WO2010087136A1

WO2010087136A1 - Blast furnace installation, method for improving earthquake resistance of a blast furnace installation, and linking vibration control apparatus

Info

Publication number: WO2010087136A1
Application number: PCT/JP2010/000341
Authority: WO
Inventors: 安藤慶治; 高野良広; 奥谷恭士; 赤木一志
Original assignee: 新日本製鐵株式会社
Priority date: 2009-01-27
Filing date: 2010-01-21
Publication date: 2010-08-05
Also published as: JP4746718B2; KR101251196B1; KR20110094104A; JPWO2010087136A1

Abstract

Disclosed is a blast furnace installation which comprises: a blast furnace body; a furnace body frame which surrounds the blast furnace body; and a linking vibration control apparatus which is provided at a position that is no less than halfway up the blast furnace body and links the area between the blast furnace body and the furnace body frame.

Description

Blast furnace equipment, method for improving seismic performance of blast furnace equipment and coupled vibration control device

The present invention relates to a blast furnace facility with improved seismic performance, a method for improving seismic performance of a blast furnace facility, and a connected vibration control device.
This application claims priority based on Japanese Patent Application No. 2009-014903 filed in Japan on January 27, 2009, the contents of which are incorporated herein by reference.

The blast furnace equipment at the steelworks has a structure in which a furnace body for supporting the raw material charging equipment is arranged around the blast furnace body. In conventional blast furnace equipment, the seismic performance of the entire blast furnace equipment has been enhanced by firmly bonding the furnace body to the blast furnace body. However, since the height of the furnace shell is about twice as high as the height of the blast furnace body, there is a problem that the response (amplitude) to the earthquake at the upper part of the furnace shell becomes excessive. .

Therefore, in the blast furnace equipment in the current steelworks, a structure in which the blast furnace main body and the furnace body are not combined, a so-called free stand type is adopted. In the free stand type, in order to improve the seismic performance of the furnace body, reinforcement work is performed to increase the rigidity of the furnace body itself. However, since the constituent members of the furnace body are added and the existing members need to be reinforced, the weight of the furnace body is greatly increased as compared with the prior art. However, since there is a limit to the load that can be supported by the existing blast furnace equipment foundation (the blast furnace body and the foundation of the furnace body), it is difficult to perform earthquake-proof work that leads to a significant increase in the weight of the furnace body.

On the other hand, as a technique for improving seismic performance, Patent Document 1 discloses a structure in which structures having different natural periods are coupled together by a coupled seismic control mechanism. Patent Document 2 discloses a seismic control frame for an incineration plant using a damper.

JP 2002-266517 A Japanese Patent No. 3277803

However, none of the techniques for improving seismic performance disclosed in Patent Documents 1 and 2 is intended for a high structure in which a blast furnace and a frame such as a blast furnace facility are integrated. In addition, the structure described in Patent Document 1 is not suitable for blast furnace equipment that undergoes thermal deformation during operation because no consideration is given to thermal deformation of the structure. In addition, the seismic control frame described in Patent Document 2 improves the seismic performance against horizontal (front / rear / left / right) seismic motion (seismic input), but effectively exhibits seismic control effects against vertical seismic motion. It is not possible.

Therefore, an object of the present invention is to provide a connected seismic control device that efficiently exerts a seismic control effect against seismic input from all directions in a blast furnace facility of a steelworks. Furthermore, an object of the present invention is to provide a blast furnace facility that can cope with thermal deformation and has an efficient seismic performance by devising a method for attaching the coupled vibration control device.

