Combustion analysis and measurement system

Abstract

The utility model discloses a combustion analysis and measurement system, comprising: a combustion chamber, in which a crucible for placing a sample is arranged, the combustion chamber is provided with an igniter, and the igniter is used for igniting the sample to generate combustion gas; the gas supply assembly is used for introducing oxygen into the combustion chamber; the stirring assembly is arranged in the combustion chamber and used for uniformly mixing gas in the combustion chamber; the detection gas channel is connected with the combustion chamber and used for outputting mixed gas, and a pressure controller is arranged on the detection gas channel and used for outputting the mixed gas with preset pressure; the testing assembly is connected with the detection gas channel, is used for receiving the mixed gas and is used for detecting the element content in the mixed gas. Compared with the prior art, the combustion analysis and measurement system provided by the utility model has the advantages that the equipment cost and the labor cost required by testing can be reduced, and the testing process is effectively simplified.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of element content analysis of combustible substances, and more particularly to a combustion analysis measurement system. BACKGROUND

[0002] When coal, ore, biomass, medicine and other combustible substances need to be tested, the elements, calorific value, ash content and other components of the sample need to be tested. For coal, before entering the furnace for combustion, the calorific value, ash content, carbon, hydrogen, sulfur and other component indicators need to be quickly detected to achieve coal proportioning before entering the furnace, ensure the maximum combustion calorific value efficiency of different coal combustion proportioning to control costs, improve power generation output and ensure that tail gas emission, combustion ash content and coking meet the requirements.

[0003] The elements that constitute the organic matter of coal mainly include carbon, hydrogen, sulfur, etc. Among them, carbon and hydrogen are the main body of coal organic matter, and carbon and hydrogen are the elements that produce heat in the coal combustion process. Sulfur is a harmful component in coal. When coal burns, most of the sulfur is oxidized to sulfur dioxide, which is discharged with flue gas, polluting the atmosphere, harming plant growth and human health, and when coal with high sulfur content is used for metallurgical coking, it also affects the quality of coke and steel. Therefore, the content of carbon, hydrogen and sulfur is an important indicator for evaluating the medium.

[0004] The sample detector in the prior art can only test the single component of the sample. Different component analysis standards require different test instruments for testing, but the cost of equipment and labor is high.

[0005] Therefore, there is an urgent need for a combustion analysis measurement system that can reduce the cost of equipment and labor required for testing and effectively simplify the testing process. INVENTION CONTENT

[0006] To solve the above technical problems, the present application provides a combustion analysis measurement system which can reduce the cost of equipment and labor required for testing and effectively simplify the testing process.

[0007] The technical scheme provided by the present application is as follows:

[0008] A combustion analysis measurement system, comprising:

[0009] A combustion chamber is provided with a crucible for placing a sample inside the combustion chamber, and an igniter is provided on the combustion chamber, which is used to ignite the sample to generate combustion gas;

[0010] A gas supply assembly for supplying oxygen into the combustion chamber;

[0011] A detection gas channel connected with the combustion chamber and used for outputting the mixed gas, wherein a first switch for controlling the opening and closing of the gas channel is arranged on the detection gas channel;

[0012] A pressure controller arranged on the detection gas channel;

[0013] A test assembly connected with the detection gas channel and used for receiving the mixed gas, wherein the test assembly is used for detecting the element content in the mixed gas.

[0014] Preferably, the test assembly comprises:

[0015] A carbon infrared cell used for detecting the carbon element content in the mixed gas;

[0016] A sulfur infrared cell used for detecting the sulfur element content in the mixed gas;

[0017] A hydrogen infrared cell used for detecting the hydrogen element content in the mixed gas;

[0018] The carbon infrared cell, the sulfur infrared cell and the hydrogen infrared cell are arranged in series or in parallel with the outlet of the detection gas channel.

[0019] Preferably, the test assembly further comprises:

[0020] A gas purifier arranged on the detection gas channel, wherein the gas purifier is arranged between the first switch and the test assembly.

[0021] Preferably, the carbon infrared cell, the sulfur infrared cell and the hydrogen infrared cell are arranged in series;

[0022] Preferably, a tail switch is arranged at the gas channel outlet of the test assembly; or the test assembly further comprises a flow controller, wherein the flow controller is arranged in series with the detection gas channel.

[0023] Preferably, the test assembly comprises:

[0024] A first test branch and a second test branch, wherein the first test branch and the second test branch are arranged in parallel, and wherein a flow controller is arranged on the first test branch or a tail switch is arranged at the outlet of the first test branch, and a flow controller is arranged on the second test branch or a tail switch is arranged at the outlet of the second test branch.

[0025] Preferably, the test assembly further comprises a temperature control assembly.

[0026] Preferably, the temperature control assembly is arranged outside the combustion chamber and used for constant temperature control of the combustion chamber; or

[0027] The temperature control assembly is arranged outside the test assembly and is used for constant temperature control of the test assembly; or

[0028] The temperature control assembly is arranged outside the test assembly and the combustion chamber.

[0029] Preferably, the application further comprises:

[0030] A test channel for connecting the gas supply assembly and the detection gas channel, an outlet of the test channel being arranged between the first switch and the test assembly;

[0031] A second switch arranged on the test channel.

[0032] Preferably, the gas supply assembly comprises:

[0033] A first air inlet channel connected with the combustion chamber;

[0034] An oxygen source connected with an air inlet of the first air inlet channel;

[0035] A pressure detector for detecting the gas pressure in the combustion chamber;

[0036] A pressure regulating assembly arranged on the first air inlet channel, the pressure regulating assembly being connected with the pressure detector, and the pressure regulating assembly regulating the air flow of the first air inlet channel according to the gas pressure in the combustion chamber detected by the pressure detector.

