A wear-resistant thermal resistor for coal pulverizer gasifier

Abstract

The present invention discloses a wear-resistant thermal resistor for a gasification furnace of a coal pulverizer, which belongs to the field of thermal resistors and includes a protective tube, the surface of which is fixedly connected to the inner wall of a clamp, the lower surface of which is fixedly connected to the upper surface of a flange, and a ceramic column is clamped on the inner wall of the clamp. The wear-resistant thermal resistor for the gasification furnace of a coal pulverizer increases the wind speed of its gas compared to the ambient wind speed by providing a protective tube, a ceramic tube, a ceramic column, a flange and a booster head, and flows at the bottom end of the protective tube, which can provide a good protection effect on the protective tube, so that the airflow flows at the bottom end of the protective tube after being pressurized, forming a layer of wind curtain to block the airflow. This method realizes the combination of the wear resistance of the comprehensive ceramic and the thermal resistor, so that the thermal resistor can eliminate the impact kinetic energy of dust when it contacts the internal gas, and at the same time can maintain a protective area for forming an airflow barrier for the bottom end of the protective tube to avoid the impact of dust.

Description

Technical Field

[0001] The invention relates to the field of thermal resistors, in particular to a wear-resistant thermal resistor for a coal pulverizer gasifier. Background Art

[0002] Wear-resistant thermal resistors are high-tech special products that are ideal for high-temperature wear-resistant environments such as circulating fluidized bed boilers, boiling boilers, pulverized coal mill gasifiers, cement plant series kiln heads, kiln tails, furnace covers, and chemical, smelting, etc. Most of the pulverized coal mill gasifiers on the market use wear-resistant alloy protection tubes. Due to the difference in ambient temperature, the temperature control point is too high, the vibration is large, the blower wind speed is too high, and the wear is serious, making temperature measurement very difficult and the service life very short. The general wear-resistant alloy is only worn out and damaged in 10-90 days, burned and bent, and broken, causing damage to the thermal resistor, which brings great losses and unnecessary troubles to users. Summary of the invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a wear-resistant thermal resistor for a pulverized coal mill gasification furnace, which solves the problem that the thermal resistor temperature sensor currently used in the pulverized coal mill gasification furnace is protected by a wear-resistant alloy protection tube. However, ceramic materials with better wear resistance have a heat insulation effect and cannot be effectively used, so that the wear-resistant alloy needs to be replaced frequently.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a wear-resistant thermal resistor for a pulverizer gasification furnace, comprising a protection tube, the surface of the protection tube is fixedly connected to the inner wall of a clamp, the lower surface of the clamp is fixedly connected to the upper surface of a flange, a ceramic column is clamped on the inner wall of the clamp, an upper turntable is slidably connected to the surface of the ceramic column, the lower surface of the upper turntable is fixedly connected to the upper surface of a ceramic cylinder, the lower surface of the ceramic cylinder is fixedly connected to the upper surface of a lower turntable, a booster head is clamped on the inner wall of the lower turntable, the surface of the protection tube is fixedly connected to the lower surface of the inner wall of a junction box through a wiring seat, a cover is clamped on the surface of the junction box, an insulating tube is provided on the inner wall of the protection tube, a thermal resistor element is provided on the inner wall of the insulating tube, and a resistance blade is fixedly connected to the surface of the ceramic cylinder;

[0005] The inner wall of the ceramic cylinder is provided with an air collecting port, and the inner wall of the booster head is arranged in a trumpet shape.

[0006] As a preferred technical solution of the present invention, a sealing sheet is provided at the clamping position between the cover body and the junction box, and mounting screws are provided on the surface of the wiring seat.

[0007] As a preferred technical solution of the present invention, a terminal is provided at the top of the thermal resistance element, and the terminal is clamped on the inner wall of the protection tube.

[0008] As a preferred technical solution of the present invention, a shock-absorbing ring is sleeved on the surface of the insulating tube, and the surface of the shock-absorbing ring is clamped on the inner wall of the protective tube.

[0009] As a preferred technical solution of the present invention, the surface of the ceramic column is provided with convex ridges, and the upper turntable is located above the convex ridges.

[0010] As a preferred technical solution of the present invention, a wire outlet hole is provided on the surface of the junction box, and a sealing rubber is provided on the inner wall of the wire outlet hole.

