CN115655853B - Tritium Carbon Combustion Device - Google Patents
Tritium Carbon Combustion Device Download PDFInfo
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- CN115655853B CN115655853B CN202211397967.9A CN202211397967A CN115655853B CN 115655853 B CN115655853 B CN 115655853B CN 202211397967 A CN202211397967 A CN 202211397967A CN 115655853 B CN115655853 B CN 115655853B
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 205
- YZCKVEUIGOORGS-NJFSPNSNSA-N Tritium Chemical compound [3H] YZCKVEUIGOORGS-NJFSPNSNSA-N 0.000 title claims abstract description 90
- 229910052722 tritium Inorganic materials 0.000 title claims abstract description 90
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 85
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 85
- 238000010438 heat treatment Methods 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000003990 capacitor Substances 0.000 claims description 101
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 47
- 239000001569 carbon dioxide Substances 0.000 claims description 23
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 23
- 230000003197 catalytic effect Effects 0.000 claims description 17
- 230000001105 regulatory effect Effects 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 claims description 13
- 238000001514 detection method Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 7
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 26
- 239000000523 sample Substances 0.000 description 20
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- 230000000630 rising effect Effects 0.000 description 4
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- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
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- DOTMOQHOJINYBL-UHFFFAOYSA-N molecular nitrogen;molecular oxygen Chemical compound N#N.O=O DOTMOQHOJINYBL-UHFFFAOYSA-N 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The embodiment of the invention discloses a tritium carbon combustion device, which comprises a tritium carbon combustion assembly and a control assembly; the tritium carbon combustion assembly includes: the combustion furnace is internally provided with a heating component for heating the combustion furnace, a humidity sensor which is communicated with an outlet of the combustion furnace and used for measuring the content of water vapor, a flow sensor which is communicated with an inlet of the combustion furnace and used for measuring the flow of gas, and a temperature sensor which is arranged in the combustion furnace and used for measuring the temperature; the control assembly includes: a humidity sensing control module connected with the humidity sensor and used for detecting the content of water vapor is arranged; the device comprises a flow sensor, a flow sensing control module, a heating component, a temperature sensor, a singlechip and a humidity sensing control module, wherein the flow sensing control module is connected with the flow sensor and used for detecting the flow of gas, the heating control module is connected with the heating component and used for controlling the heating of the combustion furnace, the temperature sensing control module is connected with the temperature sensor and used for detecting the temperature of the combustion furnace, and the singlechip is used for controlling the heating control module, the flow sensing control module, the humidity sensing control module and the temperature sensing control module.
Description
Technical Field
The invention belongs to the technical field of gas detection, and particularly relates to a device for gas detection, in particular to a tritium carbon combustion device.
Background
The invention discloses a sample preparation system of a biological sample organic tritium carbon oxidation furnace, which gathers tritium and carbon 14 in a sample to be detected through a heating system and a collection system for subsequent detection, and the principle structure is similar to that of a common combustion furnace, and key factors such as heating time, combustion temperature, air inflow, vacuum amount and the like cannot be accurately controlled in the operation process, so that the traditional tritium carbon combustion furnace has high potential safety hazard, low operation efficiency and larger detection result error.
Disclosure of Invention
In view of this, some embodiments disclose a tritium carbon combustion device comprising:
The tritium carbon combustion assembly is used for combusting a tritium carbon sample and converting the tritium carbon sample into carbon dioxide and water;
The control assembly is connected with the tritium carbon combustion assembly and is used for controlling the tritium carbon combustion assembly;
Wherein, tritium carbon burning subassembly includes:
the combustion furnace is internally provided with a heating component which is used for heating the combustion furnace;
The humidity sensor is communicated with the outlet of the combustion furnace and is used for measuring the water vapor content in the gas at the outlet of the combustion furnace;
The flow sensor is communicated with an inlet of the combustion furnace and is used for measuring the gas flow in the combustion furnace;
The temperature sensor is arranged in the combustion furnace and is used for measuring the temperature in the combustion furnace;
the control assembly includes:
The humidity sensing control module is connected with the humidity sensor and used for detecting the water vapor content of the gas at the outlet of the combustion furnace;
the flow sensing control module is connected with the flow sensor and used for detecting the gas flow in the combustion furnace;
the heating control module is connected with the heating component and used for controlling the heating of the combustion furnace;
The temperature sensing control module is connected with the temperature sensor and used for detecting the temperature in the combustion furnace;
the singlechip is used for controlling the heating control module, the flow sensing control module, the humidity sensing control module and the temperature sensing control module.
Some embodiments disclose a tritium carbon combustion device, the humidity sensing control module comprising:
The humidity sensor interface comprises a first connecting port and a second connecting port, and the first connecting port is connected with a power supply;
A first operational amplifier;
the positive electrode input end of the first operational amplifier is sequentially connected with a second pull-down capacitor, a first pull-down resistor and a second connector of the humidity sensor interface; the first pull-down resistor, the first pull-down capacitor and the second pull-down capacitor are respectively grounded;
the output port of the first operational amplifier is connected with the first adjusting resistor and the negative electrode input end of the first operational amplifier; the first regulating resistor is further arranged and connected with the third pull-down capacitor, the fourth pull-down capacitor and the singlechip in sequence; the third pull-down capacitor and the fourth pull-down capacitor are grounded;
the lower port of the first operational amplifier is grounded;
the upper port of the first operational amplifier is provided with an input power supply and a fifth pull-down capacitor, and the fifth pull-down capacitor is further provided with a ground.