(1) A blast furnace facility, comprising: a blast furnace main body; a furnace shell surrounding the blast furnace main body; and provided at a position that is at least half of a height of the blast furnace main body; And a connected vibration control device for connecting the two.
(2) In the blast furnace equipment described in (1) above, the connected vibration control device includes a blast furnace mounting portion attached to the blast furnace main body, a furnace shell mounting portion attached to the furnace shell, and the blast furnace mounting portion. And a telescopic vibration control mechanism connected between the furnace body mounting portion and the furnace body anchoring portion; and attaching to the blast furnace main body so that the expansion and contraction direction of the vibration control mechanism includes the circumferential direction of the blast furnace main body. Good.
(3) In the blast furnace equipment described in (1) above, the coupled vibration control device includes a blast furnace mounting portion attached to the blast furnace main body, a furnace shell mounting portion attached to the furnace shell, and the blast furnace mounting portion. And a telescopic vibration control mechanism connected between the furnace body attachment portion; and the vibration control mechanism may be attached to the blast furnace main body so that the expansion / contraction direction of the vibration control mechanism includes a radial direction of the blast furnace main body. .
(4) In the blast furnace installation described in (2) or (3) above, the blast furnace mounting portion may be mounted such that the vibration control mechanism is movable in the vertical direction.

(5) A method for improving the seismic performance of a blast furnace facility comprising a blast furnace body and a furnace body surrounding the blast furnace body, wherein a connected seismic control device for connecting the blast furnace body and the furnace body is connected to the blast furnace body. A method for improving seismic performance, characterized in that the method is provided at a position of 1/2 or more of the height.
(6) In the method for improving seismic performance described in (5) above, the coupled seismic control device includes a blast furnace mounting portion attached to the blast furnace main body, a furnace body mounting portion attached to the furnace shell, and the blast furnace A telescopic vibration control mechanism connected between the attachment part and the furnace body attachment part; and attached to the blast furnace body such that the expansion / contraction direction of the vibration control mechanism includes a circumferential direction of the blast furnace body May be.
(7) In the method for improving seismic performance described in (5) above, the connected seismic control device includes a blast furnace mounting portion attached to the blast furnace body, a furnace body mounting portion attached to the furnace body shell, and the blast furnace A telescopic vibration control mechanism connected between the attachment part and the furnace body attachment part; and attached to the blast furnace main body so that the expansion and contraction direction of the vibration control mechanism includes the radial direction of the blast furnace main body. Also good.

(8) A connected seismic control device, a blast furnace mounting portion attached to the blast furnace body; a furnace body mounting portion attached to the furnace body supporting the blast furnace body; the blast furnace mounting portion and the furnace body mounting A telescopic vibration control mechanism connected between the two parts.

According to the present invention, there is provided a blast furnace facility that can cope with thermal deformation and has an efficient seismic performance, and a connected seismic control device that effectively exerts a seismic control effect against earthquake input from all directions in the blast furnace facility. It can be provided, and the seismic performance of the blast furnace equipment can be improved.

1 is a schematic side view of a blast furnace facility 1 according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the blast furnace equipment 1 of FIG. 1 cut along the xx plane. It is the schematic of the connection damping device 20 which concerns on one Embodiment of this invention. 1 is a perspective view of a connected vibration control device 20 according to an embodiment of the present invention attached to a blast furnace body 11. It is a side view of the blast furnace attachment part 21 of the connection seismic control apparatus 20 which concerns on one Embodiment of this invention attached to the blast furnace main body 11. FIG. It is a side view of the furnace body attachment part 22 of the connection seismic control device 20 which concerns on one Embodiment of this invention attached to the furnace body metal 12. It is the schematic of the connection damping device 20 which concerns on one Embodiment of this invention. It is a perspective view of the connection damping device 20 concerning one embodiment of the present invention at the time of using ball joint 45. It is explanatory drawing which shows the example of arrangement | positioning of the connection damping device. FIG. 6 is a perspective view of a coupled vibration control device 20 according to an embodiment of the present invention attached between a blast furnace body 11 and a furnace body rod 12 as shown in FIG. 5. It is a perspective view of the connection damping device 20 concerning one embodiment of the present invention at the time of using a ball joint as a connection member. It is explanatory drawing which shows the example of arrangement | positioning of the connection damping device. It is the schematic of the blast furnace equipment 1 which showed the position which installs the connection damping device 20. FIG. It is a figure which shows the analysis result of an Example. It is the schematic which represented the assumed value of the burden load concerning the blast furnace foundation 10 at the time of an earthquake in the case where the present blast furnace equipment 1 was repaired, with a bar graph.

Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings. In addition, in this specification and drawing, about the component which has the substantially same function structure, duplication description is abbreviate | omitted by attaching | subjecting the same code | symbol.

