KR101606471B1 - Fastening devices for vessel and vacuum degassing equipment hqving the same - Google Patents

Abstract

The present invention relates to a container fastening apparatus and a vacuum degassing apparatus including the same, and more particularly, to a container fastening apparatus and a vacuum degassing apparatus including the same, which comprises an upper tank including a first joining member opened at a lower portion thereof and provided along an outer circumferential surface thereof, And a sealing member disposed between the first joining member and the second joining member, and a sealing member disposed between the sealing member and the sealing member, A fastening bolt which is disposed on the outside and covers and covers a part of the side surface of the joint portion and a rod which is fixed to cover the through hole formed in the joint portion in a vertical direction and is movable to the through hole, An elastic member which is wound and arranged to be spaced apart from the outer circumferential surface of the rod in a portion of the rod, It is possible to easily fasten and separate the upper tank and the lower tank of the vacuum degassing apparatus and increase the mutual adhesion force so that the vacuum tank The efficiency and productivity of the gas equipment can be increased.

Description

Technical Field [0001] The present invention relates to a vessel tightening apparatus and a vacuum degassing apparatus including the same,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container fastening apparatus and a vacuum degassing apparatus including the same. More particularly, the present invention relates to a container fastening apparatus and a vacuum degassing apparatus including the same, which can easily fasten and separate upper and lower tanks of a vacuum degassing apparatus, Tightening device and a vacuum degassing apparatus including the same.

Generally, molten iron is firstly refined in a converter and then molten steel, and then secondary refined in a vacuum degassing facility (commonly referred to as "RH degassing facility"). The vacuum degassing facility removes the impurities (C, H, N, P, S) contained in the molten steel, corrects the temperature of the molten steel, reflows the molten steel to uniformize the components and temperature of the molten steel Equipment.

In the reflux process of the vacuum degassing apparatus, the deposition tube connected to the lower portion of the vacuum chamber is immersed in the molten steel accommodated in the ladle, and when the reflux gas is blown into the deposition tube, the molten steel rises to the inside of the vacuum chamber through the lower deposition tube do. Thereafter, when the molten steel flows into the vacuum chamber and reaches a predetermined height, the molten steel is naturally lowered by the static pressure of iron, and the molten steel is lowered by the sinking pipe on the opposite side of the immersed pipe to perform reflux operation into the molten steel.

At this time, the vacuum chamber is constituted by the refractory surrounding the inner wall of the iron pipe, and the erosion of the refractory occurs rapidly as the number of times of using the refluxing process of the molten steel at high temperature is increased. Therefore, refractory replacement work of a vacuum tank is required to suppress or prevent a large accident in which molten steel leaks into the refractory erosion site.

In the refractory replacement work of such a vacuum tank, after separating the upper tank and the lower tank constituting the vacuum tank and replacing the refractories therein, a fixing bolt is assembled to the flange surface of the upper tank and the lower tank And the vacuum tank is fastened by the structure. That is, a clamp bolt (C Clamp) which surrounds the upper part of the flange surface of the upper tank and the lower part of the flange surface of the lower tank may be spaced by about 20 to bolt the upper tank and the lower tank to tighten the vacuum tank.

However, in such a method, vibration is repeatedly generated in every channel during processing of molten steel in a high vacuum state, and this vibration is transmitted to a vacuum chamber, a vacuum chamber, and the like during the processing of molten steel. Accordingly, vibration is transmitted to the clamp bolt for clamping the upper and lower tanks, and the bolt is loosened. As a result of the bolt loosening, the molten steel refining may leak to the outside of the vacuum tank, have.

Therefore, during the use of the vacuum degassing facility, the operator is required to constantly check the bolt fastening state of the vacuum tank with the naked eye, thereby causing a problem of reducing the process efficiency of the operator.

KR1997-0039911U KR 2000-0039450 A KR 2007-0084575 A

The present invention provides a container fastening apparatus and a vacuum degassing apparatus including the same that can easily perform separation and fastening of a vacuum degassing apparatus vacuum tank.

The present invention provides a container fastening apparatus and a vacuum degassing apparatus including the same that can increase the adhesion between an upper tank and a lower tank.

The present invention provides a container fastening apparatus and a vacuum degassing apparatus including the same that can reduce the load of a worker and increase the efficiency and productivity of a vacuum degassing apparatus.

The present invention provides a container fastening device capable of providing a stable operating environment and a vacuum degassing facility including the same.

The container fastening device for fastening the mutually abutting joint portions of the detachable container according to the embodiment of the present invention includes a fastening portion including a rod movable in the through hole and covering the through hole formed in the joint portion in a vertical direction, And an elastic member which is wound around the rod and spaced apart from the outer circumferential surface of the rod, and a fixing member which is disposed at a position opposite to the joint and is partly insertable into the rod.

A lower side of the rod may have a fastening hole through which the fastening member can be inserted, and the cross-sectional shape of the fastening hole and the fastening member may be the same.

And a pressure regulator for moving the rod by varying a pressure of the inner space, wherein the rod is disposed at an outer side of the housing , And the other end may be disposed in contact with the inner wall of the housing to divide the inner space.

Wherein the inner space is divided into an upper inner space and a lower inner space with reference to the other end, and the pressure regulator increases and decreases the pressure in any one of the upper inner space and the lower inner space, It can be lowered in the lower direction or raised in the upper direction of the joined portion.

