Ash fusibility tester

Abstract

The utility model belongs to the technical field of testing equipment, and discloses an ash fusibility tester which comprises a reaction mechanism and a feeding mechanism, the reaction mechanism comprises a high-temperature furnace body, a furnace tube assembly and a heating assembly, a furnace body inner cavity and a feeding port communicated with the furnace body inner cavity are formed in the high-temperature furnace body, the furnace tube assembly is arranged in the furnace body inner cavity, the outer wall of the furnace tube assembly is in sealed connection with the inner wall of the furnace body inner cavity, and the heating assembly is arranged in the high-temperature furnace body; the heater is used for heating the furnace body inner cavity and the furnace tube assembly; the feeding mechanism is in sealed connection with the feeding hole of the furnace tube assembly and the feeding hole of the inner cavity of the furnace body, and the feeding mechanism is used for feeding a coal sample ash cone to be detected into the furnace tube assembly. The ash fusibility tester is simple in structure, good in sealing performance and high in overall stability and reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of testing equipment, in particular to an ash fusibility tester. Background Art

[0002] The ash fusion tester is an instrument used to detect the fusibility of the ash cone of a coal sample. The fusibility of the ash cone is directly related to whether the boiler of a power plant is sintered and the severity of the sintering, and has a great impact on the safe use of boilers and cement shaft kilns. In the current ash fusion tester, the coal sample ash cone is set on a support plate, and the support plate is fixed on a support cup. During the test, the support cup drives the support plate to rotate, so that the coal sample ash cone rotates in the constant temperature zone of the high-temperature furnace tube and heats up evenly until the coal sample ash cone reaches a molten state. In this process, the camera mechanism takes pictures in real time, and through computer or manual analysis, the temperatures of the four characteristic points of the coal sample, namely, deformation, softening, hemisphere and flow, are obtained.

[0003] Since the ash fusibility tester needs to ensure that a weak reducing atmosphere is formed around the ash cone during the experiment, the high-temperature furnace tube needs to maintain a certain degree of sealing. In the prior art, the structural design of the furnace tube assembly of the ash fusibility tester generally has two forms: split type or integrated type. During the test, the temperature inside the furnace is at least 1500°C. At this time, the split-design furnace tube assembly will crack and gap at the joint between the tubes due to high-temperature deformation and temperature differences, causing the furnace tube assembly to leak, resulting in experimental failure and deviation in test results; and the integrated furnace tube assembly has a complex processing technology, is difficult to process, and has high cost.

[0004] Therefore, there is an urgent need for an ash fusibility tester to solve the above problems. Utility Model Content

[0005] The utility model aims to provide an ash fusibility tester, which has a simple structure, good sealing performance, and high overall stability and reliability of the equipment.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Ash Fusibility Tester, including:

[0008] The reaction mechanism comprises a high-temperature furnace body, a furnace tube assembly and a heating assembly, wherein the high-temperature furnace body is provided with a furnace body inner cavity and a feeding port communicated with the furnace body inner cavity, the furnace tube assembly is arranged in the furnace body inner cavity, the outer wall of the furnace tube assembly is sealedly connected with the inner wall of the furnace body inner cavity, and the heating assembly is arranged in the high-temperature furnace body for heating the furnace body inner cavity and the furnace tube assembly;

[0009] A feeding mechanism is sealed and connected to the feeding port of the furnace tube assembly and the feeding port of the furnace body inner cavity, and the feeding mechanism is used to feed the ash cone of the coal sample to be tested into the furnace tube assembly.

[0010] Optionally, the furnace tube assembly includes a combustion tube, an imaging tube and a background tube. The side wall of the combustion tube is provided with a first mounting hole and a second mounting hole for docking and connecting with the imaging tube and the background tube respectively. The end of the imaging tube is embedded in the first mounting hole, and the end of the background tube is embedded in the second mounting hole.

[0011] Optionally, the middle axis of the image capturing tube is perpendicular to the middle axis of the combustion tube, and the middle axis of the background tube is perpendicular to the middle axis of the combustion tube.

