Submerged arc furnace bottom supporting foundation convenient to overhaul

Abstract

The utility model relates to the technical field of iron alloy submerged arc furnaces, in particular to a submerged arc furnace bottom supporting foundation convenient to overhaul. Comprising a first overhaul channel and a second overhaul channel, the first overhaul channel and the second overhaul channel are both rectangular grooves, the first overhaul channel and the second overhaul channel both penetrate through a supporting foundation in the length direction, and three thermocouples of four thermocouples of the submerged arc furnace are located in the first overhaul channel. One of the four thermocouples of the submerged arc furnace is located in the second overhaul channel, a worker can enter the first overhaul channel and the second overhaul channel to be in place below the thermocouples to conduct follow-up work, and meanwhile the worker can inspect the bottom of the submerged arc furnace in the first overhaul channel and the second overhaul channel. According to the utility model, the maintenance space of workers at the bottom of the submerged arc furnace is increased, the maintenance convenience and the working efficiency are improved, the workers are enabled to be far away from a heat source of the submerged arc furnace, and the working safety is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of ferroalloy submerged arc furnaces, in particular to a submerged arc furnace bottom support foundation which is convenient for maintenance. Background Art

[0002] The temperature measuring device of the submerged arc furnace body is an important device for monitoring the operation state of the submerged arc furnace body. Through the relevant temperature data collected by this device, the operation state of the furnace lining can be analyzed and judged, and the safety and reliability inside the furnace can be reflected indirectly. Generally, thermocouples are used for the temperature measuring device of the furnace body.

[0003] Generally, the thermocouples are arranged at the bottom of the furnace bottom, and a total of four thermocouples are installed opposite the three electrodes and at the furnace center. These thermocouples are located at the bottom of the furnace shell. Support I-beams are arranged between the furnace shell bottom and the furnace body foundation. The model of the I-beam is 40b or 45b, and the height dimension is generally small. During the furnace lining construction of a newly built submerged arc furnace, this part is relatively safe and there is no risk of high-temperature scalding. Construction workers can climb in through the gaps between the I-beams for installation. However, once the submerged arc furnace starts production, the risk of high-temperature scalding at the furnace bottom is relatively large, and workers can no longer check, maintain and replace temperature measuring devices such as thermocouples through this narrow space. Even after a furnace bottom leakage occurs, the passage between the I-beams will be completely blocked, and once the temperature measuring device is damaged, it cannot be restored, bringing greater operation risks to the subsequent production of the submerged arc furnace. Content of the Utility Model

[0004] The purpose of the utility model is to provide a submerged arc furnace bottom support foundation which is convenient for maintenance, so as to provide space for the replacement or repair of thermocouples, ensure that when the thermocouple is damaged, workers can easily enter the furnace bottom of the submerged arc furnace for maintenance and replacement operations, and provide an effective guarantee for the safe and stable operation of the subsequent submerged arc furnace body.

[0005] To achieve the above technical effects, a submerged arc furnace bottom support foundation which is convenient for maintenance of the utility model includes a support foundation with a circular cross-section. The support foundation is fixedly connected below the bottom surface of the submerged arc furnace, and the support foundation is coaxial with the submerged arc furnace. It includes a first maintenance channel and a second maintenance channel. Both the first maintenance channel and the second maintenance channel are rectangular grooves. The top surfaces of the first maintenance channel and the second maintenance channel are both open. The first maintenance channel and the second maintenance channel penetrate through the support foundation in the length direction. Three of the four thermocouples of the submerged arc furnace are located in the first maintenance channel, and one of the four thermocouples of the submerged arc furnace is located in the second maintenance channel.