FIG. 1 is a schematic side view of a blast furnace facility 1 according to an embodiment of the present invention. The blast furnace facility 1 includes a substantially cylindrical blast furnace body 11 provided on an upper portion of the facility foundation 10, a furnace body 12 surrounding the blast furnace body 11, and a connected vibration control device 20. The furnace shell 12 is set higher than the blast furnace main body 11 in order to support a raw material charging facility for supplying the raw material to the blast furnace main body 11. Moreover, the furnace body rod 12 is comprised from the furnace body body 12a and the floor beam 12b. The floor beams 12b support a work floor (not shown) and are provided at a plurality of heights so as to surround the blast furnace body 11.

In the gap formed between the blast furnace main body 11 and the floor beam 12b at a position (height) of ½ or more of the height of the blast furnace main body 11, the blast furnace main body 11 and the furnace body rod 12 (floor beam 12b) A plurality of connected vibration control devices 20 are provided. FIG. 2 is a cross-sectional view of the blast furnace equipment 1 of FIG. 1 cut along the xx plane. In the gap between the outer peripheral surface of the blast furnace main body 11 and the inner surface of the floor beam 12b, a connected vibration control device 20 is provided. In one embodiment of the present invention, ten connected vibration control devices 20 are used so that a vibration control mechanism 23 to be described later is arranged circumferentially along the outer periphery of the blast furnace body 11. In addition, in the example shown by FIG. 2, although the connection damping device 20 was provided in ten places, it is not limited to ten places.

FIG. 3A is a schematic diagram showing a coupled vibration control device 20 according to an embodiment of the present invention. As shown in FIG. 3A, the connected vibration control device 20 includes a blast furnace mounting portion 21, a furnace body mounting portion 22, and a telescopic vibration control mechanism 23. The vibration control mechanism 23 is connected between the blast furnace mounting portion and the furnace body mounting portion.

The blast furnace mounting portion 21 has a three-layer configuration including a blast furnace side mounting plate 30, a low friction plate 31, and a base plate 32. The low friction plate 31 is disposed between the blast furnace side mounting plate 30 and the base plate 32 and attached to the base plate 32. The blast furnace side mounting plate 30 (blast furnace mounting portion 21) is connected to one end (first end) of the vibration control mechanism 23 by a pin joint 25 that is a connecting member so that the vibration control mechanism 23 can rotate in a horizontal plane. . Further, the blast furnace side mounting plate 30 is provided with a long hole 35 extending in the vertical direction (vertical direction). A joining bolt 36 fixed to the base plate 32 and the low friction plate 31 is inserted into the long hole 35. Therefore, the blast furnace side mounting plate 30 can move in the vertical direction (vertical direction) while being in surface contact with the low friction plate 31. Further, the blast furnace mounting portion 21 is separable between the blast furnace side mounting plate 30 and the low friction plate 31.

Similarly, the furnace body saddle mounting portion 22 is composed of a saddle side mounting plate 40 and a saddle side base plate 46. This saddle side mounting plate 40 (furnace rod mounting part 22) is connected to the other end (second end) of the vibration control mechanism 23 by a pin joint 26 which is a connecting member. Further, the furnace body saddle mounting portion 22 is separable between the saddle side mounting plate 40 and the saddle side base plate 46. The heel side mounting plate 40 is fixed to the heel side base plate 46 by the joining bolt 41.

FIG. 3B is a perspective view of the coupled vibration control device 20 according to the embodiment of the present invention attached between the blast furnace body 11 and the furnace shell 12 as shown in FIG. FIG. 3C is a side view of the blast furnace attachment portion 21 attached to the blast furnace main body 11 (viewed from the circumferential direction of the blast furnace main body 11). Further, FIG. 3D is a side view of the furnace shell attachment portion 22 attached to the furnace shell 12 (a view seen from the circumferential direction of the blast furnace body 11). As shown in FIGS. 3B and 3C, the base plate 32 (blast furnace mounting portion 21) is fixed to the outer peripheral surface of the blast furnace main body 11 by a support member 33. Similarly, as shown in FIG. 3B and FIG. 3D, the heel side base plate 46 (furnace ridge mounting portion 22) is attached to the inner side surface of the floor beam 12 b (furnace ridge 12) by the heel side support member 47. Since the coupled vibration control device 20 according to an embodiment of the present invention is configured as described above, depending on the size of the gap between the outer peripheral surface of the blast furnace body 11 and the inner surface of the floor beam 12b, the blast furnace It is possible to easily attach the connected vibration control device 20 between the main body 11 and the floor beam 12b.