And a second joining member that is separated from the joining portion in the up-and-down direction and has a first joining member formed with a first hole and a second hole disposed below the first joining member and communicating with the first hole, When the pressure regulator is not operated, one end of the rod may be disposed in the first hole of the first joining member.

The contact surface of the fixing member in contact with the contact portion may be formed in a plane, and the contact portion facing the contact surface may be formed with an insertion groove into which the contact surface and a side surface of the fixing member are inserted.

The cross-sectional width of the fixing member may increase in a direction in which the fixing member contacts the joining portion.

Wherein the elastic member has one end connected to the inner bottom surface of the housing and the other end connected to the other end surface of the rod facing the bottom surface, and after the fixing member is inserted into the coupling hole, May have a value smaller than the pitch of the elastic member before the pressure regulator is operated and a value larger than the pitch of the elastic member after the pressure regulator is operated.

The fastening hole may be formed within a range of 10 to 30% from the lower end to the upper end of the rod based on the total length of the rod.

And a control unit for controlling the operation of the fixing unit and the coupling unit in accordance with a signal transmitted from the sensing unit is provided on the outer side of the fixing unit, .

Wherein the housing is provided with a cooling medium accommodating space which is separately provided outside the internal space, and a cooling medium supply unit for supplying a cooling medium is connected to the cooling medium accommodating space, And a cooling medium flow pipe connected at one end to the cooling medium reservoir and at the other end to the cooling medium accommodating space.

Wherein the connecting portion is divided into a first joining member and a second joining member arranged in the vertical direction, and when the rod and the fixing member are engaged, the elastic force of the elastic member applied to the coupling portion, The first and second joining members can be brought into close contact with each other by the force of pushing the two joining members.

A vacuum degassing apparatus according to an embodiment of the present invention includes an upper tank including a first joining member opened at a lower portion thereof along an outer circumferential surface thereof and a lower tank disposed in contact with the opened lower surface thereof to be in contact with the first joining member And a sealing member disposed between the first joining member and the second joining member and disposed outside the sealing member with respect to the vacuum chamber, A fastening bolt for covering and fixing a part of the side surface of the joint, and a container fastening device disposed on the inside of the fastening bolt and the sealing member on the fastening base with respect to the vacuum fastening, at least a part of the fastening bolt passing through the fastening .

A plurality of fastening bolts and a plurality of the container fastening devices may be provided, and a pair of the fastening bolts and the container fastening devices may be spaced apart from each other in the outer circumferential direction of the joining portion.

According to the container fastening device and the vacuum degassing device including the same according to the embodiment of the present invention, the fastening force of the flange portion of the detachable container can be increased and fastened easily, thereby increasing the fastening property of the container .

That is, the fixing member is inserted and fixed to the rod passing through the upper tank and the lower tank constituting the vacuum tank of the vacuum degassing apparatus, and the upper tank and the lower tank are brought into closer contact with each other by the elastic force of the elastic member. Therefore, it is not easy to separate the upper tank and the lower tank unless the fixing member inserted in the direction crossing the rod is removed. Thus, stable vacuum tightening of the vacuum degassing apparatus is performed, have.

Accordingly, when engaging the flange portion only by the C-shaped bolt, it is possible to prevent a mid-to-large accident in which the bolt is separated by the vibration generated in the equipment and the vacuum trough is separated. In order to observe the tightening condition of the vacuum trough, It is possible to reduce the burden to be incurred and ultimately increase the efficiency and productivity of the vacuum degassing facility.

FIG. 1 is a view showing a container fastening apparatus and a vacuum degassing apparatus including the same according to an embodiment of the present invention.
Fig. 2 is an exploded perspective view showing an enlarged view of the joining portion and the container fastening device of Fig. 1. Fig.
Fig. 3 is an enlarged cross-sectional view of the jointed state of Fig. 1; Fig.
4 is a view for explaining the flow of the cooling medium supply unit and the cooling medium according to the embodiment of the present invention.
5 is a view showing a junction according to a modification of the present invention.
FIGS. 6 and 7 are views schematically showing a change relationship between the rod and the elastic member according to the operation of the pressure regulator according to the embodiment of the present invention.
8A to 8C are views sequentially illustrating a method of fastening a vacuum tank of a vacuum degassing apparatus using a container fastening apparatus according to an embodiment of the present invention.

Before describing the embodiments of the present invention in detail with reference to the accompanying drawings, it is to be understood that the invention is not limited to the details of construction and the arrangement of the elements described in the following detailed description or illustrated in the drawings. The invention may be embodied and carried out in other embodiments, and may be carried out in various ways.

Herein, it will be appreciated that the device or component orientation (e.g., "front", "back", "up", "down", "top" Quot ;, "left," " right, "" lateral," and the like) used herein are used merely to simplify the description of the present invention, It will be appreciated that the device or element does not indicate or imply that it should simply have a particular orientation.

Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose. In order to clearly illustrate the embodiments in the drawings, portions not related to the description are omitted, and the size is enlarged to clearly represent the regions, and like reference numerals are assigned to similar portions throughout the specification.

Herein, throughout the specification, when a part is referred to as "including " an element, it is understood that it may include other elements as well, without excluding other elements unless specifically stated otherwise.

