阅读说明：本技术 一种自动调节氧气供给量的分析仪 (Automatic adjust analyzer of oxygen supply volume ) 是由 周磊 汪赞宇 徐开群 罗建文 于 2020-12-17 设计创作，主要内容包括：本发明公开了一种自动调节氧气供给量的分析仪,包括供样品与氧气进行燃烧反应的燃烧管、以及内设有铜粒以用于吸收多余氧气的还原管,燃烧管的出口与还原管的入口通过石英管连通,燃烧管的入口处连通有输氧管、以及用于调节氧气供应量的流量控制器,石英管内设有用于检测从燃烧管排出的混合气体内氧含量的氧传感器；还包括与氧传感器、流量控制器信号连接的处理器,当氧传感器所检测的氧含量高于预设范围时,处理器控制流量控制器减少氧气供给量；当氧传感器所检测的氧含量低于预设范围时,处理器控制流量控制器增加氧气供给量。能够精确调节氧气供给量,保证样品充分分解的同时,减少铜粒的不必要浪费,降低成本。(The invention discloses an analyzer capable of automatically adjusting oxygen supply amount, which comprises a combustion pipe for enabling a sample to carry out combustion reaction with oxygen, and a reduction pipe internally provided with copper particles for absorbing redundant oxygen, wherein an outlet of the combustion pipe is communicated with an inlet of the reduction pipe through a quartz pipe; the oxygen content detected by the oxygen sensor is higher than a preset range, and the processor controls the flow controller to reduce the oxygen supply amount; the processor controls the flow controller to increase the oxygen supply amount when the oxygen content detected by the oxygen sensor is lower than a preset range. The oxygen supply amount can be accurately adjusted, the sample is fully decomposed, unnecessary waste of copper particles is reduced, and the cost is reduced.)

1. An analyzer capable of automatically adjusting oxygen supply amount is characterized by comprising a combustion tube (1) for enabling a sample to perform combustion reaction with oxygen, and a reduction tube (2) internally provided with copper particles (22) for absorbing redundant oxygen, wherein an outlet of the combustion tube (1) is communicated with an inlet of the reduction tube (2) through a quartz tube (3), an inlet of the combustion tube (1) is communicated with an oxygen delivery tube (5) and a flow controller (6) for adjusting oxygen supply amount, and an oxygen sensor (4) for detecting oxygen content in mixed gas discharged from the combustion tube (1) is arranged in the quartz tube (3);

the oxygen sensor (4) and the flow controller (6) are in signal connection, and the processor (7) is used for controlling the flow controller (6) to reduce the oxygen supply amount when the oxygen content detected by the oxygen sensor (4) is higher than a preset range; when the oxygen content detected by the oxygen sensor (4) is lower than a preset range, the processor (7) controls the flow controller (6) to increase the oxygen supply amount.

2. The analyzer for automatically adjusting the oxygen supply according to claim 1, wherein the processor (7) is a single chip microcomputer.

3. The analyzer for automatically adjusting the oxygen supply according to claim 2, wherein the flow controller (6) is a gas flow solenoid valve.

4. The analyzer for automatically adjusting oxygen supply according to claim 3, wherein the inlet of the combustion tube (1) is connected with a carrier gas tube for delivering a carrier gas, such as helium or argon, to blow water from the gas obtained by combusting the sample with oxygen to the reduction tube (2).

5. The analyzer for automatically adjusting the oxygen supply amount according to any one of claims 1 to 4, wherein the preset range is 2% to 5%.

6. The analyzer for automatically adjusting oxygen supply according to claim 5, further comprising a display in signal connection with the processor (7), the display being adapted to display the oxygen content and the oxygen supply.

Technical Field

The invention relates to the technical field of analytical instruments, in particular to an analyzer capable of automatically adjusting oxygen supply.

Background

In the existing hydrocarbon nitrogen sulfur analysis instrument, a sample and oxygen are subjected to oxidative decomposition reaction in a high-temperature environment of a combustion tube, and the reacted mixed gas enters a reduction tube filled with copper particles to absorb redundant oxygen.

In the reaction process, the supply of oxygen is crucial, if the oxygen is less, the sample cannot be completely decomposed, the content of carbon in the test result is low, and excessive carbon forms carbon black to pollute the whole test system; if more oxygen is available, the sample can be completely reacted, but the excessive oxygen enters the reduction tube to cause unnecessary consumption of copper particles and possibly interfere with the test results of other elements such as nitrogen and sulfur.

