CN213895914U - Arrangement structure of hot bending pipe transverse moving type RH vacuum refining device - Google Patents
Arrangement structure of hot bending pipe transverse moving type RH vacuum refining device Download PDFInfo
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- CN213895914U CN213895914U CN202022825026.3U CN202022825026U CN213895914U CN 213895914 U CN213895914 U CN 213895914U CN 202022825026 U CN202022825026 U CN 202022825026U CN 213895914 U CN213895914 U CN 213895914U
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Abstract
The utility model relates to a hot return bend sideslip formula RH vacuum refining device arrangement structure sets up 2 at least vacuum treatment stations along striding long direction parallel interval, and RH vacuum refining device includes vacuum tank and hot return bend, the vacuum tank is fixed in on the first platform, the bottom of hot return bend can seal to lean on in the top of vacuum tank, the top of hot return bend can be connected on hot return bend sideslip car, hot return bend sideslip car can drive the sideslip of hot return bend is in order alternate operation between 2 adjacent vacuum treatment stations. The utility model discloses the sideslip technique of make full use of hot return bend converts traditional vacuum tank sideslip into hot return bend sideslip, reduces RH vacuum refining device's area for the installation and the maintenance of equipment are simple reliable, and the fault rate is low and with low costs.
Description
Technical Field
The utility model relates to the technical field of metallurgy, especially, relate to a hot bent pipe sideslip formula RH vacuum refining device arrangement structure.
Background
At present, the RH vacuum refining device arrangement structure of domestic steel-making enterprises has various types (RH vacuum refining, the known term in the technical field is called RH vacuum circulation degassing refining method, in 1959, the RH is the first letter of two manufacturers adopting RH refining technology in Germany at that time, when a vacuum tank traverses through a vacuum tank car, the traversing modes of single station, double station, two three stations, three five stations and the like can be arranged, and the RH vacuum refining device arrangement structure mainly has the following problems:
(1) the double-station vacuum tanks share one set of vacuum tank transverse moving vehicle and cannot be arranged into a one-vehicle two-station type;
(2) the double-station processing mode is adopted, and the traditional arrangement mode occupies a large area;
(3) the equipment weight of the vacuum tank truck is large, so that the equipment investment cost is increased.
Therefore, the inventor provides an arrangement structure of a hot bent pipe traversing type RH vacuum refining device by experience and practice of related industries for many years, so as to overcome the defects of the prior art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot bent pipe sideslip formula RH vacuum refining device arrangement structure, the sideslip technique of make full use of hot bent pipe converts traditional vacuum tank sideslip into hot bent pipe sideslip, reduces RH vacuum refining device's area for the installation and the maintenance of equipment are simple reliable, and the fault rate is low and with low costs.
The utility model aims at realizing like this, a hot bent pipe sideslip formula RH vacuum refining device arrangement structure sets up 2 at least vacuum treatment stations along striding long direction parallel interval, and RH vacuum refining device includes vacuum tank and hot bent pipe, the vacuum tank is fixed in on the first platform, the bottom of hot bent pipe can seal support lean on in the top of vacuum tank, the hot bent pipe can be connected on hot bent pipe sideslip car, hot bent pipe sideslip car can drive the sideslip of hot bent pipe is with alternate operation between 2 adjacent vacuum treatment stations.
The utility model discloses an in a preferred embodiment, the second platform has been erect to the top of hot return bend, set up the sideslip guide rail along striding long direction on the second platform, hot return bend sideslip car can be followed the sideslip guide rail removes.
The utility model discloses a in a preferred embodiment, connect driving motor on the heat elbow sideslip car, driving motor drives the heat elbow sideslip car is followed the sideslip guide rail removes.
In a preferred embodiment of the present invention, the second platform is provided with a limit switch, and the limit switch is used for positioning the heat bending pipe traversing carriage.
In a preferred embodiment of the present invention, a locking device is disposed on the second platform, and the locking device is used for locking the hot-bending pipe traversing vehicle.
The utility model discloses an in a preferred embodiment, hot bent pipe sideslip car passes through control part control running state, the control part includes frequency conversion controller, PLC switch board or manual operation case, driving motor limit switch with locking device all with the control part electricity is connected.