The container fastening device is an apparatus for easily tightening and separating the bonding portions formed by the joining of the first and second joining members of each container separated from the detachable container. In the embodiment of the present invention, And the joining portion may be a flange portion formed by joining the first flange of the upper tank and the second flange of the lower tank constituting the vacuum tank. However, the container to which the container fastening device is fastened is not limited to the vacuum container, but can be applied to various places where the fastening force of the fastening part of the separable container requiring vacuum and sealing is increased and fastened. Therefore, in the following, the meaning of the container and the vacuum tank, the joint portion and the flange portion, the first joint member / second joint member, and the first flange / second flange are mixed and used.

Hereinafter, a vacuum tightening apparatus and a tightening method of a vacuum degassing apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG.

FIG. 1 is a view showing a container fastening apparatus and a vacuum degassing apparatus including the same according to an embodiment of the present invention. Fig. 2 is an exploded perspective view showing an enlarged view of the flange portion and the container fastening device of Fig. 1. Fig. Fig. 3 is an enlarged cross-sectional view showing the engaged state of the flange portion of Fig. 1. Fig. 4 is a view for explaining the flow of the cooling medium supply unit and the cooling medium according to the embodiment of the present invention. 5 is a view showing a flange portion according to a modification of the present invention.

The vacuum degassing facility (1) is called RH facility and RH is abbreviation of Rheinstahl-Heraus. The vacuum degassing apparatus 1 is a secondary refining apparatus which is a refining apparatus for refining the molten steel introduced from the converter through a reflux pipe provided in the vacuum degassing apparatus 1, And the deposition pipe 170 separated into the uprising pipe 170a and the downfalling pipe 170b is disposed on the ladle L so that the molten steel M can circulate through the ladle L and the vacuum tank 100 And immersed in the molten steel (M). Vacuum means (not shown) is connected to the vacuum chamber 100 so that the inside of the vacuum chamber 100 is reduced to several tenths of torr by the action of the vacuum means, thereby forming a vacuum atmosphere. The molten steel M in the ladle L rises into the vacuum chamber 100 due to the difference between the atmospheric pressure and the pressure inside the vacuum chamber 100 so that refining of the molten steel M proceeds, Is exhausted to an exhaust duct (not shown) through an exhaust port 190 formed in a side wall of the vacuum chamber 100.

That is, the vacuum degassing apparatus 1 according to the embodiment of the present invention includes an upper tank 110 including a first flange 150a having a lower portion opened along the outer circumferential surface thereof, A vacuum tank 100 constituted by a lower tank 130 including a second flange 150b disposed in contact with the first flange 150a and in contact with the first flange 150a to form the flange 150, A sealing member 600 disposed between the first flange 150a and the second flange 150b and disposed on the outer side of the sealing member 600 with respect to the vacuum chamber 100 to cover a part of the side surface of the flange 150 Is disposed inside the sealing member 600 and the fastening bolt 700 on the flange portion 150 with respect to the fastening bolts 700 and the vacuum tank 100 which are fixed and at least part of the fastening bolts 700 penetrate through the flange portion 150 And a container inserting apparatus 1000 to be disposed.

The flange portion 150 is divided into a first flange 150a of the upper tank 110 and a second flange 150b of the lower tank 130. The lower surface of the first flange 150a and the lower surface of the second flange 150b, May be arranged in contact with each other. That is, the first flange 150a and the second flange 150b protrude from the outer wall of the upper tank 110 and the lower tank 130, respectively. The sealing member 600, the fastening bolt 700, And the container fastening device 1000 can be installed. The through hole 155 is formed in the flange portion 150 in the up and down direction and the through hole 155 has a first hole 155a formed to penetrate the first flange 150a in the up and down direction, And the second hole 155b, which passes through the second flange 150b in the vertical direction, communicate with each other. In addition, receiving grooves (not shown) in which the sealing member 600 is disposed may be formed on the opposite surfaces of the first flange 150a and the second flange 150b, respectively.

The sealing member 600 is disposed between the first flange 150a and the second flange 150b so that when the first flange 150a and the second flange 150b approach and come into contact with each other, To prevent or prevent occurrence of separation. The sealing member 600 may be disposed on the outer side in the extending direction of the first flange 150a and the second flange 150b with reference to the position of the vacuum chamber 100. [ That is, the first flange 150a and the second flange 150b protruding outward of the vacuum chamber 100 may be disposed at a farther outer portion from the vacuum chamber 100 at the center with respect to the protruding length of the second flange 150b.

The fastening bolt 700 is for fixing at least a part of the side surface of the flange portion 150 and fixing the flange portion 150. The fastening bolt 700 is formed by part of the upper surface and side surface of the first flange 150a, The first flange 150a and the second flange 150b can be tightly fitted and tightened by tightly fastening the bolt.

The container tightening apparatus 1000 is disposed on the flange portion 150 on the inner side of the sealing member 600 and the fastening bolt 700 with respect to the vacuum chamber 100, And includes a fastening part 200 including a rod 230 which is fixed to the flange part 150 so as to cover the through hole 155 penetrating in the up and down direction and is movable to the through hole 155, And an elastic member 300 wound around the rod 230 and spaced from the outer circumferential surface of the rod 230 and a fixing member 410 disposed at a position opposite to the coupling unit 200 and partially insertable into the rod 230 (Not shown). That is, the fastening device 1000 is an apparatus for fastening the first flange 150a of the upper tank 110 and the second flange 150b of the lower tank 130 in a state in which the tightening force is increased. The container fastening apparatus 1000 is disposed in the flange portion 150 at a position closer to the vacuum chamber 100 than the sealing member 600 and the fastening bolt 700, (150) can be partially increased.

