CN113546970B - Device for cooling elongated products - Google Patents
Device for cooling elongated products Download PDFInfo
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- CN113546970B CN113546970B CN202110442938.9A CN202110442938A CN113546970B CN 113546970 B CN113546970 B CN 113546970B CN 202110442938 A CN202110442938 A CN 202110442938A CN 113546970 B CN113546970 B CN 113546970B
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- Prior art keywords
- connection
- cooling
- coolant
- receiving
- cooling device
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B45/0224—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for wire, rods, rounds, bars
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
- B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
- B21B2045/0227—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for tubes
Abstract
The application relates to a device for cooling an elongated product, wherein the device has at least one cooling device comprising a receiving connection for receiving a coolant and a coolant supply line comprising a supply connection for supplying coolant to the cooling device. The cooling device is movable relative to the coolant supply line along a circular path with a radius of rotation about a rotational axis or along a straight path. The supply connection and/or the receiving connection are provided with a flange which surrounds the opening through which the coolant passes in an annular manner and is provided with a spherical contact surface, so that there is sealing contact between the supply connection of the coolant supply line and the receiving connection of the cooling device at a plurality of different positions along a certain section of the circular path.
Description
Technical Field
The present application relates to a device for cooling an elongated product.
Background
So-called cooling sections are used in the rolling of hot metal rods, wires and tubes. These cooling sections are used to have a targeted effect on the structure of the metal by cooling the hot rolled product. Such cooling sections are arranged in the rolling mill at different positions in front of or behind the individual rolling stands of the rolling mill train and are usually formed by water tanks and connected compensating sections. The water tank is used for cooling the elongated product. The cooling is carried out by cooling the surface of the rolled product, so that a compensating section is usually arranged after the water tank for compensating the surface temperature with the internal temperature of the product.
An elongated product in the present disclosure refers to a metal semifinished product of constant cross-sectional length made by rolling, drawing or forging, which is not a flat product, because its length is much greater than its thickness and width. Particularly to bars, wires, pipes and profiles.
A processing line or pass line in the present disclosure refers to a certain substantially straight line segment or a substantially straight line segment along which an elongated product can be moved in a processing device.
In order to obtain an optimal cooling effect, it is important to match the cooling section with the elongated product to be cooled. In the cooling section, a plurality of annular cooling devices (e.g. cooling nozzles) and one or more wiper nozzles are usually arranged coaxially one after the other, through which the hot rolled material passes centrally. A certain amount of water is injected through the annular gap in these cooling nozzles to completely fill the cooling tube. A common water level is 50m3/h. It is important that the rolled stock is guided as centrally as possible in the cooling tube in order to obtain a uniform cooling effect over the peripheral extent of the rolled stock.
Another important point is that the annular gap between the rolled stock and the cooling tube, which is filled with coolant, does not exceed or fall below a certain dimension. In view of this, it is necessary to use a plurality of cooling devices having different inner diameters, which are each adapted to a different cross section of the rolled material. For example, three different cooling tube diameters are required to cover product lines of rolled stock ranging from 20mm to 100mm in diameter.
It has turned out that a plurality of cooling sections, each adapted to a cross section of a rolled stock, can be provided to be exchangeable in order to quickly insert or remove the product into or from the processing line when it is exchanged. Product changes may be performed several times a day, and thus the speed of such a change operation is critical to the efficiency of the mill train, since during this time the mill train must be shut down, resulting in production stoppages.
Due to the different demands placed on the products, the full product range of the hot in-line process is not always implemented in the hot rolling mill train for long products. In order to meet these requirements in a mill train for long products, it may be necessary to guide the rolled stock through a bypass roll table instead of a cooling tube.
A common construction in the prior art is provided with a plurality of cooling sections which are arranged parallel to one another on a translatably displaceable carriage, so that they can be arranged optionally in a processing line by displacement of the carriage. A bypass roller table parallel to the cooling section can also be arranged. In the case of a rolled stock which is not guided through one of the cooling sections, the carriage can be moved in such a way that the cooling section is removed from the processing line and the bypass roller table is pushed into the processing line.
However, this design has the disadvantage that the carriage which can be moved at the bottom has a high space requirement.
