CN218425480U

CN218425480U - Device for measuring immersion depth of immersion type water gap

Info

Publication number: CN218425480U
Application number: CN202223009062.8U
Authority: CN
Inventors: 何世存; 赵祥峰; 谢长栋; 刘晓杰
Original assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Current assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Priority date: 2022-11-12
Filing date: 2022-11-12
Publication date: 2023-02-03
Anticipated expiration: 2032-11-12

Abstract

The utility model relates to a continuous casting technical field, concretely relates to measure immersion nozzle depth's device. The utility model provides a measure immersion nozzle depth's device, includes the support, and the support bottom is fixed and is provided with the sleeve, and the sleeve nozzle is constantly down, and the sleeve inner chamber is provided with the probe, and the sleeve outer wall is provided with adjusting device, the probe reciprocates under adjusting device's regulation and control. The utility model discloses can the immersion depth of accurate measurement immersion nozzle, and then through the adjustment of mouth of a river immersion depth, with immersion depth control of immersion nozzle within the standard range, both solved the mouth of a river immersion depth and crossed the degree of depth and lead to mouth of a river slag line position erosion fracture problem, solved the mouth of a river immersion depth again and crossed the casting blank that leads to shallowly and mix with the defect.

Description

Device for measuring immersion depth of immersion type water gap

Technical Field

The utility model relates to a continuous casting technical field, concretely relates to measure immersion nozzle depth's device.

Background

An immersion nozzle is needed in the production process of the billet continuous casting machine, the upper end of the immersion nozzle is connected with the lower end of an upper nozzle of a tundish, the lower end of the immersion nozzle is immersed below the liquid level of molten steel in a crystallizer, and the molten steel in the tundish flows into the crystallizer through a central hole of the immersion nozzle to prevent the molten steel from being secondarily oxidized by air. The total length of the submerged nozzle used on site is 500mm, wherein the material with the lower end more than 150mm contains ZrO ₂ The protection slag liquid slag corrosion resistance of the submerged nozzle can be greatly improved, production accidents caused by breakage of the submerged nozzle after the submerged nozzle is quickly corroded by the protection slag liquid slag are prevented, and the service life of the submerged nozzle is prolonged; the material of the submerged nozzle within the range of 150-500 mm from bottom to top does not contain ZrO ₂ The submerged nozzle in the area has poor erosion resistance to the liquid slag of the casting powder, and can be broken after being rapidly eroded by the liquid slag of the casting powder, so that the immersion depth of the nozzle needs to be controlled within the range of more than 150mm from the lower end of the nozzle in the continuous casting production process.

The immersion depth of a submerged nozzle is required to be controlled within the range of 80-120 mm, but the problem of how to accurately control the immersion depth of the nozzle becomes a difficult problem in order to ensure the quality and the production stability of a casting blank, because the problem that the immersion depth of the nozzle is more than 150mm in the field production process is frequently caused due to the lack of an accurate measuring device for measurement, the erosion position of the liquid slag of the protective slag is higher than the lower end of the submerged nozzle by more than 150mm, the nozzle is broken after being quickly eroded by the liquid slag of the protective slag, the nozzle is forced to be replaced in the normal production process, on one hand, the steel leakage accident occurs for many times in the process of fishing out the broken nozzle, on the other hand, the broken nozzle which cannot be fished out is adhered inside the casting blank, the steel piling accident occurs for many times in the steel rolling process, the production stability of the continuous casting process and the steel rolling process and the product quality guarantee cause great influence, and the technical problems cannot be solved by the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a measure device of immersion nozzle depth of immersion has solved prior art immersion nozzle depth of immersion measurement control inaccuracy and has easily leaded to production occurence of failure, the poor problem of casting blank quality.

The utility model discloses a following technical scheme realizes:

the utility model provides a measure immersion nozzle depth's device, includes the support, the fixed sleeve that is provided with in support bottom, the permanent face down of sleeve nozzle, sleeve inner chamber are provided with the probe, and the sleeve outer wall is provided with adjusting device, the probe reciprocates under adjusting device's regulation and control, can accurately measure immersion nozzle depth through the probe reciprocates.

