidified in this system, the second electric heater 10-2 is by HTF, in this implementation A fixed value is maintained in example for the temperature of conduction oil.

First, second and third electric heater 10-1,10-2,10-3 need to comprising necessary instrument to guarantee it corresponding It correctly being run in range of operation shown in tables of data, instrument includes temp probe as safety element, and first, second and Three electric heater 10-1,10-2,10-3 further include the heating group with control panel, and control panel allows to receive from temp probe Signal, temp probe is used to measure in expansion drum 7 and/or the temperature of 16 measurement point of single test loop, temp probe control heat The start and stop of resistance under normal operation, temp probe selects thermocouple in the present embodiment, and the signal equipped with 4-20mA exports, when The prior art common other temperature sensor forms, such as thermistor, platinum resistance etc. can also so be selected.First, second with And the generally horizontal arrangement of third electric heater 10-1,10-2,10-3, it is set by way of package winding or insertion electrically heated rod It sets, power 20kW, voltage 400V.

Single test loop pre-heating system is arranged in system, preheats to the vacant duct of single test loop 16, to keep away Exempt from before single test loop 16 carries out oiling, (environment temperature is, for example, 12 Celsius to the solidification of HTF caused by environment temperature is too low Degree), single test loop pre-heating system passes through return by the nitrogen that preheating fan 12 heats thermal resistance.

Further include the cyclone separator 11 being arranged in single test loop 16, which is set and is made During the nitrogen that thermal resistance heats under the drive of preheating fan 12 passes through return, HTF drop present in circuit with Air motion is removed before it reaches preheating fan 12 using the filter and separator that are arranged in cyclone separator 11, will The HTF being collected into collected by separator after by an automatic valve by HTF be transported to the dissipation separation system 8 or individually Accommodating container in.

The sheath material that setting stainless steel or the carbon steel with anti-corrosion function are formed outside thermal resistance.Preheating fan 12 uses Squirrel-cage, 400Vac three-phase, 50hz, winding use triangle star-like connection, and pre- thermoelectric perpetual motion machine 12 is by the fan by being connected on axis It is carried out with the air-flow for flowing to casing fin self cooling.The impeller and shell of preheating fan 12 are single stage type, but its inlet and outlet is drawn Flange side is led, to be connected to pipeline, impeller dynamic equilibrium when leaving the factory avoids vibrating excessive.

Anemobiagraph is added at the top of loop performance detection system, the single for avoiding unexpected strong wind from damaging in test is tested back Heat collector on road 16.

Slot type photo-thermal power station loop-around test system needs that weather station 13 is cooperated to use, and weather station 13 and slot type photo-thermal power station are returned Path test system is integrated or is separately provided by scene, environmental parameter needed for weather station 13 is used to record test macro operation, Mainly there are two purposes for the parameter: 1) determining the hot property of single test loop 16；2) the circuit safety under high irradiation high wind speed. The data information of each sensor of control system real-time collecting of weather station 13, and carry out necessary processing.Weather station has enough Memory, can will treated data temporary storage at least 48h, and have timestamp.

The composition of weather station 13 includes: in the present embodiment

A) airspeedometer

Cup type airspeedometer

Measurement range: 0.4m/s to 50m/s

Measure initial threshold < 0.5m/s

The linearity is high in opereating specification

Precision ± 0.5m/s

B) thermometer

Weather station should include temperature monitoring, and temperature sensor is answered:

Low-power consumption

It is easy to field calibration

Temperature measurement range: -40 DEG C 50 DEG C

Temperature measurement accuracy: ± 0.2 DEG C

Temperature-measuring element Pt 100

Sensor should be equipped with shield, prevent solar radiation and precipitation

C) solar irradiation meter

ISO9060 standard: level-one

Detector type: thermoelectric pile

Long-time stability 1%/year of <

Range: 0-2000W/m2

Spectral region (50% point): 285~2800nm

The visual field: 180 °

Without power supply

Double glazing dome

·IP65

The specifically used method detected using slot type photo-thermal power station loop performance detection system, comprising steps of

Step 1, HTF is newly-increased: new HTF is added into expansion drum, specifically includes:

