WO2022252472A1

WO2022252472A1 - Method for shortening replacement time of rh vacuum chamber and rh vacuum chamber replacement apparatus

Info

Publication number: WO2022252472A1
Application number: PCT/CN2021/124914
Authority: WO
Inventors: 许海虹; 欧洪林
Original assignee: 中冶南方工程技术有限公司
Priority date: 2021-06-02
Filing date: 2021-10-20
Publication date: 2022-12-08
Also published as: CN113373280A

Abstract

A method for shortening the replacement time of an RH vacuum chamber and an RH vacuum chamber replacement apparatus. In the present invention, original two vacuum chamber transport vehicles of a single processing station RH are combined into a longer dual-vacuum-chamber transport vehicle (27), and thus actions of one of two vacuum chambers (25, 26) running from the processing station to a standby station and the other of the two vacuum chambers (25, 26) running from the standby station to the processing station can be completed simultaneously, thereby reducing the non-production time of an RH vacuum refining furnace, and the present invention has the advantages of light weight, short overall length, and large working area.

Description

A method for shortening the replacement time of RH vacuum chamber and an RH vacuum chamber replacement device

technical field

The invention belongs to the field of steelmaking vacuum refining in the metallurgical industry, and in particular relates to a method for shortening the replacement time of an RH vacuum chamber.

Background technique

With the development of the economy, the user's demand for steel products continues to expand, and the requirements for steel quality are also increasing. From the perspective of the process itself and experience, RH (vacuum cycle degassing) series vacuum treatment technology has become one of the effective means to expand the product range and improve product quality.

At present, there are two types of RH vacuum refining furnaces in steel mills: single processing station and double processing station. Generally speaking, since the double processing station RH uses two processing stations alternately, it can save auxiliary operation time such as sitting bag, hanging bag, ladle car driving, wire feeding, soft mixing, etc. accounted for the vast majority. However, the single processing station RH has the advantages of energy saving, low investment cost, small footprint, and high equipment operation rate. After the emergence of new models such as V-shaped double ladle car type and ladle rotary type, the auxiliary operation time can also be effectively shortened. The single-handling station RH is back to life.

As shown in Figure 1, the existing single-processing station RH is generally equipped with one processing station and two standby stations, equipped with two vacuum chambers, which fall on two vacuum chamber transport vehicles respectively, and the processing station or standby station 11 in Fig. 1 is ladle car, 12 is steel ladle, 13 is steel platform, 14 is vacuum system, 15 is 2# vacuum chamber, 16 is 2# vacuum chamber transport vehicle, 17 is 1# vacuum chamber, 18 It is a 1# vacuum chamber transport vehicle. Taking the 2# vacuum chamber as an example to carry out continuous vacuum refining treatment for multiple furnaces at the processing station, until the refractory material of the 2# vacuum chamber is corroded and cannot be used, the 2# vacuum chamber transport vehicle is transported to the 2# standby station, and then the The workshop is hoisted to the maintenance area and replaced with a new vacuum chamber; at the same time, the 1# vacuum chamber in the hot standby state at the 1# standby station is transported to the processing station by the 1# vacuum chamber transport vehicle, and can continue Carry out vacuum refining treatment. During the replacement of the vacuum chamber of the processing station, the RH vacuum refining furnace cannot be used for production, so the shorter the vacuum chamber replacement time, the better.

Contents of the invention

The present invention aims to provide a method for shortening the replacement time of the RH vacuum chamber.

The specific plan is as follows:

A method for shortening the replacement time of the RH vacuum chamber, which is applied to a single-station RH vacuum refining furnace, and the single-station RH vacuum refining furnace has a 1# standby station, a processing station and a 2# standby station, which will One and two vacuum chambers are installed on the same vacuum chamber transport vehicle at the same time. The two vacuum chambers are respectively defined as the first vacuum chamber and the second vacuum chamber. The positions of the first and second vacuum chambers on the vacuum chamber transport vehicle Determined by the positions of the 1# standby station, processing station and 2# standby station of the single-station RH vacuum refining furnace, when the first vacuum chamber is at the processing station, the second vacuum chamber is at the 2# standby station , when the second vacuum chamber is at the processing station, the first vacuum chamber is at the 1# standby station; when replacing, the vacuum chamber to be replaced is transported to the corresponding standby process by the operation of the vacuum chamber transport vehicle, and the standby The vacuum chamber is transported to the processing station.

The invention also provides a RH vacuum chamber replacement device.

