Thermal dilatometer for magnesia carbon brick production

Abstract

The utility model relates to the technical field of refractory material detection, and provides a thermal dilatometer for magnesia carbon brick production, which comprises a test box body and a heat insulation inner cavity, the heat insulation inner cavity is arranged in the test box body, a test tube is arranged in the test box body, a heating assembly is arranged in the test box body, and an installation observation assembly is arranged at the top of the test box body. The installation observation assembly comprises a pair of connecting frames, the surfaces of the connecting frames are slidably connected with moving frames, moving grooves are formed in the two sides of each moving frame, sealing sleeve frames are slidably connected into the moving grooves, and the two ends of each sealing sleeve frame are connected with locking blocks in a screwed mode through threads. The problems that in the prior art, when high-temperature thermal expansion of a refractory material is detected, real-time observation cannot be achieved, and when high-temperature thermal expansion of the refractory material is detected, an internal heating structure is slow in transmission, poor in sealing effect during installation and inconvenient to assemble and disassemble are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory material detection, and more specifically, to a thermal dilatometer for the production of magnesia-carbon bricks. Background Art

[0002] Magnesia-carbon bricks are unburned carbon composite refractory materials made of high-melting-point basic oxide magnesia (melting point 2800°C) and high-melting-point carbon materials that are difficult to be infiltrated by slag as raw materials, and various non-oxide additives are added. They are bonded with a carbonaceous binder.

[0003] During the production process of magnesia-carbon bricks, it is necessary to detect the thermal expansion of the materials. Therefore, thermal expansion equipment is required during the processing. Thermal expansion and contraction is a common phenomenon in nature and also a basic property of engineering materials. When detecting the high-temperature thermal expansion of refractory materials, the existing methods have the problems that it is impossible to see in real time, the internal heating structure transfers slowly, the sealing effect is poor during installation, and it is not convenient for loading and unloading.

[0004] Therefore, improvements are made to address the above problems. Content of the Utility Model

[0005] The utility model provides a thermal dilatometer for the production of magnesia-carbon bricks, which solves the problems in the related art that when detecting the high-temperature thermal expansion of refractory materials, it is impossible to see in real time, the internal heating structure transfers slowly, the sealing effect is poor during installation, and it is not convenient for loading and unloading.

[0006] The technical solution of the utility model is as follows: It includes

[0007] A test box body and a heat insulation inner cavity, and the heat insulation inner cavity is opened in the test box body;

[0008] A test tube and a heating component, the test tube is installed in the test box body, and the heating component is arranged in the test box body;

[0009] An installation and observation component, which is arranged on the top of the test box body. The installation and observation component includes a pair of connecting frames. A moving frame is slidably connected to the surface of the connecting frame. Moving grooves are opened in both sides of the moving frame. A sealing sleeve frame is slidably connected in the moving grooves. Both ends of the sealing sleeve frame are screwed and connected with locking blocks through threads.

[0010] As a further technical solution, an air cavity is opened inside the sealing sleeve frame. A through hole is opened at the top inside the air cavity. A moving rod is movably sleeved and connected in the air cavity and the through hole. The moving rod is hermetically fitted with the inner surface of the air cavity. A pressure spring is sleeved and connected to the outside of the moving rod.

[0011] As a further technical solution, an outer sleeve layer is provided on the outer surface of the sealing sleeve frame, an observation rod is provided at the top of the moving rod, the observation rod is movably sleeved in the outer sleeve layer, a scale is provided on the surface of the observation rod, a marking bump is provided on the upper end surface of the outer sleeve layer, and the sealing sleeve frame is hermetically sleeved and connected to the upper end of the test tube.

[0012] As a further technical solution, the heating assembly includes a pair of heat insulation seats, the heat insulation seats are arranged on both side surfaces in the heat insulation inner cavity, a heating pipe is installed on the side surface of the heat insulation seat, and a heat conduction block is arranged at the bottom of the heat insulation inner cavity.

[0013] As a further technical solution, connection grooves are formed on both sides of the heat conduction block, the connection grooves are sleeved and connected with the heating pipes, a slot is formed at the top of the heat conduction block, and the slot is fitted and inserted with the test tube.

