A protective device for a cooling wall temperature sensor above a taphole

Abstract

The utility model discloses a protective device for a cooling wall temperature sensor above the iron mouth, which belongs to the technical field of temperature sensor protection, and solves the problem that the existing blast furnace cooling wall temperature sensor is easily damaged during the maintenance process. It includes a plurality of support tubes, and the plurality of support tubes are evenly distributed between the tuyere platform and the temperature sensor, and one end of each support tube is fixedly connected to the furnace shell, and the other end is fixedly connected to the tuyere platform; a cooling water tank is provided above the temperature sensor, and the top of the cooling water tank is fitted with the support tube, and the cooling water tank is detachably connected to the tuyere platform, and an inlet pipe is provided at one end of the cooling water tank close to the furnace shell, and an outlet pipe is provided at one end of the cooling water tank away from the furnace shell. The protective device of the utility model can reinforce the fan-shaped steel plate and the tuyere platform, protect the temperature sensor from being damaged, and improve the safety of the maintenance operation.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature sensor protection, and more specifically, to a protection device for a temperature sensor of a cooling wall above a taphole. Background Art

[0002] Blast furnace cooling is closely related to the life of the blast furnace. When the blast furnace is in normal production, the operator must timely and accurately grasp the heat flow intensity of each part of the blast furnace to ensure the normal production of the blast furnace for safety and longevity. Therefore, installing temperature sensors on the cooling wall water pipes can timely and accurately transmit the water temperature difference data to the foreman's operation room, so as to monitor the abnormal conditions of the cooling equipment in real time. However, due to the structure of the iron mouth area, such as Figure 1 As shown, in the existing blast furnace, the temperature sensor 1 installed in the three-joint four-section joint pipe can only be installed directly above the iron mouth 2. In this area, a 14mm thick fan-shaped steel plate 5 is laid between the tuyere platform 3 and the furnace shell 4 around the furnace shell 4. Because the supporting point of the fan-shaped steel plate 5 is not firm enough, when the blast furnace is overhauled and the tuyere is replaced or the spare parts of the cooling wall water pipe instrument are maintained on a daily basis, the fan-shaped steel plate is easily caused to fall off and damage the temperature sensor, affecting safe production.

[0003] Therefore, it is urgent to design a protective device for the cooling wall temperature sensor above the iron mouth to solve the above-mentioned technical problems. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a protective device for the cooling wall temperature sensor above the iron mouth in view of the above-mentioned deficiencies in the prior art, which can reinforce the fan-shaped steel plate and the tuyere platform, protect the temperature sensor from being damaged, and improve the safety of maintenance operations.

[0005] The technical solution of the utility model is as follows: a protective device for a cooling wall temperature sensor above an iron mouth, comprising a plurality of support tubes, the plurality of support tubes being evenly distributed between a tuyere platform and a temperature sensor, and one end of each of the support tubes being fixedly connected to a furnace shell, and the other end being fixedly connected to the tuyere platform; a cooling water tank is provided above the temperature sensor, the top of the cooling water tank is fitted with the support tube, and the cooling water tank is detachably connected to the tuyere platform, an end of the cooling water tank close to the furnace shell is provided with a water inlet pipe, and an end of the cooling water tank away from the furnace shell is provided with a water outlet pipe.

[0006] As a further improvement, the other end of the support tube extends to the bottom of the tuyere platform, and the end surface of the other end of the support tube is flush with the end surface of the tuyere platform.

[0007] Furthermore, one end of the support tube is fixed to the furnace shell by welding, and the other end is fixed to the tuyere platform by welding.

[0008] Furthermore, the top-view cross-section of the cooling water tank is a fan-shaped structure, and the top-view cross-sectional area of ​​the cooling water tank is larger than the area of ​​the iron mouth.

[0009] Furthermore, one end of the cooling water tank is in contact with the furnace shell, and the other end face is flush with the end face of the tuyere platform.

[0010] Furthermore, a connecting plate vertically arranged therewith is welded to the other end of the cooling water tank, and the connecting plate is connected to the air outlet platform by fastening screws.

