Abstract Electric device (electric actuator) is a mechatronic device that drives the valve to open and close to realize the function of the valve, which plays a key role in the reliable operation of the valve. The performance parameters of the electric device include torque, stroke, pitch, operating time, speed, stem diameter, and the like. This paper analyzes the quotation data of manufacturers in previous procurement projects, establishes mathematical models, and studies the main factors affecting the cost of electric devices.
Key words valve electric device performance parameter mathematical model price First, electric device function Typical electric device consists of motor, gear unit, hand wheel, switch and signal unit, plug and socket connection electrical connection, output shaft six parts. When the actuator receives the valve action signal, the motor starts, and the valve stem nut on the output shaft is driven by the two-stage deceleration (gear and worm) of the gear unit to drive the valve stem to realize the opening and closing function of the valve. In order to ensure the normal opening and closing function of the valve, the electric device mainly controls the torque and opening of the valve through the torque switch and the limit switch.
Second, the basic type of electric device classification electric device, can be divided into multi-turn, partial-rotation two drive modes. The multi-turn electric device is mainly used for driving to operate more than 360° to realize the opening and closing of the valve, and is mainly used for the gate valve and the shut-off valve device; the partial rotary electric device is mainly used for driving the valve running the 0 90° stroke, such as a butterfly valve and a ball valve. Plug valves and other equipment.
The multi-turn valve switch requires the actuator to provide output torque to the valve stem, and the threaded stem converts the torque into the required thrust of the valve to open and close the valve. Part of the rotary valve switch requires the actuator to provide the output torque to directly drive the valve flap to make a 90° rotation to realize the opening and closing of the valve.
III. Analysis of parameters affecting the price of electric equipment (1) Selection of electric equipment selection parameters and price of electric equipment in previous projects. For multi-turn valves, all or part of the following input parameters are provided by the valve manufacturer: torque (directly given or by Thrust estimation), stroke, pitch, action time, speed (valve stroke, pitch, action time), stem diameter, and then retrieve the output torque (or thrust) by outputting the data sheet of the selected brand's electrical equipment. And the maximum number of electric devices that allow the stem diameter to meet the requirements. The input parameters for the partial rotary valve are: torque, operating time and stem diameter.
(II) Mathematical analysis of the price parameters affecting the manufacturer's quotation selection table of the multi-turn electric device, the linear regression analysis method is used to analyze the influence of each parameter on the quotation. Linear regression is widely used in the field of mathematical statistics analysis. It is mainly used to determine the quantitative relationship between two or more variables. For example, given a variable Y and some variables x1,...Xn, these variables may be related to Y. Correlation, linear regression analysis can be used to quantify the correlation between Y and xj, and evaluate which xj has the greatest impact on Y. The mathematical analysis software PASW Statistics analyzes the following conclusions:
In order to study the influence of five independent variables (valve stroke, pitch, output torque, maximum allowable stem diameter, output speed) on the dependent variable (equipment price), the regression analysis model in mathematical statistics is used to analyze the dependence between variables. Analysis was performed using the mathematical analysis software PASW Statistics. The linear regression model of the dependent variable y and the independent variables x1, x2...xi is: y=β0+β1x1+β2x2+...+xiβi; where β0 is called the regression constant, and β1, β2...βi is called the regression coefficient, indicating The variation of the dependent variable y caused when the variable changes by one unit.
In order to compare the influence of the five independent variables (stroke, pitch, output torque, maximum allowable stem diameter, output speed) on the dependent variable (equipment price), the linear regression model can be used to calculate the regression coefficient of the independent variable and compare its absolute value. The larger the absolute value, the greater the impact on the price, so that the conclusion can be drawn. The PASW Statistics software calculates the results as follows:
The absolute values ​​of the normalized regression coefficients for stroke, pitch, output torque, maximum allowable stem diameter, and output speed are 0.199, 0.084, 0.722, 0.173, and 0.267, respectively.
Comparing the results, the output torque normalized regression coefficient is the largest, followed by the output speed. It can be concluded that among the five independent variables, the output torque and output speed have the greatest influence on the price of the dependent variable equipment.
For the partial rotary electric device, since it only needs to rotate 90°, the valve switching action can be realized, the torque is large, the rotation speed is low, and the valve stroke time can be used instead of the rotation speed as one of the price parameters. As with multi-turn electric devices, torque and travel time have the greatest impact on equipment prices.
IV. Analysis Conclusions The linear regression method can be used to analyze the output torque and output speed as the main factors affecting the cost of the electric device. The greater the torque of the electric device, the greater the power, the greater the power, the larger the motor and the gearbox are required, resulting in an increase in the price of the electric device; other parameters such as stroke, pitch, and maximum allowable stem diameter only affect the electric device and The valve interface, and the interface type has little influence on the internal selection of the electric device. As long as the valve interface is determined, the electric device supplier can pay attention to the connection with the valve.
Description
* Sheel:
1. The Maxload Electric Chain Hoist is made of light aluminum alloy shell, light but hard.
2. With cooling fin, easy and quick Bring the Heat out.
* Break System:
1. Side Magnetic Braking Device, Ensure lock the hoist
2. Mechanical braker, Dual braking system, much more safety.
* Limit Switch:
With up & down Limit Switch, to prohibit the Chains from exceeding for safety.