In a preferred embodiment of the present invention, a medium drag chain is disposed on one side of the hot bending pipe traversing carriage, and the medium drag chain can provide a medium to the vacuum tank, the hot bending pipe and the hot bending pipe traversing carriage.
The utility model discloses an in a preferred embodiment, the top of hot return bend can be sealed to lean on and set up water-cooling vacuum pipeline, water-cooling vacuum pipeline with between the hot return bend top support set up first flange and first sealed the pad, the bottom of hot return bend can be sealed support in the top of vacuum jar, the hot return bend with between the vacuum jar top support and set up second flange and the sealed pad of second, set up hydraulic jacking structure on the hot return bend sideslip car, the hot return bend is located hydraulic jacking is structural, hydraulic jacking structure enables the hot return bend with vacuum water-cooling pipeline with the vacuum jar breaks away from.
In a preferred embodiment of the present invention, the hydraulic jacking structure is powered by a hydraulic station, and the hydraulic station is disposed on one side of the second platform.
The utility model discloses a in a preferred embodiment, the side of hot return bend is connected with the wing lid, the wing lid can follow the hot return bend removes, just the vacuum tank and the water-cooling vacuum pipe that adjacent station can be hidden to the wing lid.
The utility model discloses an among the preferred embodiment, along striding long direction parallel interval and setting up 2 vacuum treatment stations, set up the stand-by between 2 vacuum treatment stations, stand-by and both sides can set up a hot return bend sideslip car between the vacuum treatment station respectively, hot return bend sideslip car can drive the hot return bend is in stand-by with sideslip between the vacuum treatment station.
From top to bottom, the utility model provides a hot bent pipe sideslip formula RH vacuum refining device arrangement structure has following beneficial effect:
the utility model provides a heat bent pipe sideslip formula RH vacuum refining device arrangement structure makes full use of the sideslip technique of heat bent pipe, converts traditional vacuum tank sideslip into heat bent pipe sideslip, carries out innovative change to the arrangement pattern of RH vacuum refining device, realizes RH vacuum refining device's duplex position alternate operation; the hot bent pipes are arranged on the hot bent pipe transverse moving vehicle in parallel and can alternately operate between two vacuum treatment stations, and double stations can share one set of hot bent pipe, so that a double-station arrangement mode of one vehicle and two stations of the RH vacuum refining device can be realized;
in the arrangement structure of the hot bent pipe cross-sliding type RH vacuum refining device provided by the utility model, the hot bent pipe is provided with the wing cover which can lift up and down along with the hot bent pipe, thus ensuring the sealing of the vacuum tank and the water-cooling vacuum pipeline during the non-operation period of the vacuum treatment station;
the utility model discloses one set of hot return bend is reduced to more traditional arrangement structure, reducible RH vacuum refining device's area for the installation of equipment is simple reliable with the maintenance, and the fault rate is low and with low costs, can reduce the investment cost of construction such as equipment and mill, and can satisfy the production requirement in RH vacuum refining device duplex position.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
FIG. 1: is a schematic diagram of the arrangement structure of the hot bent pipe cross-sliding type RH vacuum refining device of the utility model.
FIG. 2: is a schematic diagram of the hot bend pipe traversing carriage in fig. 1 traversing to another vacuum processing station.
FIG. 3: is a cross-sectional view a-a in fig. 1.
FIG. 4: is a cross-sectional view B-B in FIG. 1.
FIG. 5: is a schematic diagram of two cars and three places of the arrangement structure of the hot bent pipe cross-sliding type RH vacuum refining device of the utility model.
