WO2018014765A1

WO2018014765A1 - Connecting apparatus for space flipping vessel

Info

Publication number: WO2018014765A1
Application number: PCT/CN2017/092628
Authority: WO
Inventors: 黄其明; 王翔; 余杨
Original assignee: 中冶赛迪工程技术股份有限公司
Priority date: 2016-07-19
Filing date: 2017-07-12
Publication date: 2018-01-25
Also published as: CN105950823B; CN105950823A

Abstract

A connecting apparatus for a space flipping vessel, comprising at least 3 sets of oriented lug connection mechanisms allowing a space flipping vessel (1) to be suspended from a tilting-capable ring structure (2). The oriented lug connection mechanism primarily consists of an oriented lug (5), a U-shaped engagement base (4), and a suspension screw shaft (3), wherein the U-shaped engagement base (4) is fixedly connected to an upper surface and a bottom surface of the tilting-capable ring structure (2). The oriented lug (5) is fixedly connected to an outer casing of the space flipping vessel (1). The oriented lug (5) is fixedly installed in the U-shaped engagement base (4) by means of the suspension screw shaft (3). Three supporting surfaces in contact with an internal wall of the U-shaped engagement base (4) can realize a specific length of radial sliding displacement relative to the U-shaped engagement base (4), wherein the suspension screw shaft (3) is at least one of the surfaces. The connecting apparatus can improve the safety factor of an apparatus and the stability of the apparatus during flipping, and can achieve maintenance-free operations for an extended period.

Description

[Name of invention made by ISA according to Rule 37.2] A connection device for a space-turning container

Technical field

The invention belongs to the technical field of mechanical equipment, and particularly relates to a coupling device and an optimized arrangement of a space inversion container, in particular to a tiltable oxygen steelmaking converter.

Background technique

Space-turning container-type equipment is one of the space motion machines that may be encountered in engineering, such as tiltable oxygen steelmaking converters. In addition, such container equipment is still in a relatively high temperature state during operation. Therefore, the mechanism for connecting such equipment is mainly designed to overcome temperature changes and equipment space inversion, and is a complex spatial mechanical structure. In the design of such equipment, the temperature of the container equipment and the thermal expansion, thermal stress, strength, stiffness, alternating stress and alternating elastic displacement caused by the space tumbling, etc., the solution to these problems becomes a technical factor to evaluate the device; As engineering equipment, investment, maintenance, safety and process operation characteristics of equipment should also be considered. Solutions to these problems become a safety and economic factor for evaluating the equipment. Optimizing its structure is one of the challenging mechanical design tasks.

The oxygen steelmaking converter is a typical space-turning container type equipment. The container is generally composed of a cylindrical furnace body with a tapered riser at the upper end and a ball bottom or a cone bottom at the lower end. The tiltable ring body of the gap has a trunnion on the outer side of the diameter extension line of the ring body, and the ring body and the trunnion constitute a tiltable ring body of the container. When the coupling device connects the container to the tiltable ring body, the tilting of the tilting ring body causes the container to be turned over, and the quality of the coupling device largely determines the reliability, running stability, equipment life and the entire converter system. Daily maintenance. Although the converter has been widely used in the 50s of the last century, the stable operation and maintenance-free improvement of the converter equipment is still a technological breakthrough in the past 20 years. The main reason is that the poor working conditions of the converter affect the understanding of the mechanical properties of the converter space. Early converter design techniques considered thermal expansion, thermal stress, strength, stiffness, alternating stress and other mechanical factors. The latest research and engineering practice show that alternating elastic slip (alternating elastic displacement) also affects the stability of space-flip container operation. An extremely important but very secret factor. The alternating elastic slip means that the space reversing container, the tiltable ring body and the coupling device form an elastic coupling system, and the tilting rotation of the container causes the components to be under the action of alternating load, the container shell, the tiltable ring body, The alternating elastic deformation of each part will cause alternating elastic displacement between the contact surfaces of the parts of the coupling system. This relative movement is manifested on the converter as vibration and abnormal noise of the equipment when the container is turned over, which seriously affects the safety of production.