The vibration control mechanism 23 plays a role of absorbing vibration energy between the blast furnace body 11 and the furnace body 12. Therefore, as the vibration control mechanism 23, for example, a telescopic member such as a hydraulic damper, an air damper, a steel hysteresis damper, and a viscoelastic damper is used. Moreover, below, the arrangement | positioning method of the connection damping device 20 is demonstrated on the basis of the expansion-contraction direction L of this damping mechanism 23. FIG. For example, in FIG. 2, the connected vibration control device 20 is arranged so that the expansion / contraction direction L of the vibration control mechanism 23 substantially coincides with the circumferential direction of the blast furnace body 11.

In the blast furnace facility 1 according to the embodiment of the present invention configured as described above, when there is an earthquake input, a seismic control effect is obtained by the effect of the connected seismic control device 20. That is, the seismic control mechanism 23 provided in each connected seismic control device 20 expands and contracts with respect to horizontal seismic input. The vibration control mechanism 23 absorbs the vibration energy in the horizontal direction between the blast furnace body 11 and the furnace shell 12 and exhibits a horizontal vibration control effect. In this case, since a plurality of seismic control mechanisms 23 are provided circumferentially along the outer periphery of the blast furnace main body 11, the seismic control mechanisms 23 of the connected seismic control devices 20 can input seismic inputs in all directions within the horizontal plane. Can be absorbed. On the other hand, for vertical earthquake input, the blast furnace side mounting plate 30 moves in the vertical direction while being in surface contact with the low friction plate 31 in the blast furnace mounting portion 21 of each coupled vibration control device 20. That is, the blast furnace mounting portion 21 is mounted so that the vibration control mechanism 23 is movable in the vertical direction with respect to the blast furnace main body 11. By the blast furnace mounting portion 21 and the vibration control mechanism 23, the vibration energy in the vertical direction between the blast furnace main body 11 and the furnace body rod 12 is absorbed, and a vertical vibration control effect is obtained. Therefore, when an earthquake occurs, both horizontal and vertical displacements generated in the blast furnace facility 1 (particularly the furnace body 12) are absorbed by the plurality of connected vibration control devices 20, and the seismic force applied to the blast furnace facility 1 is reduced.

Here, the blast furnace side mounting plate 30 moves in the vertical direction while being in surface contact with the low friction plate 31. For this reason, if, for example, a Teflon (registered trademark) plate, a SUS plate, or the like is used as the low friction plate 31, the friction coefficient between the blast furnace side mounting plate 30 and the low friction plate 31 can be lowered, and the connected vibration control device 20 is damaged. Etc. can be avoided.

Further, when the blast furnace facility 1 is operated, the blast furnace main body 11 may be thermally deformed by about 100 mm due to heat in the furnace. However, pin joints 25 and 26 are used for mounting the connected vibration control device 20, and a low friction plate 31 that can flexibly cope with thermal deformation is provided between the blast furnace side mounting plate 30 and the outer peripheral surface of the blast furnace main body 11. Thus, damage to the vibration control mechanism 23 due to thermal deformation of the blast furnace main body 11 during operation of the blast furnace equipment 1 is prevented. Similarly, damage to the vibration control mechanism 23 due to thermal deformation of the blast furnace main body 11 due to cooling when the operation of the blast furnace facility 1 is stopped is also prevented.

Also, in the blast furnace facility 1, remodeling work is performed as appropriate to increase the capacity of the blast furnace and improve the operation efficiency. Since the seismic performance of the blast furnace facility 1 is improved by using the connected seismic control device 20 according to the embodiment of the present invention, the scale of the seismic reinforcement work is reduced as compared with the prior art, and the construction period, construction cost, etc. are improved. Can be planned. Moreover, since the load concerning the blast furnace equipment foundation 10 can be reduced during the seismic reinforcement work, the reinforcement of the equipment foundation 10 can be reduced. Similarly, in the blast furnace new construction, it is possible to improve the efficiency in terms of construction period and construction cost.