The current technique is to create an approximate oxygen supply that is hooked up to the sample type and sample mass through repeated experiments. However, this technique has the following problems:

firstly, the technology ignores the difference of carbon contents of different samples, for example, different standard coals have carbon contents of about 20 percent and reach about 80 percent in some cases;

second, disregard the change in sample mass, for example, the sample size of 20 mg at the previous time and 50 mg at the second time, all used the standard of 50 mg coal sample;

third, the technique ignores that the oxygen demand of the sample is different at different reaction stages. For example, the demand for oxygen is high immediately after the reaction is started, and then gradually decreases to zero.

The existing oxygen supply technology has the problems that in the combustion process of a sample, oxygen supply is insufficient, the sample cannot be completely decomposed, or oxygen supply is excessive, and the cost is wasted.

Therefore, how to solve the problem of large deviation in determining the oxygen supply amount in the prior art is a problem to be solved urgently by those skilled in the art.

Disclosure of Invention

In view of the above, the present invention provides an analyzer capable of automatically adjusting the oxygen supply amount, which can accurately adjust the oxygen supply amount during the combustion process, ensure the sufficient decomposition of the sample, reduce the unnecessary waste of copper particles, and reduce the cost.

In order to achieve the above purpose, the invention provides the following technical scheme:

an analyzer capable of automatically adjusting oxygen supply amount comprises a combustion tube for enabling a sample to perform combustion reaction with oxygen, and a reduction tube internally provided with copper particles for absorbing redundant oxygen, wherein an outlet of the combustion tube is communicated with an inlet of the reduction tube through a quartz tube, an inlet of the combustion tube is communicated with an oxygen delivery tube and a flow controller for adjusting the oxygen supply amount, and an oxygen sensor for detecting the oxygen content in mixed gas discharged from the combustion tube is arranged in the quartz tube;

the processor is in signal connection with the oxygen sensor and the flow controller, and controls the flow controller to reduce the oxygen supply amount when the oxygen content detected by the oxygen sensor is higher than a preset range; when the oxygen content detected by the oxygen sensor is lower than a preset range, the processor controls the flow controller to increase the oxygen supply amount.

Preferably, the processor is a single chip microcomputer.

Preferably, the flow controller is an air flow solenoid valve.

Preferably, the inlet of the combustion tube is connected with a carrier gas tube for conveying a carrier gas to blow water of the gas obtained by combusting the sample and the oxygen to the reduction tube, and the carrier gas is helium or argon.

Preferably, the predetermined range is 2% to 5%.

Preferably, the oxygen supplying device further comprises a display connected with the processor in a signal mode, and the display is used for displaying the oxygen content and the oxygen supplying amount.

According to the analyzer capable of automatically adjusting the oxygen supply amount, provided by the invention, in the process of oxidizing and decomposing a sample in a combustion tube, an oxygen sensor obtains the oxygen content in mixed gas, and sends real-time data of the oxygen content to a processor, the processor receives the real-time data of the oxygen content transmitted by the oxygen sensor and compares the real-time data with a preset range, if the oxygen content is higher than the preset range and indicates that the oxygen supply amount is too large, the processor sends a control signal to a flow controller to enable the flow controller to adjust the oxygen supply amount, and conversely, if the oxygen content is lower than the preset range and indicates that the oxygen supply amount is too small, the processor sends a control signal to the flow controller to enable the flow controller to adjust the oxygen supply amount.

Therefore, the oxygen supply amount can be dynamically and flexibly adjusted by a closed loop adjusting mode of detection, comparison, adjustment and retesting, different methods are not required to be set according to different samples and qualities, the requirements on operators are reduced, the consumption of copper particles is reduced, and the accuracy of detection is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a schematic diagram of an embodiment of an analyzer for automatically adjusting the oxygen supply according to the present invention.

Wherein, the device comprises a combustion tube 1, a crucible 11, a support column 12, a reduction tube 2, a corundum ball 21, a copper particle 22, a quartz tube 3, an oxygen sensor 4, an oxygen transmission tube 5, a flow controller 6 and a processor 7.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide an analyzer capable of automatically adjusting the oxygen supply amount, which can accurately adjust the oxygen supply amount in the combustion process, ensure the sufficient decomposition of a sample, reduce the unnecessary waste of copper particles and reduce the cost.

Referring to fig. 1, fig. 1 is a schematic diagram of an embodiment of an analyzer for automatically adjusting oxygen supply according to the present invention.