In the figure:
100. the hot bending pipe transverse moving type RH vacuum refining device is arranged in the structure;
1. a vacuum tank;
2. hot bending the pipe; 21. a wing cover;
3. a hot bent pipe transverse moving vehicle; 31. a drive motor; 32. a medium drag chain;
4. a second platform; 41. a limit switch; 42. a locking device;
5. transversely moving the guide rail;
61. a variable frequency controller; 62. a PLC control cabinet; 63. a manual operation box;
7. water-cooling the vacuum pipeline;
8. a hydraulic jacking structure; 81. a hydraulic station;
9. a vacuum treatment station; 91. a first platform; 92. carrying out top lance; 93. and (5) waiting for the airplane to be parked.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
The specific embodiments of the present invention described herein are for the purpose of explanation only and should not be construed as limiting the invention in any way. Given the teachings of the present invention, the skilled person can conceive of any possible variants based on the invention, which should all be considered as belonging to the scope of the invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 to 5, the utility model provides a heat elbow sideslip formula RH vacuum refining device arrangement structure 100, set up 2 at least vacuum treatment station 9 along striding the parallel interval of long direction, RH vacuum refining device includes vacuum tank 1 and heat elbow 2, vacuum tank 1 is fixed in on first platform 91, the bottom of heat elbow 2 can seal and lean on the top in vacuum tank 1, heat elbow 2 can compress tightly and seal the top that communicates in vacuum tank 1 under the action of gravity, be convenient for the removal of heat elbow 2, lean on but not carrying out fixed connection (can not adopt fixed connection mode such as bolted connection) heat elbow 2 between heat elbow and the vacuum tank and can connect on heat elbow sideslip car 3 (heat elbow 2 parallel mount is on heat elbow sideslip car 3), heat elbow sideslip car 3 can drive a heat elbow 2 sideslip with alternate operation between adjacent 2 vacuum treatment station 9.
The utility model provides a heat bent pipe sideslip formula RH vacuum refining device arrangement structure makes full use of the sideslip technique of heat bent pipe, converts traditional vacuum tank sideslip into heat bent pipe sideslip, carries out innovative change to the arrangement pattern of RH vacuum refining device, realizes RH vacuum refining device's duplex position alternate operation; the hot bent pipes are arranged on the hot bent pipe transverse moving vehicle in parallel, and can alternately operate between two vacuum treatment stations, and double stations can share one set of hot bent pipe, so that a double-station arrangement mode of one vehicle and two stations of the RH vacuum refining device can be realized, and the arrangement is compact and ordered; the utility model discloses one set of hot return bend is reduced to more traditional arrangement structure, reducible RH vacuum refining device's area for the installation of equipment is simple reliable with the maintenance, and the fault rate is low and with low costs, can reduce the investment cost of construction such as equipment and mill, and can satisfy the production requirement in RH vacuum refining device duplex position.
Further, as shown in fig. 3 and 4, a second platform 4 is provided above the hot bend 2, a traverse guide 5 is provided on the second platform 4 in the span length direction, and the hot bend traverse carriage 3 is movable along the traverse guide 5.
Further, as shown in fig. 1, 2, 3, and 4, a driving motor 31 is connected to the hot-bending traverse car 3, and the driving motor 31 drives the hot-bending traverse car 3 to move along the traverse guide 5. In the present embodiment, the drive motor 31 is a dual-drive variable frequency motor.
Further, as shown in fig. 1, 2, 3, and 4, a limit switch 41 is provided on the second platform 4, and the limit switch 41 is used for positioning the hot-bending traverse carriage 3.
Further, as shown in fig. 1, 2, 3 and 4, a locking device 42 is arranged on the second platform 4, and the locking device 42 is used for locking the hot bend pipe traversing carriage 3 and locking and fixing the hot bend pipe traversing carriage 3 at a corresponding operation station.
When a certain station of the RH vacuum refining device needs vacuum treatment operation, the hot bent pipe traversing vehicle 3 moves to the required vacuum treatment station under the action of the driving motor 31, is positioned through the limit switch 41, and is locked at the treatment station under the action of the locking device 42.
Further, as shown in fig. 1, the operation state of the heat bending pipe traversing carriage 3 is controlled by a control part, the control part comprises a frequency conversion controller 61, a PLC control cabinet 62 or a manual operation box 63, and the driving motor 31, the limit switch 41 and the locking device 42 are all electrically connected with the control part.
The control part is electrically connected with an upper computer (the prior art, a control mechanism in a workshop) in the main control room, the heat bending pipe transverse moving vehicle 3 is fully automatically controlled with the upper computer in the main control room through a frequency conversion controller 61, the heat bending pipe transverse moving vehicle 3 is semi-automatically controlled with the upper computer in the main control room through a PLC control cabinet 62, and the heat bending pipe transverse moving vehicle 3 is manually controlled with the upper computer in the main control room through a manual operation box 63.
