A sample injection assembly, a dosing device and a high-temperature settling furnace

Abstract

The application discloses a sample feeding assembly, a feeding device and a high-temperature settling furnace. The sample feeding assembly comprises a sample feeding body, a plurality of sample feeding pipelines and a cooling structure. Each sample feeding pipeline is arranged in a corresponding through hole and penetrates the cavity, and is used for independently conveying different substances. The cooling structure is arranged at least partially in the sample feeding body. The cooling structure is arranged to be capable of conveying a cooling medium into the cavity, so as to cool the plurality of sample feeding pipelines. The sample feeding assembly can improve the controllability and accuracy of experiments.

Description

Technical Field

[0001] This application relates to the field of high-temperature reaction experimental equipment technology, and more specifically, to a sample injection component, a feeding device, and a high-temperature settling furnace. Background Technology

[0002] The sample feed assembly and high-temperature settling furnace reactor, as experimental devices for studying the pyrolysis and combustion behavior of solid particulate matter under high-temperature conditions, are widely used in the research of relevant properties of materials such as pulverized coal and mineral powder. The top of the high-temperature settling furnace reactor is connected to the sample feed assembly, which delivers the experimental material into the reactor to allow for a chemical reaction. To ensure the accuracy of the experimental results, the sample feed assembly must stably deliver the experimental material to the reactor while simultaneously preventing premature chemical reactions and deterioration of the material.

[0003] Existing feeding components typically use a straight-insertion metal tube or quartz tube directly inserted into the reactor of a high-temperature settling furnace. Before entering the reaction zone inside the furnace, the experimental material is subjected to excessive heat radiation or high-temperature gas flow, which can cause the experimental material to react prematurely. Furthermore, some of the high-temperature gas entering the feeding component will be diverted back, thus affecting the controllability of the experimental process and the accuracy of the experimental results. Utility Model Content

[0004] This application provides a sample injection component, a feeding device, and a high-temperature settling furnace. The sample injection component is equipped with a cooling structure, which can cool the substances transported in the sample injection pipe. Multiple sample injection pipes independently transport different substances, thereby preventing high-temperature gas from returning and preventing the experimental substances from reacting prematurely due to high temperatures, thus improving the controllability and accuracy of the experiment.

[0005] The technical solution of this application embodiment is as follows: A sample introduction assembly for a high-temperature settling furnace, the sample introduction assembly comprising: The sample injection body has a cavity and a cavity wall, and the cavity wall has multiple through holes that communicate with the cavity; Multiple injection pipes, each of which is respectively inserted through a corresponding through hole and penetrates the cavity, are used to independently transport different substances; A cooling structure, at least partially disposed in the sample inlet body, is configured to deliver a cooling medium into the cavity to cool the plurality of sample inlet pipes.

[0006] A feeding device, comprising: The sample introduction assembly as described in the above embodiments; and The reactor is provided with a reaction chamber, and the output end of the sample inlet pipe of the sample inlet assembly passes through the reaction chamber and communicates with the reaction chamber to deliver different substances to the reaction chamber.

[0007] A high-temperature settling furnace includes a feeding device as described in the above embodiments.

[0008] The technical advantages of the sample introduction component in this application embodiment are as follows: The sample introduction assembly of this application uses multiple sample introduction channels to independently deliver different substances. This facilitates control over the sample introduction process of different substances and avoids reactions between them. The sample introduction assembly of this application includes a cooling structure that delivers a cooling medium into the cavity of the sample introduction body, exchanging heat with the sample introduction channels to cool the substances flowing through them and ensure that the temperature of the substances in the sample introduction channels remains within a controllable range. The cooling structure also cools the sample introduction body, preventing high-temperature deformation and damage. This sample introduction assembly prevents substances entering the assembly from being affected by the heat radiation of the high-temperature settling furnace, thus preventing premature heating and reactions that could affect the accuracy of experimental results. Furthermore, this sample introduction assembly prevents heated gaseous substances entering the assembly from flowing back and being reversed, ensuring the controllability of the experimental process.

