CN202141067U

CN202141067U - Binary liquid fuel sample evaporation sample injection device capable of controlling pressure and temperature

Info

Publication number: CN202141067U
Application number: CN201120235222U
Authority: CN
Inventors: 姚春德; 徐广兰; 许汉君; 李旭聪
Original assignee: Tianjin University
Current assignee: Tianjin University
Priority date: 2011-07-06
Filing date: 2011-07-06
Publication date: 2012-02-08
Anticipated expiration: 2021-07-06

Abstract

The utility model discloses a binary liquid fuel sample evaporation sample injection device capable of controlling pressure and temperature. The device comprises two fuel evaporation tanks with the same structures, electric heating tapes are arranged on tank bodies and are connected with temperature controllers, liquid fuel input pipes are connected at lower end covers of the tanks and are connected with sample injection metering pumps, carrier gas input pipes and mixed steam-gas delivery pipes are arranged on upper end covers of the tank, one-way valves are arranged on the mixed steam-gas delivery pipes, two mixed steam-gas delivery pipes are connected on a mixed fuel steam-gas delivery pipe in parallel and is provided with a regulating valve, and phi 6 stainless steel balls are filled in the tanks. The binary liquid fuel sample evaporation sample injection device capable of controlling pressure and temperature has the advantages that the proportioning of the binary liquid fuel and the evaporation pressure are adjustable, the mixing is uniform, the flame burning is stable, a common sample injection metering pump without negative pressure is used, the device cost is low, the structure is compact, and the installation and overhauling are convenient, and the binary liquid fuel sample evaporation sample injection device can be applied to tests of other binary liquid gasifying body samples such as analysis, pyrolysis and the like.

Description

The binary liquid fuel sample evaporation sampling device of controllable pressure and temperature

Technical field

The utility model relates to the binary liquid fuel sample evaporation sampling device of a kind of controllable pressure and temperature, belongs to binary liquid vaporization mixed sampling device improvement technology.

Background technology

In order further to explore the Changing Pattern of material in the different fuel blending combustion flame, need carry out combustion test.The binary liquid carburretion sampling device that is adopted in the existing blending combustion test; Comprise a fuel sampling pump; The fuel sampling pump is connected with a carburretion jar through pipeline, carburretion jar peripheral hardware heat tape, and heat tape is connected with temperature controller.

There is following weak point in above-mentioned this single-fuel vaporization pot type binary liquid carburretion sampling device: unsuitable two kinds of bigger liquid fuel evaporations of molecular polarity difference.Because the difference of two kinds of liquid fuel molecular polarities is big; When the mutual blending of vast scale, can produce the phenomenon that to dissolve each other, under the situation that can not use emulsifying agent, even use supersound method to dissolve each other also incomplete; Can cause flame to stablize, test can't be carried out; In addition, because two kinds of different liquid fuel have different boiling, in the time will under uniform temp, vaporizing jointly, then can cause the vaporization degree varies, and then cause the instability of the fluctuation and the burning of pressure for vaporization; For prevent in the combustion furnace environment under low pressure (4kPa) to the vaporization sampling device swabbing action; Need to use sample introduction measuring pump with control positive and negative pressure function; This sample introduction measuring pump with control positive and negative pressure function costs an arm and a leg, so cause vaporization sampling device overall price high.

Summary of the invention

The purpose of the utility model is to provide the binary liquid fuel sample evaporation sampling device of a kind of controllable pressure and temperature; This binary liquid fuel sample evaporation sampling device; Gaseous mixture that produces and combustion flame are stable, be beneficial to burning is measured, simultaneously; This device also can be applicable to other binary liquid sample evaporation sample introduction occasion, and has good governor pressure and controlling temperature performance.

The utility model is realized through following technical proposals; The binary liquid fuel sample evaporation sampling device of a kind of controllable pressure and temperature; It is characterized in that; Comprise two carburretion jars that structure is identical, on the tank body of each carburretion jar, heat tape is set, heat tape is connected with temperature controller; The liquid fuel input pipe is set on the bottom end cover of carburretion jar, and the other end of liquid fuel input pipe is connected with the sample introduction measuring pump; Upper end cover at the carburretion jar is provided with carrier gas input pipe and mixed steam gas delivery line, and the port of export of carrier gas input pipe stretches into carburretion jar pot bottom, and two carrier gas input pipes of two carburretion jars are connected on the carrier gas air supply pipe through threeway; On the mixed steam gas delivery line of each carburretion jar check valve is set, two mixed steam gas delivery lines are connected to fuel combination vapour gas delivery line through three-way connection, on this fuel combination vapour gas delivery line, a choke valve are set; Fill Φ 6 stainless steel steel balls in the carburretion jar.

