CN212206992U

CN212206992U - OCEC analysis device

Info

Publication number: CN212206992U
Application number: CN201922477073.0U
Authority: CN
Inventors: 陈晗炜; 华道柱; 杨明; 叶蓁蓁; 吴鹏建
Original assignee: Concentrating Technology Hangzhou Co ltd
Current assignee: Concentrating Technology Hangzhou Co ltd; Focused Photonics Hangzhou Inc
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-12-22
Anticipated expiration: 2029-12-31

Abstract

The utility model provides an OCEC analytical equipment, OCEC analytical equipment includes light source, detector and filter membrane; a housing having a recess or through hole; a conduit adapted to receive the filter membrane therein, the conduit being disposed within the recess or through-hole and carried thereby; a fixture, the fixture filled between the groove and the pipe is solidified. The utility model has the advantages of detect accurate, good reliability.

Description

OCEC analysis device

Technical Field

The utility model relates to a carbon analysis, in particular to OCEC analytical equipment.

Background

The OCEC on-line analyzer separates OC (Organic Carbon) and EC (Elemental Carbon) by thermal decomposition-optical transmission method and thermal decomposition-optical reflection method. During the heating stage of the heating furnace, the phenomenon of laser value decrease (pointed by the arrow) can occur, which causes the cutting point to be inaccurate, thereby affecting the ratio of OC to EC, as shown in FIG. 1.

In order to solve the above technical problems, the prior art adopts a solution that:

and correcting the laser by adopting a numerical correction method, and carrying out laser compensation correction aiming at the temperature effect of the laser intensity. When a blank sample is analyzed, the laser intensity I0 penetrating through the filter membrane at the initial analysis (when the blank sample is not heated) is firstly recorded, then the laser intensity I and the surface temperature T of the filter membrane during the heating analysis are recorded, and the laser intensity change delta I (I-I0) and T are fitted to obtain the relation delta I (T) of the delta I and the T. When the sample was actually analyzed, Δ i (t) was subtracted from the measured laser intensity to obtain the laser intensity variation caused only by OC charring and EC oxidation, and the calibration results are shown in fig. 2. The disadvantages of this correction method are:

1. due to the uncertainty of the heating furnace after temperature rise and film sampling, the correction method cannot accurately reflect the actual laser condition, so that the error of OCEC segmentation is caused;

2. in the actual use process, the sampling membrane needs to be replaced regularly, the correction curve cannot be suitable for new working conditions every time, the correction value needs to be tested again, and the process is complicated and unreliable;

3. the laser descending phenomenon of different heating furnaces is different, and a proper relation between delta I and T cannot be ensured.

SUMMERY OF THE UTILITY MODEL

For solving not enough among the above-mentioned prior art scheme, the utility model provides a need not OCEC analytical equipment that light intensity rectifies has reached the utility model purpose that detects accuracy, suitability are good, the good reliability.

The utility model aims at realizing through the following technical scheme:

an OCEC analysis device comprising a light source, a detector and a filter membrane; the OCEC analysis apparatus further includes:

a housing having a recess or through hole;

a conduit adapted to receive the filter membrane therein, the conduit being disposed within the recess or through-hole and carried thereby;

a fixture, the fixture filled between the groove and the pipe is solidified.

Compared with the prior art, the utility model discloses the beneficial effect who has does:

1. the detection is accurate;

the technical scheme of normal temperature fixing-high temperature curing is creatively provided, the problem of laser intensity reduction caused by heating in the working process is effectively prevented, and the detection accuracy is further improved;

2. the applicability is good;

the technical scheme of normal temperature fixing and high temperature curing is suitable for each OCEC analysis device;

3. the reliability is good;

after one-time fixation, the pipeline is firmly fixed, and the long-term and stable work of the OCEC analysis device is ensured;

4. the process is simple;

the groove or the through hole is filled with soft fixed objects, the pipeline is compressed and high-temperature curing is carried out, and the construction is convenient.

Drawings

The disclosure of the present invention will become more readily understood with reference to the accompanying drawings. As is readily understood by those skilled in the art: these drawings are only intended to illustrate the technical solution of the present invention and are not intended to limit the scope of the present invention. In the figure:

FIG. 1 is a schematic illustration of laser descent according to the prior art;

FIG. 2 is a graph showing the results of a calibration according to the prior art

Fig. 3 is a schematic top view of an OCEC analysis apparatus according to an embodiment of the present invention;

fig. 4 is another schematic top view of an OCEC analysis apparatus according to an embodiment of the present invention;

FIG. 5 is a view A-A of FIG. 4;

fig. 6 is an effect diagram achieved by the OCEC analysis apparatus according to the embodiment of the present invention.

