Metering pump engineering technical regulations and related implementation guidelines (2)

4.4 The motor rated power should be at least equal to K times the maximum shaft power of the metering pump (including the power loss of the gear box, coupling). K value is selected according to the following table. Maximum shaft power Pa (kW) Maximum shaft power Pa (kW) K Pa ≤ 3150% Pa ≤ 19125% 19Pa> 55110% 4.5 Effective NPSHa NPSHr and necessary NPSHr should be based on the same reference plane. When the difference between NPSHa and NPSHr is less than or equal to 0.6m, the NPSH should be carried out. 5. Structural Design 5.1 Pressure-Bearing Parts 5.1.1 The maximum permissible outlet pressure of the pump shall be at least equal to 110% of the rated outlet pressure of the pump. 5.1.2 All pressure parts (including the impact of the import pressure area) should be designed to allow the maximum outlet pressure pumping temperature, the allowable stress of the material taken: for domestic pump, should not be greater than HG20531-93 (cast iron, steel Container) maximum allowable stress value; Imported pumps, should not exceed ASMESectionVIII provisions of the maximum allowable stress value. 5.2 Interfaces 5.2.1 All interfaces are flanged unless otherwise specified on the data sheet. 5.2.2 Unless otherwise specified, domestic pump inlet and outlet connecting flange shall comply with the provisions of GB9112, import pump inlet and outlet connecting flange shall comply with the provisions of ANSIB16.1 and 16.5. Flanges with a diameter or thickness greater than the above are also permissible. 5.2.3 Import and export flanges should be taken at the same level of pressure flange. 5.3 Plunger Pumps 5.3.1 The stuffing box shall be fitted with a packing ring for flushing or lubricating the packing. 5.3.2 should ensure that the liquid end packing seal leakage liquid does not enter the power side. 5.4 diaphragm pump 5.4.1 single diaphragm pump diaphragm or double diaphragm pump first diaphragm should be limited agencies. 5.4.2 Double Diaphragm The two diaphragms of the pump should be filled with inert liquid (and the process medium on both sides of the diaphragm, the hydraulic oil should not be mixed), and a probe should be provided to alert the diaphragm when the diaphragm ruptures. 5.5 Bearing Bearings should be the standard form, shall not be made by the manufacturer's own non-standard bearings. 5.6 Buffers If specified on the datasheet, the import and export bouncers shall be provided by the seller and shall be of the type negotiated jointly by the buyer and the seller. 5.7 safety valve 5.7.1 diaphragm pump oil chamber safety valve should be able to automatically reset and adjust, repair, easy to replace, the set pressure should be at least 110% of the rated pressure of the metering pump. 5.7.2 If specified in the data sheet, the external relief valve for the plunger pump shall be provided by the seller. 5.8 Auxiliary piping 5.8.1 If piping systems such as lubrication, cooling and seal flushing are required, the seller shall provide and install it on the pump and / or base. 5.8.2 The plumbing, fittings, etc. of all piping systems shall be not less than 1/2 in. (13 mm) thick and shall not have a wall thickness of less than 1.6 mm (1/16 in.). 5.8.3 Pipe fittings of 1-1 / 4 (32mm), 3-1/2 (90mm), 7 (175mm), 9 (225mm) inches shall not be used unless otherwise specified.

High Speed Door Accessories

About high speed Door Accessories:

1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box

2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light

For some main accessories, here is detain introduction:

1).24G radar sensor:

Brand: Hofic

Technology: Microwave processor

Maintain time: 0.5s

Protection: IP54

Transmitting frequency: 24.125GHz

Maximum installation height: <5meter

Transmitting power density: <5mw/cm2

Power consumption: <1W(VA)

Installation angle: 0-90°(lengthways) -30-30°(crosswise)

Supply voltage: AC&DC 12V-30V

2).Photocell:

Approval CE & ISO9001

Power supply AC/DC 12-30V

Static current 25A

Action current 40mA

Mounting distance Max 10m

NO or NC contact Done by NO./NC. contact selection

Working environment temperature -42℃ to +45℃

Working environment humidity 10 to 90%RH

Appearance dimensions( controller) 123*50*32mm(L*W*H)

Appearance dimensions(Magic eye head) 19*13mm(L*D)

3). Remote control

Operating Voltage: AC220V/50HZ+-20%

Transmit power:≤100mW;Super regenerative module, strong anti-interference

Operating temperature:-30℃-+70℃

Working frequency: 433MHZ;transmitter 1527, millions of encoding chip

Accept sensitivity:≤110dB

Manipulation method: electric remote control

Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip

Configure the function: Up, down, stop, anti-lock full-featured reproduction

4). Magnetic loop

Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V

Power: <2VA

Continued electrical output: 7A / 250V AC

Frequency range: 20 to 200K Hz

Response time: infinity (factory setting) or adjust maintain time

Sensitivity: 0.01% to 0.1% divided into 3 levels

Protection level: IP30

Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2

Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH

Operating temperature: -25 ℃ to 70 ℃

Storage temperature: -40 ℃ to 85 ℃

Relative humidity: <90% non-condensing

Temperature compensation: automatic compensation up to 50 ℃ / h

Connection type: 11 pin DIN rail socket

Dimensions: 41 * 78 * 85 mm (width * height * length)

Weight: 250 grams

5). manual push button

This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.

Door Exit Button Push To Exit Switch Door Opener For Access Control Security

Main Feature

Fashionable appearance

Made of ABS Plastic

Easy to install and operate

Used for access control

Specification

Mechanical Life: 500,000 test

Material: Plastic

6). Limit switch encoder

Voltage: DC5V-24V

Output voltage: high voltage≥85%Vcc, low voltage≤0.5V

Maximum mechanical speed:6000rpm

Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.

Current consumption:≤30mA

Response frequency: 0-100KHZ

Protection: waterproof,oil proof,dust prevention, IP54

The output code system: binary code

Operating life: MTBF≥30000(+25℃,2000rpm)

Rotational inertia:4.0x10-8kgm²

Maximum load:radial direction20N

Axial direction:10N

Weight: about 0.4kg

High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories

Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.highspeedshutterdoor.com