The support is formed by fixedly connecting three sleeves, two sleeves of the three sleeves are parallel to each other, the other sleeve of the three sleeves is vertically and fixedly connected with the two sleeves which are parallel to each other, the U-shaped or I-shaped structure ensures the stability of the bracket and further ensures the stability of the sleeve.

The handle is fixedly arranged on the support and is vertically and fixedly connected with the other sleeve which is connected with the two parallel sleeves, so that the support and the regulation and control adjusting device are easy to control, and the probe is further controlled to move up and down.

The sleeve is fixedly connected to the lower sleeve of the two parallel sleeves, so that the centers of gravity of the sleeve and the support are on the same plane, and the sleeve is convenient to control through the support.

The adjusting device is an adjusting screw, the adjusting screw is in threaded connection with the sleeve, a screw rod of the adjusting screw extends into an inner cavity of the sleeve, and the adjusting screw is rotated to enable the screw rod of the adjusting screw to fasten or loosen the probe, so that the probe is controlled to move up and down in the inner cavity of the sleeve.

And the probe is provided with scale marks.

The utility model has the advantages that:

1. the utility model discloses a measuring that adjusting device regulation and control probe reciprocated and realized the immersion degree of depth to the immersion nozzle, both solved the mouth of a river immersion depth and crossed the degree of a river slag line position erosion fracture problem that leads to deeply, solved the mouth of a river immersion depth again and crossed the defect of casting blank that leads to shallowly, the production to continuous casting process and steel rolling process is stable, product quality guarantees to provide a reliable control means.

2. The utility model discloses only with support, handle, adjusting screw (sleeve), probe just can prepare, the preparation is safe, the installation is simple, it is simple to use, this device can use for a long time.

3. The utility model discloses the device can be used for a long time in the use, and the probe can be changed at any time.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The reference numerals have the following meanings: 1. a support; 2. a handle; 3. a sleeve; 4. an adjusting screw; 5. and (3) a probe.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Referring to fig. 1, a device for measuring immersion depth of an immersion nozzle comprises a support 1, wherein a sleeve 3 is fixedly arranged at the bottom of the support 1, a nozzle of the sleeve 3 faces downwards constantly, a probe 5 is arranged in an inner cavity of the sleeve 3, an adjusting device is arranged on the outer wall of the sleeve 3, the probe 5 moves up and down under the regulation and control of the adjusting device, and the immersion depth of the immersion nozzle can be accurately measured by moving up and down through the probe 5.

The support 1 is formed by fixedly connecting three sleeves, two sleeves of the three sleeves are parallel to each other, the other sleeve of the three sleeves is fixedly connected with two sleeves which are parallel to each other vertically, and the U-shaped or I-shaped sleeve is transversely arranged, so that the stability of the support is ensured, and the stability of the sleeves 3 is further ensured.

The support 1 is fixedly provided with a handle 2, the handle 2 is vertically and fixedly connected with the other sleeve which is connected with the two parallel sleeves, the support 1 and the regulation and control adjusting device are easy to control, and the probe 5 is further controlled to move up and down.

The sleeve 3 is fixedly connected to the lower sleeve of the two parallel sleeves, so that the centers of gravity of the sleeve 3 and the support 1 are on the same plane, and the sleeve is convenient to control through the support.

The adjusting device is an adjusting screw 4, the adjusting screw 4 is in threaded connection with the sleeve 3, a screw rod of the adjusting screw 4 extends into the inner cavity of the sleeve 3, and the adjusting screw 4 is rotated to enable the screw rod of the adjusting screw 4 to fasten or loosen the probe 5, so that the probe 5 is controlled to move up and down in the inner cavity of the sleeve 3.

The probe 5 is provided with scale marks, and the immersion depth of the submerged nozzle can be seen through visually observing the scale marks.