Another difficulty in the prior art is that the difficulty of supplying coolant to the cooling device is great: although the cooling section can be moved into and out of the processing line, it must also be ensured that the cooling section is supplied with coolant. In particular, it must be ensured that the cooling device can reliably supply the air segment arranged in the processing line with coolant. In a common cooling section, coolant flows of the order of magnitude of 50m3/h may occur for a single cooling device, and therefore the coolant supply device needs to be designed such that it can handle these volume flows. This has an influence in particular on the space dimensions of the coolant supply, the weight of the coolant supply and the sealing requirements. But the larger size and higher weight can interfere with the movement of the cooling section into and out of the process line.
In the prior art, it is disclosed, for example, in documents EP 2 707,156 B1 and DE 38 85,235 T2: the plurality of cooling segments are arranged in a rotor in such a way that each of the cooling segments is arranged in the processing line. However, the solutions known from the prior art for arranging these cooling sections on a rotor have drawbacks with regard to the coupling between the coolant supply and the cooling sections.
EP 2 707,156 B1 describes a plurality of cooling sections arranged on the rotor, which can optionally be arranged in a processing line by rotation of the rotor. After the rotor has rotated, a connection between the coolant supply and the cooling section is established by means of the movement of the hydraulic clutch, so that after the rotor has rotated, a further movement of the hydraulic clutch is necessary to bring the coolant supply into connection with the cooling section. Conversely, before the rotor rotates, the hydraulic clutch must first be released to place the other cooling section in the machining line.
DE 38 85 235 T2 likewise describes a plurality of cooling sections arranged on the rotor, which may optionally be arranged in a processing line. When the cooling section is replaced, the rotor is first turned out of the operating position, in the course of which the cooling section is disconnected from the coolant supply. The rotor is then rotated and then turned back to the process line, wherein a connection between the coolant supply and the cooling means of the selected cooling section is established.
In both cases, the connection of the coolant supply to the selected cooling section cannot be achieved simultaneously with the rotation of the rotor. In the prior art, the connection between the coolant supply and the cooling section is established by a linear relative movement between the longitudinal axis of the rotor and the coolant supply connection after the rotor has rotated. That is, the prior art devices need to be provided not only with means for driving the rotor around its rotor shaft, but also with means for establishing a connection between the cooling section and the coolant supply by means of a relative movement which is effected substantially in the radial direction of the rotor or parallel to this radial direction. This increases the space and maintenance requirements in addition to the structural complexity. This arrangement also increases the time required for product replacement.
Another disadvantage of the prior art devices is that the height position of the cooling section cannot be adjusted. The importance of achieving an optimal structure in the rolled stock is that the temperature distribution of the rolled stock in its circumferential direction after it leaves the cooling section is uniform. In conventional systems, uneven cooling in the cooling section often causes streaking to occur on the periphery of the elongated product. This effect always occurs in the case of long products which are not guided completely centrally in the cooling section. In order to avoid such streaking, the elongated product must be guided in the center of the cooling device with a positional accuracy of more than 1 mm. In order to achieve this, the known design of the cooling sections is provided with height-adjustable guide rollers, which are arranged between the cooling sections. However, this solution only brings about an optimal centering of the elongated product in the cooling section in the inlet and outlet areas of the cooling section. The height difference between the elongated product inlet and the elongated product outlet may well be of the order of 40 to 50mm, thus requiring lifting or settling of the elongated product by means of guide rollers as it enters and exits the cooling section. This difficulty is exacerbated in prior art devices by the following: due to the solution of the rotor and the fixed position of the coolant supply connection, the height position of the cooling section is not fine-tuned, but fixed. In view of this, it is desirable to provide a device in which the passing height of the cooling section (or guide section) can be adjusted within a certain range, i.e. providing a high degree of adjustability. The main preconditions for this scheme are: the connection between the coolant supply connection and the cooling device enables the height adjustment of the cooling section while maintaining the coolant connection.
Disclosure of Invention
In view of the above, it is an object of the present application to provide a compact device for cooling an elongated product, in which device a coolant connection can be quickly established and released between an optional cooling device and a coolant supply line when a product change is performed.
The solution to achieve the above object of the application is an apparatus according to claim 1 and an apparatus according to claim 6. Preferred embodiments of the application are found in the dependent claims.
According to one aspect of the application, a device for cooling an elongated product is provided, wherein the device has at least one cooling device comprising a receiving connection for receiving a coolant and a coolant supply line comprising a supply connection for supplying coolant to the cooling device. Wherein the cooling device is movable about a rotational axis along a circular path with respect to the coolant supply line with a radius of rotation, the supply connection and/or the receiving connection being provided with a flange which annularly surrounds the opening through which the coolant passes and is provided with a spherical contact surface, so that there is sealing contact between the supply connection of the coolant supply line and the receiving connection of the cooling device at a plurality of different positions along a certain section of the circular path.