[0011] Furthermore, a support block is welded on the furnace shell above the temperature sensor, and the bottom of one end of the cooling water tank is in contact with the support block.

[0012] Beneficial Effects

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] 1. The protective device of the utility model connects the furnace shell with the tuyere platform by arranging multiple supporting pipes under the fan-shaped steel plate, so as to reinforce the fan-shaped steel plate and the tuyere platform, reduce the risk of the fan-shaped steel plate and the tuyere platform falling off during the maintenance process, effectively protect the temperature sensor from being damaged, and improve the safety of the maintenance operation.

[0015] 2. The protective device of the utility model has the problem that, since the temperature is high when molten iron is discharged from the iron mouth, the welding places of the support pipe, the fan-shaped steel plate and the furnace shell above the iron mouth are easily affected by the high temperature and deformed or even fall off. Therefore, a cooling water tank is arranged above the iron mouth, and the cooling water tank isolates the iron mouth from the corresponding support pipe and the fan-shaped steel plate above it. The cooling circulating water in the cooling water tank is used to take away part of the heat, thereby reducing the risk of deformation and falling off of the welding places of the support pipe, the fan-shaped steel plate and the furnace shell, further improving the connection strength of the support pipe and the fan-shaped steel plate, and further helping to protect the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the main structure of the prior art;

[0017] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0018] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0019] Figure 4 It is a partial bottom view structural schematic diagram of the utility model.

[0020] Among them: 1-temperature sensor, 2-iron mouth, 3-tuyere platform, 4-furnace shell, 5-fan-shaped steel plate, 6-support pipe, 7-cooling water tank, 8-water inlet pipe, 9-water outlet pipe, 10-connecting plate, 11-fastening screws, 12-support block. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0022] See also Figure 2-4 The utility model provides a protective device for a cooling wall temperature sensor above an iron mouth, comprising a plurality of support tubes 6, the plurality of support tubes 6 are evenly distributed between a tuyere platform 3 and a temperature sensor 1, and one end of each support tube 6 is fixedly connected to a furnace shell 4, and the other end is fixedly connected to a tuyere platform 3, so as to support the tuyere platform 3 and a fan-shaped steel plate 5.

[0023] The protective device of the utility model connects the furnace shell 4 with the tuyere platform 3 by arranging multiple supporting tubes 6 under the fan-shaped steel plate 5, so as to reinforce the fan-shaped steel plate 5 and the tuyere platform 3, reduce the risk of the fan-shaped steel plate 5 and the tuyere platform 3 falling off during the maintenance process, effectively protect the temperature sensor 1 from being damaged, and improve the safety of the maintenance operation.

[0024] Preferably, a cooling water tank 7 is provided above the temperature sensor 1. The top of the cooling water tank 7 is in contact with the support tube 6 to isolate the heat of the iron mouth 2. It can also support the support tube 6 and the tuyere platform 3. The cooling water tank 7 is detachably connected to the tuyere platform 3, which is convenient for disassembly and maintenance. An inlet pipe 8 is provided at one end of the cooling water tank 7 close to the furnace shell 4. The inlet pipe 8 is connected to an external cooling water pipe. An outlet pipe 9 is provided at one end of the cooling water tank 7 away from the furnace shell 4 to facilitate the discharge of water, thereby forming a cooling water circulation pipeline. The inlet pipe 8 is arranged close to one side of the furnace shell 4, so that the cooling water that comes in at the beginning can first contact the hottest area directly above the iron mouth 2, and the cooling effect is better.

[0025] The protective device of this embodiment has the problem that, since the temperature is high when molten iron is discharged from the iron mouth 2, the welding places of the support tube 6, the fan-shaped steel plate 5 and the furnace shell 4 above the iron mouth 2 are easily affected by the high temperature and deformed or even fall off. Therefore, a cooling water tank 7 is arranged above the iron mouth 2 to isolate the iron mouth 2 from the corresponding support tube 6 and fan-shaped steel plate 5 above it, and the cooling circulating water in the cooling water tank 7 is used to take away part of the heat, thereby reducing the risk of deformation and falling off of the welding places of the support tube, the fan-shaped steel plate and the furnace shell, further improving the connection strength of the support tube and the fan-shaped steel plate, and further helping to protect the temperature sensor.