[0037] Preferably, the pressure regulating assembly comprises:

[0038] A first electromagnetic valve arranged on the first air inlet channel;

[0039] A pressure regulator arranged between the first electromagnetic valve and the oxygen source;

[0040] A second air inlet channel, an air inlet of the second air inlet channel being arranged between the pressure regulator and the first electromagnetic valve, and an air outlet of the second air inlet channel being arranged between the first electromagnetic valve and the combustion chamber;

[0041] A second electromagnetic valve arranged on the second air inlet channel, the second electromagnetic valve being used for controlling the on-off of the second air inlet channel;

[0042] A throttle valve arranged on the second air inlet channel and connected with the second electromagnetic valve in series, the throttle valve being used for controlling the gas flow of the second air inlet channel.

[0043] Preferably, the application further comprises:

[0044] An exhaust channel connected with the combustion chamber;

[0045] a third electromagnetic valve arranged on the exhaust passage and configured to control opening and closing of the exhaust passage;

[0046] a suction member arranged in communication with an outlet of the exhaust passage and configured to suck gas in the combustion chamber.

[0047] The combustion analysis measurement system provided by the utility model, firstly, because the combustion chamber and the gas supply assembly are arranged, the crucible is arranged in the combustion chamber, the crucible is used for placing the sample, the igniter is arranged on the combustion chamber, the igniter is used for igniting the sample to generate combustion gas, and the gas supply assembly is further arranged, the gas supply assembly is used for inputting oxygen into the combustion chamber, in the high-pressure oxygen-enriched closed container, the igniter is ignited, and it is guaranteed that the sample can be quickly and fully combusted.Secondly, the detection gas passage and the test assembly are further arranged, the detection gas passage is used for being connected with the combustion chamber, the detection gas passage is used for outputting the mixed gas, the first switch is arranged on the detection gas passage, the opening and closing of the gas are controlled through the first switch, when the sample is combusted, the first switch is closed, until the sample is fully combusted, the first switch is opened, the mixed gas in the combustion chamber enters the test assembly through the detection gas passage and is detected, the pressure controller is arranged on the detection gas passage, the mixed gas of the preset pressure is output through the pressure controller, the test assembly is connected with the detection gas passage, the test assembly is used for receiving the mixed gas of the preset pressure, the element content in the mixed gas is detected through the test assembly, the pressure entering the test assembly is controlled through the pressure controller, the stability of the flow control is improved, and the precision and the accuracy of the detection analysis result are guaranteed and improved. It can be seen that, compared with the prior art, the combustion analysis measurement system in the utility model embodiment can reduce the equipment cost and the labor cost required for testing, and effectively simplify the testing process. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creating labor.

[0049] Figure 1 A structural schematic view of the combustion analysis measurement system provided by the utility model embodiment;

[0050] Figure 2 A first structural schematic view of the test assembly provided by the utility model embodiment;

[0051] Figure 3 A second structural schematic view of the test assembly provided by the utility model embodiment;

[0052] Figure 4 A third structural schematic view of a test assembly provided by the embodiment of the utility model;

[0053] Figure 5 A fourth structural schematic view of a test assembly provided by the embodiment of the utility model;

[0054] Figure 6 A first structural schematic view of a gas circuit diagram of a combustion analysis measurement system provided by the embodiment of the utility model;

[0055] Figure 7 A first structural schematic view of a combustion chamber provided by the embodiment of the utility model;

[0056] Figure 8 A first structural schematic view of a cover opening assembly provided by the embodiment of the utility model;

[0057] Figure 9 A first structural schematic view of a furnace body provided by the embodiment of the utility model;

[0058] Figure 10 A first structural schematic view of a furnace cover provided by the embodiment of the utility model;

[0059] Figure 11 A first structural schematic view of a combustion chamber provided by the embodiment of the utility model;

[0060] Figure 12 A first structural schematic view of a connecting assembly provided by the embodiment of the utility model (the second end of the lock rod is inserted into the locking groove);

[0061] Figure 13 A first structural schematic view of a connecting assembly provided by the embodiment of the utility model (the second end of the lock rod is separated from the locking groove).

[0062] 1, combustion chamber; 2, crucible; 3, igniter; 5, temperature control assembly; 6, detection gas channel; 61, first switch; 62, pressure controller; 63, gas purifier; 7, test channel; 8, test assembly; 41, first gas inlet channel; 42, oxygen source; 43, pressure detector; 44, pressure regulating assembly; 441, first electromagnetic valve; 442, pressure regulator; 443, second gas inlet channel; 444, second electromagnetic valve; 445, throttle valve; 81, carbon infrared cell; 82, sulfur infrared cell; 83, hydrogen infrared cell; 84, flow controller; 85, tail switch; 86, control system; 91, exhaust channel; 92, third electromagnetic valve; 93, suction member; 11, furnace body; 12, furnace cover; 13, sealing member, 14, connecting assembly; 15, driving assembly; 16, cover opening assembly; 17, stirring assembly; 18, positioning plate, 141, first boss; 142, first groove; 143, second groove; 144, second boss; 146, sliding groove; 147, locking rod; 151, furnace cover rotation driving mechanism; 152, furnace cover fixing plate; 161, furnace cover support plate; 162, driving member; 163, lifting seat; 164, lifting connecting seat; 165, lifting driving member; 166, synchronous pulley; 167, synchronous belt; 168, sliding rail. DETAILED DESCRIPTION

[0063] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0064] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0065] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0066] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0067] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0068] The embodiments of this utility model are written in a progressive manner.

[0069] like Figures 1 to 6 As shown, this utility model embodiment provides a combustion analysis and measurement system, including: a combustion chamber 1, a crucible 2 for placing a sample is disposed in the combustion chamber 1, an igniter 3 is disposed on the combustion chamber 1, the igniter 3 is used to ignite the sample to generate combustion gas; a gas supply component for introducing oxygen into the combustion chamber 1; a detection gas channel 6 connected to the combustion chamber 1 for outputting mixed gas, a first switch 61 for controlling the opening and closing of the gas path is disposed on the detection gas channel 6, a pressure controller 62 is disposed on the detection gas channel 6 for outputting mixed gas at a preset pressure; and a test component 8 connected to the detection gas channel 6 for receiving the mixed gas, the test component 8 being used to detect the element content in the mixed gas.