The patent "ZL200920293711.7" changed the connection between the furnace shell and the support ring from three-point suspension to four-point suspension. The technical solution has greatly improved the above problems. It adopts the layout of the hanging mechanism to reduce Small block "Transition", theoretical analysis shows that the "alternating elastic slip" using this scheme is only 1/2 to 1/3 of the three-point hanging converter, and the smaller "alternating elastic slip" makes the abnormal sound and vibration of the converter The actual operation shows that the stability of the four-point hanging converter is much better than that of the three-point suspension. However, when the tonnage of the converter is large, there is still an elastic slip of ~5mm in the block, and the converter will still tilt. There is a small amount of abnormal noise. The patent “ZL2012102919416” further optimizes the alternating elastic slippage through the optimization of the four-point linkage and the layout of the retaining seat, and realizes the long-term maintenance-free operation of the converter. The deformation of the lifting lugs, etc., the accumulation of the assembly clearance of the connecting rod connecting rod, the pin shaft, the joint bearing, etc., there is still a certain alternating elastic slip in the supporting contact surface of the connecting system of the connecting system (2~) 3mm), there is still a small source of abnormal noise in theory, and there is a certain degree of mechanical wear. In addition, the manufacturing and on-site installation cost of the connecting rod connecting rod, pin shaft, joint bearing and other parts is high.

Summary of the invention

In view of this, the object of the present invention is to provide a coupling device and an optimized arrangement for a space-turning container, in particular to a tiltable oxygen steelmaking turn, which has the advantages of simple structure, safe and reliable operation, stable operation and convenient installation. Long-term maintenance-free and low cost.

In order to achieve the above object, the present invention provides the following technical solutions:

A coupling device for a space reversing container comprises at least three sets of guiding lug coupling mechanisms for hanging a space reversing container on a tiltable ring body; the guiding lug coupling mechanism is mainly composed of a guiding lug, a U-shaped card seat and The hanging screw is composed of a U-shaped card holder fixed to the upper surface or the lower surface of the tiltable ring body; the guiding lifting lug is fixed to the outer casing of the space reversing container, and the guiding lifting lug is clamped by the hanging screw The three supporting surfaces formed in the U-shaped card holder and in contact with the inner wall of the U-shaped card holder may each have a certain radial slip amount with respect to the U-shaped card holder, and the hanging screws are at least one.

By adopting the above scheme, the complete coupling device of the present invention has three or more sets of guiding lug coupling mechanisms, and the three supporting surfaces of the guiding lugs can have a radial movement of several tens of millimeters along the inner wall of the U-shaped deck. To adjust the slight swing or elastic deformation of the hanging screw at this time, that is, the structure can absorb the dimensional change caused by the temperature difference or the space high temperature creep deformation of the tilting ring body of the tilting ring body, thereby improving The safety margin of the equipment and the smoothness of the equipment during the tumbling process, and the long-term maintenance-free, and the convenience of the maintenance process.

Further, in order to better implement the present invention, the hanging screw can be subjected to a plurality of different mounting manners according to actual process requirements, and the utility model is specially configured to: the hanging screw penetrates the upper and lower surfaces of the tiltable ring body Or the hanging screw penetrates the mounting structure of the outer wall of the tiltable ring; or the hanging screw is hung on the U-shaped bottom of the U-shaped card holder.

Further, in order to better implement the present invention, in order to maintain and adjust the installation gap and the degree of fit between the guiding lug and the U-shaped card holder, so that the two can meet the assembly and use requirements, the special configuration is as follows: A pad set is disposed between the three types of support surfaces of the card holder and the guide lug, and the pad set may be combined by one or more of a ball pad, a flat pad or a diagonal pad.

Further, in order to better implement the present invention, the strength of the U-shaped card holder can be improved, and the special configuration is as follows: the detachable connection of the U-shaped card holder has a crossing across the opening and the guiding lug. Pre-tightening screw that is ribbed and not in contact with the boom screw.

Further, in order to better implement the present invention, it is possible to ensure a stable and reliable connection between the U-shaped card holder and the guiding lifting lug when satisfying the smooth sliding of the guiding lug with respect to the U-shaped card holder, and the special configuration is as follows: The hanging screw has a certain length, and ball ends are arranged at both ends of the hanging screw.

The present invention utilizes the above-described optimal arrangement of the coupling device, specifically: one of the two guide rails is disposed in four directions of two diagonal lines symmetrically distributed along the axis of rotation of the tiltable ring body, The angle between any of the diagonal lines and the axis of rotation ranges from 25° to 50°.