[0009] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the description and the accompanying drawings. Attached Figure Description

[0010] The accompanying drawings are used to provide a further understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0011] Figure 1 This is a schematic cross-sectional view of the sample introduction component according to an embodiment of this application; Figure 2 for Figure 1 A magnified structural diagram of part A; Figure 3 This is a cross-sectional structural schematic diagram of a feeding device according to an embodiment of this application; Figure 4 for Figure 3 A schematic diagram of the method structure of part B; Figure 5 This is a partial cross-sectional structural diagram of a reactor according to an embodiment of this application; Figure 6 This is a schematic cross-sectional view of a sealing element according to an embodiment of this application; Figure 7 This is a partial structural schematic diagram of a feeding device according to an embodiment of this application, viewed from one angle. Figure 8 This is a schematic diagram of the layout structure of a feeding device according to an embodiment of this application, viewed from another angle. Detailed Implementation

[0012] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be arbitrarily combined with each other.

[0013] Please refer to the instruction manual appendix. Figures 1 to 8 The diagram shows a schematic representation of the sample introduction assembly 100 and the feeding device 200 of an exemplary embodiment of this application. Figure 1 and Figure 2 As shown in the figure, this application provides a sample injection assembly 100 for a high-temperature settling furnace. The sample injection assembly includes a sample injection body 1, multiple sample injection pipes 2, and a cooling structure 3. The sample injection body 1 has a cavity 11 and a cavity wall 12, and the cavity wall 12 has multiple through holes 13 communicating with the cavity 11. Each sample injection pipe 2 passes through a corresponding through hole 13 and through the cavity 11, for independently conveying different substances. The cooling structure 3 is at least partially disposed in the sample injection body 1, and the cooling structure 3 is configured to deliver a cooling medium into the cavity 11 to cool the multiple sample injection pipes 2.

[0014] Specifically, the sample introduction assembly 100 of this application embodiment uses multiple sample introduction pipes 2 to independently transport different substances. This allows for precise control of the sample introduction process of different substances and avoids reactions between them. The sample introduction assembly 100 of this application embodiment is equipped with a cooling structure 3, which can deliver a cooling medium into the cavity 11 of the sample introduction body 1, exchanging heat with the sample introduction pipes 2 to cool the substances flowing through the sample introduction pipes 2, ensuring that the temperature of the substances in the sample introduction pipes 2 is within a controllable range. The cooling structure 3 can cool the sample introduction body 1, preventing high-temperature deformation and damage. The sample introduction assembly 100 of this application can prevent substances entering the sample introduction assembly 100 from being affected by the heat radiation of the high-temperature settling furnace, thus preventing premature heating and reactions that could affect the accuracy of experimental results. The sample introduction assembly 100 of this application can also prevent gaseous substances entering the sample introduction assembly 100 from being heated and flowing back, ensuring the controllability of the experimental process.

[0015] Understandable, such as Figure 3As shown, the sample introduction component 100 of this embodiment is connected to the end of the reactor 4 of the high-temperature settling furnace, and can deliver experimental materials to the reactor 4 of the high-temperature settling furnace so that the experimental materials can undergo a chemical reaction. The sample introduction component 100 of this application is applicable to different types of high-temperature settling experimental systems and has high versatility and practical value.

[0016] Optionally, the cooling structure 3 can form a cooling circulation system outside the multiple sample inlet pipes 2 to improve the heat exchange efficiency between the cooling structure 3 and the sample inlet pipes 2. The cooling structure 3 may include a pump, a cooling medium source, pipes, a cooling medium flow controller, a temperature controller, etc.

[0017] In one exemplary embodiment, such as Figure 1 and Figure 2 As shown, the multiple sample inlet pipes 2 include a fuel inlet pipe 21, a gas inlet pipe 22, and an auxiliary gas inlet pipe 23. The fuel inlet pipe 21 is used to transport solid fuel or powder samples, the gas inlet pipe 22 is used to transport air or gaseous fuel, and the auxiliary gas inlet pipe 23 is used to transport auxiliary gas.