Specifically, the utility model discloses a manufacturing process and use as follows:

cutting two steel pipes with the length of 70mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm, cutting one steel pipe with the length of 160mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm, welding the three steel pipes, wherein the butt joint angles of the steel pipes are 90 degrees and are positioned on the same plane, and manufacturing the support 1. A steel pipe with the length of 70mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm is cut out, a sleeve 3 is manufactured, the sleeve 3 is connected with a support 1 in a welding mode, and the sleeve 3 and the support 1 are located on the same plane. A steel pipe with the length of 600mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm is cut out, a handle 2 is manufactured, the handle 2 is connected with a support 1 in a welding mode, and the handle 2 and the support 1 are located on the same plane. The outer wall of a sleeve 3 at the lower part of the bracket 1 is drilled, and an adjusting screw 4 is arranged in the hole. An iron wire with the length of 290mm is cut out to be used as a probe 5, the iron wire is inserted into the lower sleeve 3 of the support 1, and the adjusting screw 4 is screwed to fix the iron wire.

The support 1 is assembled and welded by three steel pipes with the outer diameter of phi 8mm and the inner diameter of phi 4mm, the handle 2 is a steel pipe with the length of 600mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm, the handle is welded with the support and is connected with the support, the sleeve 3 is a steel pipe with the length of 70mm, the outer diameter of phi 8mm and the inner diameter of phi 4mm, the sleeve is welded with the support and is connected with the support, an iron wire is inserted into the sleeve 3 at the bottom of the support 1 as a probe 5, and an adjusting screw 4 is installed on the outer wall of the sleeve 3 and used for fixing the probe 5.

The utility model discloses a use as follows:

the first step is as follows: an iron wire with the length of 290mm is cut out to be used as a probe 5, the iron wire is inserted into the sleeve 3 at the lower part of the bracket, and the adjusting screw 4 is screwed to fix the iron wire.

The second step: the upper edge of the bracket 1 is placed on the upper edge of the submerged nozzle, and an iron wire is inserted below the molten steel liquid level in the crystallizer.

The third step: and (3) taking out the device after standing for 5-10 seconds, measuring the vertical length of the position, which is away from the steel slag adhered to the iron wire, on the upper edge of the bracket by using a tape measure, and accurately calculating the immersion depth of the submerged nozzle by using a method of subtracting the vertical length from the total length of the nozzle by 500mm or directly reading scales.

The fourth step: the immersion depth of the nozzle is calculated or read, whether the immersion depth of the nozzle is within the range of 80 to 120mm is confirmed, and if not, the immersion depth of the nozzle is immediately adjusted until the immersion depth of the nozzle is within the standard range.

The fifth step: loosening the adjusting screw 4, taking out the iron wire stuck with steel slag after use, cutting out an iron wire probe 5 with the length of 290mm again, inserting the iron wire probe 5 into a steel pipe at the lower part of the bracket, screwing the adjusting screw to fix the iron wire probe 5, and finally placing the device at a specified position for next use.

Claims

1. The utility model provides a measure immersion nozzle's device of immersion depth which characterized by: including support (1), support (1) bottom is fixed and is provided with sleeve (3), and sleeve (3) nozzle is constantly down, and sleeve (3) inner chamber is provided with probe (5), and sleeve (3) outer wall is provided with adjusting device, probe (5) reciprocate under adjusting device's regulation and control.

2. An apparatus for measuring a submerged entry nozzle according to claim 1, wherein: the bracket (1) is formed by fixedly connecting three sleeves, two sleeves of the three sleeves are parallel to each other, the other sleeve of the three sleeves is fixedly connected with the two sleeves which are parallel to each other vertically, and the U-shaped sleeve or the I-shaped sleeve is transversely arranged.

3. An apparatus for measuring a submerged entry nozzle according to claim 2, wherein: the handle (2) is fixedly arranged on the support (1), and the handle (2) is vertically and fixedly connected with the other sleeve of the two parallel sleeves.

4. An apparatus for measuring a submerged entry nozzle according to claim 2, wherein: the sleeve (3) is fixedly connected to the lower sleeve of the two parallel sleeves.

5. An apparatus for measuring a submerged entry nozzle according to claim 1, wherein: the adjusting device is an adjusting screw (4), the adjusting screw (4) is in threaded connection with the sleeve (3), and a screw rod of the adjusting screw (4) extends into the inner cavity of the sleeve (3).

6. An apparatus for measuring a submerged entry nozzle according to any one of claims 1 to 5, wherein: and scale marks are arranged on the probe (5).