By adopting the above scheme, the four sets of guide lug coupling mechanisms of the present invention constitute a complete space inversion container and a tilting ring body coupling device, which is particularly suitable for large converters.

The beneficial effects of the invention are:

1. Each set of guiding lug coupling mechanism provides vertical and horizontal orthogonal spatial force for the space reversing container, and provides a certain amount of expansion and contraction that can be moved along the guiding surface, and three or more sets of guiding lug coupling mechanisms are formed. The complete space flipping container and the tilting ring body coupling device enable any space of the tilting ring body to tilt and roll, can support the coupling and drive the space to flip the container for the same movement, and allow the space to flip the container relative to the tiltable Thermal expansion of the ring.

2. In the coupling device, the U-shaped card holder and the guiding lifting lug are machined and matched, and the vertical supporting surface is pre-tightly attached to the tiltable ring body by the hanging screw. With reasonable arrangement, in theory, any intersection can be eliminated. Variable elastic slip ensures safe and smooth operation of the equipment and guarantees maintenance-free for years and even decades. (Exception: If the screw is loose or the U-shaped carriage machining error has a large gap, these gaps will become the condition for the contact surface to move, and the equipment will have abnormal noise).

3. The structure or mechanism of the coupling device is simple. There are no special materials, such as joint bearings, pins, and tie rods, which greatly reduce the manufacturing cost. The weight of the hanging system is also reduced by more than 50%, and the running quality is better. It is very convenient to install and disassemble.

4. The prestressed structure in the U-shaped deck reduces the stress on the root of the U-shaped deck and can increase the strength of the U-shaped deck by 80% to 100%.

5. The installation and construction of the coupling device is convenient. It provides a variety of connection and suspension structures on the tiltable ring body, which can be used for equipment modification or new equipment selection.

6, the system's multiple safety margins, because each set of guiding lug coupling mechanism can be composed of multiple hanging screws (2 ~ 12), the safety design to ensure that even if half of the screw failure, can also maintain the safety of the hanging device.

7. The optimal arrangement of the space-flip container coupling device is that the system is specially designed for the working condition of the tiltable oxygen converter. The optimal arrangement of the four-point connection is mainly:

7.4. The four sets of guiding lug coupling mechanisms are arranged in the area where the relative displacement of the system after the tiltable ring body and the space reversing container are connected, that is, the joint area where the alternating elastic slip amount is close to 0, and the device has high equipment stability.

7.4. Four sets of guiding lug coupling mechanisms are arranged under the tiltable ring body and the space reversing container. This area is the low temperature area of the whole converter shell, which can improve the strength of the coupling mechanism, reduce the thermal stress and reduce the relative thermal expansion of the shell ( Typically 20 mm), and the piping arrangement of the tiltable ring body and the tilting trunnion area is very advantageous.

7.4. The four sets of guiding lug coupling mechanisms are arranged to avoid the two high-leakage steel areas of the converter container feeding and tapping, and the production is safer. And any group of four sets of guiding lug joints was destroyed in the steel leakage accident, and the converter can still maintain emergency production operations.

7.4. The guiding lug coupling mechanism is arranged in the area with the highest rigidity and strength of the space reversing container (converter furnace shell) to extend the life of the casing.

In general, this technology makes the maintenance of related equipment less, and has the advantages of huge operational quality, equipment safety, investment and construction.

Other advantages, objects, and features of the invention will be set forth in part in the description which follows, and in the <RTIgt; The teachings of the present invention are taught. The objectives and other advantages of the invention may be realized and obtained by the following description.

DRAWINGS

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail with reference to the accompanying drawings in which:

1 is a schematic view showing the installation of a guiding lug coupling mechanism in a coupling device of a space reversing container according to the present invention;

Figure 2 is a plan view of Figure 1 (the arrangement of the reaction-guided lug coupling structure on the space-turning container);

3 is a side view of a hanging screw penetrating the upper and lower surfaces of the tiltable ring body in the first embodiment of the guiding lug coupling mechanism of the present invention;

Figure 4 is a front elevational view of Figure 3;

Figure 5 is a side elevational view of the first embodiment of the guide hanger attachment mechanism of the present invention in which the plurality of suspension screws pass through the upper and lower surfaces of the tiltable ring body;

Figure 6 is a front elevational view of Figure 5;

