Combined on-site gunning maintenance tool for hydrogen metallurgy reduction equipment

Abstract

The utility model relates to a combined type on-site gunning maintenance tool for hydrogen metallurgy reduction equipment, and belongs to the technical field of metallurgical mechanical equipment maintenance. According to the technical scheme, a gunning gun body (3) is of an integrated structure composed of an inner pipe (31) and an outer pipe (32), the inner pipe (31) is connected with an oxygen pipeline, the outer pipe (32) is connected with an acetylene pipeline, and a fixing plate (33) matched with a spray gun base (5) is arranged on the outer pipe (32); one end of the connecting pipe (2) is in threaded connection with the gunning gun body (3), the other end of the connecting pipe (2) is in threaded connection with the gunning gun head (1), and a gunning material feeding hole (4) is formed in the radial direction of the gunning gun head (1). The device has the beneficial effects that on-site heating and gunning are carried out on scratches, corrosion parts, defects and the like on the surfaces of equipment rotating at a constant speed and equipment spare parts which are stopped and do not need to do dynamic balance through on-site gunning, or the hidden dangers of wear resistance and corrosion resistance are solved by spraying a coating before use, and the service life of the equipment is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of combined field patching maintenance tools for hydrogen metallurgical reduction equipment, belong to metallurgical industry mechanical equipment maintenance technical field. BACKGROUND

[0002] Hydrogen metallurgical new DRI reduction equipment, due to involving hydrogen, coke oven gas and other reduction medium, and various harmful medium after combustion, etc., equipment working environment is very complex and bad, equipment operation exists in harsh environment, continuous operation cannot be dismantled and transported for repair on a large scale and other many limit conditions, and corrosion, wear, fall-off, pitting and other equipment failure rate is higher, and have great concealment, equipment maintenance inspectors, point inspectors and equipment operating post personnel must replace new piece or wait for repair for a long time, and equipment corrosion, wear and other hidden faults further develop, possibly lead to compressor, cooling equipment and pipeline, various medium pipelines, valve system burst failure and other malignant accidents, affect the normal production of DRI shaft furnace.

[0003] In order to be able to find equipment hidden danger in time, equipment capable of repairing workpiece on line is needed, to treat hidden danger existing in equipment facilities under the premise of early discovery, early treatment and fast treatment, to ensure normal operation of equipment. Therefore, it is necessary to invent that, without large-area disassembly and transportation, disassembly under the condition of equipment maintenance site, surface scratch, corrosion site, defect and the like of uniform-speed rotating equipment and equipment spare parts which do not need to be dynamically balanced are heated and sprayed on site by field spraying, or coating is sprayed before use to solve wear and corrosion hidden trouble, and improve equipment service life. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of combined field patching maintenance tools for hydrogen metallurgical reduction equipment, through field spraying, the surface scratch, corrosion site, defect and the like of uniform-speed rotating equipment and equipment spare parts which do not need to be dynamically balanced are heated and sprayed on site, or coating is sprayed before use to solve wear and corrosion hidden trouble, improve equipment service life, solve the problems existing in the background art.

[0005] The technical scheme of the utility model is:

[0006] A kind of combined field patching maintenance tools for hydrogen metallurgical reduction equipment, including patching gun head, connecting pipe, patching gun body and spray gun pedestal, patching gun body is the integrated structure by inner tube and outer tube, inner tube is connected with oxygen pipeline, outer tube is connected with acetylene pipeline, and fixed plate matched with spray gun pedestal is arranged on outer tube;Connecting pipe one end is connected together with patching gun body by screw thread, and the other end of connecting pipe is connected together with patching gun head by screw thread, and the radial of patching gun head is equipped with patching material feeding hole.

[0007] The lance base comprises a support plate, a support rod, a lock nut and a base, the support rod is fixed on the base through the lock nut, and the support plate is connected to the support rod.

[0008] The connecting pipe is a 90° elbow pipe, and the 90° elbow pipe is provided with threads at two ends for connecting the gun head and the gun body.

[0009] The connecting pipe is a 135° elbow pipe, and the 135° elbow pipe is provided with threads at two ends for connecting the gun head and the gun body.

[0010] The device has the advantages that: in the case that the device is not disassembled and transported in a large area, and is not disintegrated, the scratch, corrosion part and defect on the surface of the rotating device and the spare part of the device which does not need to be balanced can be heated and sprayed on site, or the wear-resistant and corrosion-resistant coating is sprayed before use to solve the wear-resistant and corrosion-resistant hidden danger, and the service life of the device is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is a 90° straight connecting pipe gun spraying schematic view

[0012] Figure 2 It is a 135° angle connecting pipe gun spraying schematic view

[0013] Figure 3 It is a gun spraying head schematic view of the utility model

[0014] Figure 4 It is a gun spraying body schematic view of the utility model

[0015] Figure 5 It is a 90° straight connecting pipe schematic view

[0016] Figure 6 It is a 135° connecting pipe schematic view

[0017] Figure 7 It is a gun spraying base schematic view of the utility model

[0018] Figure 8 It is a support plate front view

[0019] Figure 9 It is a support plate top view

[0020] In the drawing: gun spraying head 1, connecting pipe 2, gun spraying body 3, gun spraying material feeding hole 4, gun spraying base 5, support plate 6, support rod 7, lock nut 8, base 9

[0021] Inner pipe 31, outer pipe 32, fixed plate 33 DETAILED DESCRIPTION

[0022] The utility model will be further described below by way of example with reference to the drawings.

