A protection device for preventing high-temperature spatter of an electric furnace cable

Abstract

The utility model discloses a kind of electric furnace cable protection devices of anti-spraying slag high temperature, it includes to place the inner tube of electric furnace cable and the outer tube of being sleeved on inner tube and being coaxial with inner tube, the end cap of being sleeved on inner tube is provided at the both ends of outer tube, to form sealed cooling cavity between inner tube, end cap and outer tube;Water outlet pipe and water inlet pipe that communicate sealed cooling cavity are provided on outer tube;Electric furnace cable is placed in the inner tube of the utility model, cable is directly prevented from burning loss caused by spraying slag, simultaneously, external cooling water is connected by water outlet pipe and water inlet pipe, to cool down electric furnace cable by sealed cooling cavity, avoid electric furnace production in spraying slag high temperature to cause cable burnout, insulation decline, insulation aging.

Description

Technical Field

[0001] This utility model relates to the field of electric furnace technology, specifically to a protection device for electric furnace cables against high-temperature slag spray. Background Technology

[0002] In today's industrial production, electric furnaces, as a key heating device, are widely used in many industries such as metal smelting, heat treatment, and ceramic firing. By converting electrical energy into heat energy, electric furnaces provide a precise and controllable high-temperature environment for various processes, playing a vital role in ensuring product quality and improving production efficiency.

[0003] When an electric furnace is in operation, its internal temperature is extremely high, typically reaching thousands of degrees Celsius. This extreme high-temperature environment not only places stringent heat resistance requirements on the furnace's structural materials but also poses a significant challenge to the cables connected to it. As the power transmission channel for the electric furnace, the cables are responsible for stably and safely delivering the powerful electrical energy into the furnace's interior; their normal operation directly affects the furnace's working efficiency and service life.

[0004] Because the cables of the electric furnace are affected by the high temperature of the slag spraying, they are prone to being burned, having reduced insulation, or aging. Utility Model Content

[0005] To address the aforementioned problems in the prior art, this utility model provides a protection device for electric furnace cables against high temperatures caused by slag spraying, thus solving the problem of cable damage caused by the high temperatures of slag spraying in existing electric furnaces.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A protective device for preventing slag spraying and high temperature of electric furnace cable is provided, which includes an inner tube for placing the electric furnace cable and an outer tube sleeved on the inner tube and coaxial with the inner tube. Both ends of the outer tube are provided with end caps sleeved on the inner tube, so that a sealed cooling cavity is formed between the inner tube, the end caps and the outer tube. A water outlet pipe and a water inlet pipe communicating with the sealed cooling cavity are provided on the outer tube.

[0007] This invention places the electric furnace cable inside the inner tube, protecting the cable from direct burns caused by slag spray. At the same time, it connects to external cooling water through the outlet and inlet pipes, thereby cooling the electric furnace cable through the sealed cooling chamber, preventing the cable from burning, losing insulation, or aging due to the high temperature caused by slag spray during electric furnace production.

[0008] Furthermore, the inner tube is longer than the outer tube.

[0009] Furthermore, multiple fixing components are fitted onto the outer tube.

[0010] Furthermore, the fixing component includes a fixing base and a fixing cover plate disposed opposite to each other; the fixing base and the fixing cover plate are engaged with each other to fix the outer tube.

[0011] Furthermore, the fixed base has first connecting ears evenly distributed on the outer side of the mating joint; the fixed cover plate has second connecting ears that fit with the first connecting ears at the mating joint, and the fixed base and the fixed cover plate are connected by the first connecting ears and the second connecting ears.

[0012] Furthermore, a third connecting ear is provided on the side wall of the fixed base, and multiple through holes are evenly provided on the third connecting ear.

[0013] Furthermore, ball valves are installed on both the outlet and inlet pipes.

[0014] This utility model discloses a protection device for preventing high-temperature slag spraying from electric furnace cables, the beneficial effects of which are: This invention places the electric furnace cable inside the inner tube, protecting the cable from direct burns caused by slag spray. At the same time, it connects to external cooling water through the outlet and inlet pipes, thereby cooling the electric furnace cable through the sealed cooling chamber, preventing the cable from burning, losing insulation, or aging due to the high temperature caused by slag spray during electric furnace production. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a high-temperature protection device for preventing slag spraying from an electric furnace cable according to the present invention.

[0016] Figure 2 This is a structural schematic diagram of the fixing component of this utility model.

[0017] Among them, 1. Inner tube; 2. Outer tube; 3. Sealed cooling chamber; 4. Water outlet pipe; 5. Water inlet pipe; 6. End cap; 7. Fixing assembly; 71. Fixing base; 72. Fixing cover plate; 73. First connecting ear; 74. Second connecting ear; 75. Third connecting ear; 76. Through hole; 8. Ball valve. Detailed Implementation

[0018] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0019] Example 1 refer to Figures 1-2This embodiment provides a protection device for electric furnace cables against high temperatures caused by slag spraying. Its purpose is to solve the problem of cable damage caused by the high temperature of slag spraying in existing electric furnaces. The specific structure of this embodiment will be described in detail below.