[0012] Optionally, the high-temperature furnace body is further provided with an imaging channel and an installation cavity connected to the furnace body cavity, the imaging channel connects the furnace body cavity with the external space, the combustion tube is located in the furnace body cavity, the imaging tube is located in the imaging channel, and the background tube is located in the installation cavity;

[0013] The feeding port is provided at the bottom of the high-temperature furnace body, the feed port is provided at the bottom of the combustion tube, the bottom of the combustion tube is flush with the bottom of the high-temperature furnace body, and the feeding mechanism blocks the feeding port and the feed port;

[0014] A first sealing member is sandwiched between the inner wall of the imaging channel and the outer wall of the imaging tube, and a second sealing member is sandwiched between the inner wall of the mounting cavity and the outer wall of the background tube.

[0015] Optionally, a third sealing member for sealing the image capturing tube is provided in the image capturing tube.

[0016] Optionally, the feeding mechanism comprises a mounting plate, a supporting assembly and a feeding assembly, wherein the supporting assembly is arranged on the mounting plate and is used to place the coal sample ash cone, and the feeding assembly is transmission-connected to the mounting plate and can drive the mounting plate to move so as to drive the supporting assembly to extend from the feed port into the combustion tube;

[0017] The cross-sectional dimension of the mounting plate is larger than the cross-sectional dimension of the feed port, and the mounting plate can abut against the bottom wall of the high-temperature furnace body located around the feed port to block the feed port and the feed port.

[0018] Optionally, a fourth sealing member is provided on a side of the mounting plate facing the combustion tube, and the fourth sealing member is sandwiched between the mounting plate and the bottom wall of the high-temperature furnace body.

[0019] Optionally, a sealing material layer is filled between the furnace tube assembly and the inner cavity of the furnace body.

[0020] Optionally, a camera mechanism is also included, which is arranged on the side of the high-temperature furnace body and is used to take pictures and images of the coal sample ash cone in the furnace tube assembly.

[0021] Optionally, it further includes an air supply mechanism, which includes an air inlet pipe and an air outlet pipe, the air inlet pipe selectively connects the furnace tube assembly and a reaction gas source, and the air outlet pipe selectively connects the furnace tube assembly and an external space.

[0022] Beneficial effects of the utility model:

[0023] The ash fusibility tester provided by the utility model has a furnace tube assembly disposed in the furnace cavity. By sealingly connecting the outer wall of the furnace tube assembly with the inner wall of the furnace cavity, the furnace cavity seal is used to replace the furnace tube assembly seal, and the furnace tube assembly does not need to be strictly sealed, and an ideal test effect can be achieved. At the same time, since the high-temperature furnace body is relatively thick and is made of high-temperature resistant material, the high-temperature furnace body is not easy to crack, and the overall stability and reliability of the equipment are high. In addition, the high-temperature furnace body provides protection for the furnace tube assembly accordingly, which is conducive to saving test and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0025] Figure 1 It is a structural schematic diagram of an ash fusibility tester provided in the first embodiment of the utility model;

[0026] Figure 2 It is a structural schematic diagram of the ash fusibility tester provided in the second embodiment of the utility model.

[0027] In the figure:

[0028] 100, coal sample ash cone;

[0029] 1. reaction mechanism; 11. high temperature furnace body; 111. furnace body inner cavity; 12. furnace tube assembly; 121. combustion tube; 122. image acquisition tube; 123. background tube; 13. heating assembly; 14. first sealing member; 15. second sealing member; 16. third sealing member; 17. sealing material layer;

[0030] 2. Feeding mechanism; 21. Mounting plate; 22. Supporting assembly; 221. Ash cone bracket; 222. Graphite cup; 23. Feeding assembly; 24. Fourth sealing member;

[0031] 3. Camera mechanism;

[0032] 41. Inlet pipe; 42. Exit pipe;

[0033] 5. Temperature measuring mechanism. DETAILED DESCRIPTION

[0034] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0035] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0038] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0039] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0041] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] Embodiment 1

[0043] This embodiment provides an ash fusibility tester for detecting the fusibility of the ash cone of a coal sample. Figure 1 As shown, the ash fusibility tester includes a reaction mechanism 1 , a feeding mechanism 2 , a camera mechanism 3 and a temperature measuring mechanism 5 .

