Tool for measuring invasion depth of water gap of continuous casting slab

Abstract

The utility model discloses a tool for measuring invasion depth of a water gap of a continuous casting slab, which belongs to the technical field of iron and steel smelting and comprises a cross rod, a vertical rod and an iron wire, one end of the cross rod is vertically connected with the middle of the vertical rod, the end face of one end of the vertical rod is provided with a slot used for being detachably connected with the iron wire, and one side of the slot is telescopically provided with a measuring scale. In the initial state, the measuring scale is contracted in the vertical rod, the initial scale line is flush with the end face of the vertical rod, and the initial scale value of the measuring scale is equal to the length value of the vertical rod. Compared with the prior art, the length of the used iron wire is reduced, materials are saved, a ruler does not need to be additionally prepared and carried, scale values can be directly read through the measuring ruler, the distance between the molten steel level and the top end of the water gap can be obtained, and great convenience is brought to operators.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of steel smelting, particularly relates to a tool for measuring the water gap invasion depth of continuous casting slab. BACKGROUND

[0002] The water gap invasion depth refers to the depth of the submerged entry nozzle inserted into the crystallizer liquid in the continuous casting process, which is usually measured by the distance from the crystallizer liquid surface to the water gap outlet. If the water gap is inserted too shallow, the crystallizer liquid surface will be too active, the protective slag liquid slag layer will be too thick, and slag strips are easy to form. If the water gap is inserted too deep, the crystallizer liquid surface will be too calm, which is not conducive to the formation of the protective slag liquid slag layer, resulting in surface quality problems of the casting blank. Only the appropriate water gap insertion depth can ensure the formation of a reasonable liquid slag layer thickness of the protective slag, meeting the quality requirements. In the continuous casting production process, it is particularly important to quickly and accurately measure the water gap insertion depth.

[0003] Chinese patent CN 214583500 U proposes a device for online measurement of sleeve insertion depth, which calculates the depth L of the submerged entry nozzle inserted into the crystallizer liquid surface by the known length L3 of the submerged entry nozzle, the length L2 of the vertical identification tube and the length L1 of the remaining steel wire below the vertical identification tube after melting, L=L3-(L1+L2). However, the patent has the following defects: (1) the steel wire is measured through the upper and lower ends of the vertical identification tube, so a longer measuring steel wire is needed, resulting in a longer remaining steel wire after use, causing waste; (2) L1 is measured by a scale, and the distance between the steel liquid surface and the top end of the water gap is obtained by adding L1 and L2, which is a relatively cumbersome operation and cannot directly read the scale value to obtain the distance between the steel liquid surface and the top end of the water gap, leaving room for process optimization. UTILITY MODEL CONTENTS

[0004] The utility model proposes a tool for measuring the water gap invasion depth of continuous casting slab to solve the problems of the existing tool that needs to use a longer measuring steel wire and cannot directly read the scale value to obtain the distance between the steel liquid surface and the top end of the water gap.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] A tool for measuring the water gap invasion depth of continuous casting slab, comprising a tool body and a steel wire, the tool body comprising a horizontal rod and a vertical rod, one end of the horizontal rod being connected perpendicularly to the middle part of the vertical rod; the end face of one end of the vertical rod is provided with a slot for detachably connecting the steel wire, and a measuring scale is telescopically installed on one side of the slot; the length direction of the slot, the measuring scale and the vertical rod are parallel to each other; in the initial state, the measuring scale is retracted in the vertical rod, the starting scale line of the measuring scale is level with the end face of the vertical rod, and the starting scale value of the measuring scale is equal to the length value of the vertical rod.

[0007] Further, the horizontal rod and the vertical rod are hollow rods.

[0008] Further, the horizontal rod and the vertical rod are made of aluminum alloy.

[0009] Further, the horizontal rod is provided with an anti-skid sleeve at an end away from the vertical rod.

[0010] Further, the anti-skid sleeve is made of silica gel.

[0011] Further, the end surface of the horizontal rod away from the vertical rod is of an open structure and detachably connected with an end cover; and the inside of the horizontal rod constitutes a storage cavity for storing the iron wire.

[0012] Further, the vertical rod is provided with an extension channel, the measuring scale is slidably connected with the extension channel, and the end portion of the measuring scale is larger in size than the extension channel.

[0013] Further, the end portion of the measuring scale is provided with a limiting protrusion on one side; and in an initial state, the limiting protrusion of the measuring scale is in abutment with the end surface of the vertical rod.

[0014] Further, the end portion of the vertical rod is provided with a threaded hole in communication with the extension channel, and a locking screw for locking the measuring scale is threadedly connected in the threaded hole.

[0015] Thanks to the above technical scheme, the utility model has the following beneficial effects:

[0016] 1. The iron wire is detachably inserted into the end surface of the vertical rod, without penetrating through the two end surfaces of the vertical rod, so that the length of the required iron wire is greatly reduced, the overall amount of the iron wire is effectively reduced, and the material is saved.