The fastening portion 200 includes a rod that is seated on the flange portion 150 and is movable to the through hole 155. More specifically, the fastening portion 200 is seated on the upper surface of the first flange 150a, And includes a rod that is movable up and down through the through hole 155 formed by the first hole 155a and the second hole 155b. The fastening part 200 includes a housing 210 which is disposed on one side of the flange part 150 and in which an internal space 212 is formed and a fastening part 210 for moving the rod 230 by changing the pressure of the internal space 212 And a pressure regulator 250.

The housing 210 is disposed on one side of the flange portion 150 and forms an internal space 212 for accommodating at least a portion of the rod 230 therein. The housing 210 is smaller than the plane size of the flange portion 150 Can be formed into a cylindrical shape having a planar size and can be seated on the flange portion (150). A hole may be formed on the lower surface of the housing 210 to allow the rod 230 to move, and the rod 230 may protrude from the housing 210 through the hole. At this time, the housing 210 may be divided into an upper internal space 212a and a lower internal space 212b by the other end of the rod 230, which will be described in more detail in the description of the rod 230 .

In the meantime, although the housing 210 in the embodiment of the present invention is formed integrally, that is, it is formed as a cylindrical shape whose upper surface is not opened, the housing 210 covers the upper surface opened and opened, And a lid (not shown) for sealing the space 212. In the case where the cover is provided and the housing is detachably formed, the state of the inside of the housing 210 can be easily checked by separating the cover, thereby facilitating maintenance.

The rod 230 includes a fastening hole 235 which is formed in a bar formed by extending a predetermined length in the vertical direction and is disposed inside and outside the housing 210 and formed to penetrate the side surface at the lower side. More specifically, the rod 230 has a predetermined length, a predetermined region of one end is disposed outside the housing 210, and a predetermined region of the other end is disposed in the internal space 212 of the housing 210. One end 231 of the rod 230 is formed to have the same size as the plane size of the through hole 155 so that one end 231 can move within the through hole 155, Can be formed with a small planar size within 5% of the planar size. When the planar size of one end 231 of the rod 230 is formed with a plane size that is smaller than the plane size of the through hole 155 by 5% or more, the distance between the inner circumferential surface of the through hole 155 and the outer circumferential surface of the rod 230 Even if the rod 230 and the fixing member 410 are coupled by an increase in the spacing distance of the rod 230, the rod 230 may move within the spacing space, thereby reducing the stability of the fastening.

The other end 233 of the rod 230 is disposed in the inner space 212 and is disposed in contact with the innermost sidewall of the housing 210 to divide the inner space 212. That is, the other end 233 has an upper internal space 212a having a predetermined area from the upper surface to the upper side of the other end 233 and a predetermined area from the lower surface of the other end 233 downward And the lower internal space 212b. At this time, the plane size of the other end 233 may be the same as the plane size formed by the innermost sidewall of the housing 210, and more specifically, the upper inner space 212a divided by the other end 233, And may be disposed in the inner space 212 in a planar size enough to seal the inner space 212b. The upper inner space 212a and the lower inner space 212b divided by the other end 233 are not limited to the region shown in FIG. 3, and the rod 230 can be separated by the pressure regulator 250, When moved, they can have changed areas.

The fastening hole 235 is formed through the side surface of the rod 230 so as to insert a fixing member 410 to be described later. More specifically, the fastening hole 235 is formed at one end of the rod 230 disposed outside the housing 210 And may be formed on the region of the rod 230 that is protruded to the lower portion of the flange portion 150 by the movement of the rod 230. At this time, the fastening hole 235 may be formed through the side surface within a range of 10 to 30% from the lower end of the rod 230 to the upper end. Here, when the fastening hole 235 is formed at a height higher than 30% from the lower end of the rod 230, the rod 230 is lowered so that the fastening hole 235 appears at the lower side of the flange portion 150 The efficiency of the process is reduced because the driving force is required to a great extent and when the fastening hole 235 is formed at a height lower than 20% from the lower end of the rod 230, It is not easy for the rod 230 to be stably arranged because the rod 230 is larger than the rod 230 disposed below and the rod 230 is not stably placed in the housing 210. When the uppermost end of the fastening hole 235 is disposed at a position in parallel with the lower surface of the flange portion 150, the fastening hole 235 is formed in the center of the rod 230 May be formed on the rod 230 at a position disposed in parallel with the bottom surface of the housing 210. [

The pressure regulator 250 is a means for moving the rod 230 by varying the pressure in the inner space 212 of the housing 210 and the pressure difference between the upper inner space 212a and the lower inner space 212b The rod 230 can be adjusted to move downward through the through hole 155 in the lower direction of the flange portion 150 or upward toward the upper side of the flange portion 150. The pressure regulator 250 is not limited to the pressure regulator 250. The pressure regulator 250 may be a pressure regulator such as a pressure regulator, Various pressure providing means capable of moving the pressing member 230 in the up and down direction can be used. The pressure regulator 250 may be separated from the housing 210 until the maintenance of the upper tank 110 and the lower tank 130 is required after the flange 150 is fastened. That is, since the pressure regulator 250 is detachably connected to the housing 210, the pressure regulator 250 can be provided only at the time when the upper tank 110 and the lower tank 130 are coupled to or separated from each other. Space is not always required and the efficiency of the space in which the process is performed can be increased.

