阅读说明：本技术 紊流嵌件 (Turbulent insert ) 是由 W.鲁夫 H.克里格 于 2019-07-05 设计创作，主要内容包括：本发明涉及一种用于制造纤维料幅、尤其是纸幅或者纸板幅的机器的流浆箱的紊流嵌件,所述紊流嵌件包括入口区域和出口区域,所述入口区域具有在至少一个水平平面中分别沿着机器横向分布的、分别导引纤维材料悬浮液的入口流体的入口,所述出口区域具有多个在至少一个水平平面中沿着机器横向分布的、分别导引纤维材料悬浮液的出口流体的出口。紊流嵌件在此这样设计,使得通过入口区域的入口输入的入口流体至少部分地分别分为至少两个分流,所述分流作为出口流体经过出口区域的相应的出口流出。还给出了具有这种紊流嵌件的流浆箱。(The invention relates to a turbulence insert for a headbox of a machine for producing a fibrous web, in particular a paper or cardboard web, comprising an inlet region with an inlet opening, which in each case leads an inlet flow of a fibrous material suspension in at least one horizontal plane in the cross-machine direction, and an outlet region with a plurality of outlets, which in each case leads an outlet flow of a fibrous material suspension in at least one horizontal plane in the cross-machine direction. The turbulence insert is designed such that the inlet fluid which is supplied via the inlet of the inlet region is at least partially divided into at least two partial flows, which flow exits as outlet fluid via the corresponding outlet of the outlet region. A headbox having such a turbulence insert is also presented.)

1. Turbulence insert (TE) for a headbox of a machine for producing a fibrous web, in particular a paper or cardboard web, the turbulence insert comprises an inlet region (18) and an outlet region (24), the inlet region having a plurality of inlets (22) which are distributed in at least one horizontal plane in each case along a cross-machine direction (CD) and which each guide an inlet fluid (20) of a fibrous material suspension, the outlet area having a plurality of outlets (26) distributed in at least one horizontal plane along a cross-machine direction (CD) for respectively directing an outlet flow of the fibrous material suspension, wherein the turbulence insert (TE) is designed in such a way that an inlet fluid (20) fed in through an inlet (22) of the inlet region (18) is at least partially divided into at least two partial flows (28), the partial flows are discharged as outlet fluids via corresponding outlets (26) of the outlet region (24).

2. The turbulence insert as set forth in claim 1, characterized in that the outlet regions (24) have a pitch (T) of outlets (26) distributed along the cross-machine direction (CD) and arranged in at least one horizontal plane_Aus) Is smaller than the pitch (T) of the inlets (22) distributed along the cross-machine direction (CD) in the corresponding horizontal plane_Ein)。

3. The turbulence insert as claimed in claim 1 or 2, characterized in that, viewed in the flow direction (SF) of the fibrous material suspension, a chamber (30) is arranged in each case after a respective inlet (22) of the inlet region (24), said chamber having a flow cross section enlarged in the flow direction (SF) for the inlet fluid (20) coming from the inlet (22).

4. The turbulence insert as recited in claim 3, characterized in that a partial flow (28) generated by the respective inlet fluid (20) is fed from the chamber (30) and the distribution of the respective inlet fluid (20) is preferably performed at an end of the chamber (30).

5. The turbulence insert as claimed in at least one of the preceding claims, characterized in that, in a section of the outlet region (24) arranged after the respective chamber (30), partial flows (28) generated by the respective inlet fluid (20) are directed such that they flow out of the associated outlet (26) of the outlet region (24) at least substantially parallel to one another.

6. The turbulence insert as claimed in at least one of the preceding claims, characterized in that inflow structures (32) for partial flows (28) fed from the respective chamber (30) which are guided in the outlet region (24) are provided in corner regions (34) provided on the downstream end of the chambers (30).

7. The turbulence insert as claimed in at least one of the preceding claims, characterized in that an outlet plane (AE) of a respective chamber (30), which is arranged on the beginning of an inflow structure (32) for a partial flow (28) fed from the respective chamber (30) that is guided in the outlet region (24), is at least substantially flat and oriented perpendicularly to the flow direction of the inlet fluid (20) concerned.

8. The turbulence insert as claimed in at least one of the preceding claims, characterized in that the respective chamber (30) is provided with a radius (R) in the region of a free edge or corner (34) of the outlet plane (AE) which is arranged between the inflow structures (32) which are guided in the outlet region (24) and/or with a taper (SK) as a flow divider in the central region of the outlet plane (AE).

9. The turbulence insert as recited in at least one of the preceding claims, characterized in that a continuous Diffuser (DS), a short Diffuser (DK) and/or a stepped diffuser (DSD) which enlarges the flow cross section for the inlet fluid (20) from the inlet (22) are arranged after the respective inlet (22) of the inlet region (18), respectively.

10. The turbulence insert as claimed in at least one of the preceding claims, characterized in that the pitch (T) of the outlets (26) of the outlet region (24) which are distributed in the cross-machine direction (CD) in the respective horizontal plane is such that_Aus) In the range of 5mm to 25mm, preferably 10mm to 20mm, and/or the pitch (T) of the inlets (22) distributed in the cross-machine direction (CD) in the respective horizontal plane_Ein) Greater than about 20 mm.

11. The turbulence insert as claimed in at least one of the preceding claims, characterized in that a separation point (TR) is provided in the flow direction between the respectively associated outlet (26) of the respective inlet (22) and outlet region (24), which separation point is preferably arranged immediately after the respective diffuser (DS, DK, DSD).

12. The turbulence insert as claimed in at least one of the preceding claims, characterized in that the turbulence insert (TE) is produced at least partially by an additive production method and preferably jointly by an additive production method, a plurality of flow channels or cells (40) of the turbulence insert (TE), preferably as modules having a defined module width (TM).

13. The turbulence insert as claimed in at least one of the preceding claims, characterized in that partial flows (28) produced by different inlet fluids (20) are guided in an outlet region (24) in an outlet channel (46) which is at least partially oriented at different angles (α) with respect to the flow direction of the inlet fluid (20), wherein the outlet channel is preferably concentrated onto the nozzle end of the associated headbox.

14. The turbulence insert as recited in at least one of the preceding claims, characterized in that a cross section of the respective partial flow (28) is enlarged by more than 10% from an outlet plane (AE) of the respective chamber (30) which is provided at an origin of an inflow structure (32) for the partial flow (28) fed from the respective chamber (30) directed in the outlet region (34) to an outlet side (A) of the respective outlet channel (46), and preferably the cross section of the respective partial flow (28) is enlarged stepwise, continuously and/or by means of a diffuser from the outlet plane (AE) of the respective chamber (30) to the outlet side (A) of the respective outlet channel (46).

15. A headbox for a machine for producing a fibrous web, in particular a paper or board web, having at least one turbulence insert (TE) according to at least one of the preceding claims.