[0044] The reaction mechanism 1 includes a high-temperature furnace body 11, a furnace tube assembly 12 and a heating assembly 13. The high-temperature furnace body 11 is provided with a furnace body inner cavity 111 and a feeding port connected to the furnace body inner cavity 111. The furnace tube assembly 12 is arranged in the furnace body inner cavity 111, and the outer wall of the furnace tube assembly 12 is sealed and connected to the inner wall of the furnace body inner cavity 111. The heating assembly 13 is arranged in the high-temperature furnace body 11, and is used to heat the furnace body inner cavity 111 and the furnace tube assembly 12.

[0045] That is to say, the ash fusibility tester in this embodiment, by sealing the outer wall of the furnace tube assembly 12 and the inner wall of the furnace body inner cavity 111, replaces the seal of the furnace tube assembly 12 with the seal of the furnace body inner cavity 111, and does not need to strictly seal the furnace tube assembly 12, and can also achieve the ideal test effect. At the same time, since the high-temperature furnace body 11 is relatively thick and is made of high-temperature resistant material, the high-temperature furnace body 11 is not easy to crack, and the overall stability and reliability of the equipment are high. In addition, the high-temperature furnace body 11 provides protection for the furnace tube assembly 12 accordingly, which is conducive to saving test and maintenance costs.

[0046] Optionally, there are at least two heating assemblies 13 , and the two heating assemblies 13 are arranged oppositely on two sides of the furnace inner cavity 111 to heat the furnace inner cavity 111 and the furnace tube assembly 12 therein.

[0047] Preferably, in this embodiment, six heating assemblies 13 are provided. The six heating assemblies 13 are evenly arranged on both sides of the furnace inner cavity 111 to ensure that the furnace inner cavity 111 and the furnace tube assembly 12 are heated evenly.

[0048] Furthermore, the electric heater in the prior art can be selected as the heating component 13. After being powered on, the heating component 13 heats up rapidly, and through the effect of heat conduction, the temperature in the furnace cavity 111 is increased.

[0049] Continue to refer to Figure 1 The furnace tube assembly 12 includes a combustion tube 121, an imaging tube 122 and a background tube 123. The side wall of the combustion tube 121 is provided with a first mounting hole and a second mounting hole for docking and connecting with the imaging tube 122 and the background tube 123, respectively. The end of the imaging tube 122 is embedded in the first mounting hole, and the end of the background tube 123 is embedded in the second mounting hole. The combustion tube 121 is used to place the coal sample ash cone 100 to be detected, and the imaging tube 122 is used to cooperate with the camera mechanism 3 to shoot the sample image.

[0050] Specifically, the middle axis of the image-taking tube 122 is perpendicular to the middle axis of the combustion tube 121, and the middle axis of the background tube 123 is perpendicular to the middle axis of the combustion tube 121. The image-taking tube 122 and the background tube 123 are arranged opposite to each other. Since the temperature of the background tube 123 is lower than that of the combustion tube 121, the brightness of the background tube 123 is limited at low temperature, so that the background tube 123 forms a relatively dark background that is different from the coal sample ash cone 100 to be detected and the surrounding environment, so that the camera mechanism 3 can identify the coal sample ash cone 100 to be detected.