In such a device, the cooling device can move along a circular trajectory with respect to the coolant supply line. This mobility enables the optional placement of the cooling device in the processing line and removal of the cooling device from the processing line. Furthermore, the cooling device can be moved along a circular path with a radius of rotation about the rotational axis, which can be achieved in particular by being arranged on a rotor rotatable about the rotational axis. The solution described above allows saving space in terms of the area occupied by the device compared to linear movement.
The supply connection and/or the receiving connection are provided with a flange which surrounds the opening through which the coolant passes in an annular manner and is provided with a spherical contact surface. This means that the flange can be arranged in part on the stationary coolant supply side or on the movable receiving side. The contact surface may also be only partially spherical. The spherical configuration of the contact surface enables the receiving adapter to move along a circular path relative to the supply adapter while maintaining contact between the receiving adapter and the supply adapter along a portion of the circular path. Particularly preferably, the radius of curvature of the spherical contact surface corresponds to the outer radius of rotation. Thereby, the receiving connection moves along this spherical surface relative to the supply connection. But does not necessarily require an exact correspondence of the bending radius to the rotation radius. Rather, only a substantial match between these bending radii is achieved. For example, in the case of a receiving connection which is in contact with the supply connection only over a relatively small circular arc section, the difference in radius has only a minimal effect.
Thus, the distance between the supply connection and the receiving connection does not change or only changes slightly, so that sealing contact can be maintained between the supply connection of the coolant supply line and the receiving connection of the cooling device at a plurality of positions along a certain section of the circular trajectory.
Furthermore, a sealing element, such as a seal, can be arranged between the receiving connection and the supply connection. The cross-sectional plane of the opening through which the coolant passes is generally circular based on a spherical structure. Thus, such a seal can be designed as a rotationally symmetrical body of revolution, which places lower demands on the manufacturing process of such a seal, thereby contributing to a reduction in the manufacturing costs of the sealing element. In the case of a contact surface area, for example in the form of a cylinder, which is possible in principle, non-circular cross-sectional planes are produced, so that a complex geometry of the sealing element is required.
The flange herein is used to form a sealing surface, for example, on and along which a sealing element is arranged. This enables, in particular, a large flange surrounding the opening, so that such a sealing element is moved over the flange surface while maintaining the sealing state of the connection to be sealed. That is, the larger the area sealed by the flange and the sealing element, the larger the gap around the opening, and thus the lower the accuracy requirements for the relative positioning of the joints, and also the freedom in positioning the cooling device, which will be described in more detail below.
By this solution, the coolant supply line can be arranged in a stationary manner, so that no movable hose connection is provided as part of the coolant supply line, which hose connection is normally used to move the coolant supply line in order to seal the joint. The coolant supply line and the hose connection are usually subjected to a relatively high pressure of, for example, 8bar when the line cross section is, for example, 65 mm. This situation places high demands on the hose connection and increases the maintenance costs of the hose connection and shortens its service life. By the technical scheme that the position of the coolant supply pipeline is fixed, hose connection is not needed, so that the maintenance cost of the pipeline is reduced, and the service life is prolonged.
Preferably, the device has a plurality of cooling devices, wherein the cooling devices are arranged on a rotor which is rotatable about the rotational axis such that the cooling devices are movable on the same circular trajectory.
By arranging a plurality of cooling devices on the rotor, it is possible to provide different cooling sections, which are each adapted to a certain diameter range of several elongated product diameters, for example. At the same time, space is also saved by being arranged on the rotor, since by rotation of the rotor about its axis of rotation the rotor does not need to be moved horizontally in order to replace the cooling means arranged in the processing line, i.e. aligned therewith. By the cooling devices arranged on the rotor being moved on the same circular trajectory, each of the plurality of cooling devices can also be rotated such that its receiving connection is in sealing contact with the supply connection of the coolant supply line.
Preferably, the supply connection and the receiving connection are designed to move relative to one another along the circular path, while maintaining the sealing contact, via the contact surface of the flange.