The heat bending pipe traversing carriage 3 is driven by a driving motor 31 (a double-drive variable frequency motor), the speed and the positioning of the heat bending pipe traversing carriage 3 are controlled by a variable frequency controller 61, a PLC control cabinet 62 and a limit switch 41, and the locking device 42 is adopted to lock the position of the heat bending pipe traversing carriage 3.
Further, as shown in fig. 1, 2, 3, and 4, a medium drag chain 32 is provided on one side of the hot-bent pipe traverse car 3, and the medium drag chain 32 can supply a medium to the vacuum tank 1, the hot bent pipe 2, and the hot-bent pipe traverse car 3.
The media required by the vacuum tank 1, the hot bent pipe 2 and the hot bent pipe traversing carriage 3 are provided by a medium drag chain 32, the media required by the hot bent pipe traversing carriage 3 is electricity, and the media required by the vacuum tank 1 and the hot bent pipe 2 are cooling water, compressed air, nitrogen, argon and the like.
Further, as shown in fig. 3, the top of the hot bending pipe 2 can be sealed to lean on and set up the water-cooling vacuum pipe 7 (the water-cooling vacuum pipe 7 can compress tightly and sealed intercommunication in the top of the hot bending pipe 2 under the action of gravity), the top between the water-cooling vacuum pipe 7 and the hot bending pipe 2 is supported and set up first flange and first sealed pad (guarantee sealed supporting), the bottom of the hot bending pipe 2 can be sealed to lean on the top in the vacuum tank 1 (the hot bending pipe 2 can compress tightly and sealed intercommunication in the top of the vacuum tank 1 under the action of gravity), the top is supported and set up second flange and second sealed pad (guarantee sealed supporting) between the hot bending pipe 2 and the vacuum tank 1, set up hydraulic jacking structure 8 on the hot bending pipe sideslip car 3, the hot bending pipe 2 is located on hydraulic jacking structure 8, hydraulic jacking structure 8 can make the hot bending pipe 2 break away from with the water-cooling vacuum pipe 7 and vacuum tank 1. The hot bent pipe 2 can be arranged on the hot bent pipe traversing carriage 3 through a hydraulic jacking structure 8. The hydraulic jacking structure 8 is powered by a hydraulic station 81, the hydraulic station 81 being arranged on one side of the second platform 4. The hydraulic pressure of hydraulic jacking structure 8 is through fixing the hydraulic pressure station 81 on the second platform (in the utility model discloses a specific embodiment, equip 1 set of hydraulic pressure station for hydraulic jacking structure 8, fix on near platform) and provide. The utility model discloses an in a specific embodiment, hydraulic pressure jacking structure 8 includes 4 sets of synchronous pneumatic cylinders, guarantees that hot return bend can seal and break away from with vacuum tank mouth and water-cooling vacuum pipeline suitable for reading in step.
After a vacuum treatment station 9 finishes treatment (molten steel is finished and the vacuum is broken), the hot bent pipe 2 is lifted by about 150mm under the driving of the hydraulic jacking structure 8, so that the hot bent pipe 2 is separated from the vacuum tank 1 and the water-cooling vacuum pipeline 7, and the hot bent pipe traversing vehicle 3 can drive the hot bent pipe 2 to move to another vacuum treatment station 9 for vacuum treatment.
Further, as shown in fig. 1 and 2, a wing cover 21 is connected to a side surface of the hot bent pipe 2, the wing cover 21 can move along with the hot bent pipe 2, and the wing cover 21 can cover the vacuum tank 1 and the water-cooled vacuum pipe 7 at adjacent stations. The wing cover 21 ensures top gun baking of the station vacuum tank.