[0051] More specifically, the high-temperature furnace body 11 is further provided with an imaging channel and an installation cavity connected to the furnace body inner cavity 111. The imaging channel connects the furnace body inner cavity 111 with the external space, the combustion tube 121 is located in the furnace body inner cavity 111, the imaging tube 122 is located in the imaging channel, and the background tube 123 is located in the installation cavity. In order to form a relatively closed sealed space between the furnace body inner cavity 111 of the high-temperature furnace body 11 and the furnace tube assembly 12, a first sealing member 14 is sandwiched between the inner wall of the imaging channel and the outer wall of the imaging tube 122, and a second sealing member 15 is sandwiched between the inner wall of the installation cavity and the outer wall of the background tube 123. At the same time, a feeding port is provided at the bottom of the high-temperature furnace body 11, a feed port is provided at the bottom of the combustion tube 121, and the bottom of the combustion tube 121 is flush with the bottom of the high-temperature furnace body 11. That is to say, the feeding port and the feed port are opened on the same horizontal plane, and the feeding mechanism 2 can block the feed port while blocking the feed port, thereby ensuring the sealing of the bottom of the high-temperature furnace body 11 and the bottom of the furnace tube assembly 12.

[0052] In this embodiment, the first seal 14 and the second seal 15 are both annular sealing gaskets made of high-temperature resistant inorganic adhesive material, so as to ensure the sealing between the furnace body inner cavity 111 and the furnace tube assembly 12 in a high-temperature operating environment.

[0053] More specifically, a third sealing member 16 for sealing the image capturing tube 122 is provided in the image capturing tube 122. The third sealing member 16 can block the inner cavity of the image capturing tube 122 to ensure the sealing of the furnace tube assembly 12. In this embodiment, the third sealing member 16 is a light-transmitting plate. The image capturing tube 122 and the light-transmitting plate form a cavity with a certain degree of sealing, and at the same time, the light-transmitting plate can also facilitate the camera mechanism 3 to capture images. Preferably, the third sealing member 16 is a light-transmitting quartz plate.

[0054] It is understandable that in this embodiment, the camera mechanism 3 is disposed on the side of the high-temperature furnace body 11, facing the tube mouth of the image-taking tube 122, so as to take pictures of the coal sample ash cone 100 in the furnace tube assembly 12. The camera mechanism 3 is a prior art, and its structure and principle are not described in detail here.

[0055] Continue to refer to Figure 1 The feeding mechanism 2 is sealed and connected to the feeding port of the furnace tube assembly 12 and the feeding port of the furnace body inner cavity 111 . The feeding mechanism 2 is used to feed the coal sample ash cone 100 to be tested into the furnace tube assembly 12 .

[0056] Specifically, the feeding mechanism 2 includes a mounting plate 21, a supporting assembly 22 and a feeding assembly 23. The supporting assembly 22 is arranged on the mounting plate 21, and is used to place the coal sample ash cone 100. The feeding assembly 23 is transmission-connected to the mounting plate 21, and can drive the mounting plate 21 to move, so as to drive the supporting assembly 22 to extend from the feed port into the combustion tube 121. The cross-sectional dimension of the mounting plate 21 is larger than the cross-sectional dimension of the feed port. When the supporting assembly 22 extends into the designated position in the combustion tube 121, that is, the coal sample ash cone 100 is directly opposite to the tube mouth of the imaging tube 122, the mounting plate 21 can abut against the bottom wall of the high-temperature furnace body 11 located around the feed port, so as to simultaneously block the feed port and the feed port.

[0057] In this embodiment, the feeding assembly 23 includes a translation drive device, a rotation drive device and a lifting drive device. The output end of the feeding assembly 23 is connected to the mounting plate 21 to control the translation, rotation and lifting of the mounting plate 21, thereby feeding the coal sample ash cone 100 into a designated position in the combustion tube 121. Specifically, the translation drive device, the rotation drive device and the lifting drive device are all prior art, and will not be described in detail in this embodiment.