[0014] As a further technical solution, the opening part at the top of the test box body is of a circular structure, a heat insulation gasket is installed in the opening at the top of the test box body, and the heat insulation gasket is hermetically sleeved and connected with the surface of the test tube.

[0015] As a further technical solution, one end of the locking block is of a polygonal structure, and the side surface of the locking block is attached to the outer surface of the moving frame.

[0016] As a further technical solution, the moving frame is integrally of a portal structure, and the sealing sleeve frame is located inside the moving frame.

[0017] The working principle and beneficial effects of the present utility model are as follows:

[0018] In the present utility model, an installation and observation assembly is provided. Through the interaction of structures such as the moving frame, the sealing sleeve frame, the locking block, the air cavity, the moving rod, the pressure spring, the observation rod, the scale, and the marking bump, the sealing sleeve frame can cover the top of the test tube to completely seal the test tube. When it expands inside, the moving rod and the pressure spring will be extruded outward by the expansion pressure and extend out. The extended length can be displayed by the cooperation of the scale and the marking bump, and the expansion situation can be directly observed with the naked eye, having good test effects and practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is an axonometric drawing of the present utility model;

[0022] Figure 3 is a cross-sectional view of the present utility model;

[0023] Figure 4 This is a partial enlarged view of part A in the utility model Figure 3 in the attached figure;

[0024] In the figure: 1. Test box; 2. Heat insulation inner cavity; 3. Test tube; 4. Installation and observation component; 4-1. Connecting frame; 4-2. Moving frame; 4-3. Moving groove; 4-4. Sealing sleeve frame; 4-5. Locking block; 4-6. Air cavity; 4-7. Through hole; 4-8. Moving rod; 4-9. Pressure spring; 4-10. Outer coating; 4-11. Observation rod; 4-12. Scale; 4-13. Marking convex block; 5. Heating component; 5-1. Heat insulation base; 5-2. Heating tube; 5-3. Heat conducting block; 5-4. Connecting groove; 5-5. Slot; 6. Heat insulation gasket. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts fall within the scope of protection of the present utility model.

[0026] As Figures 1 to 4 shown, this embodiment proposes a thermal dilatometer for producing magnesia-carbon bricks, including

[0027] a test box 1 and a heat insulation inner cavity 2, and the heat insulation inner cavity 2 is opened in the test box 1;

[0028] a test tube 3 and a heating component 5, the test tube 3 is installed in the test box 1, and the heating component 5 is arranged in the test box 1;

[0029] Install the observation component 4. The installation observation component 4 is arranged on the top of the test box body 1. The installation observation component 4 includes a pair of connecting frames 4-1. A moving frame 4-2 is slidably connected to the surface of the connecting frame 4-1. Moving grooves 4-3 are opened on both sides inside the moving frame 4-2. A sealing sleeve frame 4-4 is slidably connected in the moving groove 4-3. Locking blocks 4-5 are screwed and connected to both ends of the sealing sleeve frame 4-4 through threads. An air cavity 4-6 is opened inside the sealing sleeve frame 4-4. A through hole 4-7 is opened at the top inside the air cavity 4-6. A moving rod 4-8 is movably sleeved and connected in the air cavity 4-6 and the through hole 4-7. The moving rod 4-8 is hermetically attached to the inner surface of the air cavity 4-6. A pressure spring 4-9 is sleeved outside the moving rod 4-8. An outer coating 4-10 is arranged on the outer surface of the sealing sleeve frame 4-4. An observation rod 4-11 is arranged at the top of the moving rod 4-8. The observation rod 4-11 is movably sleeved inside the outer coating 4-10. A scale 4-12 is arranged on the surface of the observation rod 4-11. A marking convex block 4-13 is arranged on the upper end surface of the outer coating 4-10. The sealing sleeve frame 4-4 is hermetically sleeved and connected to the upper end of the test tube 3.