[0011] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0012] The wear-resistant thermal resistor for the gasification furnace of the pulverizer is provided with a protection tube, a ceramic tube, a ceramic column, an upper turntable, a lower turntable, convex ridges, a flange and a booster head. When the flange is installed, when the high-speed gas flow carries the powder through the thermal resistor, the ceramic tube first undergoes a small angle correction under the action of the resistance blade, so that the air confluence position always remains facing the wind direction, and then a faster airflow is poured into the air confluence, and the mixed dust hits the surface of the ceramic tube and the ceramic column, and the dust is decelerated, and then the high-speed airflow is in the ceramic tube. The air flows downward under the convergence, and is converged by the booster head, so that the gas speed is increased compared to the ambient wind speed, and flows at the bottom of the protection tube, which can provide good protection for the protection tube, so that the airflow flows at the bottom of the protection tube after being pressurized, forming a layer of wind curtain to block the airflow. This method realizes the coordination of the wear resistance of the comprehensive ceramic and the thermal resistor, so that the thermal resistor can eliminate the impact kinetic energy of the dust when it comes into contact with the internal gas, and at the same time can maintain a protective area for the bottom of the protection tube to form an airflow barrier to avoid the impact of dust.

[0013] The wear-resistant thermal resistor for the gasification furnace of the pulverizer is provided with flanges, clamps, magnetic columns, convex ridges, upper turntable, lower turntable, booster head and ceramic columns. After a period of time in use, the flange is disassembled, and the ceramic column is detached from the inner wall of the clamp, and the ceramic column slides on the surface of the protective tube to be detached, and then checked. If necessary, it can be replaced. This method uses ceramics to double its wear resistance and can facilitate its inspection. The modular installation structure makes its replacement and maintenance faster and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of a three-dimensional cross-sectional structure of the present invention;

[0016] Figure 3 It is a schematic cross-sectional structure diagram of the present invention;

[0017] Figure 4 It is a structural schematic diagram of the ceramic cylinder of the present invention being exploded;

[0018] Among them: 1 protective tube, 2 flange, 3 clamp, 4 ceramic column, 5 upper turntable, 6 ceramic cylinder, 7 lower turntable, 8 booster head, 9 resistance blade, 10 air outlet, 11 shock absorbing ring, 12 insulating tube, 13 thermal resistor element, 14 terminal, 15 terminal block, 16 mounting screw, 17 terminal box, 18 cover, 19 sealing sheet, 20 wire outlet hole, 21 convex ridge. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, and purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments are conventional methods unless otherwise specified, and the materials and reagents used in the following embodiments are all commercially available unless otherwise specified. Example

[0020] like Figure 1-4 As shown, the present invention provides a wear-resistant thermal resistor for a pulverizer gasification furnace, comprising a protection tube 1, the surface of the protection tube 1 is fixedly connected to the inner wall of a clamp 3, the lower surface of the clamp 3 is fixedly connected to the upper surface of a flange 2, the inner wall of the clamp 3 is clamped with a ceramic column 4, the surface of the ceramic column 4 is slidably connected with an upper turntable 5, the lower surface of the upper turntable 5 is fixedly connected to the upper surface of a ceramic cylinder 6, the lower surface of the ceramic cylinder 6 is fixedly connected to the upper surface of a lower turntable 7, the inner wall of the lower turntable 7 is clamped with a booster head 8, the surface of the protection tube 1 is fixedly connected to the lower surface of the inner wall of a junction box 17 through a wiring seat 15, the surface of the junction box 17 is clamped with a cover body 18, the inner wall of the protection tube 1 is provided with an insulating tube 12, the inner wall of the insulating tube 12 is provided with a thermal resistor element 13, and the surface of the ceramic cylinder 6 is fixedly connected with a resistance blade 9.

[0021] In other embodiments, Figure 1 and Figure 3 As shown, a sealing sheet 19 is provided at the clamping position between the cover body 18 and the junction box 17, a mounting screw 16 is provided on the surface of the terminal seat 15, a terminal post 14 is provided on the top of the thermal resistor element 13, and the terminal post 14 is clamped on the inner wall of the protection tube 1, a wire outlet hole 20 is provided on the surface of the junction box 17, and a sealing rubber is provided on the inner wall of the wire outlet hole 20, an air conduit 10 is provided on the inner wall of the ceramic cylinder 6, and the inner wall of the boost head 8 is arranged in a trumpet shape.