[0018] Specifically, the fuel inlet pipe 21 is used to stably deliver powdered fuel or solid particulate materials into the reaction zone of the high-temperature settling furnace. The air inlet pipe 22 can use a staged air supply method to deliver an airflow to the reaction zone of the high-temperature settling furnace to regulate the combustion atmosphere, allowing the combustibles to burn further and completely. The auxiliary air inlet pipe 23 is a backup air inlet channel used to purge or regulate the atmosphere inside the furnace and prevent blockage and stagnation. Inert gas can be introduced into the auxiliary air inlet pipe 23 as needed to prevent premature fuel reaction.

[0019] In one exemplary embodiment, such as Figure 1 As shown, the input ends 21-1, 22-1, and 23-1 of the injection pipe 2 extend to the outside of the injection body 1 and are connected to a flow regulating valve or a mass flow meter.

[0020] Specifically, the input end 21-1 of the fuel inlet pipe 21, the input end 22-1 of the gas inlet pipe 22, and the input end 23-1 of the auxiliary gas inlet pipe 23 are all connected to flow regulating valves or mass flow meters. This allows for accurate control of the transport process and flow rate of various substances in each inlet pipe 2, ensuring that the ratio of fuel and combustion-supporting gas entering the high-temperature settling furnace is precise and stable.

[0021] In one exemplary embodiment, such as Figure 2 As shown, the cavity wall 12 includes a first end wall 121 and a second end wall 122 that are relatively distributed, and the sample inlet pipe 2 includes: The fixed sleeve 24 is fixed in the cavity 11. The through hole 13 includes a first through hole 131 and a second through hole 132 respectively provided in the first end wall 121 and the second end wall 122. The two ends of the fixed sleeve 24 are respectively connected to the first through hole 131 and the second through hole 132. The space 14 between the cavity wall 12 and the multiple fixed sleeves 24 contains the cooling medium.

[0022] The conveying pipe 25 is inserted through the fixed sleeve 24. Both ends of the conveying pipe 25 extend out of the cavity 11, and the conveying pipe 25 can slide relative to the fixed sleeve 24 along the axial direction of the fixed sleeve 24.

[0023] Specifically, the delivery pipe 25 of this application can slide relative to the fixed sleeve 24 along the axial direction of the fixed sleeve 24, so that the output end of the delivery pipe 25 can extend into different positions of the reactor 4 to deliver the experimental material to different positions of the reactor 4 and perform various experiments.

[0024] In one exemplary embodiment, such as Figure 1 and Figure 2 As shown, the cavity wall 12 includes a side wall 123, and the cooling structure 3 includes a cooling medium inlet 31 and a cooling medium outlet 32 ​​disposed on the side wall 123 and communicating with the cavity 11. The cooling medium inlet 31 allows the cooling medium to enter the cavity 11, and the cooling medium outlet 32 ​​allows the cooling medium in the cavity 11 to be discharged. Specifically, the cooling medium enters the cavity 11 from the cooling medium inlet 31, exchanges heat with multiple sample inlet pipes 2, and then flows out from the cooling medium outlet 32.

[0025] In one exemplary embodiment, such as Figure 1 As shown, the input ends 21-1, 22-1, and 23-1 of the sample inlet pipe 2 are equipped with pipe sealing joints 21-2, 22-2, and 23-2.

[0026] Specifically, the input end 21-1 of the fuel injection pipe 21 is provided with a sealing joint 21-2, the input end 22-1 of the gas injection pipe 22 is provided with a sealing joint 22-2, and the input end 23-1 of the auxiliary air intake pipe 23 is provided with a sealing joint 23-2. Each sealing joint can realize the sealed connection between each injection pipe 2 and the external pipe to prevent the substance from leaking at the joint position.

[0027] In one exemplary embodiment, such as Figure 1 and Figure 2 As shown, the cooling structure 3 includes a water-cooled jacket (not shown in the figure) disposed in the cavity 11, and the cooling medium is cooling water.