[0017] 2. The utility model does not need to additionally prepare and carry a ruler, but directly reads the scale value through the self-provided measuring scale to obtain the distance between the steel liquid surface and the top end of the water gap, thereby bringing great convenience to the operator.

[0018] 3. The horizontal rod and the vertical rod are hollow rods and made of aluminum alloy, so that the overall weight of the tool body is effectively reduced, and the mechanical strength is good.

[0019] 4. The horizontal rod is provided with the storage cavity for storing the iron wire, so that the whole set of tools is conveniently stored and carried, and the inconvenience caused by separately placing the tool body and the iron wire is avoided.

[0020] 5. The utility model is provided with the anti-skid sleeve on the horizontal rod, so that the operator can conveniently hold the horizontal rod to operate, and the situation that the horizontal rod is too smooth to be held by the operator is avoided.

[0021] 6. The utility model discloses still be provided with for locking the locking screw of measuring scale, when needing using measuring scale, the locking screw is adjusted loose, and the measuring scale is conveniently drawn out, when not needing using measuring scale, the locking screw is adjusted tight, avoid measuring scale accidental slip. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The external structure schematic diagram of the tool of the utility model embodiment 1 is provided with;

[0023] Figure 2 The internal structure schematic diagram of the tool of the utility model embodiment 1 is provided with;

[0024] Figure 3 For Figure 2 The local enlarged view of A in the middle;

[0025] Figure 4 The structure schematic diagram of the tool of the utility model embodiment 1 is provided with when installing the iron wire;

[0026] Figure 5 The use schematic diagram of the measuring scale of the utility model embodiment 1 is provided with;

[0027] Figure 6 The measuring principle schematic diagram of the tool of the utility model embodiment 1 is provided with;

[0028] Wherein, the mark in the drawing is: 1-cross bar, 2-vertical rod, 3-iron wire, 4-slot, 5-measuring scale, 6-anti-skid sleeve, 7-end cover, 8-locking screw, 9-limiting lug. DETAILED DESCRIPTION

[0029] The technical scheme in the utility model embodiments will be described below in clear and complete manner in conjunction with the drawings in the utility model embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor fall within the scope of the utility model.

[0030] Embodiment 1

[0031] As Figures 1-5 The utility model discloses a tool for measuring the water gap invasion depth of continuous casting slab, including tool body and iron wire 3. Wherein, the tool body includes cross bar 1 and vertical rod 2, and one end of cross bar 1 is connected with the middle part of vertical rod 2 perpendicularly. Wherein, cross bar 1 and vertical rod 2 are all hollow rods, and the material of cross bar 1 and vertical rod 2 is all aluminum alloy, effectively reduces the overall weight of tool body, and has better mechanical strength.

[0032] The end face of one end of the vertical rod is provided with a slot 4 for detachably connecting the iron wire 3, and a measuring scale 5 is telescopically installed on one side of the slot 4. The slot 4, the measuring scale 5 and the length direction of the vertical rod 2 are parallel to each other. In the initial state, the measuring scale 5 is retracted in the vertical rod 2.

[0033] The vertical rod 2 is provided with a telescopic channel, the measuring scale 5 is slidably connected with the telescopic channel, and the end part of the measuring scale 5 is larger than the size of the telescopic channel, so as to avoid the end part of the measuring scale from entering the telescopic channel. Specifically, one side of the end part of the measuring scale 5 is provided with a limiting protrusion 9, and in the initial state, the limiting protrusion 9 of the measuring scale 5 is attached to the end face of the vertical rod 2. The limiting protrusion 9 prevents the end part of the measuring scale 5 from sliding into the telescopic channel, exposes the end part of the measuring scale 5 to the outside, and facilitates pulling out the measuring scale 5 for use.

[0034] One side of the end part of the vertical rod 2 is provided with a threaded hole communicating with the telescopic channel, and a locking screw 8 for locking the measuring scale 5 is threadedly connected in the threaded hole. When the measuring scale 5 needs to be used, the locking screw 8 is loosened to facilitate pulling out the measuring scale 5, and when the measuring scale 5 does not need to be used, the locking screw 8 is tightened to prevent the measuring scale 5 from accidentally sliding out.

[0035] In other embodiments, the locking screw 8 can not be provided, but there needs to be a certain frictional resistance between the measuring scale 5 and the telescopic channel to limit the free movement of the measuring scale 5. Only when a certain pushing and pulling force is applied, the measuring scale 5 can be driven to move.

[0036] In the initial state, the starting scale line of the measuring scale 5 is flush with the end face of the vertical rod, and the starting scale value of the measuring scale 5 is equal to the length value of the vertical rod 2. For example, the length of the vertical rod 2 is 50 cm, so the starting scale value of the measuring scale 5 is 50 cm, and the scale value increases in turn from the starting end to the terminal end. The starting scale value of 50 cm is equivalent to the starting scale 0 of the conventional scale, that is, the reading of the measuring scale 5 already includes the length of the vertical rod 2, and the subsequent measurement of the length of the iron wire 3 is actually the sum of the lengths of the iron wire 3 and the vertical rod 2.