[0070] Existing sample testing instruments can only test a single component of a sample. Different analytical standard methods for different components and characteristics require different testing instruments, which are expensive in terms of both equipment and labor.

[0071] Existing technologies have the following drawbacks when detecting multiple composition values ​​in a single sample:

[0072] 1. The instrument is expensive and has a complex composition;

[0073] 2. When high-temperature decomposition is required, a high calcination temperature is needed, and the calcination time is long.

[0074] 3. The test takes a long time, requiring decomposition processes such as high-temperature calcination and solution decomposition and absorption, which are time-consuming and complex.

[0075] The combustion analysis measurement system provided by the utility model, first of all, because of being provided with the combustion chamber 1 and the gas supply assembly, wherein, the crucible 2 is arranged in the combustion chamber 1, the crucible 2 is used for placing the sample, the igniter 3 is arranged on the combustion chamber 1, the igniter 3 is used for igniting the sample to generate combustion gas, and the gas supply assembly is also arranged, the gas supply assembly is used for importing oxygen into the combustion chamber 1, in the high-pressure oxygen-enriched closed container, the ignition of the igniter 3 is guaranteed, and the sample can be quickly and fully combusted. Secondly, the detection gas channel 6 and the test assembly 8 are also arranged, wherein, the detection gas channel 6 is used for being connected with the combustion chamber 1, the detection gas channel 6 is used for outputting the mixed gas, the first switch 61 is arranged on the detection gas channel 6, the on-off of the gas circuit is controlled through the first switch 61, when the sample is combusted, the first switch 61 is closed, until the sample is fully combusted, the first switch 61 is opened, the mixed gas in the combustion chamber 1 enters the test assembly 8 through the detection gas channel 6 and is detected, the pressure controller 62 is arranged on the detection gas channel 6, the mixed gas of the preset pressure is output through the pressure controller 62, the test assembly 8 is connected with the detection gas channel 6, the test assembly 8 is used for receiving the mixed gas of the preset pressure, the element content in the mixed gas is detected through the test assembly 8, the pressure entering the test assembly 8 is controlled through the pressure controller 62, the stability of the flow control is improved, and the precision and the accuracy of the detection analysis result are guaranteed and improved. It can be seen that, compared with the prior art, the combustion analysis measurement system in the utility model embodiment can reduce the equipment cost and the labor cost required for testing, and effectively simplify the testing process.

[0076] In the above system, first, the combustion chamber 1 in the utility model embodiment is specifically a sealed high-pressure-resistant closed container, ignition is carried out in the high-pressure oxygen-enriched closed container, so that the sample is quickly combusted, and the combustion speed can be greatly increased; secondly, the element content in the mixed gas is detected through the test assembly 8, a plurality of combustion compositions and component values can be tested through single combustion, in addition, the composition concentration of the mixed gas is directly tested, and the experimental data obtained has higher accuracy compared with the result of the nondestructive online testing method.

[0077] In the above system, as one of the embodiments, the test assembly 8 in the utility model embodiment includes a carbon infrared cell 81, a sulfur infrared cell 82 and a hydrogen infrared cell 83, the carbon infrared cell 81 is used for detecting the content of carbon elements in the mixed gas, the sulfur infrared cell 82 is used for detecting the content of sulfur elements in the mixed gas, and the hydrogen infrared cell 83 is used for detecting the content of hydrogen elements in the mixed gas, wherein, the carbon infrared cell 81, the sulfur infrared cell 82 and the hydrogen infrared cell 83 are connected in series or in parallel with the outlet of the detection gas channel 6.

[0078] In the system, as one of the implementations, the combustion analysis measurement system further comprises a gas purifier 63, which is arranged between the first switch and the test assembly, and the mixed gas entering the test assembly is purified by the gas purifier, so that the test result is more accurate.

[0079] In the system, the carbon infrared cell, the sulfur infrared cell, and the hydrogen infrared cell are arranged in series; the tail switch 85 is arranged at the gas path outlet of the test assembly; or the test assembly further comprises a flow controller, which is arranged at the gas path inlet or the gas path outlet of the test assembly.

[0080] Specifically, as one of the first specific implementations, as shown in Figure 2 and Figure 3 The carbon infrared cell 81, the sulfur infrared cell 82, and the hydrogen infrared cell 83 are arranged in series to form a test module, and the test module is arranged in series with the detection gas channel 6; the mixed gas with a preset pressure enters the carbon infrared cell 81, the sulfur infrared cell 82, and the hydrogen infrared cell 83 in sequence through the detection gas channel 6, and the contents of carbon elements, sulfur elements, and hydrogen elements are detected in sequence. It should be noted that in this embodiment, the order of the carbon infrared cell 81, the sulfur infrared cell 82, and the hydrogen infrared cell 83 is not limited. The series arrangement is suitable for the case that the cell bodies of different elements can be measured at the same pressure (concentration) with good effect. The advantage is that the test result can be obtained by less combustion gas. Moreover, the structure and control are simple, and the cost is low.

[0081] In the above structure, the outlet of the test assembly 8 in the embodiment of the utility model can adopt a closed structure or a flow type test structure, as shown in Figure 3 The closed structure is that the tail switch 85 is arranged at the outlet of the test assembly 8; when the mixed gas is tested, the tail switch 85 is closed, the concentration of the mixed gas is indirectly controlled by the pressure controller, and the measurement is performed. The flow type test structure is that the flow controller is arranged in the gas path of the test assembly 8; as shown in Figure 2 The pressure in the test assembly is adjusted by the pressure controller, the flow in the gas path of the test assembly is adjusted by the flow controller, the contents of the elements in the mixed gas are detected by the test assembly, the stability of the flow of the mixed gas entering the detection assembly is controlled by the flow controller, and the precision and accuracy of the detection analysis result are ensured and improved. Compared with the closed test structure, the flow type test structure has a larger test sample and higher data accuracy.