[0028] Specifically, the cooling medium in this application is not limited to water, but may also include other coolants or cooling gases, all of which are within the scope of protection of this application.

[0029] The working principle of the water-cooled jacket is to circulate water in the jacket to absorb the residual heat in the cavity 11, thereby reducing the temperature of the sample inlet pipe 2. The jacket is usually a pipe made of metal material, which is fitted over the outside of multiple sample inlet pipes 2 to isolate the material inside the sample inlet pipe 2 from the external heat source.

[0030] In one exemplary embodiment, such as Figure 1 As shown, along the height direction of the injection body 1 ( Figure 1 The bidirectional arrows in the diagram indicate the height direction of the injection body 1. The cooling medium inlet 31 is located above the cooling medium outlet 32, which is positioned near the top of the injection body 1.

[0031] Specifically, the cooling medium inlet 31 is located above the cooling medium outlet 32, and the cooling medium outlet 32 ​​is located near the top of the sample injection body 1. In this way, after the cooling medium enters the cavity 11, the upper surface of the cooling medium in the cavity 11 rises along the height direction of the sample injection body 1 until it reaches the top position of the sample injection body 1, and then flows out from the cooling medium outlet 32, so that the multiple sample injection pipes 2 in the cavity 11 of the sample injection body 1 are fully cooled.

[0032] This application provides a feeding device 200, such as... Figure 3 As shown, the device includes a sample introduction assembly 100 and a reactor 4 as described in any of the exemplary embodiments above. The reactor 4 is provided with a reaction chamber 41. The output ends 21-3, 22-3, and 23-3 of the sample introduction pipe 2 of the sample introduction assembly 100 are inserted into the reaction chamber 41 and communicate with the reaction chamber 41 to deliver different substances to the reaction chamber 41.

[0033] Specifically, the feeding device 200 of this application can be used as a feeding device for a high-temperature settling furnace.

[0034] The feeding device 200 of this application embodiment includes the injection component 100 as described in any of the above exemplary embodiments, and therefore has the structural features and advantages of the injection component 100 as described in any of the above exemplary embodiments, which will not be repeated here.

[0035] The feeding device 200 of this application embodiment can be adapted to reactors 4 of different types of high-temperature settling furnaces by changing the inner diameter of the sample inlet pipe 2, and can meet the control requirements of different particulate materials and different flow rates of gas.

[0036] The feeding device 200 of this application can also be used in conjunction with an automatic feeding control system to improve the automation level of the feeding device 200.

[0037] In one exemplary embodiment, such as Figure 3 and Figure 4As shown, the feeding device 200 of this application also includes a sealing connection assembly 5, and the injection assembly 100 and the reactor 4 are sealed together by the sealing connection assembly 5.

[0038] Specifically, the sealing connection component 5 reliably seals the connection between the injection component 100 and the reactor 4, ensuring the system safety and airtightness of the feeding device 200 under long-term high-temperature conditions, and preventing gas or material leakage from the feeding device 200.

[0039] In one exemplary embodiment, such as Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the sealing connection assembly 5 includes: The first flange 51 is sleeved and connected to the outer surface of the side wall 123 of the sample injection body 1. The first flange 51 includes a first flange portion 511. The second flange 52 is sleeved and connected to the outer surface of the side wall 42 of the reactor 4 and is located on the side of the reactor 4 facing the sample injection body 1. The second flange 52 includes a second flange portion 521. The sample injection body 1 is nested with the reactor 4 at the end near the reactor 4, and the first flange portion 511 and the second flange portion 521 abut against each other and are connected by fasteners (not shown in the figure).

[0040] Specifically, the side wall 42 of the reactor 4 can be fitted onto the outside of the side wall 123 of the sample injection body 1, and the first flange portion 511 and the second flange portion 521 abut against each other and are connected by fasteners. In this way, the sample injection assembly 100 and the reactor 4 can be easily disassembled and connected, and maintenance operations are simple.