Some embodiments disclose a tritium carbon combustion device, the temperature sensing control module comprising:
The temperature sensor interface comprises a first connecting port and a second connecting port, and the first connecting port is connected with a power supply;
A second operational amplifier;
the positive electrode input end of the second operational amplifier is sequentially connected with a seventh pull-down capacitor, a sixth pull-down capacitor, a second pull-down resistor and a second connector of the temperature sensor interface; the second pull-down resistor, the sixth pull-down capacitor and the seventh pull-down capacitor are respectively grounded;
The output end of the second operational amplifier is connected with the second adjusting resistor and the negative electrode input end of the second operational amplifier; the second regulating resistor is further arranged to be connected with the eighth pull-down capacitor, the ninth pull-down capacitor and the singlechip in sequence; the eighth pull-down capacitor and the ninth pull-down capacitor are grounded;
The lower end of the second operational amplifier is grounded;
The upper end of the second operational amplifier is provided with an input power supply and a tenth pull-down capacitor, and the tenth pull-down capacitor is further grounded.
Some embodiments disclose a tritium carbon combustion device, the flow sensing control module comprising:
The flow sensor interface comprises a first connecting port and a second connecting port, and the first connecting port is connected with a power supply;
A third operational amplifier;
The positive electrode input end of the third operational amplifier is sequentially connected with a twelfth pull-down capacitor, an eleventh pull-down capacitor, a third pull-down resistor and a second connector of the flow sensor interface; the third pull-down resistor, the eleventh pull-down capacitor and the twelfth pull-down capacitor are respectively grounded;
the output end of the third operational amplifier is connected with the third adjusting resistor and the negative electrode input end of the third operational amplifier; the third regulating resistor is further connected with the thirteenth pull-down capacitor, the fourteenth pull-down capacitor and the singlechip in sequence; wherein the thirteenth pull-down capacitor and the fourteenth pull-down capacitor are grounded;
The lower end of the third operational amplifier is grounded.
Some embodiments disclose a tritium carbon combustion device, the heating control module comprising:
one end of the input resistor is connected with the singlechip, and the other end of the input resistor is sequentially connected with the fourth pull-down resistor and the base electrode of the triode;
the emitting electrode of the triode is grounded, and the collecting electrode of the triode is connected with the conducting ends of the electromagnet and the diode;
the electromagnet and the diode are arranged in parallel, the other ends of the electromagnet and the diode which are connected in parallel are connected with a control power supply and a fifteenth pull-down capacitor, and the fifteenth pull-down capacitor is further grounded;
the electromagnetic switch constant connection end of the electromagnet is connected with a heating power supply, and the connection end of the electromagnet is connected with the singlechip and the heating component; the disconnection end of the electromagnet is connected with the singlechip;
the heating component is connected with the heating power supply through a sliding rheostat.
Some embodiments disclose a tritium carbon combustion device, wherein at least one combustion tube is arranged in a combustion furnace, and each combustion tube is respectively provided with an air inlet pipeline and an air outlet pipeline.
Some embodiments disclose a tritium carbon combustion device, the combustion assembly further comprising:
The vacuum pump is communicated with the combustion tube;
a vacuum gauge arranged to detect the vacuum degree in the combustion tube;
And the stop valve is arranged between the vacuum pump and the combustion pipe.
Some embodiments disclose a tritium carbon combustion device, the control assembly further comprising:
and the protective cover detection module is connected with the singlechip and the protective cover sensor and is used for detecting the opening and closing of the protective cover.
Some embodiments disclose a tritium carbon combustion device, the control assembly further comprising:
And the alarm control module is connected with the singlechip and is configured to alarm according to instruction information of the singlechip.
Some embodiments disclose a tritium carbon combustion device, the combustion furnace including a combustion zone and a catalytic zone, the combustion zone and the catalytic zone being provided with temperature sensors, respectively.
The tritium carbon combustion device disclosed by the embodiment of the invention can automatically control the combustion furnace, dynamically detect the temperature rising process of the combustion furnace, the vacuum degree in the combustion furnace, the gas flow in the combustion furnace, the water vapor content and the like, automatically and accurately control the combustion process of a tritium carbon sample, improve the combustion efficiency and the operation safety, and have good application prospects in the technical field of tritium carbon detection.
Drawings
FIG. 1 is a schematic diagram of a tritium carbon combustion device disclosed in some embodiments;
FIG. 2 is a schematic diagram of a humidity sensing control module as disclosed in some embodiments;
FIG. 3 is a schematic diagram of a temperature sensing control module disclosed in some embodiments;
FIG. 4 is a schematic diagram of a flow sensing control module disclosed in some embodiments;
FIG. 5 is a schematic diagram of a heating control module as disclosed in some embodiments.