Step 13, the moisture in HTF is removed, HTF is available state at this time；

Step 2: circuit preheating: single being tested using nitrogen system 4, preheating fan 12 and third electric heater 10-3 Circuit 16 is preheated to improve loop temperature to be measured, and its purpose is to avoid HTF from solidification occurring or because of excessive temperature differentials to list Test loop 16 generates excessive thermal stress and defective loop component；It specifically includes:

Step 21, the primary condition that setting single test loop 16 preheats: before starting preheating mode, by the inclusion of flexibility The single test loop 16 is connected by the pipeline of hose with detection system；

Step 22, control system 2 activates preheating fan 12 and third electric heater 10-3, so that temperature is reached setting value, moves back Step 2 out；

Step 3: circuit oiling: injecting HTF in the pipeline and circuit to connection containing flexible hose, it is ensured that avoid HTF solidifying Gu, avoid the occurrence of in thermal stress and circuit and remain nitrogen bubble；It specifically includes:

Step 32, after preparation is in place, the highest point burp valve of single measure loop, the control of detection system are opened System 2 processed starts control and injects nitrogen to expansion drum 7, and HTF is pushed slowly to be full of heat collector circuit from low level to a high position；

Step 33, after HTF flows out into HTF barrels by the highest point exhaust outlet of single measure loop, highest point is closed Burp valve；

Step 4, focus tracking and tested: heat collector keeps track the sun and is focused, and heating HTF is to specified warm Degree, and records 16 output data of single test loop under each time, synchronizes pair with the DNI data under the corresponding time later According to and calculated；

Step 5: circuit is cooling: before carrying out emptying HTF operation to single test loop 16 and detection system, by cold But system makes HTF temperature cool down rapidly；

Step 6: emptying HTF: the HTF in emptying single test loop 16, flexible hose and connecting pipe completes one and returns The test on road, specifically includes:

Step 61, connect nitrogen cylinder on the outside of the highest point burp valve in circuit, discharge nitrogen pressure with push HTF from Circuit returns in detection system, and wherein the exits and entrances valve of detection system and single test loop 16 is set as circuit inlet and outlet Expansion drum is opened and is connected to simultaneously, so that HTF enters expansion drum 7, and nitrogen eventually enters into dissipation separation system 8；

Step 62, after emptying HTF as far as possible, detection system exits and entrances valve and circuit exits and entrances valve are closed, then The HTF oil discharge outlet valve of single test loop 16 is opened to discharge the HTF of remaining into mobile medium collection tank；

Step 63, the HTF oil discharge outlet valve and highest point burp valve for closing circuit, disconnect the connection of gas cylinder.

In the present embodiment, common protection step is also added between step 3 and step 4, i.e., heat collector is gone into a peace All positon recycles HTF in the loop and starts anti-condensation protection；

In the present embodiment, detection method further includes so that detection system is in defocus in detection process follows or testing procedure In when encountering high wind, automatically into urgent protected mode, control heat collector and go to home.

In the present embodiment, detection method further include: the performance detecting system is in the common protected mode of the step 4 Under, control heat collector enters the position convenient for cleaning hence into cleaning model, high wind occurs in cleaning process, can also forbid collecting Hot device rotation, to guarantee the safety of cleaning, comprising: when wind speed is not high, detection device control heat collector enters cleaning positions, and Start anti-condensation protection (conduction oil is in recurrent state, and electric heater and electric tracing are opened or closed depending on concrete condition), heat collector Cleaning positions are maintained at, in a cleaning mode, the rotation operation of any pair of heat collector is all forbidden.Such as encounter communication failures, High wind or other emergency situations, operator must terminate manually cleaning model after confirmation cleaning personnel leave cleaning area.

It is more that the single loop detection system of the present embodiment realizes collection hot loop debugging, performance detection, energy-absorbing promotion and O&M A function realizes that Modular Structure Design form, respective independence between subsystem pass through control system according to different measurement conditions Cooperating, realizes slot type photo-thermal power station construction progress synchronous with debugging, and single loop quick oil-discharging increases and shortens debugging week The time efficiency of phase, the test of each single loop are high, at low cost, hand over completely at complete sample data for entire electric field parallel The database for paying joint debugging, reduces the fluctuation of loop performance parameter, improves joint debugging efficiency, mobile to detect more flexible shape Formula reduces testing cost.