[0030] In this embodiment, in order to achieve the sealed installation of the test tube 3 and observe the effect of expansion change during the process, the installation observation component 4 is designed. Two connecting frames 4-1 are arranged on the top of the test box body 1. A moving frame 4-2 is slidably connected to the connecting frame 4-1. Moving grooves 4-3 with a vertical structure are opened on both sides of the moving frame 4-2. A sealing sleeve frame 4-4 is movably sleeved and connected inside. Locking blocks 4-5 are screwed and connected to both outer ends of the sealing sleeve frame 4-4 through threads for fixing the sealing sleeve frame 4-4. The sealing sleeve frame 4-4 can be sleeved on the top of the test tube 3. An air cavity 4-6 is arranged inside the sealing sleeve frame 4-4 and a through hole 4-7 is opened at the top. A moving rod 4-8 is installed inside the air cavity 4-6. A pressure spring 4-9 is sleeved on the moving rod 4-8. When the material in the test tube 3 expands, the expansion will push the moving rod 4-8. The moving rod 4-8 moves upward and will compress the pressure spring 4-9. An outer coating 4-10 is arranged on the outer surface of the sealing sleeve frame 4-4. An observation rod 4-11 is arranged at the top of the moving rod 4-8. The observation rod 4-11 is movably sleeved in the outer coating 4-10. A scale 4-12 is opened on the surface of the observation rod 4-11. A marking convex block 4-13 is arranged at the top of the outer coating 4-10. The expansion value can be observed by the cooperation of the scale 4-12 and the marking convex block 4-13.

[0031] Furthermore, the heating component 5 includes a pair of heat insulation seats 5-1. The heat insulation seats 5-1 are arranged on both side surfaces inside the heat insulation inner cavity 2. A heating pipe 5-2 is installed on the side surface of the heat insulation seat 5-1. A heat conduction block 5-3 is arranged at the bottom inside the heat insulation inner cavity 2. Connecting grooves 5-4 are opened on both sides of the heat conduction block 5-3. The connecting grooves 5-4 are sleeved and connected to the heating pipe 5-2. A slot 5-5 is opened at the top of the heat conduction block 5-3. The slot is fitted and inserted with the test tube 3 in a fitting manner.

[0032] In this embodiment, in order to quickly heat the test tube 3 to achieve the effect of expansion testing, a heating component 5 is designed. Two heat insulation seats 5-1 are arranged inside the heat insulation inner cavity 2. A heating tube 5-2 is installed on the heat insulation seat 5-1. A heat conduction block 5-3 is arranged at the bottom inside the heat insulation inner cavity 2. A slot 5-5 is opened at the top of the heat conduction block 5-3 for insertion and connection with the test tube 3. Connection grooves 5-4 are opened on both sides, and the connection grooves 5-4 are sleeved and connected with the heating tube 5-2. The heating tube 5-2 can heat the heat conduction block 5-3 to the same temperature, and quickly heat the test tube 3 wrapped inside for expansion testing.

[0033] Furthermore, the opening part at the top of the test box 1 is of a circular structure. A heat insulation gasket 6 is installed inside the opening at the top of the test box 1. The heat insulation gasket 6 is hermetically sleeved and connected with the surface of the test tube 3.

[0034] In this embodiment, through the circular opening structure, the heat insulation gasket 6 is installed inside, so that the installed test tube 3 can be completely sealed and fitted with the test box 1, and the heat cannot escape.

[0035] Furthermore, one end of the locking block 4-5 is of a polygonal structure, and the side surface of the locking block 4-5 is attached to the outer surface of the moving frame 4-2.

[0036] In this embodiment, through the polygonal structure, it is convenient to manually operate and tighten the locking block 4-5. The locking block 4-5 can be firmly attached to the surface of the moving frame 4-2, and can firmly fix the sealing sleeve frame 4-4.

[0037] Furthermore, the overall shape of the moving frame 4-2 is a portal structure, and the sealing sleeve frame 4-4 is located inside the moving frame 4-2.

[0038] In this embodiment, through the portal structure, both ends at the bottom are connected to the connecting frame 4-1, and the sealing sleeve frame 4-4 is vertically sleeved inside the moving frame 4-2, making the overall structure more complete.