Reference numerals
1. Combustion assembly 2 control assembly
11. Humidity sensor of combustion furnace 12
13. Temperature sensor 14 flow sensor
21. Humidity sensing control module of singlechip 22
23. Temperature sensing control module 24 flow sensing control module
25. Heating module Rb slide rheostat
J1 First operational amplifier of humidity sensor interface U1
C1 First pull-down capacitor C2 and second pull-down capacitor
R1 first pull-down resistor R2 first regulating resistor
C3 Third pull-down capacitor C4 fourth pull-down capacitor
C5 Fifth pulldown capacitance J2 temperature sensor interface
U2 second operational amplifier C6 sixth pull-down capacitor
C7 Seventh pull-down capacitor R3 second pull-down resistor
R4 second regulating resistor C8 eighth pull-down resistor
C9 Ninth pull-down resistor C10 tenth pull-down capacitor
J3 Flow sensor interface U3 third operational amplifier
C11 Eleventh pull-down capacitor C12 twelfth pull-down capacitor
R5 third pull-down resistor R6 third regulating resistor
C13 Thirteenth pull-down capacitor C14 fourteenth pull-down capacitor
R7 input resistor R8 fourth pull-down resistor
C15 Fifteenth pull-down capacitor K1 electromagnet
Q1 triode D1 diode
J4 Heating power J5 heating component
Detailed Description
The word "embodiment" as used herein does not necessarily mean that any embodiment described as "exemplary" is preferred or advantageous over other embodiments. Performance index testing in the examples of the present invention, unless otherwise specified, was performed using conventional testing methods in the art. It should be understood that the terminology used in the description of the embodiments of the invention presented is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure of the embodiments of the invention.
Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which embodiments of the invention belong; other test methods and techniques not specifically identified in the examples of the present invention are those generally employed by those skilled in the art.
The terms "substantially" and "about" are used herein to describe small fluctuations. For example, they may refer to less than or equal to ±5%, such as less than or equal to ±2%, such as less than or equal to ±1%, such as less than or equal to ±0.5%, such as less than or equal to ±0.2%, such as less than or equal to ±0.1%, such as less than or equal to ±0.05%. Numerical data presented or represented herein in a range format is used only for convenience and brevity and should therefore be interpreted flexibly to include not only the numerical values explicitly recited as the limits of the range, but also to include all the individual numerical values or sub-ranges encompassed within that range. For example, a numerical range of "1 to 5%" should be interpreted to include not only the explicitly recited values of 1% to 5%, but also include individual values and sub-ranges within the indicated range. Thus, individual values, such as 2%, 3.5% and 4%, and subranges, such as 1% to 3%, 2% to 4% and 3% to 5%, etc., are included in this numerical range. The same principle applies to ranges reciting only one numerical value. Moreover, such an interpretation applies regardless of the breadth of the range or the characteristics being described.
In this document, including the claims, conjunctions such as "comprising," including, "" carrying, "" having, "" containing, "" involving, "" containing, "and the like are to be construed as open-ended, i.e., to mean" including, but not limited to. Only the conjunctions "consisting of … …" and "consisting of … …" are closed conjunctions.
Numerous specific details are set forth in the following examples in order to provide a better understanding of the present invention. It will be understood by those skilled in the art that the present invention may be practiced without some of these specific details. In the examples, some methods, means, instruments, devices, etc. well known to those skilled in the art are not described in detail in order to highlight the gist of the present invention.
On the premise of no conflict, the technical features disclosed by the embodiment of the invention can be combined at will, and the obtained technical scheme belongs to the disclosure of the embodiment of the invention.
In some embodiments, a tritium carbon combustion device comprises:
The tritium carbon combustion assembly is used for combusting a tritium carbon sample and converting the tritium carbon sample into carbon dioxide; normally, a tritium carbon sample is fully converted into water vapor and carbon dioxide through combustion reaction and catalytic reaction in a combustion assembly so as to accurately detect the carbon dioxide later and realize accurate analysis of the tritium carbon sample;
The control assembly is connected with the tritium carbon combustion assembly and is used for controlling the tritium carbon combustion assembly; the control component is a control functional component for controlling the tritium carbon combustion component to realize the function of the tritium carbon combustion component, and the control component automatically controls the tritium carbon combustion component so as to realize the efficient and complete conversion of the tritium carbon sample in the tritium carbon combustion component;
Wherein, tritium carbon burning subassembly includes:
the combustion furnace is internally provided with a heating component which is used for heating the combustion furnace;
The humidity sensor is communicated with the outlet of the combustion furnace and is used for measuring the water vapor content in the gas at the outlet of the combustion furnace;
The flow sensor is communicated with an inlet of the combustion furnace and is used for measuring the gas flow in the combustion furnace;
The temperature sensor is arranged in the combustion furnace and is used for measuring the temperature in the combustion furnace;
the control assembly includes:
The humidity sensing control module is connected with the humidity sensor and used for detecting the water vapor content of the gas at the outlet of the combustion furnace;
the flow sensing control module is connected with the flow sensor and used for detecting the gas flow in the combustion furnace;
The heating control module is connected with the heating device and used for controlling the heating of the combustion furnace;
The temperature sensing control module is connected with the temperature sensor and used for detecting the temperature in the combustion furnace;
the singlechip is used for controlling the heating control module, the flow sensing control module, the humidity sensing control module and the temperature sensing control module.
