Cooling plate for a metallurgical furnace

Patent metadata

Field	Value
Publication number	US-12351883-B2
Application number	US-202017787747-A
Country	US
Kind code	B2
Filing date	Dec 18, 2020
Priority date	Dec 18, 2019
Publication date	Jul 8, 2025
Grant date	Jul 8, 2025

Abstract

A metallurgical furnace cooling plate includes a cooling plate body with front and rear faces and at least one coolant channel inside the body, which communicates with a rear opening on the rear face; and a connection pipe connected to the body so that a pipe channel of the connection pipe communicates with the coolant channel, the connection pipe adapted for carrying coolant fluid to or from the channel.
The body includes a receiving bore extending in a bore direction from the rear opening into the coolant channel, the channel being spaced in the bore direction from the rear face by a cover thickness of a cover portion and extends in the bore direction over a width. A connection pipe end portion extends into the receiving bore beyond the cover thickness and is form-fittingly received in the receiving bore along at least a portion of a width of the channel.

First claim

The invention claimed is:

1. A method for manufacturing a cooling plate for a metallurgical furnace, the method including the following steps:
providing a cooling plate body having a front face and an opposite rear face;
providing a connection pipe having a pipe channel that is straight in an end portion of the connection pipe;
providing a receiving bore in the cooling plate body that extends in a bore direction from a rear opening on the rear face towards the front face; and
inserting the end portion of the connection pipe through the rear opening so that it is form-fittingly received in the receiving bore, thereby connecting the connection pipe to the cooling plate body,
wherein at least one coolant channel is provided inside the cooling plate body, so that at least adjacent the receiving bore on a first side thereof, the coolant channel is spaced in the bore direction from the rear face by a cover thickness of a cover portion and extends in the bore direction over a width, the coolant channel communicates with the rear opening and the receiving bore extends from the rear opening into the coolant channel, and when the end portion is received in the receiving bore, it extends into the receiving bore in the bore direction beyond the cover thickness and is form-fittingly received along at least a portion of the width of the coolant channel, which form fit prevents movement perpendicular to the bore direction with respect to the cooling plate body.

2. The method according to claim 1 , wherein the coolant channel is drilled into the cooling plate body after the end portion is inserted into the receiving bore; and at least one lateral opening in a pipe wall of the connection pipe is drilled along with the coolant channel in a single drilling operation.

3. The method according to claim 1 , wherein a pipe wall of the connection pipe comprises at least one lateral opening, and the coolant channel is drilled into the cooling plate body before the end portion is inserted into the receiving bore so that the pipe channel communicates with the coolant channel through the at least one lateral opening and the pipe wall sealingly closes the coolant channel between the at least one lateral opening and an end opening of the coolant channel that communicates with the outside of the cooling plate body.

4. The method according to claim 1 , wherein the connection pipe is welded to the cooling plate body.

5. The method according to claim 3 , wherein the cover portion is removed in a removal region on a second side of the receiving bore opposite the at least one lateral opening before the connection pipe is welded to the cooling plate body on the second side of the receiving bore, which welding is at least partially performed away from the rear face.

6. A cooling plate for a metallurgical furnace, comprising
a cooling plate body having with a front face for facing the inside of the metallurgical furnace, an opposite rear face and at least one coolant channel inside the cooling plate body, wherein the coolant channel communicates with a rear opening on the rear face; and
a connection pipe connected to the cooling plate body so that a pipe channel of the connection pipe communicates with the coolant channel, said connection pipe being adapted for carrying coolant fluid to or from said coolant channel;
wherein the cooling plate body comprises a receiving bore that extends in a bore direction from the rear opening into the coolant channel, wherein, at least adjacent the receiving bore on a first side of the receiving bore, the coolant channel is spaced in the bore direction from the rear face by a cover thickness of a cover portion and extends in the bore direction over a width, wherein an end portion of the connection pipe extends into the receiving bore in the bore direction beyond the cover thickness and is form-fittingly received in the receiving bore along at least a portion of the width of the coolant channel, which form fit prevents movement perpendicular to the bore direction with respect to the cooling plate body, wherein the pipe channel is straight in the end portion.

7. The cooling plate according to claim 6 , wherein the end portion is press fitted into the receiving bore.

8. The cooling plate according to claim 6 , wherein the end portion is form-fittingly received in the receiving bore along at least 50% of the width of the coolant channel.

9. The cooling plate according to claim 8 , wherein the end portion is form-fittingly received in the receiving bore along the entire width of the coolant channel.

10. The cooling plate according to claim 9 , wherein the receiving bore and the end portion extend in the bore direction beyond the coolant channel.

11. The cooling plate according to claim 6 , wherein the connection pipe is connected to the cooling plate body by a welding connection proximate to the rear opening; and the cooling plate body comprises a countersink circumferentially disposed around the rear opening, wherein the welding connection is disposed inside the countersink.

12. The cooling plate according to claim 6 , wherein a pipe wall of the connection pipe comprises at least one lateral opening through which the pipe channel communicates with the coolant channel.

13. The cooling plate according to claim 12 , wherein a cross-section of the at least one lateral opening corresponds to a cross-section of the coolant channel and the at least one lateral opening is aligned with the coolant channel.

14. The cooling plate according to claim 12 , wherein the pipe wall comprises two lateral openings arranged on opposite sides of the pipe channel.

15. The cooling plate according to claim 12 , wherein the coolant channel and the at least one lateral opening are formed by a single drill hole.

16. The cooling plate according to claim 12 , wherein the coolant channel comprises an end opening communicating with the outside of the cooling plate body, wherein the pipe wall sealingly closes the coolant channel between the at least one lateral opening and the end opening.

17. The cooling plate according to claim 6 , wherein the end portion of the connection pipe has a first outer dimension perpendicular to the bore direction that is larger than a second outer dimension of an external portion of the connection pipe that is disposed outside the receiving bore.

18. The cooling plate according to claim 6 , wherein the cooling plate body has a general slab shape and comprises a plurality of coolant channels extending in a longitudinal direction of the cooling plate body, wherein two receiving bores are provided for each coolant channel at opposite extremities thereof, and a connection pipe is provided for each receiving bore so that its end portion is form fittingly received in the respective receiving bore.

19. The cooling plate according to claim 12 , wherein on a second side of the receiving bore opposite the at least one lateral opening, the coolant channel is open towards the rear face and the connection pipe is welded to the cooling plate body at least partially away from the rear face.

20. The cooling plate according to claim 6 , wherein a first central axis of the coolant channel and a second central axis of the pipe channel intersect.

21. The cooling plate according to claim 6 , wherein the cooling plate body comprises two coolant channels, wherein, at least adjacent the receiving bore on a first side thereof, at least one coolant channel is spaced in the bore direction from the rear face by the cover thickness of the cover p

Assignees

• Wurth Paul Sa
• Paul Wurth Deutschland Gmbh

Inventors

• Schneider Rene
• Ricke Marco

Classifications

• F27D2009/0067

  Cooling element inlet and outlet tubes · CPC title

• F27D2009/0018

  the cooling medium passing through a pattern of tubes · CPC title

• F27D1/12

  incorporating cooling arrangements · CPC title

• F27B3/24

  Cooling arrangements · CPC title

• F27B1/24

  Cooling arrangements · CPC title