After the hot bent pipe traversing carriage 3 drives the hot bent pipe 2 to move to a vacuum processing station 9 to be subjected to vacuum processing, the hot bent pipe 2 descends by about 150mm under the action of the hydraulic jacking structure 8, the vacuum system of the vacuum processing station 9 is ensured to be sealed well, a vacuum tank and a water-cooling vacuum pipeline of another adjacent vacuum processing station 9 are covered by a wing cover 21 on the hot bent pipe 2, the wing cover 21 can lift up and down along with the hot bent pipe 2, and the vacuum tank of another adjacent vacuum processing station 9 is baked by a top gun 92 (the prior art) for use for the next furnace.
Further, as shown in fig. 5, the arrangement structure 100 of the two-position single-car heat bending pipe traversing RH vacuum refining apparatus of the present invention can be expanded to a two-car three-position arrangement. In the arrangement structure, 2 vacuum treatment stations 9 are arranged in parallel along the length-spanning direction at intervals, a standby station 93 is additionally arranged between the 2 vacuum treatment stations 9, a hot bent pipe traversing carriage 3 can be respectively arranged between the standby station 93 and the vacuum treatment stations 9 at two sides, and the hot bent pipe traversing carriage 3 can drive the hot bent pipe 2 to traverse between the standby station 93 and the vacuum treatment stations 9 so as to switch operation.
When the vacuum processing station 9 needs to replace the vacuum tank 1, the hot bent pipe traversing vehicle 3 at the station drives the hot bent pipe 2 to move to the standby position 93, so that the vacuum processing operation of the other vacuum processing station 9 is not influenced, and the production efficiency of the vacuum processing of the RH vacuum refining device is improved.
The utility model discloses a hot bent pipe sideslip formula RH vacuum refining device arrangement structure 100's application method as follows:
2 vacuum treatment stations 9 are arranged in a workshop span in parallel at intervals along the span length direction; when a vacuum processing station 9 performs vacuum processing, the hot bent pipe 2 descends by about 150mm under the action of the hydraulic jacking structure 8, the bottom of the water-cooling vacuum pipeline 7 is tightly pressed and hermetically communicated with the top of the hot bent pipe 2, and the bottom of the hot bent pipe is hermetically abutted against the top of the vacuum tank 1, so that the vacuum system of the vacuum processing station 9 is ensured to be well sealed for vacuum processing; the vacuum tank and water-cooled vacuum pipe of the next vacuum processing station 9 are covered by the wing cover 21 on the hot bend pipe 2, and the vacuum tank is baked by the top lance 92 (prior art) for the next heat.
After a vacuum processing station 9 finishes processing (molten steel is finished and the vacuum is broken), the hot bent pipe 2 is lifted by about 150mm under the driving of the hydraulic jacking structure 8, so that the hot bent pipe 2 is separated from the vacuum tank 1 and the water-cooling vacuum pipeline 7, and the hot bent pipe traversing vehicle 3 can drive the hot bent pipe 2 to move to another adjacent vacuum processing station 9 for vacuum processing.
From top to bottom, the utility model provides a hot bent pipe sideslip formula RH vacuum refining device arrangement structure has following beneficial effect:
the utility model provides a heat bent pipe sideslip formula RH vacuum refining device arrangement structure makes full use of the sideslip technique of heat bent pipe, converts traditional vacuum tank sideslip into heat bent pipe sideslip, carries out innovative change to the arrangement pattern of RH vacuum refining device, realizes RH vacuum refining device's duplex position alternate operation; the hot bent pipes are arranged on the hot bent pipe transverse moving vehicle in parallel and can alternately operate between two vacuum treatment stations, and double stations can share one set of hot bent pipe, so that a double-station arrangement mode of one vehicle and two stations of the RH vacuum refining device can be realized;
in the arrangement structure of the hot bent pipe cross-sliding type RH vacuum refining device provided by the utility model, the hot bent pipe is provided with the wing cover which can lift up and down along with the hot bent pipe, thus ensuring the sealing of the vacuum tank and the water-cooling vacuum pipeline during the non-operation period of the vacuum treatment station;
the utility model discloses one set of hot return bend is reduced to more traditional arrangement structure, reducible RH vacuum refining device's area for the installation of equipment is simple reliable with the maintenance, and the fault rate is low and with low costs, can reduce the investment cost of construction such as equipment and mill, and can satisfy the production requirement in RH vacuum refining device duplex position.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (11)
1. The utility model provides a hot bent pipe sideslip formula RH vacuum refining device arrangement structure, its characterized in that sets up 2 at least vacuum treatment stations along striding long direction parallel interval, and RH vacuum refining device includes vacuum tank and hot bent pipe, the vacuum tank is fixed in on the first platform, the bottom of hot bent pipe can seal support by in the top of vacuum tank, the hot bent pipe can be connected on hot bent pipe sideslip car, hot bent pipe sideslip car can drive the hot bent pipe sideslip is in order alternate operation between 2 adjacent vacuum treatment stations.