[0006] Further, the first maintenance channel includes a long straight section, an inclined section, and a short straight section. There are two long straight sections and two inclined sections. The end parts of the two long straight sections are respectively arranged on the outer wall of the support foundation. The two long straight sections both extend towards the inside of the support foundation. The two inclined sections are respectively connected to one end of the two long straight sections far from the outer wall of the support foundation. The short straight section is connected between the two inclined sections. The two long straight sections are centrosymmetric with respect to the center of the support foundation. The two inclined sections are centrosymmetric with respect to the center of the support foundation. The short straight section is parallel to the long straight section. One of the four thermocouples of the submerged arc furnace located at the furnace center is arranged in the short straight section. Two of the four thermocouples of the submerged arc furnace located below the two electrodes are respectively arranged in the two long straight sections.

[0007] Further, the second maintenance channel is in the shape of a line segment. The two ends of the second maintenance channel penetrate through the outer wall of the support foundation. The second maintenance channel is parallel to the long straight section. One of the four thermocouples of the submerged arc furnace located below one electrode is arranged in the second maintenance channel.

[0008] Further, the cross-sectional dimensions of the long straight section, the inclined section, and the short straight section are all 800mm×1000mm.

[0009] Further, the cross-sectional dimensions of the second maintenance channel are all 800mm×1000mm.

[0010] Further, the support foundation is made of concrete, and steel bars are arranged inside the concrete.

[0011] The beneficial effects of the present utility model are as follows: It includes a first maintenance channel and a second maintenance channel. Both the first maintenance channel and the second maintenance channel are rectangular grooves. The top surfaces of the first maintenance channel and the second maintenance channel are both open. The first maintenance channel and the second maintenance channel both penetrate through the support foundation in the length direction. Three of the four thermocouples of the submerged arc furnace are located in the first maintenance channel, and one of the four thermocouples of the submerged arc furnace is located in the second maintenance channel. Workers can enter the first maintenance channel and the second maintenance channel to reach below the thermocouples for subsequent work. At the same time, workers can check the furnace bottom of the submerged arc furnace in the first maintenance channel and the second maintenance channel, and timely discover whether there is leakage at the furnace bottom. The setting of the present utility model increases the maintenance space for workers at the furnace bottom of the submerged arc furnace, improves the maintenance convenience and work efficiency, enables workers to stay away from the heat source of the submerged arc furnace, and protects work safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic top view structure diagram of the present utility model;

[0013] Figure 2 is the present utility model Figure 1 A - A sectional view.

[0014] In the figure: 1. First maintenance passage; 101. Long straight section; 102. Inclined section; 103. Short straight section; 2. Second maintenance passage. Detailed implementation mode

[0015] As Figures 1-2 shown, a submerged arc furnace bottom support foundation for easy maintenance of the present utility model includes a support foundation with a circular cross-section, which is fixedly connected below the bottom surface of the submerged arc furnace. The support foundation is coaxial with the submerged arc furnace. The support foundation is made of concrete, and steel bars are arranged inside the concrete. It includes a first maintenance passage 1 and a second maintenance passage 2. Both the first maintenance passage 1 and the second maintenance passage 2 are rectangular grooves. The top surfaces of the first maintenance passage 1 and the second maintenance passage 2 are both open. The first maintenance passage 1 and the second maintenance passage 2 penetrate the support foundation in the length direction. Three of the four thermocouples of the submerged arc furnace are located in the first maintenance passage 1, and one of the four thermocouples of the submerged arc furnace is located in the second maintenance passage 2. The first maintenance passage 1 includes a long straight section 101, an inclined section 102, and a short straight section 103. There are two long straight sections 101 and two inclined sections 102. The ends of the two long straight sections 101 are respectively arranged on the outer wall of the support foundation. The two long straight sections 101 both extend towards the inside of the support foundation. The two inclined sections 102 are respectively connected to one end of the two long straight sections 101 far from the outer wall of the support foundation. The short straight section 103 is connected between the two inclined sections 102. The two long straight sections 101 are centrosymmetric with respect to the center of the support foundation. The two inclined sections 102 are centrosymmetric with respect to the center of the support foundation. The short straight section 103 is parallel to the long straight section 101. One of the four thermocouples of the submerged arc furnace located at the furnace center is arranged in the short straight section 103. Two of the four thermocouples of the submerged arc furnace located below the two electrodes are respectively arranged in the two long straight sections 101. The second maintenance passage 2 is in the shape of a line segment. The two ends of the second maintenance passage 2 penetrate the outer wall of the support foundation. The second maintenance passage 2 is parallel to the long straight section 101. One of the four thermocouples of the submerged arc furnace located below one electrode is arranged in the second maintenance passage 2.