[0058] More specifically, a fourth sealing member 24 is provided on the side of the mounting plate 21 facing the combustion tube 121, and the fourth sealing member 24 is sandwiched between the mounting plate 21 and the bottom wall of the high-temperature furnace body 11. In this embodiment, the fourth sealing member 24 is a silicone sealing pad. The silicone sealing pad is annular and has an avoidance hole. The diameter of the avoidance hole is smaller than the diameter of the feed port at the bottom of the combustion tube 121, so that the feed port is blocked while the feed port is blocked, thereby ensuring the sealing of the bottom of the high-temperature furnace body 11 and the bottom of the furnace tube assembly 12.

[0059] More specifically, in this embodiment, the supporting assembly 22 includes an ash cone bracket 221 and a graphite cup 222. The ash cone bracket 221 is arranged on the mounting plate 21, and is used to support the coal sample ash cone 100. The graphite cup 222 is connected to the ash cone bracket 221, and is located below the coal sample ash cone 100, and can be used to place carbon materials such as graphite particles. Such an arrangement can facilitate technicians to perform ash fusibility testing of the coal sample ash cone 100 using the carbon sealing method.

[0060] Optionally, in this embodiment, the ash fusibility tester further includes an air supply mechanism. The air supply mechanism includes an air inlet pipe 41 and an air outlet pipe 42, wherein the air inlet pipe 41 selectively connects the furnace tube assembly 12 and the reaction gas source, and the air outlet pipe 42 selectively connects the furnace tube assembly 12 and the external space. When the technician uses the ventilation method to perform the ash fusibility test of the coal sample ash cone 100, a mixture of hydrogen and carbon dioxide, or a mixture of carbon monoxide and carbon dioxide is passed from the air inlet pipe 41 into the combustion tube 121; then, the coal sample ash cone 100 is heated, and its four characteristic melting temperatures can be observed.

[0061] That is to say, the ash fusibility tester provided in this embodiment can select one of the two test methods according to the needs to test the ash fusibility of the coal sample ash cone 100. If the ventilation method is used for testing, the air inlet pipe 41 is ventilated and the air outlet pipe 42 is exhausted; if the carbon sealing method is used for testing, the air inlet pipe 41 and the air outlet pipe 42 are sealed, and carbon materials such as graphite are placed in the graphite cup 222.

[0062] like Figure 1 As shown, the temperature measuring mechanism 5 is arranged in the high temperature furnace body 11, and is inserted into the combustion tube 121 through the tube wall of the combustion tube 121 to monitor the temperature change in the combustion tube 121. Further, the temperature measuring mechanism 5 is a thermocouple or a temperature sensor. The temperature measuring mechanism 5 is connected to the external controller through a cable to transmit the measured temperature information to the controller.

[0063] Embodiment 2

[0064] This embodiment provides an ash fusibility tester, which is basically the same as the ash fusibility tester provided in the first embodiment. The difference between this embodiment and the first embodiment is that in this embodiment, a sealing material layer 17 is filled between the furnace tube assembly 12 and the furnace body inner cavity 111.

[0065] That is to say, the ash fusibility tester provided in this embodiment is filled with sealing material between the outer wall surface of the furnace tube assembly 12 and the inner wall surface of the furnace body inner cavity 111 to form a sealing material layer 17, thereby ensuring the relative sealing of the space between the furnace body inner cavity 111 and the furnace tube assembly 12. In this embodiment, the filled sealing material can be selected as high temperature resistant and heat insulating ceramic fiber wool. Ceramic fiber is a highly efficient thermal insulation material with the characteristics of light weight, high strength, oxidation resistance, low thermal conductivity, good softness, corrosion resistance, small heat capacity and sound insulation.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Ash fusibility tester, characterized in that, include: A reaction mechanism (1) comprises a high-temperature furnace body (11), a furnace tube assembly (12) and a heating assembly (13); the high-temperature furnace body (11) is provided with a furnace body inner cavity (111) and a feeding port communicated with the furnace body inner cavity (111); the furnace tube assembly (12) is arranged in the furnace body inner cavity (111); the outer wall of the furnace tube assembly (12) is sealedly connected to the inner wall of the furnace body inner cavity (111); the heating assembly (13) is arranged in the high-temperature furnace body (11) and is used to heat the furnace body inner cavity (111) and the furnace tube assembly (12); A feeding mechanism (2) is sealedly connected to a feeding port of the furnace tube assembly (12) and a feeding port of the furnace body inner cavity (111), and the feeding mechanism (2) is used to feed the coal sample ash cone (100) to be tested into the furnace tube assembly (12).