[0022] By setting the sealing sheet 19, the sealing sheet 19 can maintain a good sealing effect of the cover body 18 when in use, making it more stable after installation; by setting the terminal block 15, the terminal block 15 can maintain a good fixation on the terminal post 14, and cooperate with the installation screws 16 to maintain a stable installation, which is convenient for wiring work; by setting the outlet hole 20, the outlet hole 20 can be used for routing and cooperate with the sealing rubber on the inner wall to fit the surface of the line, further improving the sealing effect; by setting the air confluence 10, the air confluence 10 can play a good effect of converging airflow; by setting the boost head 8, the boost head 8 can play a good effect of converging airflow and enhancing the flow speed when in use.

[0023] In other embodiments, Figure 2 and Figure 4 As shown, the surface of the insulating tube 12 is sleeved with a shock-absorbing collar 11, the surface of the shock-absorbing collar 11 is clamped on the inner wall of the protective tube, the surface of the ceramic column 4 is provided with a convex ridge 21, and the upper turntable 5 is located above the convex ridge 21.

[0024] By setting the shock-absorbing ring 11, the shock-absorbing ring 11 can keep the internal insulating tube 12 well fixed, so that the vibration can be eliminated through it, which has a certain damping effect and reduces the impact of vibration on it. By setting the convex ribs 21, the convex ribs 21 can maintain a good limit on the upper turntable 5, so that it can be kept at a suitable height position when rotating.

[0025] In the present invention, 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.

[0026] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wear-resistant thermal resistor for a coal pulverizer gasifier, comprising a protective tube (1), characterized in that: The surface of the protection tube (1) is fixedly connected to the inner wall of the clamp (3), the lower surface of the clamp (3) is fixedly connected to the upper surface of the flange (2), the inner wall of the clamp (3) is clamped with a ceramic column (4), the surface of the ceramic column (4) is slidably connected with an upper turntable (5), the lower surface of the upper turntable (5) is fixedly connected to the upper surface of the ceramic cylinder (6), the lower surface of the ceramic cylinder (6) is fixedly connected to the upper surface of the lower turntable (7), the inner wall of the lower turntable (7) is clamped with a booster head (8), the surface of the protection tube (1) is fixedly connected to the lower surface of the inner wall of the junction box (17) through a wiring seat (15), the surface of the junction box (17) is clamped with a cover body (18), the inner wall of the protection tube (1) is provided with an insulating tube (12), the inner wall of the insulating tube (12) is provided with a thermal resistance element (13), and the surface of the ceramic cylinder (6) is fixedly connected with a resistance blade (9); The inner wall of the ceramic cylinder (6) is provided with an air collection port (10), and the inner wall of the booster head (8) is arranged in a trumpet shape.

2. The wear-resistant thermal resistor for a coal pulverizer gasifier according to claim 1, characterized in that: A sealing sheet (19) is provided at the clamping position between the cover body (18) and the junction box (17), and a mounting screw (16) is provided on the surface of the junction seat (15).

3. The wear-resistant thermal resistor for a coal pulverizer gasifier according to claim 1, characterized in that: A terminal post (14) is provided at the top end of the thermal resistance element (13), and the terminal post (14) is clamped on the inner wall of the protection tube (1).

4. The wear-resistant thermal resistor for a coal pulverizer gasifier according to claim 1, characterized in that: A shock-absorbing collar (11) is sleeved on the surface of the insulating tube (12), and the surface of the shock-absorbing collar (11) is clamped on the inner wall of the protective tube.

5. The wear-resistant thermal resistor for a coal pulverizer gasifier according to claim 1, characterized in that: The surface of the ceramic column (4) is provided with convex ridges (21), and the upper turntable (5) is located above the convex ridges (21).

6. The wear-resistant thermal resistor for a coal pulverizer gasifier according to claim 1, characterized in that: A wire outlet hole (20) is provided on the surface of the junction box (17), and a sealing rubber is provided on the inner wall of the wire outlet hole (20).

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