Chengfeng Instrument Intelligent electromagnetic flowmeter is developed based on the standard manufacturing system. Its advanced design concept ensures high precision and high reliability of the product. Compared with the old electromagnetic flowmeter, it has high measurement accuracy and reliability. Strong, good stability, complete functions, long service life, etc. We can install three large blocks, as follows: Second, install the straight pipe requirements First of all, the sensor itself can not be used as a load support point, it can not support the adjacent work pipeline There should be a pipe bearing holding it. In order to obtain normal measurement accuracy, the electromagnetic flow sensor must also have a straight pipe section of a certain length upstream, but its length is lower than that of most other flow meters. 90o elbow, T-tube, concentric reducer, and full-opening valve shall be 5 times the diameter (5D) of the straight pipe section from the sensor's inlet flange connection surface; valves with different opening degrees shall require 10D; the downstream straight pipe segment shall be (2 ~ 3) D; but to prevent the butterfly valve plate protruding into the sensor measuring tube. The lengths of the upstream and downstream straight pipe sections proposed by various standards or verification regulations are also inconsistent and are summarized in Table 2. The requirements are higher than usual. This is due to the requirement to achieve the current class 0.5 accuracy meter. First, the installation of the sensor 1) As much as possible to avoid the negative pressure in the measuring tube; 2) When measuring the mixed phase fluid, choose the place that will not cause phase separation; when measuring the two-component liquid, avoid installing in the downstream where the mixing is not uniform; when measuring the chemical reaction pipeline, install it in the downstream of the fully completed reaction section; 3) Avoid high concentrations of corrosive gases in the surrounding environment as much as possible; 4) Avoid large electric motors, large transformers, etc. in the vicinity to avoid electromagnetic interference; 5) Avoid exposure to sunlight as much as possible; 3. The axis of the mounting position and flow direction measuring electrode must be approximately horizontal; the measuring pipeline must be completely filled Liquid; at least 5xD (D is the inner diameter of the flowmeter) straight pipe section in front of the flowmeter, and at least 3xD (D is the inner diameter of the flowmeter) straight section at the rear; can be installed behind the flowmeter for easy installation and removal Install pipe expansion joints. The flow direction of the fluid is the same as the direction of the arrow of the flowmeter; a vacuum inside the pipeline will damage the inner lining of the flowmeter, and special attention must be paid; there should be no strong electromagnetic field near the flowmeter; there should be sufficient space near the flowmeter for installation And maintenance; If the measurement pipeline vibration, on both sides of the flowmeter should have a fixed bearing; when measuring mixed liquids with different media, the minimum distance between the mixing point and the flowmeter must be 30 × D (D is the flowmeter inner diameter) length. Changzhou Chengfeng electromagnetic flowmeter, the domestic high-end flow meter brand, to meet customer needs first, quality first, allowing customers to use the rest assured. The reputation of Changzhou Chengfeng electromagnetic flow meter in the industry and customer feedback are all satisfactory: high precision, durability, long service life, low failure rate, and good after-sales service. These are the customers' evaluations of us. The customers' recognition of Changzhou Chengfeng is the driving force for our progress. We are striving to develop new technologies, improve product performance, and adopt high-quality materials. We are meticulous in the quality of our products and ensure the passing rate of production inspection is 100%. . Cheng Feng instrument, only to do fine, customer satisfaction is our driving force.
A4 Paper Machine
This is A4 Paper Making Machine,writing and printing paper making machine.
According to the different paper grade and working speed, this kind of paper machine is needed to select the way of papermaking, dewatering structure of press section, dryer cylinder bank, sizing and finishing equipments.
Sheet forming can use the open-type headbox, air-cushion headbox, and hydraulic headbox, gap former and inclined wire former. According to the paper uniformity requirement, it can use distributor roll or finishing surface roll.
Press dewatering type is multi-roll and multi-press nip press rather than large-diameter press. As the low basis weight and wet strength of this kind of paper, it usually makes the low strength wet sheet attached to the felt or guide rolls during each section mutual transferring and full web leading as much as possible.
Dryer section: dryer cylinder group. Paper leading: active or passive paper rope system. Finishing equipment: To choose according to the paper grade requirement.
Now we introduce the technical proposal and structural drawing of Fourdrinier advanced printing paper machine, which we made for Taiqian Minrui Huatong Paper Company in Henan province, China. The advanced printing paper of this company is the famous brand in China.
Trimmed width: 2640mm
Working speed: 400m/min
Basis weight: 50-100g/sq.m.
Headbox: Air-cushion headbox
Forming table length: 15m
Suction flat box with all stainless steel micro-crystal cover.
Press section: four rolls two press nips
The wet sheet is stripped by pick-up suction unit.
The second under press nip rubber blind bottom roll diameter is Φ800mm, with drive unit;
The suction top roll diameter is Φ800mm, with drive unit.
The top press nip is made by a stone roll and a rubber roll. The rubber roll diameter isΦ800mm, with drive unit;
The stone roll diameter is Φ850mm, with cut squirt.
This structure ensures the low strength wet sheet can press smoothly and paper breaks can be reduced.
The smooth press rubber bottom roll diameter is Φ800mm; the top stone roll diameter isΦ850mm. The paper leading roll has the drive unit.
The dryer section has 32 dryer cylinders with the diameter of Φ1800mm, which is divided into five groups: three groups for before-sizing, two groups for after-sizing. The top and bottom felt of first group and the group at the back of sizing machine is equipped with six felt drying cylinder with the diameter of Φ1250mm, which can dry the moisture well and improve the drying efficiency.
The paper leading roll has the drive unit. The paper leading type is three-stage passive paper rope system.
Sizing machine: inclined type surface-sizing machine.
Calender: four roll three press nips; the number is decided by the demands.
Reeler: horizontal pneumatic reeling machine.
If you are interested in our products, please feel free to contact us for more information, we are glad to give you the competitive quotation upon receipt of your detailed requirements.
A4 Paper Making Machine,A4 Paper Machine,Writing And Printing Paper Machine,A4 Copy Paper Making Machine Dandong Tianshin Automatization Technology Co.,Ltd , https://www.ctpmmachine.com