CN105352751B - A kind of biogas generating set heat efficiency and electrical efficiency measurement System and method for - Google Patents
A kind of biogas generating set heat efficiency and electrical efficiency measurement System and method for Download PDFInfo
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- CN105352751B CN105352751B CN201510936602.2A CN201510936602A CN105352751B CN 105352751 B CN105352751 B CN 105352751B CN 201510936602 A CN201510936602 A CN 201510936602A CN 105352751 B CN105352751 B CN 105352751B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The invention discloses a kind of biogas generating set heat efficiency and electrical efficiency measurement System and method fors,Biogas feed unit connects biogas generation device,Biogas is acquired,Filtering,Biogas feed unit connects engine by pipeline,Flow and composition measurement unit are provided on pipeline,The flow and ingredient of biomass are measured in real time,Engine connects generator,Generator drives load running,The power take-off of engine is in series with torque sensor,Speed probe measures the real-time rotating speed of engine,Data acquisition process unit acquires flow and composition measurement unit,Torque sensor,The output voltage and electric current of speed probe and generator,The present invention can measure the thermal efficiency of biomass fermentation motivation in real time,The efficiency of generator and the thermal efficiency of biogas cluster engine,Or the thermal efficiency in one section of run time,The thermal efficiency of generator efficiency and generating set.
Description
Technical field
The present invention relates to a kind of biogas generating set heat efficiency and electrical efficiency measurement System and method fors.
Background technology
Traditional fossil fuel is limited by service cost and problem of environmental pollution.In order to control the total of primary energy
Consumption figure and reduce discharge needs, widely popularize distributed biomass energy, become world energy sources development important directions it
One.Biogas is generated with fermentations such as poultry organic emissions or the controllable oxygen deprivation thermal cracking of agriculture and forestry waste generates thermal cracking biomass
Gas becomes main distributed energy resource system for fuel biogas generating set, and reasonable utilize of these resources can effectively drop
Low atmosphere and water pollution.
One important feature of biogas is exactly that its calorific value is low compared with the fossils class A fuel A such as natural gas, is sent out in biogas
In electric unit running process there is fluctuation, and different methane stations, the gasification of thermal cracking biogas in the ingredient of biogas and calorific value
For biogas caused by standing there are larger otherness, the difference of gas component to influence the burning velocity of engine, burning
Degree of perfection, and then influence the thermal efficiency of engine.The thermal efficiency, electrical efficiency when making biogas cluster engine actual motion
There are larger differences with the test result in product development process on testing stand.It can not be to the design of biogas engine block
Integrity carries out effectively evaluating, and objective assessment is can not achieve to its using energy source degree.
Invention content
The present invention is to solve the above-mentioned problems, it is proposed that a kind of biogas generating set heat efficiency and electrical efficiency measurement system
System and method, the present invention can measure the thermal efficiency of biomass fermentation motivation, the efficiency of generator and biogas engine in real time
The thermal efficiency of the thermal efficiency of the group or thermal efficiency in one section of run time, generator efficiency and generating set.
To achieve these goals, the present invention adopts the following technical scheme that：
A kind of biogas generating set heat efficiency and electrical efficiency measurement system, including biogas generating set, flow
And composition measurement unit, rotating speed torsion-testing unit and data acquisition process unit, wherein, biogas generating set includes life
Substance gas feed unit, engine and generator；
The biogas feed unit connects biogas generation device, and biogas is acquired, is filtered, biology
Matter gas feed unit connects engine by pipeline, is provided with flow and composition measurement unit on pipeline, measures biomass in real time
The flow and ingredient of gas, engine connection generator, generator drive load running, the power take-off series connection of the engine
There is torque sensor, speed probe measures the real-time rotating speed of engine, and data acquisition process unit acquisition flow and ingredient are surveyed
Unit, torque sensor and the measurement data of speed probe and the output voltage of generator and electric current are measured, hair is calculated
The electrical efficiency of the power of motivation, the thermal efficiency and biogas generating set.
The data acquisition process unit utilizes acquired biogas flow and biogas ingredient and according to difference
The calorific value calculation of ingredient goes out to input the heat of biogas generating set, is started using what the speed probe of engine was acquired
The engine output torque that machine rotating speed and torque sensor are acquired calculates the power of engine, by the power for calculating engine
The thermal efficiency of engine is worth to the ratio of input heat, while utilizes the defeated of generator output voltage and Current calculation generator
Go out electrical power, the efficiency of generator is obtained by the power for calculating electromotive power output and engine, by calculating electromotive power output
The electrical efficiency of biogas generating set is worth to the ratio of input heat.
