Protective device for external connecting pipe of converter and manufacturing method of protective device

A technology of protective devices and external pipes, which is applied in the direction of furnaces, furnace components, and manufacturing converters, can solve problems such as pipe bursts, achieve good safety, reduce the probability of bursts, and increase the degree of risk resistance.

Pending Publication Date: 2022-01-04

SHAANXI LONGMEN IRON & STEEL

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AI-Extracted Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a protective device for the external connection pipe of the converter and its m...

Method used

Replace the metal flexible pipe adopted by the converter external pipe 1 pipeline of the original waste heat boiler with a high-pressure boiler tube, the size of the high-pressure boiler pipe is φ50×10, and use the material Q345 steel plate to make a square protection on the outside of the converter external pipe 1 The steel pipe 2 is made of a Q345 steel plate and has a square-shaped protective steel pipe 2 with unclosed ends. The length, width, and height of the protective steel pipe 2 are 1500×55×55, and the diameter of the protective steel pipe 2 is 5mm larger than that of the external connection pipe 1 of the converter. The outer part of the protective steel pipe 2 is made of claw-shaped anchors with a diameter of 6 mm rebar. The overall height of the anchors is 100 mm and the width is 120 mm. Wooden templates are used to support the anchors around the anchors, so that the refractory materials can be effectively fastened to the anchors. On the other hand, the thickness of the refractory should not be less than 80mm. Pour refractory mud inside it to set up a refractory heat insulation layer to avoid direct flame burning and reduce the temperature of the water flow inside the waste heat boiler pipe. After the refractory heat insulation layer hardens, install i...

Abstract

The invention discloses a protective device for an external connecting pipe of a converter and a manufacturing method of the protective device. The protective device comprises the external connecting pipe of the converter made of a high-pressure boiler pipe, a protective steel pipe is arranged on the outer side of the external connecting pipe of the converter in a surrounding mode, the protective steel pipe is a square pipe with the two ends open, an anchoring frame is arranged on the outer side of the protective pipe, the anchoring frame comprises multiple sets of claw-shaped anchoring parts which are evenly arranged, the anchoring parts are filled with refractory materials to form a heat insulation layer, each group of anchoring parts comprises a vertical anchor rod perpendicular to the protective steel pipe, the bottom end of the vertical anchor rod is fixed on the outer side of the protective steel pipe, and an inclined anchor rod is connected to each of two sides of the bottom end of the vertical anchor rod. The problem that in the prior art, the external connecting pipe of the converter is prone to pipeline burst is solved.

Application Domain

Manufacturing convertersIncreasing energy efficiency +1

Technology Topic

Steel tubeManufacturing engineering +6

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Examples

Experimental program(1)

Example Embodiment

[0023] Example

[0024] Alternatively the original outer metal hose converter waste heat boiler is used to take over a pipe high-pressure boiler tubes, high pressure boiler tubes size of φ50 × 10, and takes over the use of material outside guard Q345 square steel plate 2 in the steel pipe 1 outside the converter, Q345 material steel plate using a square ends protective steel pipe 2 is not closed, the protective steel pipe 2 length × width × height 1500 × 55 × 55, wherein the diameter of the steel pipe 2 takes over protection than the outer diameter of 1 to 5mm large converter. 2 using 6mm diameter steel outer shielding made into steel claw-like anchor, the overall height of the anchor of 100mm, a width of 120mm, and using the wood form around the formwork anchor for easy effective refractory fastened to the anchor , the required thickness of refractory is not less than 80mm. In its interior is provided a refractory pouring clay refractory insulation layer, to avoid direct flame burning, reduce the internal temperature of the waste heat boiler water piping, fire insulation layer to be mounted to the conduit reconstruction after hardening.

[0025] The present invention is by transformation of the outer tube body of the converter, and is provided at its outer refractory heat insulating layer, to avoid direct flame barbecue converter production process of the converter waste heat boiler outfall, the original metal tube replaced once a month to after the high-pressure boiler tubes and additional protection is extended to a currently furnace served (more than one year), reduce the consumption of spare parts and equipment expenses increased its pipeline resilience and reduce the probability of occurrence of the waste heat boiler outfall in the production process of bursting to increase the extent of its anti-risk, better security.

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Description & Claims & Application Information

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