2. The ash fusibility tester according to claim 1, characterized in that: The furnace tube assembly (12) comprises a combustion tube (121), an imaging tube (122) and a background tube (123); a first mounting hole and a second mounting hole are provided on a side wall of the combustion tube (121) for docking and communicating with the imaging tube (122) and the background tube (123), respectively; an end of the imaging tube (122) is embedded in the first mounting hole, and an end of the background tube (123) is embedded in the second mounting hole.

3. The ash fusibility tester according to claim 2, characterized in that: The middle axis of the image capturing tube (122) and the middle axis of the combustion tube (121) are perpendicular to each other, and the middle axis of the background tube (123) and the middle axis of the combustion tube (121) are perpendicular to each other.

4. The ash fusibility tester according to claim 2, characterized in that: The high-temperature furnace body (11) is further provided with an imaging channel and an installation cavity which are connected to the furnace body inner cavity (111); the imaging channel connects the furnace body inner cavity (111) with the external space; the combustion tube (121) is located in the furnace body inner cavity (111); the imaging tube (122) is located in the imaging channel; and the background tube (123) is located in the installation cavity; The feeding port is provided at the bottom of the high-temperature furnace body (11), the feed port is provided at the bottom of the combustion tube (121), the bottom of the combustion tube (121) is flush with the bottom of the high-temperature furnace body (11), and the feeding mechanism (2) blocks the feeding port and the feed port; A first sealing member (14) is sandwiched between the inner wall of the imaging channel and the outer wall of the imaging tube (122), and a second sealing member (15) is sandwiched between the inner wall of the installation cavity and the outer wall of the background tube (123).

5. The ash fusibility tester according to claim 4, characterized in that: A third sealing member (16) for sealing the image capturing tube (122) is provided inside the image capturing tube (122).

6. The ash fusibility tester according to claim 4, characterized in that: The feeding mechanism (2) comprises a mounting plate (21), a supporting assembly (22) and a feeding assembly (23); the supporting assembly (22) is arranged on the mounting plate (21) and is used to place the coal sample ash cone (100); the feeding assembly (23) is connected to the mounting plate (21) in a transmission manner and can drive the mounting plate (21) to move, so as to drive the supporting assembly (22) to extend from the feed port into the combustion tube (121); The cross-sectional dimension of the mounting plate (21) is greater than the cross-sectional dimension of the feed port, and the mounting plate (21) can abut against the bottom wall of the high-temperature furnace body (11) located around the feed port to seal the feed port and the feed port.

7. The ash fusibility tester according to claim 6, characterized in that: A fourth sealing member (24) is provided on the side of the mounting plate (21) facing the combustion tube (121), and the fourth sealing member (24) is sandwiched between the mounting plate (21) and the bottom wall of the high-temperature furnace body (11).

8. The ash fusibility tester according to claim 1, characterized in that: A sealing material layer (17) is filled between the furnace tube assembly (12) and the furnace body inner cavity (111).

9. The ash fusibility tester according to any one of claims 1 to 8, characterized in that: It also includes a camera mechanism (3), which is arranged on the side of the high-temperature furnace body (11) and is used to take pictures and images of the coal sample ash cone (100) in the furnace tube assembly (12).

10. The ash fusibility tester according to any one of claims 1 to 8, characterized in that: It also includes an air supply mechanism, the air supply mechanism including an air inlet pipe (41) and an air outlet pipe (42), the air inlet pipe (41) selectively connects the furnace tube assembly (12) and a reaction gas source, and the air outlet pipe (42) selectively connects the furnace tube assembly (12) and an external space.

Images