[0026] Preferably, the other end of the support tube 6 extends to the bottom of the tuyere platform 3 , and the end surface of the other end of the support tube 6 is flush with the end surface of the tuyere platform 3 , further enhancing the firmness of the tuyere platform 3 .

[0027] Preferably, one end of the support tube 6 is fixed to the furnace shell 4 by welding, and the other end is fixed to the tuyere platform 3 by welding. The support tube 6 can be welded and fixed between the existing furnace shells 4, which is very convenient for improvement.

[0028] Preferably, the top-view cross-section of the cooling water tank 7 is a fan-shaped structure, and the top-view cross-sectional area of ​​the cooling water tank 7 is larger than the area of ​​the iron mouth 2, so that the iron mouth 2 can be covered for better heat insulation and heat dissipation.

[0029] Preferably, one end of the cooling water tank 7 is in contact with the furnace shell 4, and the other end face is flush with the end face of the tuyere platform 3, thereby increasing the area of ​​the cooling water tank 7 and further improving the heat insulation and heat dissipation effects.

[0030] Preferably, a connecting plate 10 arranged perpendicularly thereto is welded to the other end of the cooling water tank 7, the connecting plate 10 extends to the end face of the tuyere platform 3, and the connecting plate 10 is connected to the tuyere platform 3 by means of fastening screws 11, and the cooling water tank 7 is fixed to the tuyere platform 3 by means of fastening screws 11, so as to achieve quick disassembly and maintenance. Furthermore, a supporting block 12 is welded to the furnace shell 4 above the temperature sensor 1, and the bottom of one end of the cooling water tank 7 is fitted with the supporting block 12, and the supporting block 12 is used to support one end of the cooling water tank 7, so as to improve the connection reliability of the cooling water tank 7.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A protective device for a cooling wall temperature sensor above a taphole, characterized in that: The invention comprises a plurality of support tubes (6), wherein the plurality of support tubes (6) are evenly distributed between the tuyere platform (3) and the temperature sensor (1), and one end of each support tube (6) is fixedly connected to the furnace shell (4), and the other end is fixedly connected to the tuyere platform (3); a cooling water tank (7) is arranged above the temperature sensor (1), the top of the cooling water tank (7) is fitted with the support tube (6), and the cooling water tank (7) is detachably connected to the tuyere platform (3); an end of the cooling water tank (7) close to the furnace shell (4) is provided with a water inlet pipe (8), and an end of the cooling water tank (7) away from the furnace shell (4) is provided with a water outlet pipe (9).

2. The protective device for the cooling wall temperature sensor above the iron mouth according to claim 1 is characterized in that: The other end of the support tube (6) extends to the bottom of the tuyere platform (3), and the end surface of the other end of the support tube (6) is flush with the end surface of the tuyere platform (3).

3. The protective device for the cooling wall temperature sensor above the iron mouth according to claim 2, characterized in that: One end of the support tube (6) is fixed to the furnace shell (4) by welding, and the other end is fixed to the tuyere platform (3) by welding.

4. The protective device for the cooling wall temperature sensor above the iron mouth according to claim 1, characterized in that: The top-view cross-section of the cooling water tank (7) is a fan-shaped structure, and the top-view cross-section area of ​​the cooling water tank (7) is larger than the area of ​​the iron mouth (2).

5. A protective device for a cooling wall temperature sensor above a taphole according to any one of claims 1 to 4, characterized in that: One end of the cooling water tank (7) is in contact with the furnace shell (4), and the end surface of the other end is flush with the end surface of the tuyere platform (3).

6. The protective device for the cooling wall temperature sensor above the iron mouth according to claim 5, characterized in that: A connecting plate (10) vertically arranged therewith is welded to the other end of the cooling water tank (7), and the connecting plate (10) is connected to the air outlet platform (3) via fastening screws (11).

7. The protective device for the cooling wall temperature sensor above the iron mouth according to claim 6, characterized in that: A support block (12) is welded on the furnace shell (4) above the temperature sensor (1), and the bottom of one end of the cooling water tank (7) is in contact with the support block (12).

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