The invention provides an analyzer capable of automatically adjusting oxygen supply, which comprises a combustion tube 1 for enabling a sample to carry out combustion reaction with oxygen, and a reduction tube 2 internally provided with copper particles 22 for absorbing redundant oxygen, wherein an outlet of the combustion tube 1 is communicated with an inlet of the reduction tube 2 through a quartz tube 3, an inlet of the combustion tube 1 is communicated with an oxygen delivery tube 5 and a flow controller 6 for adjusting the oxygen supply, and an oxygen sensor 4 for detecting the oxygen content in mixed gas discharged from the combustion tube 1 is arranged in the quartz tube 3;

the oxygen sensor 4 and the flow controller 6 are in signal connection with the processor 7, and when the oxygen content detected by the oxygen sensor 4 is higher than a preset range, the processor 7 controls the flow controller 6 to reduce the oxygen supply amount; when the oxygen content detected by the oxygen sensor 4 is lower than a preset range, the processor 7 controls the flow controller 6 to increase the oxygen supply amount.

Wherein, the combustion tube 1 includes support column 12 and supplies the crucible 11 of sample and oxygen burning, be equipped with copper grain 22 in the reduction tube 2, copper grain 22 top is equipped with corundum ball 21, the export of combustion tube 1 passes through quartz capsule 3 intercommunication with the import of reduction tube 2, so that the mist after the burning in the combustion tube 1 gets into reduction tube 2 through quartz capsule 3, so that copper grain 22 in the reduction tube 2 absorbs unnecessary oxygen, the mist is discharged by the export of reduction tube 2 behind copper grain 22, become the gas that awaits measuring.

An oxygen sensor 4 is arranged in the quartz tube 3, the mixed gas after combustion in the combustion tube 1 is discharged from the outlet of the combustion tube 1 and enters the quartz tube 3, and the oxygen sensor 4 can detect the oxygen content in the mixed gas. The inlet of the combustion tube 1 is connected with an oxygen tube 5, the oxygen tube 5 is used for conveying oxygen to the combustion chamber, the oxygen tube 5 is connected with a flow controller 6, and the flow controller 6 can adjust the oxygen supply amount of the oxygen tube 5. And the flow controller 6 and the oxygen sensor 4 are in signal connection with the processor 7.

Specifically, in the process of oxidizing and decomposing the sample in the combustion tube 1, the oxygen sensor 4 obtains the oxygen content in the mixed gas and sends real-time data of the oxygen content to the processor 7, the processor 7 receives the real-time data of the oxygen content transmitted by the oxygen sensor 4 and compares the real-time data with a preset range, if the oxygen content is higher than the preset range, the oxygen supply amount is too large, the processor 7 sends a control signal to the flow controller 6 to enable the flow controller 6 to adjust the oxygen supply amount, and conversely, if the oxygen content is lower than the preset range, the oxygen supply amount is too small, the processor 7 sends a control signal to the flow controller 6 to enable the flow controller 6 to adjust the oxygen supply amount.

The analyzer capable of automatically adjusting the oxygen supply amount can dynamically and flexibly adjust the oxygen supply amount in a closed loop adjusting mode of detection, comparison, adjustment and re-detection, does not need to set different methods according to different samples and qualities, reduces the requirements on operators, reduces the consumption of copper particles 22 and improves the accuracy of detection.

On the basis of the above embodiment, in consideration of the specific selection of the processor 7, it is preferable that the processor 7 is a single chip microcomputer. Of course, the processor 7 may also select other microprocessors 7 as desired, such as a general purpose high performance microprocessor 7, an embedded microprocessor 7, or a digital signal processor 7, etc. The microcontroller is relatively low in cost.

On the basis of the above embodiment, in view of the specific selection of the flow rate controller 6, it is preferable that the flow rate controller 6 is an air flow solenoid valve. To ensure accurate control of the oxygen supply.

In addition to the above embodiments, it is preferable that the inlet of the combustion tube 1 is connected to a carrier gas tube for delivering a carrier gas, which is helium or argon, to blow the gas obtained by combusting the sample with oxygen to the reduction tube 2.

On the basis of the above-described embodiment, in consideration of the specific setting of the preset range, as a preferable one, the preset range is 2% to 5%. Namely, when the oxygen content in the mixed gas after combustion is 2% -5%, the oxygen supply amount is normal, otherwise, the oxygen supply amount needs to be adjusted.

On the basis of the above embodiment, it is preferable that a display is further included, which is connected to the processor 7 by signals, and is used for displaying the oxygen content and the oxygen supply amount. So as to observe whether the oxygen content and the oxygen supply are normal in real time, and repair the oxygen sensor 4 and the flow controller 6 in time when the abnormality occurs.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The analyzer for automatically adjusting the oxygen supply amount according to the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.