By maintaining sealing contact between the supply connection and the receiving connection during the relative rotation of the receiving connection and the supply connection, the position of the cooling device can be adjusted by rotation of the cooling device along a section of the circular track. This allows, for example, fine adjustment of the angular position and the height position of the cooling device to correspond to the height of the processing line for an aligned arrangement of the cooling device.
Preferably, the contact surface of the flange is concave and has a bending radius corresponding to the radius of rotation, wherein a section of the receiving connection lying outside in the direction of the radius of rotation is movable along the circular path. Alternatively, the flange has a convex contact surface and a radius of curvature corresponding to the radius of rotation, wherein the flange is movable along the circular trajectory.
This first option relates in particular to the case where a flange is built on the supply joint. This second option relates in particular to the case where a flange is built on the receiving nipple.
This solution makes it possible to maintain the sealing contact between the receiving connection and the supply connection during the rotation of the cooling device along the radius of rotation, since the distance between the contact surface of the receiving connection and the contact surface of the supply connection does not change.
According to another aspect of the application, a device for cooling an elongated product is provided, wherein the device has at least one cooling device comprising a receiving connection for receiving a coolant and a coolant supply line comprising a supply connection for supplying coolant to the cooling device. The cooling device is not movable along a circular path with respect to the coolant supply line, but is movable along a straight path. The supply connection and/or the receiving connection are provided with a flange which surrounds the opening through which the coolant passes in an annular manner and is provided with a flat contact surface, so that there is sealing contact between the supply connection of the coolant supply line and the receiving connection of the cooling device at a plurality of different positions along a section of the straight trajectory.
In such a device, the cooling device may be moved in a straight trajectory relative to the coolant supply line, similar to the aforementioned first aspect of the application. This mobility enables the optional placement of the cooling device in the processing line and removal of the cooling device from the processing line. Furthermore, the cooling devices can be moved on a straight path, which can be designed, for example, by means of an elevator arrangement, wherein the cooling devices can be moved into and out of the processing line in succession from top to bottom or from bottom to top. The above solution enables space saving in terms of required area compared to horizontal movement.
Furthermore, the supply connection and/or the receiving connection are provided with a flange which surrounds the opening through which the coolant passes. This means that the flange can be arranged in part on the stationary coolant supply side or on the movable receiving side. As with the previous aspect, this interface solution allows moving the receiving connector with respect to the supply connector while maintaining contact between the receiving connector and the supply connector. The distance between the supply connection and the receiving connection is thus unchanged, so that sealing contact is maintained between the supply connection of the coolant supply line and the receiving connection of the cooling device at a plurality of positions along a certain section of the straight trajectory.
Preferably, the device has a plurality of cooling devices, wherein the cooling devices are arranged on an actuator which is movable along the straight trajectory such that the cooling devices are movable on the same straight trajectory.
By arranging a plurality of cooling devices on the actuator, such as on a vertically movable elevator, it is possible to provide different cooling sections, which are each adapted to a certain specific diameter range of several elongated product diameters, for example. At the same time, the arrangement on a vertically movable actuator also saves area requirements compared to a horizontally movable arrangement. Furthermore, by the movement of the cooling devices arranged on the actuator on a straight trajectory, it is also possible to set a selected one of these cooling devices in such a way that its receiving connection comes into sealing contact with the supply connection of the coolant supply line when the actuator is moved in the direction of movement.
Preferably, the supply connection and the receiving connection are designed to move relative to one another along the straight path, while maintaining the sealing contact, via the contact surface of the flange.
By maintaining sealing contact between the supply connection and the receiving connection during the relative movement of the receiving connection and the supply connection, the position of the cooling device can be adjusted by the movement of the cooling device along a section of a straight trajectory. This allows, for example, fine adjustment of the height position of the cooling device to correspond to the height of the processing line for an aligned arrangement of the cooling device.
Preferably, according to the first or second aspect of the application or according to a preferred development of the above-mentioned aspect, the receiving connection of the cooling device has an elastic sealing element and/or the supply connection of the coolant supply line has an elastic sealing element, wherein the sealing element is preferably self-sealing and wherein the opening of the flange is smaller than the area enclosed by the sealing element.
The opening of the flange is smaller than the area enclosed by the sealing element, which enables the opening of the flange to move within the area enclosed by the sealing element without having to influence the sealing contact between the supply connection of the coolant supply line and the receiving connection of the cooling device. This allows fine adjustment of the position of the cooling device along the contact surface, such as fine adjustment of the vertical position of the cooling device, in order to accurately arrange the cooling device in the processing line.
