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1. (WO2018142019) APPARATUS FOR MEASURING THE DEWATERING OF A PAPER MACHINE AT DIFFERENT POINTS OF THE WET END AND A METHOD FOR IMPLEMENTING IT

Pub. No.:    WO/2018/142019    International Application No.:    PCT/FI2018/050020
Publication Date: Fri Aug 10 01:59:59 CEST 2018 International Filing Date: Fri Jan 12 00:59:59 CET 2018
IPC: G01F 1/34
G01F 1/40
G01F 15/08
G01F 23/14
D21F 1/66
D21G 9/00
D21D 5/26
B01D 19/00
D21F 3/10
Applicants: RUNTECH SYSTEMS OY
Inventors: KARVINEN, Juha
Title: APPARATUS FOR MEASURING THE DEWATERING OF A PAPER MACHINE AT DIFFERENT POINTS OF THE WET END AND A METHOD FOR IMPLEMENTING IT
Abstract:
The object of the invention is an apparatus and a method for measuring dewatering in the wet end of a paper machine. What is essential in the invention is that the measuring system (26) comprises an essentially horizontal inlet pipe (10) on the machine level (11), which pipe is installed in the measuring receptacle (27), and in that the separation of air (22) is performed in an expanded pipe section (15) made in the inlet pipe (10) and in the outlet pipe (16) connected to it. A weir plate is installed in the measuring receptacle (27) of the measuring system (26), the weir plate functioning as a measuring weir (8) for measuring the amount of the dewatering flow, and from a pressure difference transmitter (20) installed on one side, which transmitter measures the height of the water surface produced by the measuring weir (8) for measuring the amount of water (7).