In the embodiment of the present invention, the pressure regulator 250 is shown to move the rod 230 by changing the pressure in the upper internal space 212a of the internal space 212, And the movement of the rod 230 can be controlled by adjusting the pressure of one of the lower internal spaces 212b.

The elastic member 300 is disposed inside the fastening portion 200 to provide an elastic force to increase the urging force of the flange portion 150. [ That is, the elastic member 300 is wound and arranged in a region of the rod 230 disposed inside the housing 210 in the inner space 212, one end connected to the inner bottom surface of the housing 210, And is connected to one surface of the other end 233 of the rod 230 facing the inner bottom surface of the housing 210. Generally, the elastic member 300 has a predetermined pitch, and the elastic member 300 does not exhibit the elastic force in a state in which the pitch is not changed. However, as the pitch value of the elastic member 300 (that is, the total height of the elastic member 300) is reduced, the elastic member 300 exhibits an elastic force to return to its original size. In the embodiment of the present invention The adhesion force between the first flange 150a and the second flange 150b can be further increased by the elastic force appearing in the elastic member 300. [

The type and material of the elastic member 3000 may be selected according to the load and size of the container to be fastened. In other words. In general, a coil spring can be selected and used to push out a small load, and a disk spring can be selected and used to push a relatively large load. In this case, when the dish springs are selected and used, the scale energy per unit volume of the dish springs can be increased compared to the coil springs due to the characteristics of the dish springs, so that a large load capacity can be exhibited with a short stroke in a small space. That is, when the present invention is applied to the present invention, a plurality of diaphragm springs may be provided and stacked so as to support the lower surface of the other end 233 of the rod. Here, the pitch of the diaphragm spring may be a distance from the lowermost end to the uppermost end with respect to a single (one) disc spring. Therefore, although the types of elastic members 300 to be selected may vary depending on the types of containers, the present invention has the same purpose of increasing the adhesion force of the containers due to the generation of elastic forces due to changes in the pitches of the different elastic members .

The change of the pitch of the elastic member 300 changes according to the area of the rod 230 disposed in the housing 210. This is because the pressure inside the upper internal space 212a The pressure change will be described later again.

The fixing unit 400 is configured to include a fixing member 410 disposed at an opposite position of the coupling unit 200 and partially insertable into the coupling hole 235 of the rod 230. When the fastening portion 200 is provided on the upper surface of the flange portion 150, the fixing portion 400 is disposed at a position close to the lower surface of the flange portion 150 facing the placement surface of the fastening portion 200, The fixing member 410 is inserted into the rod 230 when the rod 230 is projected to the lower portion of the flange 150 through the through hole 155 of the fastener 150, It is possible to allow the connection unit 400 to join.

The fixing member 410 is inserted into the fastening hole 235 and is formed with a contact surface 415 at least partially in contact with the flange portion 150. That is, in the fastening hole 235, at least a part of the contact surface 415 is disposed in contact with the lower surface of the flange portion 150, thereby preventing the rod 230 protruding to the lower portion of the flange portion 150 from rising again, The flange 150a and the second flange 150b can be tightly coupled to each other. At this time, the fixing member 410 may be formed to have the same cross-sectional shape as the cross-sectional shape of the fastening hole 235 and may be inserted into the fastening hole 235 so as not to move. The width of the cross section of the fixing member 410 may be formed such that the width of the cross section increases toward the flange portion 150 (that is, toward the contact surface 415). Since the weight of the fixing member 410 is concentrated to the upper side by forming the fixing member 410 as described above, the weight of the fixing member 410 in the downward direction prevents the fixing member 410 from being stuck in the downward direction, can do.

The driving unit 430 is provided to move the fixing member 410 in a direction intersecting the moving direction of the rod 230 and moves the fixing member 410 in a direction crossing the moving direction of the rod 230 by a predetermined distance It is possible to prevent the fixing member 410 from being inserted or inserted into the fastening hole 235 by reciprocating.

The contact surface 415 of the fixing member 410 and the upper end of the fastening hole 235 are not limited to the shape of the fastening hole 235 and the fastening member 410 in the embodiment of the present invention, But it may be formed in a variety of shapes so that the fixing hole 410 and the fixing hole 410 can be more stably combined.

A contact surface 415 and an insertion groove 157 for inserting a part of the side surface of the fixing member 410 are formed on the lower surface of the flange portion 150 facing the contact surface 415 of the fixing member 410 It is possible. In this case, since the insertion groove 157 is formed in the flange portion 150, the fixing member 410 can be inserted into the flange portion 150 as well as inserted into the flange portion 235, The coupling area for coupling the flange part 400 with the flange part 150 can be increased, so that the coupling can be stably performed.

Meanwhile, the fastening device 1000 formed as described above includes a sensing unit (not shown) and a controller (not shown) for sensing the operation of the fastening unit 200 and the fixing unit 400 and transmitting an operation signal to each configuration, May be additionally provided so that the apparatus is not passively performed by the operator. In addition, a cooling medium supply unit 500 for reducing the heat load of the apparatus exposed to high temperatures due to the characteristics of the facility may be additionally provided. Hereinafter, the respective additional configurations will be described.