The specific plan is as follows:

A RH vacuum chamber replacement device, which is applied to a single-station RH vacuum refining furnace, and the single-station RH vacuum refining furnace has a 1# standby station, a processing station and a 2# standby station, including a double vacuum chamber transport vehicle 1. The first vacuum chamber and the second vacuum chamber installed on the double-vacuum chamber transport vehicle, the positions of the first vacuum chamber 2 and the second vacuum chamber on the double-vacuum chamber transport vehicle are controlled by 1# of the single-station RH vacuum refining furnace The positions of the standby station, processing station and 2# standby station are determined. When the first vacuum chamber is at the processing station, the second vacuum chamber is at the 2# standby station. When the second vacuum chamber is at the processing station , the first vacuum chamber is located at the 1# standby station.

Further, the double vacuum chamber transport vehicle has a gas valve station, a cooling water valve station, connecting pipelines and an inspection platform.

Further, the double-vacuum-chamber transport vehicle has a drag chain, and various energy media can be sent to the double-vacuum-chamber transport vehicle by means of the drag chain.

Further, the double vacuum chamber transport vehicle has one set of drives or two sets of drives.

Further, the double vacuum chamber transport vehicle has 3 sets of wheels, which are respectively arranged at both ends of the double vacuum chamber transport vehicle and in the middle of the double vacuum chamber.

Compared with the prior art, a method for shortening the replacement time of the RH vacuum chamber provided by the present invention has the following advantages: the present invention combines the original two vacuum chamber transport vehicles of the single processing station RH into a longer double The vacuum chamber transport vehicle can simultaneously complete one of the two vacuum chambers running from the processing station to the standby station and the other of the two vacuum chambers from the standby station to the processing station, reducing the non-stop operation of the RH vacuum refining furnace. The production time is short, and it has the advantages of light equipment weight, short overall length and large working area.

Description of drawings

Fig. 1 shows a schematic diagram of a single-station RH vacuum refining furnace in the prior art.

Fig. 2 shows a schematic diagram of a single-station RH vacuum refining furnace in the present invention.

Detailed ways

To further illustrate the various embodiments, the present invention is provided with accompanying drawings. These drawings are a part of the disclosure of the present invention, which are mainly used to illustrate the embodiments, and can be combined with related descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and advantages of the present invention. Components in the figures are not drawn to scale, and similar component symbols are generally used to denote similar components.

The present invention will be further described in conjunction with the accompanying drawings and specific embodiments.

Aiming at the deficiency of existing single station RH vacuum refining furnace, the present invention provides a kind of RH vacuum chamber replacement device, as shown in Figure 2, this RH vacuum chamber replacement device comprises a pair of vacuum chamber transport vehicles 27, installed in the double vacuum chamber The first vacuum chamber 26 and the second vacuum chamber 25 on the chamber transport cart 27.

The single-station RH vacuum refining furnace as shown in Figure 2 includes a ladle car 21, a ladle 22 positioned on the ladle car 21, a steel platform 23 and a vacuum system 24, and only the main components of the RH vacuum refining furnace are shown in the figure. It is a prior art, so the specific structure will not be repeated here. The RH vacuum refining furnace has 1# standby station, processing station and 2# standby station, wherein the processing station is located between 1# standby station and 2# standby station. The positions of the first vacuum chamber 26 and the second vacuum chamber 25 on the double vacuum chamber transporter 27 are determined by the positions of the 1# standby station, the processing station and the 2# standby station of the single-station RH vacuum refining furnace, When the first vacuum chamber 26 is at the processing station, the second vacuum chamber 25 is at the 2# standby station, and when the second vacuum chamber 25 is at the processing station, the first vacuum chamber 26 is at the 1# standby station.

Therefore, this RH vacuum chamber replacement device can be in the first vacuum chamber 26 or the second vacuum chamber 25 when one of them is moved to 1# standby station or 2# standby station by processing station, first vacuum chamber 26 or another action of the second vacuum chamber 25 from the 2# standby station or the 1# standby station to the processing station, which reduces the operation time of the RH vacuum refining furnace to replace the vacuum chamber, thereby reducing the RH vacuum refining Furnace non-production time.

In this embodiment, the double-vacuum-chamber transport vehicle 27 has a drag chain, and various energy media can be sent to the vehicle by the drag-chain, so as to facilitate the transportation of various energy media to the dual-vacuum chamber transport vehicle 27 .