In some embodiments, the furnace body of the combustion furnace is cuboid, the combustion zone, the middle zone and the catalytic zone are respectively arranged in the furnace body, the air inlet pipeline is arranged at the end part close to the combustion zone, the air outlet pipeline is arranged at the end part close to the catalytic zone, the introduced oxidizing gas enters the combustion furnace from the air inlet pipeline, sequentially passes through the heating zone, the middle zone, the catalytic zone and the tritium carbon sample for reaction, and then is output to the collecting pipeline from the air outlet pipeline, the output gas is carbon oxide and water vapor, and carbon dioxide gas and water vapor are further collected.
In some embodiments, a combustion tube is arranged in the combustion furnace, the arrangement direction of the combustion tube is consistent with the direction of the furnace body of the combustion furnace, a combustion zone, a middle zone and a catalytic zone are correspondingly formed in the combustion tube, an air inlet pipeline is communicated with an inlet of the combustion tube, an air outlet pipeline is communicated with an outlet of the combustion tube, the introduced oxidizing gas enters the combustion tube to be heated, and passes through the heating zone, the middle zone and the catalytic zone, and after the oxidizing gas is combusted and catalytically reacted with tritium carbon samples, the generated vapor and carbon dioxide enter a collecting pipeline from the air outlet pipeline to collect carbon dioxide gas and vapor.
In some embodiments, a plurality of combustion pipes are arranged in the combustion furnace, the plurality of combustion pipes are arranged in parallel at intervals, and a plurality of tritium carbon samples can be placed in the plurality of combustion pipes, so that the utilization efficiency of the combustion furnace is improved. Normally, the plurality of combustion tubes are respectively provided with an air inlet pipeline and an air outlet pipeline, and are respectively monitored and controlled, tritium carbon samples in each combustion tube can be independently reacted, and the reaction process in each combustion tube of the control assembly is independently controlled without mutual interference.
In some embodiments, as shown in fig. 1, a tritium carbon combustion device comprises a tritium carbon combustion assembly 1 and a control assembly 2, wherein:
The tritium carbon combustion assembly 1 includes: the combustion furnace 11, there are heating units in the combustion furnace 11, the heating unit is used for heating the combustion furnace; the humidity sensor 12 is communicated with the outlet of the combustion furnace 11, the flow sensor 14 is communicated with the inlet of the combustion furnace 11, and the temperature sensor 13 is arranged in the combustion furnace;
The control assembly 2 comprises: the humidity sensing control module 22, the humidity sensing control module 22 is connected with the humidity sensor 12; the flow sensing control module 24, the flow sensing control module 24 is set up to connect with flow sensor 14; a heating control module 25, the heating control module 25 being arranged to be connected with a heating element in the combustion furnace 11; the temperature sensing control module 23, the temperature sensing control module 23 is set up to connect with temperature sensor 13; the singlechip 21 is respectively connected with the heating control module 25, the flow sensing control module 24, the humidity sensing control module 22 and the temperature sensing control module 23, and is used for controlling the heating control module 25, the flow sensing control module 24, the humidity sensing control module 22 and the temperature sensing control module 23.
In some embodiments, the gas outlet pipeline of the combustion tube is provided with a carbon dioxide sensor, and carbon dioxide is detected under the control of the control assembly.
The method can select a proper singlechip from the existing singlechips to be used as the singlechip in the tritium carbon combustion device, for example, the singlechip with the model STM32F103C8 can be selected, the core of the singlechip is 32-bit ARM Cortex-M3, and the Tail-training interrupt technology is adopted, so that the method has higher interrupt speed; the main frequency is 72MHz, a 64K flash memory and a 20K RAM are provided, the working voltage is 3.3V, and LQFP48 packaging is adopted.
Some embodiments disclose a tritium carbon combustion device, as shown in fig. 2, the humidity sensing control module comprises:
the humidity sensor interface J1, the humidity sensor interface J1 comprises a first connecting interface and a second connecting interface, the first connecting interface is connected with a power supply, and the power supply is 12V;
The positive electrode input end of the first operational amplifier U1 is provided with a second connection port which is sequentially connected with the second pull-down capacitor C2, the first pull-down capacitor C1, the first pull-down resistor R1 and the humidity sensor; the first pull-down resistor R1, the first pull-down capacitor C1 and the second pull-down capacitor C2 are respectively provided with a ground GND;
The output port of the first operational amplifier U1 is connected with the first regulating resistor R2 and the negative input end of the first operational amplifier U1; the first regulating resistor R2 is further arranged to be sequentially connected with a fourth pull-down capacitor C4 of the third pull-down capacitor C3 and a VOUT-1 port of the singlechip; the third pull-down capacitor C3 and the fourth pull-down capacitor C4 are provided with a ground GND; the resistance value range of the first regulating resistor R2 is 40KΩ -60 KΩ.