Although the present invention is described by reference to specific illustrative embodiments, these embodiments are not will receive Restriction and only limited by accessory claim.It should be understood by those skilled in the art that can be without departing from of the invention Change and modification are able to carry out to the embodiment of the present invention in the case where protection scope and spirit.

Claims

1. a kind of slot type photo-thermal power station loop performance detection system, it is characterised in that: the detection system passes through pipeline and single Test loop (16) connection, single test loop (16) are isolated with other circuits, and the detection system is installed in cabinet (14) It is interior, and be moveable, comprising:

HTF system (1)；

Control system (2)；And

Sensing system (3)；

Wherein the control system (2) sends control signal to the HTF system (1) by control wiring, to control the HTF System (1) complete in the detection system and in the single test loop (16) HTF circulation；

The measuring device of the sensing system (3) is arranged on the pipeline in system, for measuring single test loop (16) Flow and out temperature, for analyzing the performance in the slot type photo-thermal power station single circuit, while to each in detection system Equipment is monitored, to keep detection system safe and reliable.

2. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that further include: pressure Contracting air or inert gas system (4), the compressed air or inert gas system (4) are connected to expansion drum (7), cooling system (6), circuit pre-heating system and detection system pipeline maintain connected expansion drum (7), cooling for sealing HTF system (1) The pressure and Xiang Dan of system (6), circuit pre-heating system, circulating pump (5), pipe-line system (15) and single test loop (16) The injection of test loop (16) or emptying HTF.

3. a kind of slot type photo-thermal power station loop performance detection system according to claim 2, it is characterised in that: the compression Air or inert gas system (4) include one or more gas cylinders, and each gas cylinder is equipped with an individual valve, and gas cylinder exists It places, and is placed among cabinet (14) or except cabinet (14) close to cabinet (14) straight up on the performance detecting system Place, each gas cylinder is additionally provided with individual pressure regulator, and is furnished with check-valves.

4. a kind of slot type photo-thermal power station loop performance detection system according to claim 3, it is characterised in that: the cabinet (14) gas cylinder heat-insulation and heat-preservation cabinet is set in, and the first electric heater (10-1) is set to add on the outside of the gas cylinder heat-insulation and heat-preservation cabinet Hot gas bottle heat-insulation and heat-preservation cabinet has horizontal horizontal to guarantee that the surface of gas cylinder temperature reaches minimum requirements above the cabinet (14) Beam, pulley is arranged on the horizontal gird, installs hand chain type elevator on pulley, and gas cylinder is promoted from ground to the performance In detection system.

5. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that: the HTF System (1) includes by the circulating pump (5) of piping connection, expansion drum (7), cooling system (6) and the second electric heater (10- 2)；Wherein:

Circulating pump (5) is used to drive following for HTF in slot type photo-thermal power station loop performance detection system and single test loop (16) Ring, the circulating pump (5) provide required flow and pressure difference in real time；

The expansion drum (7) is used to store the HTF of test and absorbs volume swell increment, expansion drum in HTF expanded by heating (7) it is horizontally mounted, and is connected with compressed air or inert gas system (4) to keep the pressure limit of system；

The cooling system (6) is that air cooler or water cooler pass through for the heat collected by single test loop (16) that dissipates The cold water flow of the rotation speed of the fan or the water cooler that adjust the air cooler achievees the purpose that adjust heat dissipation capacity so that outlet temperature Degree reaches sets requirement；

Second electric heater (10-2), is arranged on the pipeline (1) of the HTF system, the second electric heater (10- 2) thermal resistance form is used, the resistance value of the thermal resistance is related to HTF characteristic and heat dissipation of pipeline characteristic, the second electric heater (10-2) is used to for the temperature of HTF being maintained at a suitable interval, and second electric heater (10-2) includes instrument to guarantee It correctly runs in range of operation shown in corresponding data table, and the instrument includes temp probe as safety element, institute Stating the second electric heater (10-2) further includes the heating group with control panel, and the control panel allows to receive from temp probe Signal, the temp probe are used to measure the temperature of the interior measurement point of the HTF system (1), and the temp probe controls thermal resistance Start and stop under normal operation.

6. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that: the sensing Device system (3) includes temperature sensor, flowmeter, pressure sensor and liquidometer, and the temperature sensor includes at least two, Single test loop (16) inlet and outlet are separately positioned on, for measuring single test loop (16) out temperature；It is described The control valve exit of the circulating pump downstream setting is arranged in flowmeter, and control system is by adjusting circulating pump and control valve control The flow of the HTF recycled in HTF system and single test loop (16) is made, control detection speed simultaneously ensures detection process and reality The course of work of the trough solar power generation system on border meets, according to the out temperature of single test loop (16) and circuit The calorifics power in circuit is calculated in interior HTF flow；The part pressure sensor is arranged in the expansion drum and institute Single test loop (16) import and export is stated, measures the pressure of the pressure and single test loop (16) in expansion drum respectively Value, for judging monitoring system and single test loop (16) whether normal operation；The liquidometer is arranged on expansion drum, surveys The liquid level for measuring HTF in expansion drum, when liquid level is higher than expansion drum (7) total height 85%, system alarm prompt discharge HTF works as liquid When position is lower than expansion drum (7) minimum permissions liquid level, system alarm prompts that HTF is replenished in time.

7. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that further include: consumption Dissipate separation system (8), the dissipation separation system (8) includes dissipation knockout drum, a certain amount of water of internal reservoir, separate by The degradation product that the HTF and its Pintsch process contained in the tail gas of expansion drum (7) relief valve interface pipe discharge is generated, the dissipation When separation system (8) is in running order, content is water, HTF and the degradation product, the directly same external rings of dissipation knockout drum Border communicates.

8. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that further include HTF Injection pump (9), for HTF to be injected into the performance detecting system, the HTF injection pump (9) have using HTF as medium and It can be with the characteristic of continuous operation.

9. a kind of slot type photo-thermal power station loop performance detection system according to claim 2, it is characterised in that: the pipeline System (15) is connected for performance detecting system inside and the connection between performance detecting system and single test loop (16), Pipe-line system (15) can be divided into following four part subsystem according to its function and by medium therein:

Expansion drum tube sub-systems are connect for expansion drum (7) with detection system other parts, the expansion drum tube sub-systems It is tightly connected with the expansion drum (7)；

Gas pipeline subsystem is connect for compressed air or inert gas system (4) with detection system other parts.

10. a kind of slot type photo-thermal power station loop performance detection system according to claim 7, it is characterised in that further include by The single test loop pre-heating system of preheating fan (12), third electric heater (10-3) composition, for single test loop (16) vacant duct is preheated, to avoid before single test loop (16) carry out HTF injection, because pipe temperature is too low HTF is caused to solidify, the single test loop pre-heating system heats third electric heater (10-3) by preheating fan (12) Air or inert gas preheating achieved the purpose that by return.

11. a kind of slot type photo-thermal power station loop performance detection system according to claim 10, it is characterised in that further include The cyclone separator (11) being arranged in single test loop (16) is arranged the cyclone separator (11) and makes in pre- hot wind During machine (12) drives the air of lower thermal resistance heating or inert gas to pass through return, HTF liquid present in circuit Drop reaches preheating fan at it with air motion, using the filter and separator being arranged in the cyclone separator (11) (12) HTF is transported to described dissipate by an automatic valve after collecting the HTF being collected by separator and divided by removal before From in system (8) or individual accommodating container.

12. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that the circuit Performance detecting system is equipped with anemobiagraph, is mounted at the top or neighbouring certain altitude of test macro, measures wind speed and is passed to Control system (2) avoids the heat collector in strong wind damage single test loop (16) unexpected in test process.