In the above embodiment, the pin joint 25 and the pin joint 26 are used for the connection between the vibration control mechanism 23 and the blast furnace body 11 and the connection between the vibration control mechanism 23 and the furnace body 12, respectively. However, the present invention is not limited to this connection method (connection structure). For example, as shown in FIG. 4A, a ball joint 45 may be used for the connection between the blast furnace mounting portion 21 and the vibration control mechanism 23 and the connection between the rod mounting portion 22 and the vibration control mechanism 23. In this case, the ball joint body 45 a is directly installed on the blast furnace side mounting plate 30 and the heel side mounting plate 40. Since the arm 45b of the ball joint 45 is rotatable in all directions (in the horizontal plane and in the vertical plane), the blast furnace side mounting plate 30 is directly fixed to the base plate 32 by the joining bolt 36, and the low friction plate 31 is omitted. Also good. That is, a connecting member such as a pin joint or a ball joint and the blast furnace mounting portion 21 or the rod mounting portion 22 may be combined so that the vibration control mechanism 23 can expand and contract in all directions (horizontal direction and vertical direction). However, for the connection between the vibration control mechanism 23 and the blast furnace main body 11 and the connection between the vibration control mechanism 23 and the furnace body rod 12, it is preferable to use a connection member having at least a shaft (arm) that can rotate in a horizontal plane.

FIG. 4B is a perspective view of the coupled vibration control device 20 according to an embodiment of the present invention when a ball joint 45 is used as the coupling member. As shown in FIG. 4B, the blast furnace side mounting plate 30 (blast furnace mounting portion 21) and the slag side mounting plate 40 (saddle mounting portion 22) are fixed to the blast furnace main body 11 and the furnace body pit 12 (floor beam 12b), respectively. Yes. However, since the vibration control mechanism 23 of the coupled vibration control device 20 can be expanded and contracted in all directions (horizontal direction and vertical direction) by the ball joint 45, a vibration control effect is exhibited with respect to earthquake input from all directions.

Further, in the above embodiment, as shown in FIG. 2, the connected vibration control device 20 is arranged so that the vibration control mechanism 23 is along the circumferential direction of the blast furnace body 11. It is not limited to. An example will be described below with reference to FIG.

FIG. 5 is an explanatory diagram showing an arrangement example of the connected vibration control device 20. FIG. 6A is a perspective view of the coupled vibration control device 20 according to one embodiment of the present invention attached between the blast furnace main body 11 and the furnace body rod 12 as shown in FIG. FIG. 6B is a perspective view of the coupled vibration control device 20 according to an embodiment of the present invention when a ball joint is used as the coupling member. In the embodiment shown in FIG. 5, the plurality of coupled vibration control devices 20 (9 locations in FIG. 5) are arranged such that the expansion / contraction direction L of the vibration control mechanism 23 is the radial direction of the blast furnace main body 11. Also in this arrangement, as in the embodiment shown in FIG. 2, when an earthquake occurs, horizontal and vertical displacements generated in the blast furnace equipment 1 (particularly the furnace body 12) are absorbed by the plurality of coupled vibration control devices 20, Seismic force applied to the blast furnace facility 1 is reduced. 5 and 6A, the pin joint 25, the pin joint 26, and the vibration control mechanism 23 are arranged on a straight line. Therefore, in the case of the embodiment shown in FIG. Compared to the above, the connected vibration control device 20 can be easily installed. Furthermore, in the example of arrangement | positioning of the connection damping device 20 shown to FIG. 5, FIG. 6A and FIG. 6B, addition and replacement | exchange of the connection damping device 20 can be performed flexibly.

On the other hand, in the embodiment shown in FIG. 2, FIG. 3A and FIG. 4, the space for installing the connected vibration control device 20 can be reduced. Therefore, it is possible to install a plurality of coupled seismic control devices 20 even in the blast furnace facility 1 having a configuration in which the gap between the blast furnace body 11 and the floor beam 12b is narrow.