The lower port of the first operational amplifier U1 is provided with a ground GND;
The upper port of the first operational amplifier U1 is provided with an input power supply and a fifth pull-down capacitor C5, and the fifth pull-down capacitor C5 is further provided with a ground GND, wherein the input power supply is VCC-5.
Some embodiments disclose a tritium carbon combustion device, as shown in fig. 3, the temperature sensing control module comprises:
the temperature sensor interface J2 comprises a first connecting port and a second connecting port, wherein the first connecting port is connected with a power supply, and the power supply is set to be 12V;
A second operational amplifier U2; the positive electrode input end of the second operational amplifier U2 is provided with a second connection port which is sequentially connected with a seventh pull-down capacitor C7, a sixth pull-down capacitor C6, a second pull-down resistor R3 and a temperature sensor interface J2; the second pull-down resistor R3, the sixth pull-down capacitor C6 and the seventh pull-down capacitor C7 are respectively provided with a ground GND;
The output end of the second operational amplifier U2 is simultaneously connected with the second regulating resistor R4 and the negative electrode input end of the second operational amplifier U2; the second regulating resistor R4 is further arranged to be sequentially connected with the eighth pull-down capacitor C8, the ninth pull-down capacitor C9 and the port of the singlechip VOUT-2; the eighth pull-down capacitor C8 and the ninth pull-down capacitor C9 are arranged at the ground GND; wherein, the resistance value range of the second regulating resistor R4 is 100KΩ -120 KΩ.
The lower end of the second operational amplifier U2 is provided with a ground GND;
the upper end of the second operational amplifier U2 is provided with an input power supply and a tenth pull-down capacitor C10, and the tenth pull-down capacitor C10 is further provided with a ground GND, wherein the input power supply is set to VCC-5.
Some embodiments disclose a tritium carbon combustion device, as shown in fig. 4, a flow sensing control module comprising:
The flow sensor interface J3 comprises a first connecting interface and a second connecting interface, wherein the first connecting interface is connected with a power supply, and the power supply is set to be 12V;
A third operational amplifier U3; the positive electrode input end of the third operational amplifier U3 is sequentially connected with a twelfth pull-down capacitor C12, an eleventh pull-down capacitor C11, a third pull-down resistor R5 and a second connection port of the flow sensor interface J3; the third pull-down resistor R5, the eleventh pull-down capacitor C11, and the twelfth pull-down capacitor C12 are respectively set to the ground GND;
the output end of the third operational amplifier U3 is simultaneously connected with a third adjusting resistor R6 and the negative input end of the third operational amplifier U3; the third regulating resistor R6 is further arranged to be sequentially connected with a thirteenth pull-down capacitor C13, a fourteenth pull-down capacitor C14 and the singlechip; wherein the thirteenth pull-down capacitor C13 and the fourteenth pull-down capacitor C14 are set to the ground GND; wherein, the resistance value range of the third regulating resistor R6 is 20KΩ -40 KΩ.
The lower end of the third operational amplifier U3 is provided with a ground GND.
Some embodiments disclose a tritium carbon combustion device, as shown in fig. 5, the heating control module comprising:
the input resistor R) is arranged at one end of the input resistor R7 and is connected with a DO2 port of the singlechip, and the other end of the input resistor R7 is sequentially connected with a fourth pull-down resistor R8 and a base electrode of the triode Q1;
The emitter of the triode Q1 is provided with a ground GND, and the collector of the triode Q1 is simultaneously connected with the electromagnet K1 and the conducting end of the diode D1;
The electromagnet K1 is connected with the diode D1 in parallel, the other ends of the electromagnet K1 and the diode D1 which are connected in parallel are connected with a control power supply and a fifteenth pull-down capacitor C15, and the fifteenth pull-down capacitor C15 is further provided with a ground GND, wherein the control power supply is VCC-12;
The normal connection end of the electromagnetic switch of the electromagnet K1 is connected with a heating power supply J4, and the connection end of the electromagnet is connected with an NO2 port of the singlechip and a heating part J5; the disconnecting end of the electromagnet is connected with the NC2 port of the singlechip;
The heating member J5 is connected to the heating power source J4 through the slide rheostat Rb. The heating power may be set to 220V power.
Some embodiments disclose a tritium carbon combustion device, the combustion assembly further comprising: the vacuum pump is communicated with the combustion tube; a vacuum gauge arranged to detect the vacuum degree in the combustion tube; and the stop valve is arranged between the vacuum pump and the combustion pipe. Generally, the vacuum pump can provide vacuum for the combustion tube, exhaust air and interference gas in the combustion tube, such as carbon dioxide and the like, prevent accurate detection of tritium carbon samples, and transmit vacuum detection signals to the singlechip of the control assembly at any time, and the singlechip processes vacuum information according to a preset vacuum control program to control the operation of the vacuum pump; the stop valve can control the connection passage of the vacuum pump and the combustion tube and control the vacuumizing operation process; the cut-off and start of the vacuum pump can be automatically performed under the control of the singlechip, so that the automation of the operation process of the vacuum system is realized. The cut-off and start of the vacuum pump can be performed manually, so that the vacuum pump can be operated manually under the conditions of emergency and the like, and the safety problem is prevented.