[0016] In this embodiment, the overall thickness of the support foundation is 1135 mm, and the cross-sectional dimensions of the long straight section 101, the inclined section 102, and the short straight section 103 are all 800 mm × 1000 mm; the cross-sectional dimensions of the second maintenance passage 2 are all 800 mm × 1000 mm. When the staff conducts operations, they squat down and enter the first maintenance passage 1 and the second maintenance passage 2, and move to the position of the thermocouple for operations. The size of 800 mm × 1000 mm not only ensures the smooth entry of the staff but also does not damage the overall structure of the support foundation.

[0017] In addition, it should be noted that in the present utility model, no metal objects that can conduct electricity to the ground shall be provided on the top surface of the support foundation to avoid affecting the normal use of the submerged arc furnace.

Claims

1. A support foundation for the bottom of a submerged arc furnace that is easy to maintain, the cross section of the support foundation is circular, the support foundation is fixedly connected below the bottom surface of the submerged arc furnace, the support foundation is coaxial with the submerged arc furnace, and is characterized by: The invention comprises a first inspection channel (1) and a second inspection channel (2), the first inspection channel (1) and the second inspection channel (2) are both rectangular grooves, the top surfaces of the first inspection channel (1) and the second inspection channel (2) are both open, the first inspection channel (1) and the second inspection channel (2) both penetrate the supporting foundation in the length direction, three of the four thermocouples of the submerged arc furnace are located in the first inspection channel (1), and one of the four thermocouples of the submerged arc furnace is located in the second inspection channel (2).

2. The bottom support foundation of a submerged arc furnace that is easy to maintain according to claim 1 is characterized in that: The first inspection channel (1) comprises a long straight section (101), an inclined section (102) and a short straight section (103). Two long straight sections (101) are provided, and two inclined sections (102) are provided. The ends of the two long straight sections (101) are respectively arranged on the outer wall of the supporting foundation. The two long straight sections (101) both extend toward the inside of the supporting foundation. The two inclined sections (102) are respectively connected to one end of the two long straight sections (101) away from the outer wall of the supporting foundation. The short straight section (103) is connected between the two inclined sections (102). The two long straight sections (101) are symmetrical about the center of the supporting foundation. The two inclined sections (102) are symmetrical about the center of the supporting foundation. The short straight section (103) is parallel to the long straight section (101). One of the four thermocouples of the submerged arc furnace located at the furnace core is arranged in the short straight section (103). Two of the four thermocouples of the submerged arc furnace located below the two electrodes are respectively arranged in the two long straight sections (101).

3. The bottom support foundation of a submerged arc furnace that is easy to maintain according to claim 2 is characterized in that: The second inspection channel (2) is in the shape of a line segment, and both ends of the second inspection channel (2) penetrate the outer wall of the supporting foundation. The second inspection channel (2) is parallel to the long straight section (101), and one of the four thermocouples of the submerged arc furnace, which is located below one electrode, is arranged in the second inspection channel (2).

4. The bottom support foundation of a submerged arc furnace that is easy to maintain according to claim 3 is characterized in that: The cross-sectional dimensions of the long straight section (101), the inclined section (102) and the short straight section (103) are all 800 mm×1000 mm.

5. The bottom support foundation of a submerged arc furnace that is easy to maintain according to claim 4 is characterized in that: The cross-sectional dimensions of the second inspection channel (2) are 800 mm×1000 mm.

6. A submerged arc furnace bottom support foundation that is easy to maintain according to any one of claims 1 to 5, characterized in that: The supporting foundation is concrete, and steel bars are arranged inside the concrete.

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