[0041] In one exemplary embodiment, such as Figure 4 , Figure 5 , Figure 7 and Figure 8 As shown, the first flange 51 also includes a first annular protrusion 512 provided on the first flange portion 511 and extending toward the reactor 4 side; the first annular protrusion 512 is located radially outside the side wall 123 of the sample injection body 1 and is spaced apart from the side wall 123 of the sample injection body 1, so as to form a first annular groove 513 between the sample injection body 1 and the first annular protrusion 512, and the reactor 4 is inserted into the first annular groove 513 at the end of the side wall 42 of the sample injection body 1.

[0042] The reactor 4 has a second annular groove 43 with an opening facing the sample feeding body 1 on the outside of the side wall 42; the edge of the outer side wall 431 of the second annular groove 43 extends radially outward to form a second flange portion 521, the inner side wall 432 of the second annular groove 43 is the side wall 42 of the reactor 4, and the first annular protrusion 512 is inserted into the second annular groove 43.

[0043] Specifically, the reactor 4 is inserted into the first annular groove 513 at the end of the side wall 42 facing the sample injection body 1, and the first annular protrusion 512 is inserted into the second annular groove 43. The nested insertion structure makes the connection and sealing of the first flange 51 and the second flange 52 better.

[0044] Figure 4 This diagram shows a structural schematic of the first flange 51 and the second flange 52 connected together. Figure 7 and Figure 8 A schematic diagram of the structure is shown before the first flange 51 and the second flange 52 are assembled and connected.

[0045] In one exemplary embodiment, such as Figure 4 , Figure 6 As shown, the sealing connection assembly 5 also includes a sealing element 53, which is sandwiched between the first flange 51 and the second flange 52.

[0046] Specifically, a sealing element 53 is provided between the first flange 51 and the second flange 52, which can further improve the sealing performance of the sealing connection assembly 5 and prevent high-temperature gas leakage from the feeding device.

[0047] In one exemplary embodiment, such as Figure 4 As shown, the seal 53 is located in the second annular groove 43. When the first annular protrusion 512 is inserted into the second annular groove 43, the seal 53 is squeezed and can deform.

[0048] Specifically, the cooling structure 3 of the injection assembly 100 can cool the injection body 1, and at the same time cool the sealing connection assembly 5 composed of the first flange 51, the second flange 52 and the sealing element 53, ensuring that the temperature of the sealing element 53 is controllable, improving the service life of the sealing connection assembly 5, and preventing the sealing connection assembly 5 from being damaged by heat deformation.

[0049] After the material reaction experiment is completed, the feeding device 200 of this application can reduce the temperature of the sealing connection component 5 to a suitable temperature through the cooling structure 3 before disassembly or maintenance operations can be performed.

[0050] In one exemplary embodiment, such as Figure 4 and Figure 6 As shown, the sealing member 53 includes a ring-shaped limiting support member 531, and a first sealing ring 532 and a second sealing ring 533 connected to the two axial ends of the limiting support member 531.

[0051] Specifically, the limiting support 531 can be configured as a steel ring. The limiting support 531 can limit the range of movement of the first sealing ring 532 and the second sealing ring 533 after they are squeezed and deformed, and prevent the first sealing ring 532 and the second sealing ring 533 from running off course and moving around in the second annular groove 43 after being squeezed.

[0052] This application provides a high-temperature settling furnace, including a feeding device 200 as described in any of the exemplary embodiments above.

[0053] Specifically, the high-temperature settling furnace of this application embodiment includes the feeding device 200 as described in any of the above exemplary embodiments, and therefore has the structural features and advantages of the feeding device 200 as described in any of the above exemplary embodiments, which will not be repeated here.

[0054] In the description of this application, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0056] Although the embodiments disclosed in this application are as described above, the content described is merely for the purpose of understanding this application and is not intended to limit this application. Any person skilled in the art to which this application pertains may make any modifications and changes in the form and details of the implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application shall still be defined by the appended claims.