That is, in order to make the installation of the coupled vibration control device 20 as easy as possible, the coupled vibration control device 20 may be arranged so that the expansion and contraction direction of the vibration control mechanism 23 includes the radial direction of the blast furnace body 11. Further, the connected vibration control device 20 may be arranged so that the expansion and contraction direction of the vibration control mechanism 23 includes the circumferential direction of the blast furnace main body 11 according to the space between the blast furnace main body 11 and the floor beam 12b. Thus, the angle formed by the expansion / contraction direction of the vibration control mechanism 23 and the radial direction of the blast furnace main body 11 can be arbitrarily determined according to the gap between the blast furnace main body 11 and the floor beam 12b. Note that the embodiment shown in FIG. 2 and the embodiment shown in FIG. 5 may be combined.

Moreover, it is preferable that a plurality of the connected vibration control devices 20 are provided in the blast furnace facility 1. In this case, at least two of the plurality of coupled vibration control devices 20 may be mounted on the outer peripheral surface of the blast furnace main body 11 so as to be substantially orthogonal to cope with earthquake input from all directions in the horizontal plane. preferable. Therefore, for example, as shown in FIG. 7, the number of connected vibration control devices 20 may be two.

The present inventors analyzed seismic response when the connected vibration control device 20 shown in the above embodiment is installed at each height of the blast furnace in the blast furnace equipment 1 of the ironworks. The analysis results will be described below with reference to the drawings.

FIG. 8 is a schematic diagram of the blast furnace equipment 1 showing the position where the connected vibration control device 20 is installed. The height of the blast furnace body 11 is about 50 m. Moreover, the installation location of the connection damping device 20 is one of the positions of the 25 m floor, 35 m floor, 41 m floor, and 49 m floor in the furnace body 12. Furthermore, the arrangement | positioning method of the connection damping device 20 is the same as embodiment shown in FIG. Under such conditions, the horizontal displacement of the blast furnace body 11 and the furnace body 12 during the earthquake was analyzed. FIG. 9 is a graph showing the analysis result. In addition, the assumed level of the earthquake is 25 cm / s, 200 gal, and seismic intensity 5+.

As shown in FIG. 9, the horizontal displacement of the blast furnace body 11 is smaller than the horizontal displacement of the furnace body 12. In addition, since the horizontal displacement of the blast furnace main body 11 is hardly dependent on the installation location (installation height) of the connection seismic control apparatus 20, it is represented by one curve data. Further, as shown in FIG. 9, the horizontal displacement of the furnace shell 12 when the coupled vibration control device 20 is installed at the position of the 25 m floor is 27. 4% reduction. Similarly, when the connected vibration control device 20 was installed at a position of 35 m floor, the horizontal displacement of the furnace shell 12 was reduced by 48.8%. Furthermore, when the connected vibration control device 20 was installed at a position of 41 m floor or 49 m floor, the horizontal displacement of the furnace shell 12 was reduced by 58% or more. From this analysis result, it was found that the preferred installation position of the coupled vibration control device 20 is as follows. That is, the installation position of the connected vibration control device 20 is preferably a height (position) of ½ or more of the height of the blast furnace body 11. Further, the installation position of the connected vibration control device 20 is more preferably a position having a height of 35 m floor (a height of 35 m from the bottom of the blast furnace body 11) or more.

In addition, FIG. 10 shows a schematic diagram in which the load applied to the blast furnace foundation 10 in the event of an earthquake is represented by a bar graph when the existing blast furnace facility 1 is modified to be expanded. Here, in the comparative example indicated by “a”, the blast furnace equipment 1 was modified without installing the connected vibration control device 20. In the example shown by “b”, the blast furnace facility 1 was modified by installing the connected vibration control device 20 of one embodiment of the present invention shown in FIG. 3A on a 41 m floor. Note that “w” is the state (current state) before the remodeling.