Some embodiments disclose tritium carbon combustion device, and control assembly still includes visor detection module, sets up to be connected with singlechip and visor inductor for detect the opening and shutting of visor.
Some embodiments disclose a tritium carbon combustion device, the control assembly further comprises an alarm control module, and the alarm control module is connected with the singlechip and configured to alarm according to instruction information of the singlechip.
The tritium carbon combustion device disclosed by some embodiments, the control assembly further comprises a touch screen interface circuit, and the control assembly is connected with the singlechip and the touch screen and used for controlling the touch screen.
Some embodiments disclose a tritium carbon combustion device, the combustion furnace including a combustion zone and a catalytic zone, the combustion zone and the catalytic zone being provided with temperature sensors, respectively. So as to control different areas respectively, control different temperatures, and meet the reaction requirements of tritium carbon samples in the combustion area and the catalytic area.
In some embodiments, the total length of the furnace body of the combustion furnace is not more than 100cm, the total width is not more than 60cm, the total height is not more than 80cm, the total length of the inner cavity is not more than 44cm, the total width is not more than 35cm, the total height is not more than 10cm, three combustion pipes are arranged in the furnace body, and three air inlet pipes are respectively communicated with the three combustion pipes; the pipe diameter of the combustion pipe is not less than 60mm.
In some embodiments, the air inlet pipeline of the combustion pipe is provided with a flow valve, and the air inlet flow rate is controlled to be not more than 1L/min.
In some embodiments, the furnace body of the combustion furnace is filled with a heat insulation medium, and the heat insulation medium is arranged in the shell of the furnace body to prevent heat dissipation of the inner cavity so as to control the temperature in the inner cavity to be constant; typically, the insulating medium is insulating cotton.
In some embodiments, the heating component in the combustion furnace is an electric heating wire, and the electric heating wire is connected with the heating switch, the switching relay and the heating control module. The heating switch is a coil contact type switch, two ends of the heating switch are respectively connected with an external power supply and a heating wire, the heating wire is connected with the external power supply through a switch relay, and the switch relay is further connected with the singlechip; the switch relay is provided with a 5V power supply and is controlled by the singlechip to be opened or closed.
In some embodiments, the heating switch is a rheostat, the resistance value of which can be continuously adjusted between 1KΩ and 10KΩ, and the adjustment precision can be 10 Ω, so as to accurately adjust and control the temperature.
In some embodiments, the burner cap is sealed with a flange, or a snap-on fitting.
In some embodiments, the combustion operation of the tritium carbon in the tritium carbon combustion device comprises:
Placing tritium carbon sample and catalyst to be tested in proper position in the combustion tube, closing the protective cover of the combustion furnace, setting pressure cut-off threshold value, opening the vacuum pump connected with the combustion tube, and pumping out air in the combustion tube so as to remove carbon dioxide and other interference gases affecting detection accuracy; when the operation is started normally, an isolation cover of the combustion furnace is required to be opened, a sample to be tested is placed in a sample boat positioned in a combustion area, then the isolation cover is closed, for example, the pressure threshold of a combustion pipe can be set to be 1.10 10 -8 mBar, and then a vacuum pump is started; the vacuum pump can be a molecular pump or an ion pump; typically the pressure in the burner tube is dynamically displayed on the control panel; the combustion tube is properly heated in the vacuumizing process, so that the vacuumizing operation process can be quickened;
The cutoff conditions of the vacuumizing process are as follows: the vacuum degree in the combustion tube reaches a preset cut-off threshold value; the cut-off mode is as follows: the vacuum pump is manually turned off according to the pressure indication number of the combustion tube on the control panel, or the control assembly controls the vacuum pump to automatically stop working;
According to tritium carbon sample to be measured, setting a temperature rising curve or selecting a pre-stored temperature rising curve, heating the temperature of a catalytic region to at least 800 ℃ at a maximum rate, introducing oxygen through an air inlet of a combustion tube, controlling the air flow rate to be between 0 and 1L/min, and simultaneously slowly heating the combustion region to at least 1200 ℃ and keeping the temperature; the heating temperature of the catalytic zone is usually specifically selected according to the reactivity of the catalyst; after heating to the set temperature of the catalytic zone, the combustion zone starts to slowly heat, and the temperature is maintained at the temperature at which tritium and carbon 14 start to decompose, so that the tritium carbon sample is thoroughly decomposed and combined with the introduced oxygen to generate water vapor and carbon dioxide, and gases which are not completely combusted, such as carbon monoxide and the like, are further combined with the oxygen to generate carbon dioxide through the catalytic zone;
Most of tritium and carbon 14 in the tritium carbon sample are combusted and reacted in the combustion zone to form water vapor and carbon dioxide, and a small part of unreacted or incompletely reacted tritium and carbon monoxide pass through the intermediate zone to reach the catalytic zone, and continue to react under the action of the catalyst; typically a tritium carbon sample refers to a sample comprising tritium and/or carbon 14, such as plants, vegetables, meats, fish, shellfish, soil, paint, plastic, and the like;
While the reaction is carried out, collecting water vapor and carbon dioxide in the tail gas by using a collecting device; the method comprises the steps that when water vapor and carbon dioxide in tail gas are collected, a humidity sensor and a carbon dioxide concentration sensor which are arranged at an air outlet of a combustion tube detect water and carbon dioxide concentrations of gas generated by reaction, and measured values are fed back to a singlechip and displayed on a control panel in real time;
While the reaction is carried out, a plurality of control and monitoring modules detect the whole combustion furnace at the same time, and the method specifically comprises the following steps: the flow sensing control module monitors dynamic flow, the temperature sensing control module monitors the temperature in the combustion furnace, the protection cover detection module monitors the state of the combustion protection cover and the like, and detected data are displayed on the control panel in real time.