Preferably, the supply connection has a supply opening and the receiving connection has a receiving opening, wherein the supply opening is smaller than the receiving opening.
The mobility can be further assisted by the technical scheme, and the specific mode is as follows: the amount of coolant discharged through the supply opening can be reliably accommodated by the accommodation opening without substantial overpressure in the region of the joints.
Further advantages and improvements of the application are described below with reference to the drawings and the entire claims.
Drawings
Fig. 1 is a prior art water tank.
Fig. 2 is a rotor in an embodiment of the application.
Fig. 3 is a view of the rotor, wherein portions of the cooling section are not shown.
Fig. 4a, 4b and 4c are several embodiments of a supply connection, a receiving connection and a connection between a supply connection and a receiving connection.
Fig. 5 is an embodiment of a sealing element.
Fig. 6a, 6b, 6c show the setting of the cooling device in different height positions.
Detailed Description
Fig. 1 shows a prior art device for cooling or guiding an elongated product, which has a plurality of guide sections, which can be designed either as cooling sections 1-4-1, 1-4-2, 1-4-3 or as bypass sections 1-5. The cooling sections 1-4-1, 1-4-2, 1-4-3 differ in that they are designed to cool elongated products each having a different cross-sectional profile. The water tank 1-1 is arranged on the rails 12, 14 in a movable manner in a first direction. By means of a movement in the first direction, one of the cooling sections 1-4-1, 1-4-2, 1-4-3 or the bypass section 1-5 can be optionally aligned with a processing line (not shown). Such a processing line is configured such that it has an inlet for the elongated product and an outlet for the elongated product, which are aligned with each other and spaced apart in the direction of movement of the elongated product such that corresponding guide sections are arranged in alignment therebetween in order to feed the elongated product in the direction of movement from the inlet on the feed side 11 into the guide sections and from the guide sections into the outlet on the discharge side 13.
This solution creates a great space requirement for moving the guide section in the first direction.
Fig. 2 shows a rotor 3-1 according to an embodiment of the present application.
The rotor 3-1 has a plurality of guide sections 32, 34, 36, 38, of which three are embodied as cooling sections 32, 34, 36 in the embodiment shown, and one guide section is embodied as bypass section 38.
The rotor 3-1 is rotatably supported around the rotor shaft 40. In the embodiment shown, the guide sections 32, 34, 36, 38 are parallel to each other and to the rotor shaft. In the embodiment shown, the rotor shaft 40 is parallel to the direction of movement.
The guide sections 32, 34, 36, 38 are arranged such that they can be moved together by rotation of the rotor 3-1 about the rotor shaft 40 and can optionally be arranged in alignment with a machining line. This is especially the case: the centers of the guide segments 32, 34, 36 and 38 are substantially equidistant from the rotor shaft in the radial direction of the rotor 3-1.
Fig. 3 is a view of the rotor 3-1, wherein a portion of the cooling section 32 is not shown. The rotor 3-1 is arranged in fig. 3 in such a way that the cooling section 36 is arranged in the processing line. The cooling sections 32, 34, 36 each have a plurality of cooling devices 70-32, 70-34, 70-36 which differ in their internal construction such that the cooling device 70 corresponding to one of the cooling sections 32, 34 or 36 is adapted to the corresponding elongated product cross section but is substantially identical in its external construction and is therefore designated hereinafter by reference numeral 70 unless a particular cooling device is referred to.
The cooling devices 70-36 of the cooling sections 36 arranged in the processing line are in sealing contact with the coolant supply line 42 via the supply connections 4-1-1, 4-1-2, 4-1-3, 4-1-4, 4-1-5, 4-1-6, 4-1-7, respectively. The cooling devices 70-32, 70-34 of the cooling sections 32, 34, which are not arranged in the machining line, are not in contact with the coolant supply line 42.
Fig. 4a shows a solution of the supply connection 4-1.
The supply connection 4-1 of the embodiment shown has a flange 44 which surrounds an opening 46 for the coolant to pass through and is provided with a spherical contact surface 48.
Fig. 4b shows an embodiment of a supply connection 4-1 which is in contact with a receiving connection 50 of a cooling device 70 via a spherical contact surface 48. The cooling device 70 has centrally an opening 72 for cooling the passing elongated product to be cooled. The receiving connector 50 centrally has an opening 56 for receiving a coolant. Sealing contact is made between the cooling device 70 and the coolant supply line 42 by the supply connection 4-1 and the receiving connection 50. By "sealing contact" herein is meant that substantially all of the coolant delivered by the supply fitting 4-1 is directed to the cooling device 70 via the opening 56.