The sensing unit may be provided on the outer side of the fixing unit 400 to sense the penetration of the through hole 155 of the rod 230. More specifically, the sensing unit may be provided on the lower surface of the second flange 150b of the flange 150, Through which the rod 230 protrudes from the lower surface of the second flange 150b through the through hole 155 formed in the flange portion 150 so that the fixing member 410 is fixed to the rod 230 May be provided to transmit a signal to perform an operation to be inserted. The sensing unit may be a position sensor or a light irradiation sensor for detecting the presence or absence of the rod 230 on the lower surface of the second flange 150b and the rod 230 may pass through the through hole 155 to the second flange 150b 150b to the fixing unit 400 through the control unit.

The control unit may be provided to transmit a signal for moving the fixing member 410 of the fixing unit 400 by a signal sensed by the sensing unit. That is, when the signal of the sensing unit sensed that the rod 230 moves in the through hole 155 and protrudes to the lower portion of the second flange 150b for the fastening of the flange unit 150 is transmitted to the control unit, A signal for moving the fixing member 410 is transmitted to the driver of the fixing unit 400 so that the member 410 can move and be inserted into the fastening hole 235 of the rod 230. The fixing member 410 may be inserted into the coupling hole 235 to allow the coupling unit 200 and the fixing unit 400 to be coupled to each other. The control unit not only transmits a signal for inserting the fixing member 410 into the fastening hole 235 but also transmits the signal for inserting the fastening member 410 and the rod 230 to separate the first flange 150a and the second flange 150b And may transmit a signal for moving the rod 230 so as not to be inserted into the through hole 155 of the first and second flanges 150b. At this time, the operator manually inputs the separation timing of the flange portion 150, and the control portion can transmit a signal so that the rod 230 can be raised by the pressure regulator 250 of the coupling portion 200.

The cooling medium supply unit 500 is configured such that when the fastening part 200 seated on the flange part 150 is exposed to a high temperature due to the characteristics of the vacuum degassing equipment 1, The housing 210 may be provided with a cooling medium. The cooling medium supply unit 500 includes a cooling medium reservoir 510 in which a cooling medium is accommodated, one end connected to the cooling medium reservoir 510, and the other end connected to the housing 210, And a tube for cooling medium which forms a path.

At this time, the cooling medium accommodating space 214 is separately formed in the housing 210 of the coupling part 200 to which the cooling medium supply unit 500 is connected so that the cooling medium can be supplied to the separated space from the internal space 212 That is, the inner space 212 of the housing 210 and the cooling medium accommodating space 214 may not be separated from each other to communicate with each other). This is because the pressure in the inner space 212 is adjusted to couple the rod 230 and the fixing member 410 and the rod 230 has to move so that the pressure regulator is connected to the inner space 212, It is preferable that the cooling medium supply unit 500 is connected to the rod 214 to couple the rod 230 and the fixing member 410 and the temperature of the housing 210 can be lowered.

The cooling medium reservoir 510 is provided to receive the cooling medium supplied to the cooling medium accommodating space 214, and an apparatus capable of continuously or repeatedly supplying a certain amount of cooling medium may be used. Also, the cooling medium reservoir may be a device capable of receiving the cooling medium circulated through the cooling medium accommodating space 214 again, and re-supplying the cooling medium to a predetermined temperature. As described above, it is possible to increase the circulating rate of the cooling medium by supplying the cooling medium, then storing it again and supplying it again. Further, only a predetermined amount of cooling medium for supplying the cooling medium accommodating space 214 may be provided.

The cooling medium light pipe 530 forms a path through which the cooling medium moves. That is, the cooling medium gas pipe 530 can form a path through which the cooling medium can move from the cooling medium reservoir 510 to the cooling medium accommodating space 214. At this time, the cooling medium diesel pipe 530 circulates through the cooling medium supply tube 531 and the cooling medium accommodating space 214 via the cooling medium supplied from the cooling medium reservoir 510 to the cooling medium accommodating space 214 And a cooling medium discharge pipe 533 through which the cooling medium is discharged and transferred to the cooling medium reservoir 510.

On the other hand, the cooling medium is not limited to any particular one but may be a medium which circulates like cooling water and cooling gas, reduces the temperature, and stably circulates in the cooling medium receiving space 214. In the embodiment of the present invention, the cooling medium circulates through the cooling medium accommodating space 214 and then returns to the cooling medium reservoir 510 through the cooling medium discharge pipe 533. However, A cooling medium receiver (not shown) may be provided. In this case, the cooling medium discharge pipe 533 may be connected to the cooling medium container. As described above, the configuration of the cooling medium supply unit 500 is not limited to the embodiment of the present invention, but can be modified into various forms in which the cooling medium is supplied to the cooling medium accommodating space 214 and the supplied cooling medium can be discharged .

As described above, the vacuum degassing apparatus 1 including the container fastening apparatus 1000 is configured such that some of the fastening portions 200 of the container fastening apparatus 1000 pass through the flange portion 150, The first flange 150a and the second flange 150b are not separated from each other unless the fixing member 410 is separated or lost in the fastening hole 235. [ Thus, the partial tightening and tightening of the first flange 150a and the second flange 150b can be performed by the container fastening apparatus 1000, and the sealing member 600 and the fastening bolts 700 can be used to provide an even adhesion to the protruding portion of the flange portion 150, and the tightness of the vacuum chamber 100 can be further increased. At this time, a plurality of the fastening bolts 700 and the container fastening devices 1000 described above are provided so that the fastening bolts 700 and the container fastening devices 1000, which form a pair along the outer circumferential direction of the flange portion 150, .