Normally, when the concentration values of the water vapor and the carbon dioxide are reduced below the cutoff threshold value, the control assembly automatically turns off the combustion furnace to stop the combustion operation; alternatively, the burner may be manually turned off based on the water vapor and carbon dioxide concentration values displayed on the control panel. For example, if the humidity sensor detects that the volume fraction of the water vapor in the tail gas is less than 0.001% and the carbon dioxide sensor detects that the volume fraction of the carbon dioxide is less than 0.0001%, the reaction is considered complete, at this time, the burner control system stops heating and continues to introduce the nitrogen-oxygen mixture for half an hour, and then the entire burner is closed.
In general, in the heating process of the combustion furnace, the singlechip simultaneously records the heating time and performs accumulated calculation, and after the total heating time reaches the set time, alarm control is started, and the catalyst is replaced according to the service life of the catalyst. The setting of the total heating period is generally determined according to the operating life of the catalyst.
The tritium carbon combustion device disclosed by the embodiment of the invention can automatically control the combustion furnace, dynamically detect the temperature rising process of the combustion furnace, the vacuum degree in the combustion furnace, the gas flow in the combustion furnace, the water vapor content and the like, automatically and accurately control the combustion process of a tritium carbon sample, improve the combustion efficiency and the operation safety, and have good application prospects in the technical field of tritium carbon detection.
The technical solutions disclosed in the embodiments of the present invention and the technical details disclosed in the embodiments of the present invention are only exemplary to illustrate the inventive concept of the present invention, and do not constitute a limitation on the technical solutions of the embodiments of the present invention, and all conventional changes, substitutions or combinations of the technical details disclosed in the embodiments of the present invention have the same inventive concept as the present invention, and are within the scope of the claims of the present invention.
Claims (8)
1. Tritium carbon combustion device, its characterized in that includes:
The tritium carbon combustion assembly (1) is used for combusting a tritium carbon sample and converting the tritium carbon sample into carbon dioxide and water;
The control assembly (2) is connected with the tritium carbon combustion assembly and is used for controlling the tritium carbon combustion assembly;
Wherein, tritium carbon combustion assembly (1) includes:
A combustion furnace (11) provided with a heating member therein for heating the combustion furnace;
A humidity sensor (12) which is communicated with the outlet of the combustion furnace (11) and is used for measuring the water vapor content in the gas at the outlet of the combustion furnace;
A flow sensor (14) arranged in communication with the inlet of the burner (11) for measuring the flow of gas in the burner;
A temperature sensor (13) provided in the combustion furnace (11) for measuring the temperature in the combustion furnace;
The control assembly (2) comprises:
The humidity sensing control module (22) is connected with the humidity sensor (12) and is used for detecting the water vapor content of the gas at the outlet of the combustion furnace;
A flow sensing control module (24) connected with the flow sensor (14) and used for detecting the gas flow in the combustion furnace;
A heating control module (25) connected with the heating component and used for controlling the heating of the combustion furnace;
a temperature sensing control module (23) which is connected with the temperature sensor (13) and is used for detecting the temperature in the combustion furnace;
The singlechip (21) is used for controlling the heating control module (25), the flow sensing control module (24), the humidity sensing control module (22) and the temperature sensing control module (23);
The humidity sensing control module includes:
the humidity sensor interface (J1) comprises a first connecting port and a second connecting port, and the first connecting port is connected with a power supply;
A first operational amplifier (U1);
The positive electrode input end of the first operational amplifier (U1) is sequentially connected with a second pull-down capacitor (C2), the first pull-down capacitor (C1), a first pull-down resistor (R1) and a second connector of the humidity sensor interface (J1); the first pull-down resistor (R1), the first pull-down capacitor (C1) and the second pull-down capacitor (C2) are respectively grounded;
The output port of the first operational amplifier (U1) is connected with a first adjusting resistor (R2) and the negative input end of the first operational amplifier (U1); the first regulating resistor (R2) is further connected with the third pull-down capacitor (C3), the fourth pull-down capacitor (C4) and the singlechip in sequence; the third pull-down capacitor (C3) and the fourth pull-down capacitor (C4) are grounded;
the lower port of the first operational amplifier (U1) is grounded;
An input power supply and a fifth pull-down capacitor (C5) are connected to the upper port of the first operational amplifier (U1), and the fifth pull-down capacitor (C5) is further grounded;