The biogas feed unit, including biogas storage tank, biological air filter and biogas dehydrater,
In, described biogas storage tank one end connects biogas generation device, and the other end connects biological air filter, mistake by pipeline
Particle therein is filtered, biological air filter by pipeline after pipeline connection biogas dehydrater by connecting engine.
Mixer is equipped between the engine and biogas feed unit, biogas is mixed with air.
The biogas generation device is methane-generating pit or biogas producer.
The generator is connected with load, and connects series electrical flow table in circuit, and shunt voltage table measures the defeated of generator
Go out electric current and voltage.
Measuring method based on above system, includes the following steps：Data acquisition process unit acquires biogas flow
With biogas ingredient, by the actual calorific value of the calorific value calculation biogas of gas with various stored in system, and stream is combined
Amount calculates the heat for being input to biogas generating set；The engine speed that is acquired using the speed probe of engine and
The engine output torque that torque sensor is acquired calculates the power of engine；By calculating the power of engine and input heat
The ratio of amount is worth to the thermal efficiency of engine, using generator output voltage and the electromotive power output of Current calculation generator, leads to
Cross calculate electromotive power output and engine output obtain the efficiency of generator, by calculating electromotive power output and input heat
The ratio of amount is worth to the electrical efficiency of biogas generating set.
Further, data acquisition process unit is to the thermal efficiency, generator efficiency and the electrical efficiency in setting run time
Integrating solves the average efficiency in this section of run time.
Beneficial effects of the present invention are：
(1) present invention can carry out effectively evaluating to the design integrity of biogas engine block, to its energy
Producing level can realize objective assessment；
(2) thermal efficiency of biomass fermentation motivation, the efficiency of generator and biogas cluster engine can be measured in real time
The thermal efficiency of the thermal efficiency or thermal efficiency in one section of run time, generator efficiency and generating set.
(3) according to the real-time thermal efficiency, generator efficiency, the thermal efficiency of biogas cluster engine and at one section tested
In the average thermal efficiency, generator efficiency and generating set the thermal efficiency, optimize the method for operation of biogas generator, carry
High energy source utilization rate and guides the optimization design direction of generating set.
Description of the drawings
Fig. 1 is the biogas generating set heat efficiency of the present invention and electrical efficiency measurement device operating diagram；
Fig. 2 is the biogas generating set heat efficiency of the present invention and the logical flow chart of electrical efficiency measurement operating method；
Wherein, 101 hydrolock biogas storage tank, 102 biological air filters, 103 biogas pipelines, 104 biomass
Gas dehydrater, 105 flowmeters, 106 biogas constituent measuring instruments, 107 mixers, 108 speed probes, 109 biogas
Engine, 110 torque sensors, 111 generators, 112 voltmeters, 113 ammeters, 114 loads, 115 data acquisition process systems
System.
Specific embodiment：
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, biogas generating set heat efficiency and electrical efficiency measurement device include：It is supplied including biogas
Device, biogas flow and component measuring device, biogas engine, biogas generator, rotating speed and torque measurement
Device, data acquisition processing system.Function is the effect of the thermal efficiency of survey calculation biogas engine, biogas generator
The thermal efficiency, the biology of the thermal efficiency or the biogas engine in one section of run time of rate and biogas cluster engine
The efficiency of matter gas generator and the thermal efficiency of biogas generating set.The function of wherein biogas feedway is for biology
The function of matter gas engine offer biogas, biogas flow and component measuring device is the real-time stream for measuring biogas
The function of amount and ingredient, rotating speed and torque-measuring apparatus is the output torque of the rotating speed and flywheel end that measure engine, and data are adopted
The function of collection processing system is to calculate the thermal efficiency, generator efficiency and electrical efficiency according to the data of acquisition.
The course of work of the biogas generating set heat efficiency and electrical efficiency measurement device is given birth to for methane-generating pit or thermal cracking
The biogas generated in substance gas producer is stored in hydrolock biogas storage tank 101, and biogas engine 109 starts
When, biogas enters biogas dehydrater 104 after biological air filter 102 filters out particle therein etc., removes it
Middle excessive moisture prevents in biogas water content is excessively high to make that engine ignition is difficult, burning velocity is slow, into mixer 107
In be sufficiently mixed with air after, 109 combustion heat release of supply biogas engine externally does work.It is gone here and there in biogas pipeline
Join flowmeter 105, and be connected to flow and ingredient that biogas constituent measuring instrument 106 measures biogas in real time.Engine
Power take-off series connection torque sensor 110, burning is connected to generator 111,114 connection of generator 111 and load, circuit
Middle series electrical flow table 113, the output current and voltage of shunt voltage table 112, in real time measurement generator 111.Data acquisition process
System 115 acquires parameters and calculates the efficiency and biomass of the thermal efficiency of biogas engine, biogas generator
The electrical efficiency of gas generating set.