In the illustrated embodiment, the spherical contact surface 48 of the flange 44 is concave and has a radius of curvature R. The bending radius R corresponds to a certain radius of rotation, wherein the section of the receiving joint 50 lying outside in the direction of this radius of rotation can move around the rotor 3-1 along a circular trajectory. By means of the spherical design of the contact surface 48, a sealing element 80, which has a rotationally symmetrical shape, can be arranged between the contact surface 48 of the flange 44 of the supply connection 4-1 and the receiving connection 50 of the cooling device 70. If the contact surface 48 is not spherical, but cylindrical for example, the sealing element 80 must have a non-rotationally symmetrical shape in order to seal the supply connection 4-1 from the receiving connection 50. The rotationally symmetrical shape of the seal element 80 is advantageous in simplifying the manufacturing process of the rotationally symmetrical portion, thereby reducing costs.
Fig. 4c shows an alternative embodiment of the connection between the supply connection 4-1 and the cooling device 70. In the embodiment shown in fig. 4c, the receiving connection 50 is provided with a flange 45 which annularly surrounds the opening 47 through which the coolant passes and is provided with a spherical contact surface 49, so that sealing contact is produced between the supply connection 4-1 of the coolant supply line and the receiving connection 50 of the cooling device 70 at a plurality of different positions along a certain section of the circular path.
As an alternative to the spherical solution of the contact surface 48 of the flange of the supply nipple 4-1, in the embodiment shown in fig. 4c, the contact surface 49 of the flange 45 of the receiving nipple 50 is spherical. In this case, the sealing member 80 is fixedly disposed on one side of the supply joint 4-1.
Fig. 5 is an enlarged view of a sealing element 80, which in the embodiment shown in fig. 5 is mounted on one side of the receiving tab 50. It should be noted that the sealing element 80 may also be mounted on one side of the supply connection 4-1. The sealing element 80 is a body rotationally symmetrical about the axis of the supply joint 4-1 or the receiving joint 50, having a main part 6-2 and a sealing lip 6-5. The sealing lip 6-5 is integrally connected with the main portion 6-2 so that a recess 6-4 is formed in a sectional view transverse to the rotation shaft 81, the base diameter of which is larger than the inner diameter of the sealing lip 6-5 and larger than the inner diameter of the main portion 6-2. With the sealing element 80 disposed between the supply fitting 4-1 and the receiving fitting 50 in such a way that the main portion 6-2 is in contact with the receiving fitting 50 and the sealing lip 6-5 is in contact with the contact surface 48 of the flange 44 of the supply fitting, the sealing lip seals the fluid connection between the supply fitting 4-1 and the receiving fitting 50. In the event of an overpressure in the interior space 82 of the sealing element 80 relative to the outer space 83 of the sealing element 80, the sealing lip 6-5 is pressed against the flange 44, so that the sealing effect is enhanced.
In the embodiment shown in fig. 4c, the arrangement of the sealing element 80 differs in that the main part 6-2 is arranged on the flat surface of the supply connection 4-1 and in that the sealing lip 6-5 is in contact with the spherical contact surface 49 of the flange 45 of the receiving connection 50.
In other words, the sealing element 80 is oriented such that the sealing lip 6-5 rests on the spherically curved portions of the two surfaces 48, 49.
In particular, the sealing element 80 is designed such that the inner diameter of the sealing lip 6-5 is greater than the diameter of the openings 46, 47 of the flanges 44, 45, so that the sealing element 80 can be moved along the contact surfaces 48, 49 of the flanges 44, 45 without releasing the sealing connection between the supply connection 4-1 and the cooling device 70. This enables the cooling device 70 to be movable relative to the supply connection, see fig. 6a, 6b, 6c.
Fig. 6a shows the intermediate position of the connection of the supply connection 4-1 to the cooling device 70. Starting from this intermediate position, the cooling device 70 can be brought into the upper position shown in fig. 6b and into the lower position shown in fig. 6c by rotation about the rotor shaft. This is achieved by: the inner diameter of the sealing lip 6-3 is larger than the diameter of the opening 46 of the flange 44, so that the sealing lip 6-3 completely surrounds the opening even in the upper and lower position, thereby ensuring a sealing contact between the supply connection 4-1 of the coolant supply line and the receiving connection 50 of the cooling device 70.