The advantage of the utility model is; After can vaporizing two kinds of liquid fuel samples that can't mix respectively according to different vapourizing temperatures, mixes again this binary liquid fuel sample evaporation sampling device; The proportioning of fuel, adjustable in pressure joint; Guaranteed the uniformity of mixing and the stability of flame combustion, what the sample introduction measuring pump used is common sample introduction measuring pump, thereby greatly reduces cost.In addition, this apparatus structure is compact, installs, overhauls very convenient.This device also can be used for tests such as other binary liquid gasification body sample analysis, pyrolysis.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Among the figure: 1 is that fuel combination vapour gas delivery line, 2 is that control valve, 3 is that three-way connection, 4 is that check valve, 5 is that carrier gas input pipe, 6 is that stainless steel steel ball, 7 is that carburretion jar, 8 is that heat tape, 9 is that liquid fuel input pipe, 10 is that sample introduction measuring pump, 11 is a temperature controller.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is specified as follows: carburretion jar 7 tank body external diameters are Φ 38mm, and height is 226mm, and two ends are CF35 internal-welded type flange, and interior dress Φ 6 stainless steel steel balls 6 are beneficial to heat transfer, vaporized liquid fuel.The carburretion tank is connected with end cap up and down through bolt; End cap is the CF35 blind flange up and down; Carburretion jar bottom end cover connects SS-3M0-R-6MBT perforation reducer union, and reducer union one end gos deep in the gasifying pot, and the other end connects Φ 3 sample introduction pipes 9; The sample introduction tube inlet links to each other with sample introduction measuring pump 10, and the sample introduction measuring pump is through regulating the blending ratio that flow changes two fuel.Through the SS-6M0-3 three-way connection two gasifying pot pipelines and gas-carrier pipeline are connected, this pipeline other end gos deep into gasifying pot 200mm.Mixed gas outlet Φ 6 pipelines are connected with the SS-CHS6MM-KZ-1 check valve, through three-way connection two gasifying pot pipelines are connected with SS-3NRS6MM-PK control valve 2, and fuel combination vapour gas feeds combustion furnace after control valve is regulated.

With the utility model device, with normal heptane/methyl alcohol mix burning, carrier gas is an argon gas, uses the vacuum ultraviolet ionized binding molecule beam sampler of synchrotron radiation mass-spectrometric technique to survey the material in the flame, the course of work is described below:

Open heat tape 8 power supplys, utilize to regulate temperature controller regulation voltage and electric current, and two gasifying pots are added heat respectively and remain on the vapourizing temperature of normal heptane and methyl alcohol; Regulate normal heptane and methanol fuel sample introduction flow and gas flow controller to testing required flow; Normal heptane and liquid methanol fuel feed two gasifying pots respectively, and the vaporization back is gone out its year by the argon gas that flows into the gasifying pot bottom; Blending forms binary fuel mixed steam gas at the three-way connection place through check valve for normal heptane/argon gas after the vaporization and methyl alcohol/argon gas, by feeding the combustion furnace burning after the control valve adjustments of gas pressure stability.

At normal heptane and ethanol,, make the liquid fuel that can not dissolve each other realize the gaseous state blending though also use this device in the experiment that the liquid fuel blending that methyl butyrate and methyl alcohol or other boiling points that can dissolve each other differ bigger is burnt.Pressure stability in the experiment does not have the situation that flows backwards, aspirates and disturb and takes place, flame stabilization, and the data that test obtains are genuine and believable, reached the purpose of test.

Claims

1. the binary liquid fuel sample evaporation sampling device of controllable pressure and temperature is characterized in that, comprises two carburretion jars that structure is identical, on the tank body of each carburretion jar, heat tape is set, and heat tape is connected with temperature controller; The liquid fuel input pipe is set on the bottom end cover of carburretion jar, and the other end of liquid fuel input pipe is connected with the sample introduction measuring pump; Upper end cover at the carburretion jar is provided with carrier gas input pipe and mixed steam gas delivery line, and the port of export of carrier gas input pipe stretches into carburretion jar pot bottom, and two carrier gas input pipes of two carburretion jars are connected on the carrier gas air supply pipe through threeway; On the mixed steam gas delivery line of each carburretion jar check valve is set, two mixed steam gas delivery lines are connected to fuel combination vapour gas delivery line through three-way connection, on this fuel combination vapour gas delivery line, a choke valve are set; Fill Φ 6 stainless steel steel balls in the carburretion jar.