[0082] In addition, the test assembly can also adopt a parallel connection mode, as shown in Figure 4 and Figure 5As shown, the test assembly 8 includes: a first test branch and a second test branch, the first test branch and the second test branch are arranged in parallel, wherein the first test branch is provided with a flow controller or a tail switch 85 at the outlet of the first test branch, and the second test branch is provided with a flow controller or a tail switch 85 at the outlet of the second test branch.

[0083] As a second specific embodiment, the carbon infrared cell 81, the sulfur infrared cell 82 and the hydrogen infrared cell 83 in the embodiment of the utility model are arranged in parallel to form a test module, and the test module is arranged in series with the detection gas channel 6, and the mixed gas with a preset pressure enters the carbon infrared cell 81, the sulfur infrared cell 82 and the hydrogen infrared cell 83 respectively to detect each element.

[0084] As a third specific embodiment, the carbon infrared cell 81, the sulfur infrared cell 82 and the hydrogen infrared cell 83 in the embodiment of the utility model can be arranged in parallel in any two ways and in series with the other way to form a test module, and the test module is connected with the detection gas channel 6.

[0085] In the above structure, the test module in the embodiment of the utility model includes but is not limited to the carbon infrared cell 81, the sulfur infrared cell 82 and the hydrogen infrared cell 83, and can also be combined and installed according to the purpose of testing.

[0086] Parallel arrangement is suitable for measuring cell bodies of different elements which need different test pressures (concentrations) to obtain better test results. The advantage of parallel arrangement is that by increasing the pressure (concentration) in the effective measurement concentration range of the measurement assembly, the measurement result can be obtained more quickly, and by arranging different elements in parallel, more accurate test results can be obtained. The disadvantage is that the multi-path separate control result and cost are relatively high, and the single-path gas consumption is relatively large.

[0087] At the tail of the branch gas path arranged in parallel, a tail switch 85 can be arranged, the concentration of the branch gas path is indirectly changed by adjusting the pressure of the pressure controller, so that a better test structure is obtained; a flow controller can also be arranged in the branch gas path arranged in parallel, and a flow type test structure is adopted by the flow controller, the test sample is larger, and the data accuracy is higher.

[0088] In the above system, the test assembly 8 provided by the embodiment of the utility model further includes a control system 86, the control system 86 is connected with the test module, the test module saves the test result in the control system 86, and the data analysis and calculation are carried out through the control system 86, so that the test composition and the composition content value are obtained.

[0089] Further, as one of the preferred embodiments, the combustion analysis measurement system in the embodiment of the utility model further comprises a temperature control assembly 5, wherein the temperature control assembly 5 can be arranged outside the combustion chamber to set the combustion chamber at constant temperature, so that water vapor generated in the combustion process of the sample can be prevented from condensing in the combustion chamber, and the stability of the test result is ensured, or the temperature control assembly can also be arranged outside the test assembly 8 to heat the test assembly 8, the accuracy of the test element of the test assembly 8 is greatly affected by temperature, and the temperature control assembly 5 is arranged to ensure the accuracy of the test result, or the temperature control assembly can be arranged outside the combustion chamber and the test assembly at the same time, and the effect is better.

[0090] In the above structure, as one of the embodiments, the combustion analysis measurement system in the embodiment of the utility model further comprises a test channel 7, the test channel 7 is used to purge the test assembly to avoid residual gas in the test assembly, the test channel 7 is used to communicate the gas supply assembly and the detection gas channel, the outlet of the test channel 7 is arranged between the first switch and the test assembly, and the second switch is arranged on the test channel 7, when it is necessary to purge the test assembly, the first switch is closed and the second switch is opened, and oxygen is input into the test assembly through the gas supply assembly to purge, when it is necessary to test the mixed gas, the second switch is closed and the first switch is opened, and the mixed gas enters the test assembly through the detection gas channel to be detected.

[0091] The purging process of the test assembly through the test channel 7 can be arranged after the test assembly completes detection or before the sample is combusted, preferably, the purging process of the test assembly through the test channel 7 is arranged before the sample is combusted, and the test error is smaller.

[0092] In the above system, as one of the embodiments, as shown in Figure 6 The gas supply assembly in the embodiment of the utility model comprises a first gas inlet channel 41, an oxygen source 42, a pressure detector 43 and a pressure adjusting assembly 44, wherein the first gas inlet channel 41 is used to communicate with the combustion chamber 1, the oxygen source 42 communicates with the gas inlet of the first gas inlet channel 41, the pressure detector 43 is used to detect the gas pressure in the combustion chamber 1, the pressure adjusting assembly 44 is arranged on the first gas inlet channel 41, the pressure adjusting assembly 44 is connected with the pressure detector 43, and according to the gas in the combustion chamber 1 detected by the pressure detector 43, the pressure adjusting assembly 44 adjusts the gas flow at the first gas inlet channel 41.

[0093] Specifically, when the content of the test mixed gas is tested, the more accurate the pressure control of the mixed gas in the combustion chamber 1 is, the more accurate the test result is, and vice versa. By providing the pressure adjusting assembly 44 and the pressure detector 43, the air flow in the first air inlet channel 41 is adjusted by the pressure adjusting assembly 44, so that the pressure of the mixed gas in the combustion chamber 1 is constant, and the accuracy of the test is higher.