A similar effect occurs in the embodiment shown in fig. 4c, in which the curved flange 45 is arranged on the receiving connection 50 and the sealing element 80 is arranged on the supply connection 4-1.
The preferred size of the diameter of the rotor in which the cooling device 70 is located is about 1m. To compensate for the height difference of the process line, it may be necessary for the cooling device to have a height adjustability of +/-25 mm. With these dimensions, the horizontal displacement of the cooling device from the intermediate position to the upper or lower position is a fraction of a millimeter, so that the horizontal displacement of the elongated product as it passes through is negligible.
In addition, the seal 80 adopting the aforementioned structure can be matched with a small difference in distance between the surfaces to be sealed by the elasticity of the seal lip 6-3.
Reference numeral table
Unless the context indicates otherwise, like reference numerals in the drawings refer to like features or features that are substantially identical in function.
1-1 water tank
1-2-1..1-2-6 cooling device
1-3-1,1-3-2 cooling device
1-4-1 Cooling section
1-4-2 Cooling section
1-4-3 Cooling section
1-5 bypass section
3-1 rotor
3-2-1..3-2-6 cooling device
3-3-1,3-3-2 cooling device
42. Coolant supply line
44. Flange
45. Flange
46. An opening
47. An opening
48. Surface/contact surface
49. Surface/contact surface
50. Accommodating joint
56. An opening
4-1 supply connector
4-1-1-4-1-7 supply connection
11. Feed side
13. Discharge side
32. Cooling section
34. Cooling section
36. Cooling section
38. Bypass section
40. Rotor shaft
60. Guiding device
70. Cooling device
72. An opening
80. Sealing element
81. Rotary shaft
82. Inner cavity
83. External space
5-2 surface/contact surface
6-1 accommodation joint
6-2 main part
6-4 notch
6-5 seal lip
7-2 contact surface
9-1 inner diameter of feed opening
9-2 inner diameter of the receiving opening
172. Groove
12. Rail track
14. A track.
Claims (10)
1. An apparatus for cooling an elongated product,
wherein the device has at least one cooling device (70) comprising a receiving connection (50) for receiving a coolant, a coolant supply line (42) comprising a supply connection (4-1) for supplying coolant to the cooling device (70),
wherein the cooling device (70) is movable about the rotational axis (40) along a circular path with respect to the coolant supply line (42) with a radius of rotation,
wherein the supply connection (4-1) and/or the receiving connection (50) are provided with flanges (44, 45) which annularly surround openings (46, 47) for the coolant to pass through and are provided with spherical contact surfaces (48, 49),
so that at a plurality of different positions along a certain section of the circular trajectory there is a sealing contact between the supply connection (4-1) of the coolant supply line (42) and the receiving connection (50) of the cooling device (70).
2. The device according to claim 1,
wherein the device has a plurality of cooling devices (70),
wherein the cooling device (70) is arranged on a rotor (3-1) which is rotatable about the rotational axis (40) such that the cooling device (70) is movable on the same circular trajectory.
3. The device according to claim 1 or 2, wherein the supply connection (4-1) and the receiving connection (50) are designed to move relative to each other along the circular trajectory by means of contact surfaces (48, 49) of the flanges (44, 45) while maintaining the sealing contact.
4. The device according to claim 1 or 2, wherein the contact surface (48) of the flange (44) is concave and has a bending radius corresponding to the radius of rotation, wherein a section of the receiving joint (50) lying outside in the direction of the radius of rotation is movable along the circular trajectory.
5. The device according to claim 1 or 2, wherein the contact surface (49) of the flange (45) is convex and has a bending radius corresponding to the radius of rotation, wherein the flange (45) is movable along the circular trajectory.
6. An apparatus for cooling an elongated product,
wherein the device has at least one cooling device (70) comprising a receiving connection (50) for receiving a coolant, a coolant supply line (42) comprising a supply connection (4-1) for supplying coolant to the cooling device (70),
wherein the cooling device (70) is movable relative to the coolant supply line (42) along a straight trajectory from top to bottom or from bottom to top,
wherein the supply connection (4-1) and/or the receiving connection are provided with a flange which surrounds the opening through which the coolant passes in an annular manner and is provided with a flat contact surface,
so that there is sealing contact between the supply connection (4-1) of the coolant supply line (42) and the receiving connection (50) of the cooling device (70) at a plurality of different positions along a certain section of the straight trajectory.