6 to 8, the position of the rod 230 in the inner space 212 and the pitch change of the elastic member 300 in accordance with the operation of the pressure regulator 250 according to the embodiment of the present invention A method of joining the flange portion 150 according to the operating state of the fastening device 1000 will be described.

Here, FIGS. 6 and 7 are views schematically showing a change relationship between the rod and the elastic member according to the operation of the pressure regulator according to the embodiment of the present invention. 6 (a) shows the upper internal space pressure and the pitch of the elastic member when the pressure regulator is not in operation, and FIG. 6 (b) 6 (c) shows the pressure in the upper inner space and the pitch change of the elastic member when the rod and the fixing member are in the OFF state in which the pressure regulator does not operate after engagement of the fixing member . 8A to 8C are views sequentially illustrating a method of fastening a vacuum tank of a vacuum degassing apparatus according to an embodiment of the present invention.

First, in the vacuum chamber 100, since the refractory process of the molten steel (M) at a high temperature is carried out, the contact between the molten refractory and the molten steel (M) is essential. In order to replace the refractory in the vacuum chamber 100, the upper and lower troughs 110 and 130 are separated from each other after the upper and lower troughs 110 and 130 are separated from each other. So as to form a vacuum chamber 100. 6A and 8A, when the pressure regulator 250 is in the OFF state and the housing 210 is in the OFF state, the upper tank 110 and the lower tank 130 are separated from each other, The upper internal space 212a on the rod 230 represents the pressure value of P1 and the elastic member 300 at this time represents the pitch value of D1. And the position of the other end 233 of the rod 230 in the inner space 212 is the same as the pitch of the elastic member 300 when the pitch value does not change Is placed on a position where the elastic member (300) is not spanned. At this time, the fastening hole 235 formed on the lower side of the rod 230 may not be protruded out of the through hole 155 but may be disposed in the through hole 155. More specifically, the fastening hole 235 is formed in the first flange 150a or the first and second holes 155b formed in the second flange 150b in which the fastening portion 200 is disposed in the through hole 155 And may be inserted into one of them. Accordingly, the first flange 150a and the second flange 150b may not be engaged when the pressure regulator 250 is not operated.

Thereafter, the rod 230 of the fastening part 200 is lowered to fasten the first flange 150a and the second flange 150b. First, as shown in Figs. 6 (b) and 8 (b), the pressure regulator 250 is turned on to increase the pressure in the upper internal space 212a from P1 to P2. That is, by the operation of the pressure regulator 250, the pressure in the upper internal space 212a is increased to a value higher than that before the pressure regulator 250 is operated. Due to the pressure increase in the upper internal space 212a, The rod 230 that has not been entirely covered by the passage formed by the first through fourth passages 155 passes through the through hole 155 and is projected to the lower portion of the flange portion 150 by being lowered. At this time, the pitch of the elastic member 300 in the housing 210 is reduced from the original pitch value D1 to D2 by the lowering of the rod 230, and elastic force is generated in the elastic member 300. However, since the elastic force generated in the elastic member 300 in the state where the pressure regulator 250 is operated does not exhibit a larger repulsive force due to the force for continuously lowering the rod 230 by the pressure regulator 250, It is not easy to push or pull out. The fixing member 410 is inserted into the fastening hole 235 when the rod 230 descends to a great distance and the fastening hole 235 formed in the rod 230 is disposed below the flange portion 150. [

The rod 230 is lowered by the operation of the pressure regulator 250 and a part of the lowered rod 230 is protruded from the lower portion of the flange 150 by the sensing unit The detection signal of the sensing unit is transmitted to the control unit, and the control unit transmits an operation signal for moving the fixing member 410 to a driver (not shown) of the fixing unit 400. The fastening part 200 and the fixing part 400 are primarily fastened by inserting the fixing member 410 into the fastening hole 235 by the operation signal by the operation signal.

The first flange 150a and the second flange 150b of the flange portion 150 may be attached to the flange 150b in order to further increase the adhesion between the rod 230 and the fixing member 410. [ 300 may be used to increase the adhesion. 6C and 8C, when the operation of the pressure regulator 250 after engagement is turned off, the pressure P3 in the upper internal space 212a on the rod 230 and the pressure P3 in the upper internal space 212a on the rod 230, The pitch D3 of the pressure regulator 300 has a larger pressure value and a smaller pitch value than when the operation of the pressure regulator 250 before the engagement is turned off and the pitch D3 of the pressure regulator 250 when the operation of the pressure regulator 250 before the engagement is turned on Lt; RTI ID = 0.0 > pitch < / RTI > 6 (b), the pressure of the upper internal space 212a is increased so as to easily insert the fixing member 410 into the fastening hole 235, so that the lower portion of the flange portion 150 The pressure of the upper internal space 212a is large and the value of the pitch is reduced to a large extent. However, after the rod 230 and the fixing member 410 are fastened, the lower surface of the flange portion 150 is disposed in parallel to the upper end of the fastening hole 235, (A position in parallel with the upper end of the fastening hole 235 and the lower end of the flange portion 150) rather than the lowered position of the rod 230. At this time, the resilient member 300 has an elastic force as much as the pitch is decreased from D1 to D3, which provides an adhesive force to the first flange 150a and the second flange 150b.