Figure 7 is a side view of the mounting structure of the plurality of boom screws passing through the outer wall of the tiltable ring in the second embodiment of the guide hanger coupling mechanism of the present invention;

Figure 8 is a front elevational view of Figure 7;

Figure 9 is a side view of a plurality of hanging screws suspended from the bottom surface of the U-shaped card holder in the third embodiment of the guiding lug coupling mechanism of the present invention;

Figure 10 is a front elevational view of Figure 9;

Figure 11 is an enlarged schematic view showing the end of the hanging screw of Figure 10;

Figure 12 is an optimized layout view of the guiding lug coupling mechanism of the coupling device of the space reversing container of the present invention.

In the figure: 1 is a space reversing container; 2 is a tiltable ring body, 2a, 2b are rotating trunnions; 3 is a hanging screw, 3a is a ball pad, 3b is a nut; 4 is a U-shaped card seat, 4a is a pre-tightening Screw; 5 is the guiding lug, 5a, 5b, 5c are the mat group.

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1-2, the space reversing container 1 is located in the tiltable ring body 2, and the tilting ring body 2 is a closed or open annular force receiving member, and the rotating trunnions 2a, 2b are provided at both ends; In the example, the three sets of the guiding lug coupling mechanisms form a complete coupling device, so that the space reversing container is hung on the tiltable ring body, that is, a group of the tilting ring body 2 is arranged in the center, and the two sides are close to the rotating ear. The shafts 2a, 2b are each arranged at an angle of a (0 to 30) from the axis of rotation, and the three sets of the guide hanger coupling mechanisms are disposed on the lower surface of the tiltable ring 2. Of course, in different embodiments, the number of the guiding lug coupling mechanisms may be three or more, and the tiltable ring body 2 may be made into an open loop (in this case, the dotted line portion in FIG. 2 does not exist), and The guiding lug coupling mechanism can also be disposed on the upper surface of the tiltable ring body 2 (not shown);

As shown in FIG. 3-4, the guiding lug coupling mechanism is mainly composed of a guiding lug 5, a U-shaped card holder 4 and a hanging screw 3, wherein the U-shaped card holder 4 is fixed to the lower surface of the tiltable ring body 2 The guiding lug 5 is fixed to the outer casing of the space reversing container 1, and the guiding lug 5 is inserted into the U-shaped card holder 4 by the hanging screw 3 and is formed in contact with the inner wall of the U-shaped card holder 4 (Unmarked) may have a certain amount of radial slip relative to the U-shaped cartridge 4; the hanging screw 3 is set to one. Of course, in different examples, as shown in FIG. 5-6, the hanging screw 3 can also be arranged in a plurality of rows or rows, so that if any one or more of the hanging screws fail, it will not Will immediately affect the normal use of the space flip container. By adopting the above scheme, the complete coupling device of the present invention has three or more sets of guiding lug coupling mechanisms, and the three supporting surfaces of the guiding lugs can have a movement amount of several tens of millimeters along the inner wall of the U-shaped deck. Adjusting the slight swing or elastic deformation of the hanging screw at this time, that is, the structure can absorb the dimensional change caused by the temperature difference or the local high temperature creep deformation of the tilting ring body of the tilting ring body, thereby improving the equipment Safety margins and smoothness of the equipment during the tumbling process, and long-term maintenance-free, as well as the convenience of the maintenance process.

In this embodiment, in order to better realize the different mounting manners of the hanging screw according to the actual process requirements, there are the following specific embodiments: Embodiment 1, as shown in FIG. 3-6, the hanging screw 3 runs through On the upper and lower surfaces of the tiltable ring body 2; this embodiment will change the structure of the tiltable ring body and is suitable for use in new projects. Embodiment 2, as shown in Figure 7-8, The hanging screw 3 is inserted through the mounting structure (not labeled) of the outer side wall of the tiltable ring body 2; this embodiment can change the structure of the tiltable ring body, and is suitable for the modification of the existing equipment, and the new device can also be used. Embodiment 3, as shown in FIG. 9-10, the hanging screw 3 is hung on the U-shaped bottom of the U-shaped card holder 4; this embodiment can change the structure of the tiltable ring body, and is suitable for the modification of the existing equipment, or New can be. In addition, in each of the examples, the exposed portion of the hanging screw 3 may be provided with a protective cover or an integral protective cover to withstand harsh conditions.

