CN108181425A - Fuel oil carbon distribution coking experiment porch - Google Patents
Fuel oil carbon distribution coking experiment porch Download PDFInfo
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- CN108181425A CN108181425A CN201711209615.5A CN201711209615A CN108181425A CN 108181425 A CN108181425 A CN 108181425A CN 201711209615 A CN201711209615 A CN 201711209615A CN 108181425 A CN108181425 A CN 108181425A
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- fuel oil
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- heating dish
- thermocouple
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
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Abstract
A kind of experiment porch of the fuel oil coking carbon distribution of fuel-oil power plant technical field, including syringe pump, glass syringe, long syringe needle, heating dish, experiment slice, thermocouple, heating wire, temperature controller, weight sensor, quality display, seal the components such as hood, the present invention obtains the plate temperature condition of experiment demand by electrically heated mode, fuel oil is dripped to slow speed on tablet, according to research background, flexibly setting experimental arrangement and experiment condition, such as temperature condition, time conditions, environment etc., obtain the tablet carbon distribution of fuel oil under given conditions.The present invention can control temperature condition in wide range, study the carbon distribution problem of all types fuel oil.Reasonable design of the present invention, it is simple in structure, suitable for the optimization design of fuel oil coking carbon distribution experiment porch.
Description
Technical field
The present invention relates to a kind of fuel oil coking of fuel-oil power plant technical field, the experiment porch of carbon distribution, especially one
Kind for simulating carbon distribution including gasoline, aviation kerosine, diesel oil, biodiesel etc. of fuel oil under different temperatures, coking process
Experiment porch.
Background technology
It is that current most of power plant obtains power to be burnt by fuel oil so as to which the chemical energy of fuel oil is converted to kinetic energy
Principal mode, internal combustion engine among these including fuel such as burning diesel oil, biodiesel, diesel oil emulsification, gasoline and burning boat
Aero-engine of empty kerosene etc..However fuel oil will be faced at a certain temperature with the power plant that fuel oil burns and drives
The problem of coking and carbon distribution.Fuel oil coking, carbon distribution not only result in the effective consumption of fuel oil, also result in serious power plant
The drastically decline of performance even failure.For example coking carbon distribution can block fuel injector to aviation kerosine at high temperature in aero-engine
Nozzle so as to reduce injection flow, influences the power output of engine.Fuel oil is certain in diesel engine and petrol engine fuel injector
At a temperature of oxidation also result in clogged with soot fuel injector, cause flow decline and spraying distortion；In addition, in cylinder
Carbon distribution also result in engine the decline of power performance, the reduction of efficiency of combustion and pollutant emission raising, while
The problems such as may result in early combustion and super detonation, damages engine.
At present for the research of fuel oil coking, carbon distribution, mainly for specific area, with the reality of respective field intermediate fuel oil
Use form is background, designs the carbon distribution research method of fuel oil.As being in aero-engine to heat the aviation flowed in pipeline
Kerosene is so as to obtain carbon distribution；Be research main method to carbon deposit in automobile engine it is on engine pedestal, in certain work
Long-play engine under the conditions of condition passes through the Changeement carbon on engine of engine performance and fuel injector carbon distribution.It is this
The main problem of method is：First, system complex, costliness, cumbersome, as a result poor repeatability causes confidence level to reduce；The
Two, testing expenses are high, generate the overlong time that carbon distribution needs, and cause fuel consumption, power consumption and human resources consumption big；The
Three, since meeting is affected by various factors in engine operation process, such as temperature, humidity, pipeline situation, engine condition
Deng influence factor complexity, it is impossible to accurately control experiment condition, cause to explain final experimental result unclear.
Invention content
In order to solve caused by existing fuel oil carbon distribution experimental method is of high cost, influence factor is complicated, result is unsharp to ask
Topic, the present invention propose a kind of new fuel oil carbon distribution experiment porch, can be larger suitable for the carbon distribution problem of all types fuel oil
In the range of control temperature condition.Its operation principle is：The plate temperature condition of experiment demand is obtained using electrically heated mode, it will
Fuel oil is dripped to slow speed on tablet, experimental arrangement and experiment condition is flexibly set, such as temperature condition, time conditions, ring
Border atmosphere etc. obtains the tablet carbon distribution of fuel oil under given conditions, then by weighing and various test methods, obtains carbon distribution
Physicochemical characteristics, so as to study the specific variation that fuel oil occurs during carbon distribution.