13. a kind of slot type photo-thermal power station loop performance detection system according to claim 1, it is characterised in that the slot type Photo-thermal power station loop-around test system cooperates weather station (13) to use, and the weather station (13) includes at least: wind instrument, warm and humid Degree meter and solar irradiation meter, weather station (13) are separately provided by the loop-around test system integration or by scene, weather station (13) For environmental parameter needed for recording test macro operation, the environmental parameter is used to determine the calorifics of single test loop (16) Performance；And ensure the circuit safety under high irradiation high wind speed, the number of each sensor of control system real-time collecting of weather station (13) It is believed that breath, and carry out processing data information.

14. a kind of circuit property carried out using any slot type photo-thermal power station loop performance detection system of claim 1-13 Energy detection method, it is characterised in that comprising steps of

Step 1, HTF is newly-increased: new HTF being added into expansion drum；

Step 2: circuit preheating: using compressed air or inert gas system (4), preheating fan (12) and third electric heater (10-3) preheats to improve loop temperature to be measured single test loop (16), to avoid HTF that solidification or because temperature occurs The excessive defective loop component to single test loop (16) generation excessive thermal stress of difference；

Step 3: circuit inject HTF: to containing flexible hose connecting pipe and circuit in inject HTF, it is ensured that avoid HTF solidification, Avoid the occurrence of residual air or inert gas bubble in thermal stress and circuit；

Step 4, focus tracking and tested: heat collector keeps track the sun and is focused, and heats HTF to assigned temperature, and Single test loop (16) output data under each time is recorded, synchronizes control with the DNI data under the corresponding time later And it is calculated；

Step 6: emptying HTF: the HTF in emptying single test loop (16), flexible hose and connecting pipe completes a circuit Test.

15. according to the method for claim 14, it is characterised in that between the step 3 and step 4 further include:

Common protection: heat collector is gone into a home, HTF in the loop is recycled and starts anti-condensation protection.

16. according to the method for claim 14, it is characterised in that the step 1 specifically includes:

Step 11, the primary condition before setting HTF is newly-increased: another by the import of one section of flexible hose one end connection HTF injection pump End is immersed in HTF barrels；

Step 12, self-priming HTF injection pump is manually booted, until the HTF pumping in HTF barrels finishes or expansion drum reaches maximum and permits Perhaps HTF injection rate；

Step 13, the moisture in HTF is removed, HTF is available state at this time.

17. according to the method for claim 14, it is characterised in that the step 2 specifically includes:

Step 21, the primary condition that setting single test loop (16) preheats: before starting preheating mode, by the inclusion of flexible soft The single test loop (16) is connected by the pipeline of pipe with detection system；

Step 22, control system (2) activates the preheating fan (12) and third electric heater (10-3), and temperature is made to reach setting Value, exit step 2.

18. according to the method for claim 14, it is characterised in that the step 3 specifically includes:

Step 31, the preparation that HTF is injected into the flexible hose of connection and circuit is carried out, comprising: by a flexible hose It is connected to the highest point exhaust outlet of single measure loop, and is connected with HTF barrels；

Step 32, after preparation is in place, the highest point burp valve of single measure loop, the control system of detection system are opened System (2) starts control and injects air or inert gas to expansion drum (7), and HTF is pushed slowly to be full of heat collector from low level to a high position Circuit；

Step 33, after HTF flows out into HTF barrels by the highest point exhaust outlet of single measure loop, highest point exhaust is closed Mouth valve.

19. according to the method for claim 14, it is characterised in that the step 6 specifically includes:

Step 61, gas cylinder is connected on the outside of the highest point burp valve in circuit, discharges air or inert gas pressure to push HTF is returned in detection system from circuit, and wherein the exits and entrances valve of detection system and single test loop (16) is set as back Road is imported and exported while opening and being connected to expansion drum, so that HTF enters expansion drum (7), and air or inert gas eventually enter into Dissipation separation system (8)；

Step 62, after emptying HTF as far as possible, detection system exits and entrances valve and circuit exits and entrances valve is closed, is then opened The HTF discharge outlet valve of single test loop (16) is to discharge the HTF of remaining into mobile medium collection tank；

20. according to the method for claim 14, it is characterised in that the detection method further includes so that detection system is being examined Survey process be in defocus follow or testing procedure in when encountering high wind, automatically into urgent protected mode, control heat collector and go to Home.