The present invention provides the measuring methods for biogas generating set heat efficiency and electrical efficiency.Below with reference to figure
2 are described in detail.
In step sl, biogas generating set is started first, it is made to be run in a certain stable conditions；Then in step
Data collecting system acquisition biogas flow and biogas ingredient in S2；In step S3, data processing system passes through system
The actual calorific value of the calorific value calculation biogas of the gas with various of middle storage, and it is input to biogas power generation with reference to flow rate calculation
The heat of unit；In step S4, engine speed and the torque sensor institute acquired described in the speed probe of engine is utilized
The engine output torque of acquisition calculates the power of engine；In step S5, by calculating the power of engine and input heat
Ratio be worth to the thermal efficiency of biogas engine.In step S6, generator output voltage and Current calculation generator are utilized
Electromotive power output；In step S7, the efficiency of generator is obtained by the power for calculating electromotive power output and engine, passes through meter
The ratio of calculation electromotive power output and input heat is worth to the electrical efficiency of biogas generating set.
Data processing system can also solve the thermal efficiency, generator efficiency and the electrical efficiency integrating in setting run time
Average efficiency in this section of run time.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (5)
1. a kind of biogas generating set heat efficiency and electrical efficiency measurement system, it is characterized in that：Including biogas generator
Group, flow and composition measurement unit and data acquisition process unit, wherein, biogas generating set is supplied including biogas
Unit, engine and generator；
The biogas feed unit connects biogas generation device, and biogas is acquired, is filtered, biogas
Feed unit connects engine by pipeline, and flow and composition measurement unit are provided on pipeline, measures biogas in real time
Flow and ingredient are additionally provided with mixer between engine and biogas feed unit, and biogas is mixed with air,
Engine connects generator, and generator drives load running, and the power take-off of the engine is in series with torque sensor, turns
The real-time rotating speed of fast sensor measurement engine, data acquisition process unit acquisition flow and composition measurement unit, torque sensing
Power, the thermal effect of engine is calculated in the output voltage and electric current of the measurement data and generator of device and speed probe
The electrical efficiency of rate and biogas generating set；
The biogas feed unit, including biogas storage tank, biological air filter and biogas dehydrater, wherein,
Described biogas storage tank one end connects biogas generation device, and the other end connects biological air filter, filtering by pipeline
Particle therein, biological air filter by pipeline after pipeline connection biogas dehydrater by connecting engine；
The data acquisition process unit utilizes acquired biogas flow and biogas ingredient and according to heterogeneity
Calorific value calculation go out to input the heat of biogas generating set, turned using the engine that the speed probe of engine is acquired
Speed and the engine output torque that is acquired of torque sensor calculate the power of engine, by calculating the power of engine and defeated
The ratio for entering heat is worth to the thermal efficiency of engine, while utilize the output electricity of generator output voltage and Current calculation generator
Power is worth to the efficiency of generator by calculating the ratio of power of electromotive power output and engine, and electric work is exported by calculating
The ratio of rate and input heat is worth to the electrical efficiency of biogas generating set.
2. a kind of biogas generating set heat efficiency as described in claim 1 and electrical efficiency measurement system, it is characterized in that：Institute
Biogas generation device is stated as methane-generating pit or biogas producer.
3. a kind of biogas generating set heat efficiency as described in claim 1 and electrical efficiency measurement system, it is characterized in that：Institute
It states generator to connect with load, and connect series electrical flow table in circuit, shunt voltage table, measures the output current and electricity of generator
Pressure.
4. based on the measuring method of the system as described in any in claim 1-3, it is characterized in that：Include the following steps：Data
Acquisition process unit acquires biogas flow and biogas ingredient, by the calorific value calculation of the gas with various stored in system
The actual calorific value of biogas, and combine the heat that flow rate calculation is input to biogas generating set；Utilize turning for engine
The engine output torque that the engine speed and torque sensor that fast sensor is acquired are acquired calculates the power of engine；
The thermal efficiency of engine is worth to by the ratio of power and input heat for calculating engine, utilizes generator output voltage and electricity
The electromotive power output of stream calculation generator is worth to the effect of generator by calculating the ratio of power of electromotive power output and engine
Rate is worth to the electrical efficiency of biogas generating set by calculating electromotive power output and inputting the ratio of heat.
5. measuring method as claimed in claim 4, it is characterized in that：Data acquisition process unit is to the warm in setting run time
Efficiency, generator efficiency and electrical efficiency integrating solve the average efficiency in this section of run time.
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| 《生物质气化发电机组中内燃机的运行特性分析》;任永志 等;《可再生能源》;20060228(第2期);第19-22页 * |
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