[0020] A protective device for preventing high-temperature slag spray from electric furnace cables includes an inner tube 1 for placing the electric furnace cable and an outer tube 2 sleeved on the inner tube 1 and coaxial with the inner tube 1.

[0021] Specifically, the outer tube 2 is provided with end caps 6 that are fitted onto the inner tube 1 at both ends, so that a sealed cooling cavity 3 is formed between the inner tube 1, the end caps 6 and the outer tube 2; the outer tube 2 is provided with an outlet pipe 4 and an inlet pipe 5 that connect to the sealed cooling cavity 3.

[0022] Specifically, ball valves 8 are installed on both the outlet pipe 4 and the inlet pipe 5.

[0023] In this embodiment, the end cap 6, inner tube 1 and outer tube 2 are all made of metal. The electric furnace cable is placed inside the inner tube 1, which can physically protect the cable from burn damage caused by slag spray.

[0024] Meanwhile, the end cap 6 can be directly welded to the inner tube 1 and the outer tube 2 to form a sealed cooling chamber 3. It is connected to external cooling water through the water outlet pipe 4 and the water inlet pipe 5 to form a cooling water circuit. The opening and closing are controlled by the ball valve 8, so that the electric furnace cable can be cooled through the sealed cooling chamber 3 to avoid the cable burning, insulation degradation and insulation aging caused by the high temperature of slag spraying during electric furnace production.

[0025] Specifically, the inner tube 1 is longer than the outer tube 2. This makes it easier to thread and retrieve cables through the inner tube 1.

[0026] Specifically, the outer tube 2 is fitted with multiple fixing components 7. The fixing components 7 include a fixing base 71 and a fixing cover plate 72 arranged opposite to each other; the fixing base 71 and the fixing cover plate 72 are fastened together to fix the outer tube 2.

[0027] In this embodiment, multiple fixing components 7 can be respectively provided along the length of the outer tube 2 to fix the inner tube 1 and the outer tube 2 on the ground. The fixing component 7 includes a fixing base 71 and a fixing cover plate 72. The fixing base 71 and the fixing cover plate 72 are fastened to each other to fix the inner tube 1 and the outer tube 2.

[0028] Specifically, the fixed base 71 has a first connecting ear 73 evenly distributed on the outer side of the mating part; the fixed cover plate 72 has a second connecting ear 74 that fits with the first connecting ear 73 at the mating part, and the fixed base 71 and the fixed cover plate 72 are connected by the first connecting ear 73 and the second connecting ear 74.

[0029] In this embodiment, the fixed base 71 and the fixed cover plate 72 are symmetrically arranged U-shaped frames. On the outer side of the mating end face of the fixed base 71 and the fixed cover plate 72, a first connecting ear 73 and a second connecting ear 74 that fit each other are respectively provided. The fixed base 71 and the fixed cover plate 72 are connected through the first connecting ear 73 and the second connecting ear 74.

[0030] Optionally, fitting through holes are provided on the first connecting ear 73 and the second connecting ear 74 respectively, and bolts are passed through the through holes and engaged with nuts to connect and fix the base 71 and the cover plate 72.

[0031] Specifically, a third connecting ear 75 is provided on the side wall of the fixed base 71, and multiple through holes 76 are evenly provided on the third connecting ear 75.

[0032] In this embodiment, the base 71 is fixed to the ground by inserting expansion screws through the through hole 76.

[0033] Although the specific embodiments of the utility model have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this patent. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this patent.

Claims

1. A protective device for preventing high-temperature slag spraying from electric furnace cables, characterized in that: It includes an inner tube (1) for placing the electric furnace cable and an outer tube (2) that is sleeved on the inner tube (1) and coaxial with the inner tube (1); The outer tube (2) is provided with end caps (6) fitted onto the inner tube (1) at both ends, so that a sealed cooling chamber (3) is formed between the inner tube (1), the end caps (6) and the outer tube (2); the outer tube (2) is provided with an outlet pipe (4) and an inlet pipe (5) that connect to the sealed cooling chamber (3).

2. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 1, characterized in that: The length of the inner tube (1) is greater than the length of the outer tube (2).

3. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 1, characterized in that: Multiple fixing components (7) are fitted onto the outer tube (2).

4. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 3, characterized in that: The fixing component (7) includes a fixing base (71) and a fixing cover plate (72) arranged opposite to each other; the fixing base (71) and the fixing cover plate (72) are engaged with each other to fix the outer tube (2).

5. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 4, characterized in that: The fixed base (71) has a first connecting ear (73) evenly arranged on the outer side of the docking point; the fixed cover plate (72) has a second connecting ear (74) that fits with the first connecting ear (73) at the docking point, and the fixed base (71) and the fixed cover plate (72) are connected through the first connecting ear (73) and the second connecting ear (74).

6. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 4, characterized in that: The fixed base (71) has a third connecting ear (75) arranged opposite to each other on its side wall, and the third connecting ear (75) has a plurality of through holes (76) evenly opened.

7. The high-temperature protection device for preventing slag spraying from electric furnace cables according to claim 1, characterized in that: Ball valves (8) are installed on both the outlet pipe (4) and the inlet pipe (5).

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