[0037] Please refer to Figure 6 The use steps of the utility model are as follows:

[0038] First step: take out the iron wire 3 and insert it into the slot 4 at the end face of the vertical rod;

[0039] Second step: hold the horizontal rod 1, place the end of the vertical rod 2 without the iron wire 3 at the upper water inlet slide plate surface, and insert the iron wire 3 at the other end into the crystallizer steel liquid surface, keep for 5 seconds, and the high-temperature molten steel will melt the part of the iron wire 3 that invades into the molten steel;

[0040] Third step: holding the horizontal rod 1, taking out the whole tool, pulling out the measuring ruler 5, keeping the starting scale line of the measuring ruler 5 with one end of the remaining iron wire 3, reading the corresponding scale value of the other end, which is the total length of the exposed length of the remaining iron wire and the length of the vertical rod 2, that is Figure 6 H2, H2 is the distance between the liquid surface of the steel and the top end of the nozzle, in this step, H2 can be directly read, without the need to obtain through calculation, optimizing the operation process.

[0041] Fourth step: the nozzle penetration depth H can be obtained by subtracting H2 from the known nozzle length H1, that is, H=H1-H2.

[0042] Therefore, the utility model does not need to prepare and carry the ruler additionally, can directly read the scale value through the self-provided measuring ruler 5 to obtain the distance between the liquid surface of the steel and the top end of the nozzle, which brings great convenience to the operator. The utility model discloses that the iron wire 3 is detachably inserted in the end face of the vertical rod 2, without penetrating through the two end faces of the vertical rod 2, compared with the prior art, the length of the required iron wire 3 is greatly reduced, the overall amount of the iron wire 3 can be effectively reduced, and materials are saved.

[0043] In addition, the end of the horizontal rod 1 away from the vertical rod 2 is provided with an anti-skid sleeve 6, the material of the anti-skid sleeve 6 is silica gel, which facilitates the operator to hold the horizontal rod 1 to operate, and avoids the case that the horizontal rod 1 is too smooth and is not conducive to the holding of the operator. The end face of the end of the horizontal rod 1 away from the vertical rod 2 is of an open structure and is detachably connected with an end cover 7, and the detachable connection mode can be sleeve connection or threaded connection. The inside of the horizontal rod 1 constitutes a storage cavity for storing the iron wire 3. In this way, the whole tool can be conveniently stored and carried, and the inconvenience caused by the separate placement of the tool body and the iron wire 3 is avoided.

[0044] The above description is a detailed description of the preferred and feasible embodiment of the utility model, but the embodiment is not used to limit the patent application range of the utility model, and any equivalent change or modification change completed under the technical spirit of the utility model should belong to the patent range covered by the utility model.

Claims

1. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab, comprising a tool body and a wire, the tool body comprising a horizontal bar and a vertical bar, one end of the horizontal bar being connected perpendicularly to the middle of the vertical bar, characterized in that: The end face of one end of the vertical rod is provided with a slot for detachably connecting the iron wire, and a measuring scale is telescopically installed on one side of the slot; the slot, the measuring scale and the length direction of the vertical rod are parallel to each other; in the initial state, the measuring scale is retracted in the vertical rod, the initial scale line of the measuring scale is flush with the end face of the vertical rod, and the initial scale value of the measuring scale is equal to the length value of the vertical rod.

2. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 1, characterized in that: The horizontal rod and the vertical rod are both hollow rods.

3. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 2, characterized in that: The materials of the horizontal rod and the vertical rod are both aluminum alloy.

4. The tool for measuring the depth of water nozzle penetration into a continuously cast slab according to claim 1, characterized in that: The end of the horizontal rod away from the vertical rod is provided with an anti-skid sleeve.

5. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 4, characterized in that: The material of the anti-skid sleeve is silica gel.

6. The tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 1, characterized in that: The end face of the end of the horizontal rod away from the vertical rod is an open structure, and a end cover is detachably connected; the inside of the horizontal rod constitutes a storage cavity for storing the iron wire.

7. The tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 1, characterized in that: The vertical rod is provided with a telescopic channel, the measuring scale is slidably connected with the telescopic channel, and the end size of the measuring scale is greater than the size of the telescopic channel.

8. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 7, characterized in that: The end of the measuring scale is provided with a limiting protrusion; in the initial state, the limiting protrusion of the measuring scale is in close contact with the end face of the vertical rod.

9. A tool for measuring the depth of penetration of a water nozzle into a continuously cast slab according to claim 8, characterized in that: The end of the vertical rod is provided with a threaded hole communicating with the telescopic channel, and a locking screw for locking the measuring scale is threadedly connected in the threaded hole.

Images