the temperature sensing control module includes:
A temperature sensor interface (J2) comprising a first connection port and a second connection port, the first connection port being arranged to connect to a power supply;
A second operational amplifier (U2);
the positive electrode input end of the second operational amplifier (U2) is sequentially connected with a second connecting port of a seventh pull-down capacitor (C7), a sixth pull-down capacitor (C6), a second pull-down resistor (R3) and a temperature sensor interface (J2); the second pull-down resistor (R3), the sixth pull-down capacitor (C6) and the seventh pull-down capacitor (C7) are respectively grounded;
the output end of the second operational amplifier (U2) is connected with a second adjusting resistor (R4) and the negative input end of the second operational amplifier (U2); the second regulating resistor (R4) is further connected with an eighth pull-down capacitor (C8), a ninth pull-down capacitor (C9) and the singlechip in sequence; wherein the eighth pull-down capacitor (C8) and the ninth pull-down capacitor (C9) are grounded;
the lower end of the second operational amplifier (U2) is grounded;
the upper end of the second operational amplifier (U2) is provided with an input power supply and a tenth pull-down capacitor (C10), and the tenth pull-down capacitor (C10) is further provided with a ground.
2. The tritium carbon combustion device of claim 1, wherein the flow sensing control module comprises:
a flow sensor interface (J3) comprising a first connection port and a second connection port, wherein the first connection port is provided with a connection power supply;
A third operational amplifier (U3);
The positive electrode input end of the third operational amplifier (U3) is sequentially connected with a twelfth pull-down capacitor (C12), a first pull-down capacitor (C11), a third pull-down resistor (R5) and a second connection port of the flow sensor interface (J3); the third pull-down resistor (R5), the tenth pull-down capacitor (C11) and the twelfth pull-down capacitor (C12) are respectively grounded;
The output end of the third operational amplifier (U3) is connected with a third adjusting resistor (R6) and the negative input end of the third operational amplifier (U3); the third regulating resistor (R6) is further connected with a thirteenth pull-down capacitor (C13), a fourteenth pull-down capacitor (C14) and the singlechip in sequence; wherein the thirteenth pull-down capacitor (C13) and the fourteenth pull-down capacitor (C14) are grounded;
The lower end of the third operational amplifier (U3) is grounded.
3. The tritium carbon combustion device of claim 1, wherein the heating control module comprises:
One end of the input resistor (R7) is connected with the singlechip, and the other end of the input resistor (R7) is sequentially connected with a fourth pull-down resistor (R8) and a base electrode of the triode (Q1);
The emitter of the triode (Q1) is grounded, and the collector of the triode (Q1) is connected with the conducting ends of the electromagnet (K1) and the diode (D1);
The electromagnet (K1) and the diode (D1) are arranged in parallel, the other ends of the electromagnet (K1) and the diode (D1) which are connected in parallel are connected with a control power supply and a fifteenth pull-down capacitor (C15), and the fifteenth pull-down capacitor (C15) is further grounded;
the electromagnetic switch normal connection end of the electromagnet (K1) is connected with a heating power supply (J4), and the connection end of the electromagnet (K1) is connected with a singlechip and a heating component (J5); the disconnection end of the electromagnet (K1) is connected with the singlechip;
the heating component (J5) is connected with the heating power supply (J4) through a sliding rheostat (Rb).
4. The tritium carbon combustion device of claim 1, wherein at least one combustion tube is arranged in the combustion furnace, and each combustion tube is respectively provided with an air inlet pipeline and an air outlet pipeline.
5. The tritium carbon combustion device of claim 4, wherein the combustion assembly further comprises:
A vacuum pump which is communicated with the combustion pipe;
a vacuum gauge arranged to detect the vacuum degree in the combustion tube;
and the stop valve is arranged between the vacuum pump and the combustion pipe.
6. The tritium carbon combustion device of claim 1, wherein the control assembly further comprises:
And the protective cover detection module is connected with the singlechip and the protective cover sensor and is used for detecting the opening and closing of the protective cover.
7. The tritium carbon combustion device of claim 1, wherein the control assembly further comprises:
And the alarm control module is connected with the singlechip and is configured to alarm according to instruction information of the singlechip.
8. The tritium carbon combustion device of claim 1, wherein the combustion furnace includes a combustion zone and a catalytic zone, the combustion zone and catalytic zone being provided with temperature sensors, respectively.
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| CN210402121U (en) * | 2019-10-16 | 2020-04-24 | 云霄县福兴诚新型建材有限公司 | Temperature control circuit of combustion chamber |
| CN111912942B (en) * | 2020-08-31 | 2023-03-03 | 马鞍山钢铁股份有限公司 | Online monitoring system and monitoring method for furnace combustion flue gas |
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