The present invention is achieved through the following technical solutions, the present invention include syringe pump, glass syringe, long syringe needle,
Experiment slice, heating dish, thermocouple, heating wire, temperature controller, weight sensor, quality display, sealing hood, glass
Injector arrangement is closely connect in the top of syringe pump, one end of long syringe needle by standard interface with glass syringe, long syringe needle
The other end adjust by being bent and be placed on proper height above experiment slice, heating dish top arrangement is fluted, experiment slice peace
It puts in the groove of heating dish, the measurement end of thermocouple is arranged in heating dish and positioned at the lower section of experiment slice, heating wire arrangement
In the lower section of heating dish, thermocouple, heating wire are connected by harness with temperature controller and power supply, weight sensor installation
In the bottom margin of heating dish, weight sensor is connected by harness with quality display, experiment slice, heating dish, thermocouple,
Heating wire, temperature controller, weight sensor are arranged in sealing hood.
Further, in the present invention, syringe pump is spiral pushing device, is realized by the velocity of rotation for controlling threaded post
The accurate control of fltting speed, syringe material are glass, and volume selects as needed, are coordinated with syringe pump, range of flow can
To reach 0.001 μ l-43.349ml/min；Long syringe needle be stainless steel, length 5-20cm, diameter 0.05mm-1mm.
Further, in the present invention, heating dish is rounded, and material is stainless steel, and experiment slice installation groove is rectangular；
Insulation processing is carried out between heating wire and heating dish.
Further, in the present invention, weight sensor is common symmetrical there are four and in spend, and weight sensor is with adding
Heat-insulated processing is done between hot plate.
Further, in the present invention, sealing hood is stainless steel and upper and lower double-layer structure, and centre is by close
Seal and sealing screw are sealed, and air inlet, gas outlet, syringe needle import, thermocouple import are provided on outer wall, top is provided with glass
Glass observation window.
In the present invention, in the present invention, experiment slice material is flexibly selected according to the difference of goal in research, experiment slice
It is square, size selects according to demand.Power of heating wire selects according to demand, and thermocouple selection suitable diameter and size pass through
Thermocouple channel in heating dish is extend under heating plate, and the temperature of experiment slice is controlled by heating wire, thermocouple and temperature
Device carries out feedback control.Weight sensor is connected by signal transmssion line with quality display, the quality that real-time display measures, and is led to
Cross the mass change that algebraic addition calculates heating dish, experiment slice and carbon distribution.
Compared with prior art, the present invention have the advantages that for：First, it can be to all types fuel oil in big temperature
Carbon distribution research is carried out in the range of degree；Second, experimental implementation is simple, and fuel consumption, power consumption and manpower consumption are small, experimental cost
It is extremely low；Third, can to the parameter in experimentation carry out one-parameter variation, research unitary variant such as nozzle temperature, fuel oil into
Point, the influence to fuel oil carbon distribution such as heating time, experiment condition is corresponding with experimental result clear, and experimental repeatability is good,
It is with a high credibility to the explanation of experimental result；4th, equipment is relatively easy, use easy to spread.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is heating dish vertical view；
Fig. 3 is the structure diagram of A-A sections in Fig. 2；
Fig. 4 is experiment slice structure chart；
Fig. 5 is the structural scheme of mechanism of B-B sections in Fig. 4；
Fig. 6 is seal closure schematical top view；
Fig. 7 is sealing hood sectional view；
Wherein：1st, syringe pump, 2, glass syringe, 3, long syringe needle, 4, experiment slice, 5, heating dish, 6, thermocouple, 7, electric heating
Silk, 8, temperature controller, 9, weight sensor, 10, quality display, 11, sealing hood.
Specific embodiment
It elaborates below in conjunction with the accompanying drawings to the embodiment of the present invention, the present embodiment is using technical solution of the present invention before
It carries, gives detailed embodiment and specific operating process, but protection scope of the present invention is not limited to following embodiments.