2. The arrangement structure of a hot-bend traversing RH vacuum refining apparatus according to claim 1, wherein a second platform is erected above the hot bend, and a traversing rail is provided on the second platform in a span length direction, and the hot-bend traversing vehicle is movable along the traversing rail.
3. The arrangement of a hot-bend traversing RH vacuum refining apparatus according to claim 2, wherein a driving motor is connected to the hot-bend traversing carriage, and the driving motor drives the hot-bend traversing carriage to move along the traversing guide.
4. The hot-bend traversing RH vacuum refining apparatus arrangement of claim 3, wherein a limit switch is provided on the second platform for positioning of the hot-bend traversing carriage.
5. The hot-bend traversing RH vacuum refining apparatus arrangement of claim 4, wherein a locking device for locking the hot-bend traversing carriage is provided on the second platform.
6. The arrangement structure of the hot bend traversing RH vacuum refining apparatus according to claim 5, wherein the hot bend traversing vehicle controls the operation state by a control part, the control part comprises a variable frequency controller, a PLC control cabinet or a manual operation box, and the driving motor, the limit switch and the locking device are all electrically connected to the control part.
7. The hot bend traversing RH vacuum refining apparatus arrangement of claim 3, wherein a media drag chain is provided at one side of the hot bend traversing carriage, the media drag chain being capable of providing media to the vacuum tank, the hot bend and the hot bend traversing carriage.
8. The hot-bent-tube traversing RH vacuum refining apparatus arrangement structure according to claim 2, wherein the top of the hot bent tube is capable of sealing against the water-cooled vacuum tube, the first flange and the first sealing gasket are disposed between the water-cooled vacuum tube and the hot bent tube, the second flange and the second sealing gasket are disposed between the hot bent tube and the vacuum tank, the hydraulic jacking structure is disposed on the hot bent-tube traversing carriage, the hot bent tube is seated on the hydraulic jacking structure, and the hydraulic jacking structure is capable of separating the hot bent tube from the water-cooled vacuum tube and the vacuum tank.
9. The hot bend traversing RH vacuum refining apparatus arrangement of claim 8, wherein the hydraulic jacking arrangement is powered by a hydraulic station disposed on a side of the second platform.
10. The hot-bend cross-sliding RH vacuum refining apparatus arrangement structure of claim 8, wherein a wing cover is connected to a side of the hot bend, the wing cover can move with the hot bend, and the wing cover can cover the vacuum tank and the water-cooled vacuum pipe of the adjacent station.
11. The arrangement structure of a hot-bent-tube traversing RH vacuum refining apparatus according to claim 1, wherein 2 vacuum processing stations are provided in parallel at intervals in the cross-length direction, a standby station is provided between the 2 vacuum processing stations, a hot-bent-tube traversing carriage is respectively provided between the standby station and the vacuum processing stations on both sides, and the hot-bent-tube traversing carriage is capable of driving the hot bent tube to traverse between the standby station and the vacuum processing stations.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022825026.3U CN213895914U (en) | 2020-11-30 | 2020-11-30 | Arrangement structure of hot bending pipe transverse moving type RH vacuum refining device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022825026.3U CN213895914U (en) | 2020-11-30 | 2020-11-30 | Arrangement structure of hot bending pipe transverse moving type RH vacuum refining device |
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| CN213895914U true CN213895914U (en) | 2021-08-06 |
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| CN202022825026.3U Active CN213895914U (en) | 2020-11-30 | 2020-11-30 | Arrangement structure of hot bending pipe transverse moving type RH vacuum refining device |
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| CN (1) | CN213895914U (en) |
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