FLAPPER NOZZLE SYSTEM

Transcription

1 FLAPPER NOZZLE SYSTEM Product Code 323 Instruction manual Contents 1 Description 2 Specifications 3 Installation requirements 4 Installation Commissioning 5 Troubleshooting 6 Components used 7 Packing slip 8 Warranty 9 Experiments Im323 Page 1

2 Description The set up helps in understanding conversion of mechanical motion to pressure signal. It consists of flapper - nozzle mechanism, Dial gauge indicator, pressure gauges and air filter regulator. A regulated supply of pressure, usually over 20 psig, provides a source of air through the restriction. The nozzle is open at the end where the gap exists between the nozzle and flapper, and air escapes in this region. Air Regulator Air Supply Supply Pressure Signal Pressure Restriction Dial Gauge Flapper Nozzle Flapper Motion Nozzle Gap Specifications Product Flapper nozzle system Product code 323 Dial Gauge Least count 1µm Air filter regulator Range kg/cm 2 Pressure gauge Range kg/cm 2 (2 Nos) Overall dimensions W 300 x D 150 x H 250 mm Shipping details Gross volume 0.02m 3, Gross weight 4kg, Net weight 2kg Installation requirements Air supply Clean, oil and moisture free air, pressure 2 Bar, consumption 50 LPH Support table Size: 800Wx800Dx750H in mm Im323 Page 2

3 Installation Commissioning Unpack the box and place the set up on support table. Puncture the rubber caps on the top of pressure gauges with pin or needle. Connect air supply line to the air regulator. Provide oil and moisture free instrument quality compressed air with minimum 2 bar pressure. Fit dial gauge indicator on flapper support. Before tightening the locking screw provided on the back side of flapper support ensure that the dial gauge is pushed down by about 20 µm. Unlock the air filter regulator by pulling up the red ring on the knob and open it by rotating the knob counter clockwise. Adjust the air supply pressure to 20 psig by closing the air regulator. Change the gap between flapper and nozzle by gap adjusting screw and observe variation in signal pressure. Set up is now ready for conducting experiments. Troubleshooting Note: For component specific problems refer components manual Problems Possible causes / remedies No signal pressure or Clogged restrictor hole. Clean it. low signal pressure Signal pressure is Clogged nozzle hole. Clean it. high and nonresponsive to nozzle gap Low signal pressure Bent or misaligned flapper with the nozzle. Realign. at minimum gap Im323 Page 3

4 Components used Components Details Dial Gauge Make Baker, Type J-17-A, Reading 1micron, Graduation Pressure gauge Make Waaree, Code: PW2.5GNNNS /4"B, Dia.2.5", Gly. filled, Brass internals, S.S. casing, Range Kg/cm 2, 1/4"BSP (M) back connection Air filter regulator Make Airmatic, Model MB PAP-PD, Range 0-2 Kg/cm^2, Type Relieving Packing slip Box No.1/1 Size W350xD175xH300 mm; Volume:0.02m 3 Gross weight: 4kg Net weight: 2kg 1 Set up assembly 1 No 2 Instruction manual CD (Apex) 1 No Im323 Page 4

5 Warranty This product is warranted for a period of 12 months from the date of supply against manufacturing defects. You shall inform us in writing any defect in the system noticed during the warranty period. On receipt of your written notice, Apex at its option either repairs or replaces the product if proved to be defective as stated above. You shall not return any part of the system to us before receiving our confirmation to this effect. The foregoing warranty shall not apply to defects resulting from: Buyer/ User shall not have subjected the system to unauthorized alterations/ additions/ modifications. Unauthorized use of external software/ interfacing. Unauthorized maintenance by third party not authorized by Apex. Improper site utilities and/or maintenance. We do not take any responsibility for accidental injuries caused while working with the set up. Apex Innovations Pvt. Ltd. E9/1, MIDC, Kupwad, Sangli (Maharashtra) India Telefax: , san_apexinno@sancharnet.in Web: Im323 Page 5

6 Experiments To study characteristics of flapper nozzle system. Adjust the air supply to 20 psig by air regulator. Increase the gap between flapper and nozzle to get 3 psi signal pressure and note the dial reading. Decrease the gap between flapper and nozzle by gap adjusting screw. Note the dial gauge reading for each psi change in signal pressure. Ensure that supply pressure is maintained at 20 psi. Repeat the set of observation by increasing the gap. Tabulate the readings in the observation table and plot the graph of signal pressure verses nozzle gap. Refer MS Excel program for graph plotting. Signal pressure (psig) Flapper-Nozzle system Nozzle gap (µm) Im323 Page 6

7 1 To calculate gain of flapper nozzle system. Change in signal pressure Gain of flapper nozzle system=.. psi / mm. CorrespondingchangeinNozzlegap Refer MS Excel program for graph plotting Im323 Page 7