[0023] Referring to the drawings Figures 1-9 A combined on-site gunning repair tool for hydrogen metallurgical reduction equipment, comprising a gunning head 1, a connecting pipe 2, a gunning body 3 and a gun base 5, the gunning body 3 is an integrated structure composed of an inner pipe 31 and an outer pipe 32, the inner pipe 31 is connected with an oxygen pipeline, the outer pipe 32 is connected with an acetylene pipeline, and the outer pipe 32 is provided with a fixing plate 33 matched with the gun base 5; one end of the connecting pipe 2 is threadedly connected with the gunning body 3, the other end of the connecting pipe 2 is threadedly connected with the gunning head 1, and the gunning head 1 is provided with a gunning material feeding hole 4 in the radial direction.

[0024] In the embodiment, referring to the drawings Figures 1-9 The tool comprises a gunning head 1, a connecting pipe 2, a gunning body 3, a gunning material feeding hole 4 and a base 5, wherein:

[0025] Referring to the drawings Figure 3 The gunning head 1 is made of a 1Cr18Ni9Ti stainless steel thick-walled pipe, one end of which is provided with external threads, and the gunning head 1 is provided with a gunning material feeding hole 4 in the radial direction. It is a medium for ignition, heating and conveying of the gunning medium, and through the joint action of oxygen and acetylene gas on the surface needing gunning, the gunning material generates heat and forms semi-melted particles.

[0026] Referring to the drawings Figure 4 The gunning body 3 is made of a stainless steel thick-walled pipe and is a key component for connecting the heating gas source. The oxygen and acetylene gas sources provide stable gas sources for heating through the inner pipe 31 and the outer pipe 32, and at the same time, the gunning body 3 can be fixed on the gun base 5 through the fixing plate 33.

[0027] Referring to the drawings Figure 5 , 6 The connecting pipe 2 has two angles, 90° and 135°, and is made of a stainless steel thick-walled pipe. Both ends are provided with internal threads and are connected with the gunning body 3 and the gunning head 1. The main function is to adjust the angle through the different angle connecting sleeves.

[0028] Referring to the drawings Figure 7 , 8 The gun base comprises a support plate 6, a support rod 7, a lock nut 8 and a base 9, wherein:

[0029] The base 9 is made of weldable A3 steel, the support rod 7 is a double-headed stud structure, the support rod 7 is fixed on the base 9 through the lock nut 8, the support plate 6 is connected with the fixing plate 33 in the gunning body 3, and the support plate 6 is used for supporting the gunning body 3.

[0030] The tool can heat and spray the scratch, corrosion site, defect and other parts of the spare parts surface of the uniform rotating equipment and the equipment without dynamic balance in the field through field spraying under the condition of not large area disassembly and transportation, disintegration, or spray coating before use to solve the wear and corrosion problems and improve the service life of the equipment.

[0031] The tool is first applied to the spraying of fan impeller, which can effectively reduce the wear and corrosion rate of the impeller after spraying, ensure the service life of the centrifugal compressor, reduce the production economic loss caused by the compressor failure shutdown, maintenance and replacement of spare parts due to the impeller, and after several inspections, the spraying layer can well make up for the disadvantages of the impeller not being corrosion-proof and not being resistant to erosion, and the spraying layer has not been peeled off after being used for 1 year.

[0032] Then it is applied to the wear-resistant spraying of the ball body of the high-pressure material flushing ball valve, which can improve the service life of the ball body by 2 months, directly repair the spare parts and improve the service life to achieve a total economic benefit of 660,000 yuan, and play a role in protecting the stable and effective operation of the equipment and the procurement cost of the equipment spare parts.

Claims

1. A combined on-site gunning repair tool for a hydrometallurgical reduction plant, characterized in that: The guniting gun comprises a guniting gun head (1), a connecting pipe (2), a guniting gun body (3) and a guniting gun base (5), the guniting gun body (3) is an integrated structure composed of an inner pipe (31) and an outer pipe (32), the inner pipe (31) is connected with an oxygen pipeline, the outer pipe (32) is connected with an acetylene pipeline, the outer pipe (32) is provided with a fixing plate (33) matched with the guniting gun base (5); one end of the connecting pipe (2) is threadedly connected with the guniting gun body (3), the other end of the connecting pipe (2) is threadedly connected with the guniting gun head (1), and the guniting gun head (1) is provided with a guniting material feeding hole (4) in the radial direction.

2. A combination on-site gunning repair tool for a hydrometallurgical reduction plant according to claim 1, characterized in that: The guniting gun base (5) comprises a support plate (6), a support rod (7), a lock nut (8) and a base (9), the support rod (7) is fixed on the base (9) through the lock nut (8), the support plate (6) is connected on the support rod (7), and the support plate (6) is fixedly connected with the fixing plate (33) on the outer pipe (32).

3. A combined on-site gunning repair tool for a hydrogen metallurgical reduction plant according to claim 1 or 2, characterized in that: The connecting pipe (2) is a 90° elbow pipe, and the 90° elbow pipe is provided with threads at two ends for connecting the guniting gun head (1) and the guniting gun body (3).

4. A combined on-site gunning repair tool for a hydrometallurgical reduction plant according to claim 1 or 2, characterized in that: The connecting pipe (2) is a 135° elbow pipe, and the 135° elbow pipe is provided with threads at two ends for connecting the guniting gun head (1) and the guniting gun body (3).

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