7. The device according to claim 6,
wherein the device has a plurality of cooling devices (70),
wherein the cooling device (70) is arranged on an actuator which is movable along the straight trajectory from top to bottom or from bottom to top such that the cooling device (70) is movable on the same straight trajectory.
8. The apparatus according to claim 6 or 7,
wherein the supply connection (4-1) and the receiving connection (50) are designed to move relative to one another along the straight path from top to bottom or from bottom to top, while maintaining the sealing contact, by the contact surface of the flange.
9. The device according to claim 6 or 7, wherein the receiving connection (50) of the cooling device (70) has an elastic sealing element (80) and/or
Wherein the supply connection (4-1) of the coolant supply line (42) has an elastic sealing element (80),
wherein the sealing element (80) is self-sealing,
wherein the openings (46, 47) of the flanges (44, 45) are smaller than the area enclosed by the sealing element (80).
10. The device according to claim 6 or 7, wherein the supply connection (4-1) has a supply opening (46), the receiving connection (50) has a receiving opening (56),
wherein the supply opening (46) is smaller than the receiving opening (56).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102020205249.2A DE102020205249B3 (en) | 2020-04-24 | 2020-04-24 | Device for cooling long products |
| DE102020205249.2 | 2020-04-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113546970A CN113546970A (en) | 2021-10-26 |
| CN113546970B true CN113546970B (en) | 2023-09-26 |
Family
ID=77749908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110442938.9A Active CN113546970B (en) | 2020-04-24 | 2021-04-23 | Device for cooling elongated products |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN113546970B (en) |
| DE (1) | DE102020205249B3 (en) |
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| DE19960638A1 (en) | 1999-12-16 | 2001-06-28 | Sms Demag Ag | Water cooling section for wire |
| DE102005060545A1 (en) | 2005-12-17 | 2007-06-21 | Sms Meer Gmbh | Device for water cooling the wire in wire rolling mills |
| ITMI20110848A1 (en) * | 2011-05-13 | 2012-11-14 | Danieli Off Mecc | APPARATUS FOR HEAT TREATMENT IN LINE OF METALLURGICAL SEMI-FINISHED PRODUCTS |
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| FR1543201A (en) * | 1967-04-24 | 1968-10-25 | Metallurg Du Nickel | Device for the sealed fixing of a tubular heating element in an insertion opening of a casing of a heating appliance |
| GB1245109A (en) * | 1968-11-07 | 1971-09-08 | John Arthur Cannings | Sealing means for spherical surfaces |
| GB1532646A (en) * | 1975-10-06 | 1978-11-15 | Siemens Ag | Cooling pipe and a method for introducing a cable into the pipe |
| GB2000063A (en) * | 1977-06-11 | 1979-01-04 | Salzgitter Peine Stahlwerke | Device for cooling of rolled stock |
| US4289986A (en) * | 1978-12-27 | 1981-09-15 | Siemens Aktiengesellschaft | Coolant connecting head for an electric machine with a superconducting rotor winding |
| SU1060304A1 (en) * | 1982-07-09 | 1983-12-15 | Ордена Ленина,Ордена Трудового Красного Знамени Завод Транспортного Машиностроения Им.В.И.Ленина | Metal guide for low-pressure casting |
| US4629165A (en) * | 1983-11-23 | 1986-12-16 | Badische Stahlwerke Ag | Cooling pipe arrangement for a cooling section for rapid cooling of rolled wire or bar material |
| US4948363A (en) * | 1987-11-23 | 1990-08-14 | Danieli & C. Officine Meccaniche Spa | Quick-change cooling line |
| EP1208924A2 (en) * | 2000-11-24 | 2002-05-29 | Rainer Dr.-Ing. Menge | Wire cooling device |
| WO2004090964A1 (en) * | 2003-04-11 | 2004-10-21 | Shin Won Co. Ltd. | A rotary union |
| KR20080058085A (en) * | 2006-12-21 | 2008-06-25 | 주식회사 포스코 | Apparatus for cooling roller of rollertable |
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| CN103615615A (en) * | 2013-10-31 | 2014-03-05 | 武汉船用机械有限责任公司 | Rotating joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113546970A (en) | 2021-10-26 |
| DE102020205249B3 (en) | 2021-10-07 |
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