* Chain:
FEC G80 Chain, Origina imported from Japan. Anti-Rust and Anti-corrosion
* Electromagnetic contactor:
1. With Schneider Electric (TESSIC), can be used safely under high frequency.
2. Can be installed Variable-Vrequency Drive (VFD Electric) Can be suitable for Singlle Phase Power supply.
* Inverse phase sequence protecting device:
It is sepcial electrical installation which controls the circuit not to work in case of wiring error in the power supply.
* Gear:
The gear made of alloy steel, Through the heat treatment.
* Level of Protection Grade(IP Grade):
1. Hoist IP Grade: IP54
2. Push Buttom IP Grade: IP65
* Power supply:
All kinds of voltage can be custom-made. 200V-660V, 50HZ/60HZ, 1P/3P
* Working Grade:
M4/1Am
Versatile performance
Two hoist speeds as standard
Versatile adaptability to any task
Simple exchange of the load handling device thanks to quick-change coupling
For right-hand and left-hand operation
Specifications:
Type
Capacity
Standard
Lifting
Lifting Motor
Trolley Motor
I-Beam
Power
Rotation
Phases
Voltage
Frequency
Power
Rotation
Trolley
HHBD00501-2S
0.5
3
6.8
0.75
1440
3
200-600
50
0.4
1440
11/21
58-153
HHBD0101-2S
1
3
6.6
1.5
1440
3
200-600
50
0.4
1440
11/21
58-153
HHBD0102-2S
1
3
3.4
0.75
1440
3
200-600
50
0.4
1440
11/21
58-153
HHBD01501-2S
1.5
3
8.8
3.0
1440
3
200-600
50
0.4
1440
11/21
82-178
HHBD0201-2S
2
3
6.6
3.0
1440
3
200-600
50
0.4
1440
11/21
82-178
HHBD0202-2S
2
3
3.3
1.5
1440
3
200-600
50
0.4
1440
11/21
82-178
HHBD02501-2S
2.5
3
5.4
3.0
1440
3
200-600
50
0.75
1440
11/21
100-178
HHBD0301-2S
3
3
5.4
3.0
1440
3
200-600
50
0.75
1440
11/21
100-178
HHBD0302-2S
3
3
4.4
3.0
1440
3
200-600
50
0.75
1440
11/21
100-178
HHBD0303-2S
3
3
2.2
1.5
1440
3
200-600
50
0.75
1440
11/21
100-178
HHBD0502-2S
5
3
2.7
3.0
1440
3
200-600
50
0.75
1440
11/21
100-178
(ton)
Lifting
Height
(m)
Speed
(m/min)
(m/m)
(Kw)
speed
(r/min)
(v)
(Hz/s)
(Kw)
speed
(r/min)
speed
(m/min)
High operating quality
Convenient single-handed handling and guidance of loads weighing up to 250 kg
Quick-change coupling for a variety of load handling attachments (load hooks, pantograph tongs, clamping and shaft grippers, parallel gripper systems, specifically developed load handling attachments)
Service-friendly thanks to diagnostics interface
High safety and reliability
24 V contactor control
FEM classification from 1Am to 4m
Slipping clutch with speed monitoring
No brake adjustment
No load dropping thanks to slipping clutch arranged in front of the brake
Operating limit switches
Products show:
Long service life
Gearbox, brake and slipping clutch maintenance-free for up to 10 years
Aluminium motor, gearbox and electrical cover parts provided with UV-resistant powder coating
Robust cylindrical-rotor motor with fan and separate brake beneath the electrical cover
Hoist Questions
To send Electric Hoist most competitive price for you, please kindly send me details:
1. What is the lift capacity? 1T? 2T,5T-
2. What is the lift height? 6m? 9m-
3. Do you need hoist with single lifting speed or double lifting speed?
4. Do you need hoist with trolley to move on the beam or without trolley? Single travel speed or double travel speed?
5. What is the voltage?380V, 50Hz, 3 phase? 220V, 60HZ,3phase? Or something else.
6. Will used in Inflammable and explosive gas/ alkali and acid factory?
7. How many hoists do you need?
Our Services
1.Client
We treasure and try to understand all the different needs of our clients and seek to forge a long term professional relationship with them. The satisfaction of each and every customer is our main goal and motivation in conducting our business.
2. People
We work as a team and treat each other with respect. Our solid, capable and knowledgeable team is valued as the greatest asset and an integral part of the business.
3. Product
Our products are of HIGH quality standards and always come with certificate of compliance by the manufacturers.
4. Performance
We aim to achieve high level of performance and satisfaction to both our client and people, which include delivering high quality services and treating people with integrity.
5. Free sample and OEM service
We can provide free samples to you and we also have OEM service, we can put your logo on the label and the information you need on the webbing too.
Electric Chain Hoist
Electric Chain Hoist,Electric Chain Fall Hoist,Electric Chain Hoist With Trolley,5Ton Electric Chain Hoist
Hebei Liston Lifting Rigging Manufacturing Co., Ltd. , https://www.liftingriggingfactory.com