[0039] When testing is required, put the material into the test tube 3, vertically insert it at the heat insulation gasket 6 until it is completely connected to the slot 5-5 of the heat conduction block 5-3. Push the moving frame 4-2 to move the sealing sleeve frame 4-4 to directly above the test tube 3. Push the sealing sleeve frame 4-4 downward. The sealing sleeve frame 4-4 is sleeved on the top of the test tube 3 and pressed firmly. While pressing, turn the locking block 4-5 to fix between the sealing sleeve frame 4-4 and the moving frame 4-2. Then start the heating tube 5-2 to heat the heat conduction block 5-3. The heat is transferred to the test tube 3 to conduct expansion testing on the internal material. The moving rod 4-8 extends upward through pressure expansion and cooperates with the compression of the pressure spring 4-9. Observe the positions of the scale 4-12 and the marking convex block 4-13 during the process, and determine the expansion value according to the scale 4-12.

[0040] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A thermal expansion instrument for magnesia carbon brick production, characterized in that: include A test box (1) and a heat-insulating inner cavity (2), wherein the heat-insulating inner cavity (2) is disposed in the test box (1); A test tube (3) and a heating component (5), wherein the test tube (3) is installed in the test box (1), and the heating component (5) is arranged in the test box (1); An observation assembly (4) is installed, the observation assembly (4) being arranged on the top of the test box (1), the observation assembly (4) comprising a pair of connecting frames (4-1), the connecting frames (4-1) being slidably connected to a moving frame (4-2) on the surface, moving grooves (4-3) being provided on both sides of the moving frame (4-2), a sealing sleeve frame (4-4) being slidably connected in the moving grooves (4-3), and locking blocks (4-5) being screwed together at both ends of the sealing sleeve frame (4-4) by means of threads.

2. A thermal expansion instrument for magnesia carbon brick production according to claim 1, characterized in that: An air cavity (4-6) is provided inside the sealing sleeve frame (4-4), a through hole (4-7) is provided at the top of the air cavity (4-6), a moving rod (4-8) is movably connected to the air cavity (4-6) and the through hole (4-7), the moving rod (4-8) is sealingly fitted to the inner surface of the air cavity (4-6), and a pressure spring (4-9) is connected to the outside of the moving rod (4-8).

3. A thermal expansion instrument for magnesia carbon brick production according to claim 2, characterized in that: The outer surface of the sealing sleeve frame (4-4) is provided with an outer jacket layer (4-10), the top of the moving rod (4-8) is provided with an observation rod (4-11), the observation rod (4-11) is movably sleeved in the outer jacket layer (4-10), the surface of the observation rod (4-11) is provided with a scale (4-12), the upper end surface of the outer jacket layer (4-10) is provided with an identification protrusion (4-13), and the sealing sleeve frame (4-4) is sealingly sleeved and connected to the upper end of the test tube (3).

4. A thermal expansion instrument for magnesia carbon brick production according to claim 1, characterized in that: The heating assembly (5) comprises a pair of heat-insulating seats (5-1), the heat-insulating seats (5-1) being arranged on the inner side surfaces of the heat-insulating inner cavity (2), the side surfaces of the heat-insulating seats (5-1) being provided with heating tubes (5-2), and the bottom of the heat-insulating inner cavity (2) being provided with a heat-conducting block (5-3).

5. A thermal expansion instrument for magnesia carbon brick production according to claim 4, characterized in that: Both sides of the heat-conducting block (5-3) are provided with connection grooves (5-4), the connection grooves (5-4) are sleeve-connected to the heating tube (5-2), and the top of the heat-conducting block (5-3) is provided with a slot (5-5), the slot (5-5) is fitted and plug-connected to the test tube (3).

6. A thermal expansion instrument for magnesia carbon brick production according to claim 1, characterized in that: The top opening of the test box (1) is a circular structure. A heat insulating gasket (6) is installed in the top opening of the test box (1). The heat insulating gasket (6) is connected to the surface of the test tube (3) in a sealing sleeve.

7. A thermal expansion instrument for magnesia carbon brick production according to claim 1, characterized in that: One end of the locking block (4-5) is a polygonal structure, and the side surface of the locking block (4-5) is attached to the outer surface of the moving frame (4-2).

8. A thermal expansion instrument for producing magnesia carbon bricks according to claim 1, characterized in that: The movable frame (4-2) is in a door-shaped structure as a whole, and the sealing sleeve frame (4-4) is located inside the movable frame (4-2).

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