As shown in FIG. 6, 8, and 10, in the embodiment, a pad group is disposed between the U-shaped card holder 4 and the three supporting surfaces of the guiding lug 5, so that the maintenance and adjustment of the guiding lug can be better. The installation clearance and fit between the U-shaped card holders enable the two to meet the assembly requirements. The pad sets 5a, 5b, 5c may be combined by one or more of a ball pad, a flat pad or a diagonal pad.

As shown in FIG. 5-10, in the present embodiment, the U-shaped card holder 4 is detachably connected with a standing rib (not labeled) crossing the opening and the guiding lug 5 and not in contact with the boom screw 3. The screw 4a is pretensioned. In this way, the U-shaped card holder is strengthened by the pre-tightening screw, and the pre-tightening screw needs to penetrate the rib opening of the guiding lug and keep the distance from the edge of the rib opening, so that the U-shaped card seat and the guiding lifting lug When there is moderate relative motion, at the same time, the pre-tightening screw group does not interfere;

As shown in FIG. 11, in the present embodiment, the hanging screw 3 has a certain length, and the ball screw 3a is disposed at both ends of the hanging screw 3. In this way, the hanging screw is tightened by the nut 3b and pressed against the ball pad 3a, so that the stable and reliable connection between the U-shaped card holder and the guiding lifting lug can be ensured when the guiding lug is smoothly slipped relative to the U-shaped card holder. In addition, in order to ensure a small swinging amplitude of the hanging screw, it is recommended to hang the screw swing angle less than 5° within the required range of radial sliding of the U-shaped cartridge shell.

As shown in FIG. 12, the present invention further provides an optimized arrangement by using the above-mentioned coupling device, specifically: one of four orientations of two diagonal lines symmetrically distributed along the axis of rotation of the tiltable ring body 2 The guiding lug coupling mechanism, and the angle b between any of the diagonal lines and the rotation axis ranges from 25° to 50°. In this way, the four sets of guiding lug coupling mechanisms form a complete coupling device, so that the space reversing container 1 is hung on the tiltable ring body 2, and at the same time, the four sets of guiding lug coupling mechanisms are arranged under the tiltable ring body 2 The surface makes this optimized arrangement particularly suitable for large converters.

The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to be limiting. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art Modifications or equivalents are intended to be included within the scope of the appended claims.

Claims

A coupling device for a space-turning container, comprising: at least three sets of guiding lug coupling mechanisms for hanging a space-turning container on a tiltable ring body; the guiding lug coupling mechanism is mainly a guiding lug, U a card holder and a hanging screw, the U-shaped card holder is fixed to the upper surface or the lower surface of the tiltable ring body; the guiding lifting lug is fixed to the outer casing of the space reversing container, and the guiding lifting lug is suspended The three supporting surfaces formed by the screw card in the U-shaped card holder and in contact with the inner wall of the U-shaped card holder can have a certain radial slip amount with respect to the U-shaped card holder, and the hanging screws are at least one.
The coupling device for a space-turning container according to claim 1, wherein the hanging screw penetrates through upper and lower surfaces of the tiltable ring body.
The coupling device for a space-turning container according to claim 1, wherein the hanging screw penetrates the mounting structure of the outer wall of the tiltable ring.
The coupling device for a space-turning container according to claim 1, wherein the hanging screw is hung on a U-shaped bottom of the U-shaped card holder.
The coupling device for a space-turning container according to claim 1, wherein a pad group is disposed between the U-shaped card holder and the three supporting surfaces of the guiding lug, and the pad group can be a ball pad. One or more combinations of flat pads or diagonal pads.
The space-turning container coupling device according to claim 1, wherein the U-shaped card holder is detachably connected with a vertical rib crossing the opening and the guiding lug and not with the hanger screw Contact pre-tightening screw.
The coupling device for a space-turning container according to claim 1, wherein the hanging screw has a certain length, and ball ends are disposed at both ends of the hanging screw.
An optimized arrangement of a coupling device for a space-turning container according to any one of claims 1 to 7, characterized in that four directions of two diagonal lines are symmetrically distributed along the axis of rotation of the tiltable ring body Each of the guiding lug coupling mechanisms is provided, and the angle between any of the diagonal lines and the rotation axis ranges from 25° to 50°.