7, after the fixing member 410 is inserted into the fastening hole 235, the rod 230 is lifted by the elastic force of the elastic member 300. As shown in FIG. At this time, the height of the rod 230 is raised until the point at which the contact surface 415 of the fixing member 410 comes into contact with the lower surface of the flange portion 150. At this time, the elastic member 300, which exhibits the pitch value decreased from the original pitch value even when the operation of the pressure regulator 250 is stopped, exhibits elastic force for returning to the original pitch value in the vertical direction, The elastic force of Wu is applied to the rod 230 connected to one end and the other end of the housing 210 and the elastic force of Wd is applied to the bottom surface of the housing 210 (in detail, the upper surface of the first flange 150a on which the housing 210 is disposed). In this way, due to the elastic force of the elastic member 300, even if the operation of the pressure regulator 250 is interrupted, the rod 230 does not develop when the pressure regulator 250 is lowered, do. However, due to the tightening of the rod 230 and the fixing member 410, the rod 230 does not rise and pulls the fixing member 410 more toward the flange portion 150, thereby increasing the adhesion. That is, the fixing member 410 applies a pushing force of W 'to the lower surface of the flange portion 150 by the elastic force of the elastic member 300 so that a gap between the first flange 150a and the second flange 150b It is possible to stably fix the upper tank 110 and the lower tank 130 while increasing the adhesion between the upper tank 110 and the lower tank 130.

L: Ladle M: Steel
1: Vacuum degassing apparatus 100: Vacuum tank
110: upper tank 130: lower tank
150: flange portion 170:
150a: first flange 150b: second flange
155: Through hole 155a: First hole
155b: second hole 170a: riser
170b: Downcomer 1000: Fastening device
200: fastening part 210: housing
230: rod 235: fastening hole
300: elastic member 400:
410: fixing member 415: contact surface
500: Cooling medium supply unit

Claims (14)

An apparatus for fastening mutually abutting joints of a removable container,
A fastening portion which is fixed to the joint portion so as to cover a through hole formed so as to pass through in a vertical direction and includes a rod movable to the through hole;
An elastic member that is retracted from the outer circumferential surface of the rod in the fastening portion;
A fixing part disposed at a position opposite to the coupling part and including a fixing member that can be partially inserted into the rod;
A sensing unit for sensing whether the rod protrudes from the outside of the fixing unit in a downward direction of the joining portion; And
And a control unit for controlling operations of the fixing unit and the coupling unit according to a signal transmitted from the sensing unit. The method according to claim 1,
A fastening hole through which the fixing member can be inserted is formed through the lower side of the rod,
Wherein the fastening hole and the fixing member have the same sectional shape. The method of claim 2,
The fastening portion
A housing disposed in contact with one surface of the joint and having an inner space; And
And a pressure regulator for changing the pressure of the internal space to move the rod,
Wherein the rod is disposed at one end on the outside of the housing and the other end is in contact with the inside wall of the housing to divide the internal space. The method of claim 3,
The inner space is divided into an upper inner space and a lower inner space with respect to the other end,
Wherein the pressure regulator increases and decreases the pressure in either the upper internal space or the lower internal space to lower or raise the rod in the lower direction of the joint. The method of claim 3,
A first joining member separated from the joining portion in a vertical direction and formed with a first hole, and a second joining member disposed below the first joining member and having a second hole communicating with the first hole,
And one end of the rod is disposed in the first hole of the first joint member when the pressure regulator is not operated. The method according to claim 1,
A contact surface of the fixing member in contact with the abutment portion is formed in a plane,
And an insertion groove into which the contact surface and a part of the side surface of the fixing member are inserted is formed in the joining portion facing the contact surface. The method of claim 6,
Wherein a cross-sectional width of the fixing member increases in a direction in which the fixing member contacts the joining portion. The method of claim 3,
Wherein the elastic member has one end connected to the inner bottom surface of the housing and the other end connected to the other end surface of the rod facing the bottom surface,
The pitch of the elastic member after the fixing member is inserted into the fastening hole is smaller than the pitch of the elastic member before the pressure regulator is actuated and is larger than the pitch of the elastic member after the pressure regulator is operated . The method of claim 2,
The fastening hole
Is formed within a range of 10 to 30% from the lower end to the upper portion of the rod based on the total length of the rod. delete The method of claim 3,
Wherein the housing is formed with a cooling medium accommodating space which is separately provided outside the internal space, a cooling medium supply unit for supplying a cooling medium to the cooling medium accommodating space,
Wherein the cooling medium supply unit includes a cooling medium reservoir for storing the cooling medium and a cooling medium durability tube connected at one end to the cooling medium reservoir and at the other end to the cooling medium accommodating space. The method according to claim 1,
The joining portion is divided into a first joining member and a second joining member arranged in the vertical direction, and when the rod and the fixing member are engaged,
And the first and second joining members are brought into close contact with each other by an elastic force of the elastic member applied to the coupling portion and a force of the fixing member pushing the second joining member. And a lower joining member disposed in contact with the opened lower surface and disposed in contact with the first joining member, the upper joining member including a first joining member including a first joining member, A vacuum tank for forming a vacuum chamber;
A sealing member disposed between the first joining member and the second joining member;
A fastening bolt disposed on the outer side of the sealing member with respect to the vacuum tank and covering and fixing a part of a side surface of the joint; And
The vacuum degassing apparatus according to any one of claims 1 to 9, claim 11, and claim 12. 14. The method of claim 13,
Wherein a plurality of the fastening bolts and the container fastening devices are provided, and a pair of the fastening bolts and the container fastening devices are provided spaced apart from each other in the circumferential direction of the joining portion.

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