[0094] Further, as one of the preferred embodiments, the pressure adjusting assembly 44 in the embodiment of the utility model comprises a first electromagnetic valve 441 and a pressure regulator 442, wherein the first electromagnetic valve 441 is arranged on the first air inlet channel 41, the pressure regulator 442 is arranged between the first electromagnetic valve 441 and the oxygen source 42, the oxygen source 42 is used for providing oxygen into the combustion chamber 1, so as to ensure that the sample in the combustion chamber 1 is burned in an oxygen-rich environment, the pressure regulator 442 is arranged on the first air inlet channel 41 and is used for adjusting the initial air inlet pressure of the oxygen source 42, and the first electromagnetic valve 441 is used for controlling the on-off of the first air inlet channel 41. Secondly, a second air inlet channel 443, a second electromagnetic valve 444 and a throttle valve 445 are further arranged, the air inlet of the second air inlet channel 443 is arranged between the pressure regulator and the first electromagnetic valve 441, the air outlet of the second air inlet channel 443 is arranged between the first electromagnetic valve 441 and the combustion chamber 1, the second electromagnetic valve 444 is arranged on the second air inlet channel 443 and is used for controlling the on-off of the second air inlet channel 443, and the throttle valve 445 is arranged on the second air inlet channel 443 and is arranged in series with the second electromagnetic valve 444, so as to control the air flow of the second air inlet channel 443 by the throttle valve 445.

[0095] Specifically, when oxygen needs to enter the combustion chamber 1 quickly, as the first embodiment, the first electromagnetic valve 441 can be opened and the second electromagnetic valve 444 can be closed, so that the oxygen in the oxygen source 42 can quickly enter the combustion chamber 1 through the first air inlet channel 41; as the second embodiment, the first electromagnetic valve 441 and the second battery valve can be opened at the same time, so that the oxygen in the oxygen source 42 can enter the combustion chamber 1 through the first air inlet channel 41 and the second air inlet channel 443.

[0096] When oxygen needs to enter the combustion chamber 1 slowly, the first battery valve can be closed and the second battery valve can be opened, so that the flow of oxygen entering the combustion chamber 1 is controlled by controlling the second electromagnetic valve 444 and the throttle valve 445.

[0097] When rapid oxygen intake is required, the first electromagnetic valve 441 is opened or the first electromagnetic valve 441 and the second electromagnetic valve 444 are simultaneously opened, rapid oxygen intake of the combustion chamber 1 is realized, when the pressure detector 43 detects that the gas pressure in the combustion chamber 1 approaches the preset pressure, the first electromagnetic valve 441 is closed and the second electromagnetic valve 444 is opened, the intake flow is controlled at the throttle valve 445, and slow intake is realized.

[0098] The gas supply assembly in the embodiment of the utility model can realize rapid intake and slow intake, and ensures the accuracy of the oxygen content in the combustion chamber 1.

[0099] In the above system, the combustion analysis measurement system in the embodiment of the utility model further comprises an exhaust passage 91, a third electromagnetic valve 92 and a suction member 93, wherein the exhaust passage 91 is communicated with the combustion chamber 1, the exhaust passage 91 is used for pressure relief in the combustion chamber 1, the third electromagnetic valve 92 is arranged on the exhaust passage 91, the third electromagnetic valve 92 is used for controlling the on-off of the exhaust passage 91, the suction member 93 is communicated with the outlet of the exhaust passage 91, and the suction member 93 is used for extracting the gas in the combustion chamber 1, so that the gas in the combustion chamber 1 is rapidly exhausted, and the tail gas after combustion is avoided to be left, so that the result of the subsequent sample is avoided to be out of tolerance.

[0100] Further, the suction member 93 is specifically an exhaust pump or a vacuum generator.

[0101] In the above system, as one of the embodiments, the combustion chamber 1 in the embodiment of the utility model is provided with a stirring assembly 17, the gas in the combustion chamber 1 is uniformly mixed through the stirring assembly 17, the consistency of the gas in the combustion chamber 1 is ensured, the mixed gas is good in representativeness, and the error of the subsequent detection result is avoided.

[0102] In the above system, as shown in Figures 7 to 13 The combustion chamber 1 in the embodiment of the utility model comprises a furnace body 11 and a furnace cover 12, a thread or a bayonet is arranged between the furnace body and the furnace cover, the furnace body and the furnace cover are connected through the thread or the bayonet, and are sealed through the sealing ring between the furnace body and the furnace cover.

[0103] Further, the furnace body and the furnace cover are made of high-pressure and oxidation-resistant corrosion materials, so that the sample is avoided to corrode and damage the combustion chamber 1 during rapid combustion.

[0104] In the above system, as one of the embodiments, the igniter 3 in the embodiment of the utility model is aligned with the sample in the crucible 2, and the sample is ignited through the heat generated by the igniter 3.

[0105] As one of the specific embodiments, the igniter 3 in the embodiment of the utility model is specifically an electrode igniter; or, the igniter in the embodiment of the utility model is specifically a laser igniter 3, and the laser igniter 3 is arranged outside the combustion furnace.

[0106] In the system, as one of the specific embodiments, the stirring assembly 17 in the embodiment of the utility model is specifically a stirring fan. Further, the stirring fan is at least provided with one, and according to the test requirement, the stirring fan can be provided with multiple, and the gas in the combustion chamber 1 is uniformly mixed through the stirring fan.

[0107] In the system, as one of the specific embodiments, the upper portion of the stirring assembly 17 in the embodiment of the utility model is provided with a fireproof baffle, and the fireproof baffle is used for blocking the influence of the sample combustion flame and heat on the stirring assembly 17.

[0108] In the system, as one of the specific embodiments, the combustion chamber 1 in the embodiment of the utility model is provided with a bracket, and the bracket is provided with a positioning surface for mounting the crucible 2, and the bracket is used for placing the crucible 2 and positioning the sample to be combusted.