As shown in FIG. 10, in the comparative example, the strength burden on the blast furnace foundation 10 is greatly increased due to expansion and remodeling, and large-scale reinforcement is required. However, as in the embodiment, even when the retrofitting is performed by adopting the seismic damping structure of the present invention, the burden load applied to the blast furnace foundation 10 has an allowable value of strength required for the blast furnace foundation 10. Satisfied (below tolerance) In addition, in the Example, it turned out that the effect which reduces the burden load concerning the blast furnace foundation 10 can be exhibited rather than the present condition. Similarly, since the seismic energy input to the furnace body 12 is reduced, it has been found that the reinforcement of main structural members such as columns, beams, and braces can be significantly reduced.

As mentioned above, although an example of embodiment of this invention was demonstrated, this invention is not limited to the form shown by drawing. It is obvious for those skilled in the art that various modifications or modifications can be conceived within the scope of the idea described in the claims, and these naturally belong to the technical scope of the present invention. It is understood.

The present invention can be applied to blast furnace equipment with improved seismic performance, a method for improving seismic performance of blast furnace equipment, and a connected seismic control device that improves seismic performance of blast furnace equipment.

DESCRIPTION OF SYMBOLS 1 Blast furnace equipment 10 Equipment foundation 11 Blast furnace main body 12 Furnace rod 12a Furnace rod main body 12b Floor beam 20 Connection seismic control device 21 Blast furnace mounting part 22 Furnace rod mounting part 23 Damping mechanism 25 Pin joint 26 Pin joint 30 Blast furnace side installation Plate 31 Low friction plate 32 Base plate 33 Support member 35 Slot 36 Joint bolt 40 Side mounting plate 41 Joint bolt 45 Ball joint 45a Ball joint body 45b Arm 46 Side base plate 47 Side support member

Claims

With the blast furnace body;
A furnace shell surrounding the blast furnace body;
A connected vibration control device that is provided at a position of ½ or more of the height of the blast furnace main body and connects between the blast furnace main body and the furnace body rod;
A blast furnace facility characterized by including:
The connected vibration control device
A blast furnace attachment portion attached to the blast furnace body;
A furnace body attachment portion attached to the furnace body furnace;
A telescopic vibration control mechanism connected between the blast furnace mounting portion and the furnace body mounting portion;
Attached to the blast furnace body such that the expansion and contraction direction of the vibration control mechanism includes the circumferential direction of the blast furnace body;
The blast furnace equipment according to claim 1.
The connected vibration control device
A blast furnace attachment portion attached to the blast furnace body;
A furnace body attachment portion attached to the furnace body fence;
A telescopic vibration control mechanism connected between the blast furnace mounting portion and the furnace body mounting portion;
Attached to the blast furnace body such that the expansion and contraction direction of the vibration control mechanism includes the radial direction of the blast furnace body;
The blast furnace equipment according to claim 1.
The blast furnace installation according to claim 2 or 3, wherein the blast furnace mounting portion is attached to the blast furnace main body so that the vibration control mechanism is movable in a vertical direction.
A method for improving the seismic performance of a blast furnace facility comprising a blast furnace body and a furnace body surrounding the blast furnace body,
A method for improving seismic performance, comprising providing a connected vibration control device for connecting the blast furnace main body and the furnace body rod at a position that is at least half the height of the blast furnace main body.
The connected vibration control device
A blast furnace attachment portion attached to the blast furnace body;
A furnace body attachment portion attached to the furnace body fence;
A telescopic vibration control mechanism connected between the blast furnace mounting portion and the furnace body mounting portion;
Attached to the blast furnace body such that the expansion and contraction direction of the vibration control mechanism includes the circumferential direction of the blast furnace body;
The method for improving seismic performance according to claim 5.
The connected vibration control device
A blast furnace attachment portion attached to the blast furnace body;
A furnace body attachment portion attached to the furnace body furnace;
A telescopic vibration control mechanism connected between the blast furnace mounting portion and the furnace body mounting portion;
Attached to the blast furnace body such that the expansion and contraction direction of the vibration control mechanism includes the radial direction of the blast furnace body;
The method for improving seismic performance according to claim 5.
A blast furnace mounting portion attached to the blast furnace body;
A furnace body attaching portion attached to a furnace body supporting the blast furnace body;
A telescopic vibration control mechanism connected between the blast furnace attachment part and the furnace body attachment part;
A connected vibration control device.