In this embodiment, the double vacuum chamber transport vehicle 27 has one set of drives or two sets of drives, and the two sets of drives can play the role of one for use and one for standby.

In this embodiment, the double vacuum chamber transport vehicle 27 has more space than the existing independent two vacuum chamber transport vehicles, and these spaces can be used to install various required gas valve stations, cooling water valve stations, connection Pipeline and maintenance platform, which can facilitate the replacement of the vacuum chamber, thereby reducing the non-production time of the RH vacuum refining furnace.

In this embodiment, the double-vacuum-chamber transport vehicle 27 has 3 sets of wheels, which are respectively arranged at both ends of the transport vehicle and in the middle of the double-vacuum chambers, so as to evenly bear the load of the double-vacuum chambers.

Aiming at the shortcomings of the existing single-station RH vacuum refining furnace, the present invention also provides a method for shortening the replacement time of the RH vacuum chamber, which installs two vacuum chambers, one for use and one for standby, on the same vacuum chamber transport vehicle at the same time. The two vacuum chambers are respectively defined as the first vacuum chamber and the second vacuum chamber. The positions of the first and second vacuum chambers on the vacuum chamber transport vehicle are determined by the 1# standby station and the processing station of the single-station RH vacuum refining furnace. and 2# standby position to determine, when the first vacuum chamber is at the processing station, the second vacuum chamber is at the 2# standby station, and when the second vacuum chamber is at the processing station, the first vacuum chamber is at 1 #Standby station; when replacing, the vacuum chamber to be replaced is transported to the corresponding standby process through the operation of the vacuum chamber transport vehicle, and the spare vacuum chamber is transported to the processing station at the same time, which reduces the replacement of vacuum chambers in the RH vacuum refining furnace The purpose of operating time, thereby reducing the non-production time of the RH vacuum refining furnace.

Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined by the appended claims. Making various changes is within the protection scope of the present invention.

Claims

A method for shortening the replacement time of the RH vacuum chamber, which is applied to a single-station RH vacuum refining furnace, and the single-station RH vacuum refining furnace has a 1# standby station, a processing station and a 2# standby station, and is characterized in that : It installs two vacuum chambers, one for use and one for preparation, on the same vacuum chamber transport vehicle at the same time, and the two vacuum chambers are respectively defined as the first vacuum chamber and the second vacuum chamber, and the first and second vacuum chambers are transported in the vacuum chamber The position on the car is determined by the positions of the 1# standby station, the processing station and the 2# standby station of the single-station RH vacuum refining furnace. When the first vacuum chamber is at the processing station, the second vacuum chamber is at the 2# #Standby station, when the second vacuum chamber is at the processing station, the first vacuum chamber is at the 1# standby station; when replacing, the vacuum chamber to be replaced is transported to the corresponding standby process by the operation of the vacuum chamber transport vehicle, At the same time, the spare vacuum chamber is transported to the processing station.
A RH vacuum chamber replacement device, which is applied to a single-station RH vacuum refining furnace, and the single-station RH vacuum refining furnace has a 1# standby station, a processing station and a 2# standby station, and is characterized in that it includes a pair of Vacuum chamber transport vehicle, the first vacuum chamber and the second vacuum chamber installed on the double vacuum chamber transport vehicle, the positions of the first vacuum chamber 2 and the second vacuum chamber on the double vacuum chamber transport vehicle are controlled by single-station RH vacuum refining The positions of the 1# standby station, the processing station and the 2# standby station of the furnace are determined. When the first vacuum chamber is at the processing station, the second vacuum chamber is at the 2# standby station. When the second vacuum chamber is at the When processing the station, the first vacuum chamber is located at the 1# standby station.
The RH vacuum chamber replacement device according to claim 2, characterized in that: the double vacuum chamber transport vehicle has a gas valve station, a cooling water valve station, connecting pipelines and an inspection platform.
The RH vacuum chamber replacement device according to claim 2, characterized in that: the double-vacuum chamber transport vehicle has a towline, and various energy media can be sent to the double-vacuum chamber transport vehicle by means of the tow chain .
The RH vacuum chamber replacement device according to claim 2, wherein the double vacuum chamber transport vehicle has one set of drives or two sets of drives.
The RH vacuum chamber replacement device according to claim 2, characterized in that: the double vacuum chamber transport vehicle has 3 sets of wheels, which are respectively arranged at both ends of the double vacuum chamber transport vehicle and in the middle of the double vacuum chambers.