[0109] The combustion chamber further comprises a connecting assembly 14, a driving assembly 15 and an uncovering assembly 16. The connecting assembly 14 is arranged at the inner circumferential side of the opening of the furnace body 11 and the outer circumferential side of the furnace cover 12. The furnace cover 12 is used for opening and closing the opening of the furnace body 11. The driving assembly 15 is used for driving the relative rotation between the furnace cover 12 and the furnace body 11, so that the furnace cover 12 and the furnace body 11 have a locked state and an unlocked state. When the furnace cover 12 and the furnace body 11 are in the locked state, the furnace cover 12 and the furnace body 11 are sealingly connected through the connecting assembly 14, so as to avoid that the high-pressure environment inside the combustion chamber 1 blows open the furnace cover 12. When the furnace cover 12 and the furnace body 11 are in the unlocked state, the uncovering assembly 16 is used for separating the furnace cover 12 and the furnace body 11, so as to facilitate the sample transfer mechanism 7 to transfer the sample to be tested and the crucible 2.

[0110] Further, as one of the specific embodiments, the combustion chamber in the embodiment of the utility model further comprises a positioning plate 18 and a sealing element 13. The positioning plate 18 is arranged at the inner side of the opening and fixedly connected with the furnace body 11. The positioning plate 18 is used for abutting against the inner side of the furnace cover 12, so as to position the position of the furnace cover 12. The sealing element 13 is arranged between the positioning plate 18 and the furnace cover 12. When the furnace cover 12 is closed, the sealing element 13 is used for sealing the combustion chamber 1.

[0111] Further, as one of the specific embodiments, the sealing element 13 in the embodiment of the utility model can be arranged on the furnace cover 12 or the sealing plate. Preferably, the sealing element 13 is arranged on the sealing plate.

[0112] Further, the sealing member 13 is specifically a sealing ring.

[0113] In the above structure, the driving assembly 15 is used to drive the relative rotation between the furnace cover 12 and the furnace body 11, so that the furnace cover 12 and the furnace body 11 have a locking state and an unlocking state.

[0114] As the first embodiment, the connecting assembly 14 includes an inner thread line and an outer thread line, the inner thread line is arranged on the inner circumferential side of the opening, the outer thread line is arranged on the outer circumferential side of the furnace cover 12, the driving assembly 15 drives the furnace cover 12 and the furnace body 11 to rotate around the first direction, so that the furnace cover 12 and the furnace body 11 are fixedly connected, when it is needed to open the furnace cover 12, the driving assembly 15 drives the furnace cover 12 and the furnace body 11 to rotate around the second direction, so that the furnace cover 12 and the furnace body 11 are separated.

[0115] As the second embodiment, as shown in Figure 9 and Figure 10 The connecting assembly 14 includes a first boss 141, a first groove 142, a second boss 144 and a second groove 143, the first boss 141 is arranged above the positioning plate 18, the first boss 141 is fixedly connected with the furnace body 11, the first boss 141 extends from the inner circumferential side of the opening to the axis direction of the furnace body 11, the first boss 141 is provided with a plurality of first bosses 141, the plurality of first bosses 141 are arranged at intervals around the inner circumferential side of the opening, the first grooves 142 are formed between adjacent first bosses 141, the second grooves 143 are arranged on the outer circumferential side of the furnace cover 12, the second grooves 143 are used in cooperation with the first bosses 141, the second bosses 144 are formed between adjacent two second grooves 143, the second bosses 144 are used in cooperation with the first grooves 142, when the furnace body 11 and the furnace cover 12 are in the locking state, the second boss 144 is located between the first boss 141 and the positioning plate 18, the second boss 144 is limited by the first boss 141 and the positioning plate 18, so that the high-temperature and high-pressure environment in the combustion chamber 1 cannot separate the furnace cover 12 and the furnace body 11, when the furnace body 11 and the furnace cover 12 are in the locking state, the second boss 144 is opposite to the first groove 142, and the first boss 141 is opposite to the second groove 143, so that the furnace cover 12 and the furnace body 11 can be separated.

[0116] As the third embodiment, as shown in Figure 12 and Figure 13As shown, the connecting assembly 14 in the embodiment of the present application further comprises locking grooves, a sliding groove 146 and a locking rod 147, wherein the locking grooves are arranged on the outer circumferential side of the opening, a plurality of locking grooves are arranged at intervals around the outer circumferential side of the opening, the sliding groove 146 is arranged on the furnace cover 12, the first end of the locking rod 147 is in sliding connection with the sliding groove 146, and the second end of the locking rod 147 is used for being inserted into the locking groove. When the first end of the locking rod 147 moves to the first side of the sliding groove 146, the second end of the locking rod 147 is separated from the locking groove (see Figure 13 ), and when the second end of the locking rod 147 moves to the second side of the sliding groove 146, the second end of the locking rod 147 is inserted into the locking groove (see Figure 12 ). The relative rotation between the furnace cover 12 and the furnace body 11 is performed so that the locking rod 147 slides from the first side of the locking groove to the second side of the locking groove.

[0117] In the above structure, as one of the embodiments, the driving assembly 15 in the embodiment of the present application can directly drive the rotation of the furnace cover. As another embodiment, the driving assembly in the embodiment of the present application comprises a furnace cover rotation driving mechanism 151 and a furnace cover fixing plate 152. The furnace cover fixing plate 152 is used for fixedly connecting with the center of the furnace cover 12, the furnace cover fixing plate 152 is connected with the furnace cover rotation driving mechanism 151, and the furnace cover 12 fixing plate is driven to rotate by the furnace cover rotation driving mechanism 151.

[0118] In the above device, when the furnace cover 12 is in an unlocked state, the cover opening assembly 16 separates the furnace cover 12 from the furnace body 11. As the first embodiment, as shown in Figure 8 , the cover opening assembly 16 in the embodiment of the present application is used to drive the furnace cover 12 to move along the axis direction of the furnace body 11, so that the furnace cover 12 is separated from the furnace body 11. The first cover opening assembly 16 provided in the embodiment of the present application is mainly applicable to the vertical combustion chamber 1.