Detailed Description

Fig. 3-6 and the following description depict alternative embodiments of the invention to teach those skilled in the art how to make and reproduce the invention. For the purpose of teaching the present invention, some conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations or substitutions from these embodiments that will be within the scope of the invention. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the invention. Accordingly, the present invention is not limited to the following alternative embodiments, but is only limited by the claims and their equivalents.

Example 1:

fig. 3-5 schematically show a schematic structural diagram of an OCEC analysis apparatus according to an embodiment of the present invention, and as shown in fig. 3-5, the OCEC analysis apparatus includes:

the light source 31, the detector 32 and the particulate matter filter membrane, which are the prior art in the field, and the specific structure and working mode are not described herein;

a housing 11, said housing 11 having a recess or through hole 12;

a duct 21, said duct 21 being adapted to receive said filter membrane therein, said duct 21 being disposed within said recess or through hole 12 and being carried, i.e. supported at said recess or through hole, the other part being suspended;

the fixing 81, the fixing 81 filled between the groove 12 and the pipe 21 is solidified, so that the pipe 21 supported by the housing 11 is ensured not to shake, the deformation amount is small even at high temperature, and the stability of the light intensity of the light source is ensured.

In order to realize that the fixture is soft at low temperature so as to fix the pipeline and is solidified at high temperature so as to stabilize the pipeline, further, the fixture is at least one of argil, clay, gypsum or high-temperature glue.

In order to fix the pipe and to arrange the pipe in the closed space formed in the housing for rapid heating, further, the housing includes:

the upper end of the first shell is provided with a groove;

the bottom end of the second shell is provided with a groove corresponding to the groove, and the pipeline is clamped between the groove of the first shell and the groove of the second shell; the first housing and the second housing form a closed space.

In order to prevent the pipe from being crushed and broken in the up-down direction, further, the fixture is disposed only in the groove of the first housing.

In order to provide the pipeline with a detection light path, a purging channel, a back-flushing channel and a catalytic reaction channel, the pipeline is further provided with a light emitting end, a light receiving end, a gas inlet and a gas outlet end, wherein the light emitting end and the light receiving end are arranged oppositely, and gas entering the pipeline through the gas inlet purges the filter membrane and then is discharged from the gas outlet end.

In order to form a back-blowing channel, the gas inlet comprises a first inlet and a second inlet, and the gas entering through the first inlet purges the filter membrane and then flows in a bent mode; the gas entering through the second inlet purges the filter membrane and then flows linearly.

In order to facilitate purging, further, the first inlet is disposed at the light emitting end, the second inlet is disposed at the back blowing end 22 of the pipeline, and the back blowing end and the gas outlet end 23 are disposed opposite to each other.

In order to form a closed space for heating and keeping warm the pipeline, further, the shell is in a shape of a 'day', and the upper end of the wall surrounding the cavity is provided with the groove or the through hole.

The utility model discloses OCEC analytical equipment's manufacturing approach:

providing a shell, wherein the shell is provided with a groove or a through hole;

filling a fixture at the bottom of the groove or the through hole;

pressing the pipeline in the groove or the through hole, and filling a soft fixture between the pipeline and the shell;

heating the fixture and curing the fixture.

For curing the fixture, further, the heating temperature is 200-850 ℃.

Example 2:

according to the utility model discloses OCEC analytical equipment's of embodiment 1 application example.

In this application example, as shown in fig. 3 to 5, the light source 31 employs a laser, and the detector 32 employs a photosensor; the quartz pipeline 21 is in a cross shape, wherein a light emitting end and a light receiving end are oppositely arranged, and a back flushing end 22 and a gas output end 23 are oppositely arranged; the inner diameter between the light emitting end and the light receiving end in the pipeline 21 is larger, the particulate matter filter membrane is arranged at the cross part, the inner diameter between the back flushing end 22 and the gas output end 23 is smaller, and the light emitting end is provided with a gas inlet for introducing helium or a mixture of the helium and the oxygen; the laser 31 is fixed at the light emitting end, the light receiving end is closed, and the detector 32 is fixed at the light receiving end; the catalyst is arranged in a pipeline between the filter membrane and the gas output end; the back blowing end is suitable for introducing back blowing air;