Claims

1. A sample introduction assembly for a high-temperature settling furnace, characterized in that, The injection assembly includes: The sample injection body has a cavity and a cavity wall, and the cavity wall has multiple through holes that communicate with the cavity; Multiple injection pipes, each of which is respectively inserted through a corresponding through hole and penetrates the cavity, are used to independently transport different substances; A cooling structure, at least partially disposed in the sample inlet body, is configured to deliver a cooling medium into the cavity to cool the plurality of sample inlet pipes.

2. The sample introduction assembly according to claim 1, characterized in that, The plurality of sample inlet pipes include a fuel inlet pipe, a gas-air inlet pipe, and an auxiliary gas inlet pipe. The fuel inlet pipe is used to deliver solid fuel or powder samples, the gas-air inlet pipe is used to deliver air or gaseous fuel, and the auxiliary gas inlet pipe is used to deliver auxiliary gas; and / or The input end of the injection pipe extends to the outside of the injection body and is connected to a flow regulating valve or a mass flow meter; and / or The cavity wall includes a first end wall and a second end wall that are distributed opposite to each other, and the sample inlet conduit includes: A fixed sleeve is fixed in the cavity. The through hole includes a first through hole and a second through hole respectively provided on the first end wall and the second end wall. The two ends of the fixed sleeve are respectively connected to the first through hole and the second through hole. The space between the cavity wall and the multiple fixed sleeves accommodates the cooling medium. A delivery pipe is inserted through the fixed sleeve, with both ends of the delivery pipe extending out of the cavity, and the delivery pipe is capable of sliding relative to the fixed sleeve along the axial direction of the fixed sleeve.

3. The sample introduction assembly according to claim 1, characterized in that, The cavity wall includes a sidewall, and the cooling structure includes a cooling medium inlet and a cooling medium outlet disposed on the sidewall and communicating with the cavity. The cooling medium inlet allows cooling medium to enter the cavity, and the cooling medium outlet allows cooling medium to exit the cavity; and / or... The inlet end of the sample inlet pipe is equipped with a pipe sealing joint; and / or, The cooling structure includes a water-cooled jacket disposed within the cavity, and the cooling medium is cooling water.

4. A feeding device, characterized in that, include: The sample introduction assembly as described in any one of claims 1 to 3; and The reactor is provided with a reaction chamber, and the output end of the sample inlet pipe of the sample inlet assembly passes through the reaction chamber and communicates with the reaction chamber to deliver different substances to the reaction chamber.

5. The feeding device according to claim 4, characterized in that, It also includes a sealing connection assembly, through which the sample injection assembly and the reactor are sealed together.

6. The feeding device according to claim 5, characterized in that, The sealing connection assembly includes: A first flange is sleeved and connected to the outer surface of the side wall of the sample injection body, and the first flange includes a first flange portion; The second flange is sleeved and connected to the outer surface of the side wall of the reactor and is located on the side of the reactor facing the sample inlet body. The second flange includes a second flange portion. The sample injection body is nested with the reactor at the end near the reactor, and the first flange portion and the second flange portion abut against each other and are connected by fasteners.

7. The feeding device according to claim 6, characterized in that, The first flange further includes a first annular protrusion disposed on the first flange portion and extending toward the reactor side; the first annular protrusion is located radially outward of the side wall of the injection body and is spaced apart from the side wall of the injection body to form a first annular groove between the injection body and the first annular protrusion, and the end of the reactor toward the side wall of the injection body is inserted into the first annular groove. The reactor has a second annular groove with an opening facing the sample inlet body on the outer side wall; the edge of the outer side wall of the second annular groove extends radially outward to form the second flange portion, the inner side wall of the second annular groove is the side wall of the reactor, and the first annular protrusion is inserted into the second annular groove.

8. The feeding device according to claim 6 or 7, characterized in that, The sealing connection assembly further includes a sealing element, which is sandwiched between the first flange and the second flange.

9. The feeding device according to claim 8, characterized in that, The sealing element includes a ring-shaped limiting support, and a first sealing ring and a second sealing ring connected to both axial ends of the limiting support.

10. A high-temperature settling furnace, characterized in that, Includes the feeding device as described in any one of claims 4 to 9.

Images