[0119] As one of the embodiments, the cover opening assembly 16 in the embodiment of the present application comprises a lifting seat 163, a lead screw connected with the lifting seat 163, a lead screw nut in transmission connection with the lead screw, the lead screw nut is connected with a lifting connecting seat 164, the lifting connecting seat 164 is connected with the furnace cover 12, a lifting driving assembly driving the rotation of the lead screw, the lifting driving assembly drives the rotation of the lead screw, thereby driving the lead screw nut and the lifting connecting seat 164 to move along the extension direction of the lead screw, and thereby driving the furnace cover 12 to open and close.

[0120] Further, the lifting driving assembly in the embodiment of the present application comprises a lifting driving member 165, a synchronous pulley 166 and a synchronous belt 167. The lifting driving member 165 is connected with the lead screw through the synchronous pulley 166 and the synchronous belt 167, and drives the rotation of the lead screw.

[0121] Furthermore, the lifting drive component is preferably a drive motor.

[0122] Furthermore, the lifting connecting seat 164 is connected to the lifting seat 163 by a slide rail 168, which is used to guide the lifting connecting seat 164.

[0123] As a second implementation method, such as Figure 11 As shown, the cover opening assembly 16 in this embodiment of the present invention includes a furnace cover support plate 161, a rotating shaft, and a driving component 162. The furnace cover support plate 161 is disposed on the outside of the furnace cover, and the furnace cover support plate 161 is rotatably connected to one side of the furnace body 11 via the rotating shaft. The driving component 15 is mounted on the furnace cover support plate 161, and the output shaft of the driving component 15 is connected to the furnace cover 12. The driving component 15 is used to drive the furnace cover 12 to rotate around the axis of the furnace body 11. The telescopic rod of the driving component 162 is used to connect to the furnace cover support plate 161, and the driving component 162 is used to push the furnace cover support plate 161 to rotate around the rotating shaft, so that the furnace cover is separated from the furnace body 11. This cover opening assembly 16 can be used in a horizontal combustion chamber 1.

[0124] Furthermore, in this embodiment of the invention, the driving component 162 is specifically a cylinder, a hydraulic cylinder, or a linear motor.

[0125] Furthermore, in this embodiment of the present invention, the driving component 15 is preferably a rotary motor, which is used to drive the furnace cover 12 to rotate around the axis of the furnace body 11.

[0126] This utility model also provides a method for combustion analysis and measurement, including the following steps:

[0127] Place the sample of the preset weight on crucible 2, introduce oxygen into combustion chamber 1 through gas supply component until the gas pressure in combustion chamber 1 reaches the preset pressure value, and ignite the sample with igniter 3 until it is fully burned;

[0128] Specifically, a representative combustible sample is weighed and added to crucible 2. Combustion chamber 1 is closed, and oxygen is introduced into combustion chamber 1 through the gas supply component until the gas pressure in combustion chamber 1 reaches the preset pressure value. The sample is then ignited and burned through igniter 3 until the sample is fully burned.

[0129] The gas in the combustion chamber 1 is mixed evenly by the stirring component 17;

[0130] Specifically, after the sample is fully combusted, the stirring component 17 is turned on to make the gas in the combustion chamber 1 mix evenly. By increasing the flow of the gas in the combustion chamber 1 through the stirring component 17, the combustion efficiency of the sample can be improved and the gas after combustion can be mixed evenly.

[0131] Open the detection gas channel 6 and output the mixed gas at the preset pressure;

[0132] When the gas is mixed evenly, the detection gas passage 6 is opened, the mixed gas with a preset pressure is output, the pressure entering the test assembly 8 is controlled through the pressure controller 62, the stability of the flow control is improved, and the precision and accuracy of the detection and analysis results are ensured and improved.

[0133] The element content in the mixed gas is detected through the test assembly 8, a plurality of combustion compositions and component values can be tested through single combustion, in addition, the composition concentration of the mixed gas is directly tested, and the experimental data obtained has higher accuracy compared with the result of the nondestructive online testing method.

[0134] In the above method, as one of the specific embodiments, the oxygen is introduced into the combustion chamber 1 to the preset pressure value through the gas supply assembly in the combustion chamber 1 in the embodiment of the utility model, and the specific steps include the following steps: rapid oxygen charging of the combustion chamber 1.

[0135] When the pressure detector 43 detects that the gas pressure in the combustion chamber 1 approaches the preset pressure, the combustion chamber 1 is slowly filled with air until the gas pressure in the combustion chamber 1 reaches the preset pressure value.

[0136] The rapid oxygen charging of the combustion chamber 1 can open the first electromagnetic valve 441 or simultaneously open the first electromagnetic valve 441 and the second electromagnetic valve 444, so that the rapid oxygen charging of the combustion chamber 1 is realized. The slow air intake of the combustion chamber 1 can be realized by closing the first electromagnetic valve 441 and opening the second electromagnetic valve 444, controlling the air intake flow from the throttle valve 445, and realizing the slow air intake until the gas pressure in the combustion chamber 1 reaches the preset pressure value. In this way, the oxygen volume filled into the combustion chamber 1 before combustion is ensured to be consistent, so that the consistency of the concentration of the mixed gas after combustion is higher under the condition that the sample weight is the same, and the accuracy of the test is improved.

[0137] In the above method, as one of the specific embodiments, the method for combustion analysis measurement in the embodiment of the utility model, the element content in the mixed gas is detected through the test assembly 8, and then the following steps are included:

[0138] The exhaust passage 91 is opened to exhaust and depressurize the combustion chamber 1;

[0139] Specifically, the third electromagnetic valve 92 and the suction member 93 are opened to extract the gas in the combustion chamber 1, so that the gas in the combustion chamber 1 is quickly exhausted, and the residual tail gas after combustion is avoided, so that the result of the subsequent sample is not out of tolerance.