the first shell 11 is made of refractory bricks and is in a shape of a Chinese character 'ri', two cavities are formed, and the upper end of the wall forming the cavities is provided with grooves, 5 grooves in the embodiment; the second shell is made of refractory bricks and is in a shape of a Chinese character 'ri', two cavities are formed, the lower end of the wall forming the cavities is provided with grooves corresponding to the grooves of the first shell, and the pipeline is clamped in the upper and lower grooves; the heating belt is wound outside a pipeline between the laser and the detector and outside a pipeline between the filter membrane and the gas output end and is positioned in a cavity formed by the first shell and the second shell, and heat insulation cotton is filled in the cavity to prevent heat loss;

the fixing part 81 is made of pottery clay which is soft at normal temperature and is only arranged in the 5 grooves 12 of the first shell 11, the fixing part is not arranged in the groove of the second shell, the pipeline 21 is arranged in the groove 12 and is pressed, and after the position of the pipeline 21 is fixed, the pottery clay in the groove 12 is sintered to be solidified in a high-temperature environment.

The OCEC analyzer of the present application example is manufactured by:

providing the first shell, wherein the first shell is provided with 5 grooves;

soft pottery clay is filled at the bottom of the groove or the through hole;

the pipeline in the groove or the through hole is pressed, and the soft fixture is filled between the pipeline and the shell, so that the pipeline is ensured not to shake and is in a horizontal state;

covering the second shell on the first shell, and clamping the pipeline in the grooves of the first shell and the second shell;

and starting a heating belt, heating the fixture at 850 ℃ for 24 hours, and curing the fixture.

In the OCEC analysis apparatus obtained in this application example, the laser spectrum test result is shown in fig. 6, and the laser intensity decrease range (where the arrow points) is significantly improved compared with the test result in fig. 1.

Example 3:

according to the utility model discloses OCEC analytical equipment's of embodiment 1 application example is different from embodiment 2:

1. gypsum is used as a fixture, and at normal temperature, the viscous gypsum is filled between the pipeline and the groove of the first shell; curing the viscous gypsum at high temperature;

2. the pipeline is in a T shape, the first inlet and the second inlet are shared, a special back-blowing end is not arranged, and the light emitting end and the light receiving end are still arranged oppositely.

Example 4:

according to the utility model discloses OCEC analytical equipment of embodiment 1 reaches application example, different with embodiment 2 is:

1. the high-temperature glue is used as a fixture and filled between the pipeline and the groove of the first shell at normal temperature; curing the high-temperature glue at high temperature;

2. the first shell is provided with 1 through hole and 4 grooves, and the lower end of the second shell is planar and is not provided with any groove;

3. the back blowing end of the pipeline is inserted into the through hole, the loaded part of the pipeline is completely positioned in the groove, and the upper end face of the pipeline is not higher than the upper end face of the first shell.

The above embodiments are only given by way of example for the use of clay, plaster and high temperature glue as the fixing means, but other substances, such as clay, are of course also possible.

Claims

An OCEC analysis apparatus comprising a light source, a detector and a filter membrane; the method is characterized in that: the OCEC analysis apparatus further includes:

a housing having a recess or through hole;

a conduit adapted to receive the filter membrane therein, the conduit being disposed within the recess or through-hole and carried thereby;

a fixture, the fixture filled between the groove and the pipe is solidified.
2. The OCEC analysis apparatus according to claim 1, wherein: the fixture is at least one of pottery clay, gypsum or high-temperature glue.
3. The OCEC analysis apparatus according to claim 1, wherein: the housing includes:

the upper end of the first shell is provided with a groove;

the bottom end of the second shell is provided with a groove corresponding to the groove, and the pipeline is clamped between the groove of the first shell and the groove of the second shell; the first housing and the second housing form a closed space.
4. The OCEC analysis apparatus according to claim 3, wherein: the fixture is disposed only within the recess of the first housing.
5. The OCEC analysis apparatus according to claim 1, wherein: the pipeline is provided with a light emitting end, a light receiving end, a gas inlet and a gas outlet end, the light emitting end and the light receiving end are arranged oppositely, and gas entering the pipeline through the gas inlet sweeps the filter membrane and is then discharged from the gas outlet end.
6. The OCEC analysis apparatus according to claim 5, wherein: the gas inlet comprises a first inlet and a second inlet, and gas entering through the first inlet purges the filter membrane and then flows in a bent mode; the gas entering through the second inlet purges the filter membrane and then flows linearly.
7. The OCEC analysis apparatus according to claim 6, wherein: the first inlet is arranged at the light emitting end, the second inlet is arranged at the back blowing end of the pipeline, and the back blowing end and the gas outlet end are arranged in an opposite mode.
8. The OCEC analysis apparatus according to claim 1, wherein: the shell is in a shape of a Chinese character 'ri', and the upper end of the wall surrounding the cavity is provided with the groove or the through hole.