Embodiment
As shown in Figures 1 to 7, the present invention include syringe pump 1, glass syringe 2, long syringe needle 3, experiment slice 4, heating dish 5,
Thermocouple 6, heating wire 7, temperature controller 8, weight sensor 9, quality display 10, sealing hood 11, glass syringe 2
It is placed on syringe pump 1, long 3 one end of syringe needle is connect with syringe 2, and other end outlet is located at 4 top of experiment slice, and experiment slice 4 is pacified
It puts in the groove of heating dish 5,6 measurement end of thermocouple is placed in the bottom of heating dish 5, and heating wire 7 is located at 5 lower section of heating dish, leads to
Supply lines is crossed with temperature controller 8 and power supply to be connected, weight sensor 9 is located at the lower section of heating dish 5, by signal transmssion line with
Quality display 10 is connected, and whole system is placed in sealing hood 11.Syringe pump 1 diameter of thread 8mm, pitch of thread 1mm, spiral shell
Line rotational velocity range 0.01r/s-10r/s；Glass syringe 2 be standard 10ml syringes, diameter 10mm；Long syringe needle 3 is not
Rust steel material, long 100mm, aperture 0.1mm, middle bent, syringe needle are 10mm apart from 4 height of experiment slice；Experiment slice 4 is pros
Shape, long 30mm, wide 30mm, thick 2mm, centre open 0.8mm depths, 15mm long, 0.8mm wide thermocouple insertion groove；Heating dish is circle
Shape stainless steel plate is symmetrically opened above there are six 30mm long, 30mm wide, 2mm thick experiment slice mounting groove, and each mounting groove corresponds to
There are one thermocouple insertion groove, wide 1mm, deep 2mm, 3 edge height 10mm of heating dish；Thermocouple 6 uses K type thermocouples, length
200mm, diameter 0.8mm；Heating wire 7 uses nickel filament, diameter 1mm, total length 1000mm；Temperature controller 8 uses PID control
Mode；10 precision 0.00001g of weight sensor 9 and quality display；11 material of hood is sealed as stainless steel, internal diameter
300mm, total depth 200mm, wall thickness 2mm, seal closure top glass observation window long 100mm, wide 60mm, side air inlet openings
1/4in., gas outlet 1/4in.
In the present invention, experiment slice 4 is put into the slot of heating dish 5, thermocouple 6 passes through the slot in heating dish and experiment
Slot on piece 4 is inserted into center below experiment slice, after heating wire 7 is powered, by thermocouple 6 and temperature controller 7 to experiment
The temperature of piece 4 is controlled, after temperature reaches set temperature, the fuel oil in glass syringe 2 under the promotion of syringe pump 1,
It is slowly dripped on experiment slice 4 by syringe needle head, is tested according to the program for testing set, finally obtain such fuel oil one
Determine the carbon distribution and liquid residue at temperature, and then further physics and chemistry point can be carried out to carbon distribution and liquid residue
Analysis.
In the implementation process of the present invention, research object is used gasoline as, the temperature range of experiment slice 4 is set as
After temperature reaches setting value and stablizes 5min, the glass syringe 2 for drawing over 10ml gasoline is placed on for 130-185 degree
On syringe pump 1, under the drive of syringe pump 1, with the speed of 4ml/h, gasoline is dropped onto on experiment slice 4；After 2.5 hours,
The injection of 10ml fuel oils is completed, and syringe pump 1 is automatically stopped operation, continues to experiment slice temperature 1 hour, carbon distribution is made fully to generate,
The oxygen of different oxygen concentrations and the mixed gas of nitrogen can be constantly passed through by being sealed in hood 11 in experimentation, stringent to investigate
Influence of the concentration to gasoline carbon distribution；The mass-change curve of heating dish totality can be obtained after experiment, so as to be calculated
Under condition of different temperatures on experiment slice 4 residue quality.Experiment slice 4 before experiment will pass through polishing and cleaning process, and
It is impregnated 24 hours or more in normal heptane and removes impurity.After experiment, experiment slice 4 is steeped and 24 hours is dissolved in normal heptane with removal
Then soluble residues weigh experiment slice 4 again, the quality of carbon distribution can be calculated.Carbon distribution on experiment slice 4 can be into
The further physical chemistry test of row.
Claims (5)
1. a kind of fuel oil carbon distribution coking experiment porch, including syringe pump (1) and glass syringe (2), glass syringe (2) arrangement
On the top of syringe pump (1), which is characterized in that further include long syringe needle (3), experiment slice (4), heating dish (5), thermocouple (6), electricity
Heated filament (7), temperature controller (8), weight sensor (9), quality display (10), sealing hood (11), long syringe needle (3)
One end is closely connect by standard interface with glass syringe (2), and the other end of long syringe needle (3) is adjusted and is placed on by being bent
Proper height above experiment slice, heating dish (5) top arrangement is fluted, and experiment slice (4) is placed in the groove of heating dish (5),
The measurement end of thermocouple (6) is arranged in heating dish (5) and positioned at the lower section of experiment slice (4), and heating wire (7) is arranged in heating dish
(5) lower section, thermocouple (6), heating wire (7) are connected by harness with temperature controller (8) and power supply, weight sensor
(9) mounted on the bottom margin of heating dish (5), weight sensor (9) is connected by harness with quality display (10), experiment
Piece (4), heating dish (5), thermocouple (6), heating wire (7), temperature controller (8), weight sensor (9) are arranged in sealing row
In gas hood (11).