[0140] The mixed gas in the combustion chamber 1 is cleaned, and the crucible 2 is cleaned.

[0141] Specifically, the furnace cover and the stirring assembly 17 are opened, the mixed gas remaining in the combustion chamber 1 is cleaned, and the crucible 2 is cleaned for the next test.

[0142] Further, as one of the embodiments, the method for combustion analysis measurement in the embodiment of the utility model further comprises the following steps: purging the detection gas channel 6 and the test assembly 8 in the non-mixed gas detection process time period.

[0143] Specifically, the detection gas channel 6 and the test assembly 8 can be purged after the test assembly 8 is tested, or the detection gas channel 6 and the test assembly 8 can be purged before the test assembly 8 is tested. Preferably, the detection gas channel 6 and the test assembly 8 are purged before the test assembly 8 is tested.

[0144] Further, as one of the embodiments, the first air inlet channel 41, the exhaust channel 91 and the detection gas channel 6 can be branched from one air port, and the air inlet, the exhaust or the measurement is distinguished by the valve, or the first air inlet channel 41, the exhaust channel 91 and the detection gas channel 6 can be respectively connected to multiple air ports.

[0145] The above description of disclosed embodiments enables those skilled in the art to carry out or use the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model. Therefore, the utility model will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combustion analysis and measurement system, characterized in that, include: Combustion chamber (1), a crucible (2) for placing a sample is provided in the combustion chamber (1), and an igniter (3) is provided on the combustion chamber (1) for igniting the sample to generate combustion gas; A gas supply assembly for introducing oxygen into the combustion chamber (1); A detection gas channel (6) connected to the combustion chamber (1) for outputting mixed gas is provided on the detection gas channel for controlling the opening and closing of the gas path. Pressure controller (62) installed on the detection gas channel (6); A test component (8) is connected to the detection gas channel (6) and is used to receive the mixed gas. The test component (8) is used to detect the element content in the mixed gas.

2. The combustion analysis and measurement system according to claim 1, characterized in that, The test component (8) includes: A carbon infrared cell (81) for detecting the carbon content in the mixed gas. A sulfur infrared cell (82) for detecting the sulfur content in the mixed gas. A hydrogen infrared cell (83) for detecting the hydrogen content in the mixed gas. The carbon infrared cell (81), sulfur infrared cell (82), and hydrogen infrared cell (83) are connected in series or in parallel with the outlet of the detection gas channel (6).

3. The combustion analysis and measurement system according to claim 2, characterized in that, Also includes: A gas purifier (63) is installed on the detection gas channel (6), and the gas purifier (63) is located between the first switch (61) and the test component (8).

4. The combustion analysis and measurement system according to claim 3, characterized in that, The carbon infrared cell (81), the sulfur infrared cell (82), and the hydrogen infrared cell (83) are connected in series; in, The test component (8) is provided with a tail switch (85) at the gas outlet; or, the test component (8) further includes a flow controller (84), which is connected in series with the detection gas channel (6).

5. The combustion analysis and measurement system according to claim 3, characterized in that, The test component (8) includes: A first test branch and a second test branch are provided, wherein the first test branch and the second test branch are connected in parallel; in, A flow controller (84) is provided on the first test branch or a tail switch (85) is provided at the outlet of the first test branch. A flow controller (84) is provided on the second test branch or a tail switch (85) is provided at the outlet of the second test branch.

6. The combustion analysis and measurement system according to claim 2, characterized in that, Also includes: temperature control components (5); The temperature control component (5) is disposed outside the combustion chamber (1) and is used to maintain a constant temperature in the combustion chamber (1); or, The temperature control component (5) is disposed on the outside of the test component (8) and is used to maintain a constant temperature for the test component (8); or, The temperature control component (5) is located outside the test component (8) and the combustion chamber (1).

7. The combustion analysis and measurement system according to claim 2, characterized in that, Also includes: A test channel (7) for connecting the gas supply component and the detection gas channel (6) is provided, and the outlet of the test channel (7) is located between the first switch (61) and the test component (8). The second switch is installed on the test channel (7).

8. The combustion analysis and measurement system according to any one of claims 1 to 7, characterized in that, The gas supply assembly includes: A first air intake passage (41) connected to the combustion chamber (1); An oxygen source (42) connected to the air inlet of the first air intake channel (41); Pressure detector (43) used to detect the gas pressure in the combustion chamber (1); A pressure regulating component (44) is provided on the first air intake channel (41). The pressure regulating component (44) is connected to the pressure detector (43). The pressure regulating component (44) adjusts the air intake flow of the first air intake channel (41) according to the gas pressure of the combustion chamber (1) detected by the pressure detector (43).

9. The combustion analysis and measurement system according to claim 8, characterized in that, The pressure regulating assembly (44) includes: A first solenoid valve (441) is installed on the first air intake channel (41). A pressure regulator (442) is provided between the first solenoid valve (441) and the oxygen source (42). The second air intake passage (443) has an air inlet located between the pressure regulator (442) and the first solenoid valve (441), and an air outlet located between the first solenoid valve (441) and the combustion chamber (1). A second solenoid valve (444) is provided on the second air intake channel (443), and the second solenoid valve (444) is used to control the opening and closing of the second air intake channel (443); A throttle valve (445) is installed on the second intake passage (443) and connected in series with the second solenoid valve (444). The throttle valve (445) is used to control the gas flow rate on the second intake passage (443).

10. The combustion analysis and measurement system according to any one of claims 1 to 7 and 9, characterized in that, Also includes: An exhaust passage (91) connected to the combustion chamber (1); A third solenoid valve (92) is provided on the exhaust passage (91) for controlling the opening and closing of the exhaust passage (91). A suction element (93) connected to the outlet of the exhaust passage (91) for extracting gas from the combustion chamber (1).

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