2. the fuel oil carbon distribution coking experiment porch told according to claim 1, it is characterised in that the syringe pump (1) pushes away for spiral
Into device；The long syringe needle (3) be stainless steel, length 5-20cm, diameter 0.05mm-1mm.
3. the fuel oil carbon distribution coking experiment porch told according to claim 2, it is characterised in that the heating dish (5) is rounded,
Material is stainless steel, and experiment slice (4) installation groove is rectangular；Insulation processing is carried out between heating wire (7) and heating dish (5).
4. the fuel oil carbon distribution coking experiment porch told according to claim 3, it is characterised in that the weight sensor (9) is shared
Four and in 90 degree it is symmetrical, do heat-insulated processing between weight sensor (9) and heating dish (5).
5. the fuel oil carbon distribution coking experiment porch told according to claim 4, it is characterised in that it is described sealing hood (11) be
Stainless steel and upper and lower double-layer structure, centre are sealed by sealing ring and sealing screw, air inlet are provided on outer wall, is gone out
Gas port, syringe needle import, thermocouple import, top is provided with glass window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209615.5A CN108181425A (en) | 2017-11-27 | 2017-11-27 | Fuel oil carbon distribution coking experiment porch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711209615.5A CN108181425A (en) | 2017-11-27 | 2017-11-27 | Fuel oil carbon distribution coking experiment porch |
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| Publication Number | Publication Date |
|---|---|
| CN108181425A true CN108181425A (en) | 2018-06-19 |
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ID=62545349
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711209615.5A Pending CN108181425A (en) | 2017-11-27 | 2017-11-27 | Fuel oil carbon distribution coking experiment porch |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190136767A1 (en) * | 2015-06-05 | 2019-05-09 | Rolls-Royce North America, Inc. | System and method for coking detection |
| CN111781297A (en) * | 2019-04-04 | 2020-10-16 | 应急管理部化学品登记中心 | Simple liquid flammability tester based on high-temperature silicon carbide rod and application thereof |
| CN113640337A (en) * | 2021-07-23 | 2021-11-12 | 哈尔滨工业大学 | Experimental device and experimental method for researching evaporation and coking of hydrocarbon fuel liquid drops on micro-scale hot wall surface |
| CN114324731A (en) * | 2021-11-24 | 2022-04-12 | 中国船舶重工集团公司第七一一研究所 | Experimental device and experimental method for testing coking and carbon deposition of lubricating oil |
| CN115406923A (en) * | 2022-09-06 | 2022-11-29 | 哈尔滨工业大学 | Dynamic visual observation experimental device for researching coking of hydrocarbon fuel liquid drops on high-temperature wall surface |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190136767A1 (en) * | 2015-06-05 | 2019-05-09 | Rolls-Royce North America, Inc. | System and method for coking detection |
| US10982598B2 (en) * | 2015-06-05 | 2021-04-20 | Rolls-Royce North American Technologies, Inc. | System and method for coking detection |
| CN111781297A (en) * | 2019-04-04 | 2020-10-16 | 应急管理部化学品登记中心 | Simple liquid flammability tester based on high-temperature silicon carbide rod and application thereof |
| CN111781297B (en) * | 2019-04-04 | 2022-09-16 | 中国石油化工股份有限公司 | Simple liquid flammability tester based on high-temperature silicon carbide rod and application thereof |
| CN113640337A (en) * | 2021-07-23 | 2021-11-12 | 哈尔滨工业大学 | Experimental device and experimental method for researching evaporation and coking of hydrocarbon fuel liquid drops on micro-scale hot wall surface |
| CN113640337B (en) * | 2021-07-23 | 2024-04-05 | 哈尔滨工业大学 | Experimental device and experimental method for researching evaporation and coking of hydrocarbon fuel droplets on micro-scale hot wall surface |
| CN114324731A (en) * | 2021-11-24 | 2022-04-12 | 中国船舶重工集团公司第七一一研究所 | Experimental device and experimental method for testing coking and carbon deposition of lubricating oil |
| CN114324731B (en) * | 2021-11-24 | 2024-05-24 | 中国船舶集团有限公司第七一一研究所 | Experimental device for testing coking and carbon deposition of lubricating oil and experimental method thereof |
| CN115406923A (en) * | 2022-09-06 | 2022-11-29 | 哈尔滨工业大学 | Dynamic visual observation experimental device for researching coking of hydrocarbon fuel liquid drops on high-temperature wall surface |
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Application publication date: 20180619 |