MÁY SẢN XUẤT TRÀ HÒA TAN/ TRÀ TÚI LỌC

VTGREEN với đội ngũ chuyên gia tư vấn giàu kinh nghiệm, nhiệt huyết đã nghiên cứu và sẵn sàng “Chuyển giao công nghệ sản xuất Thực Phẩm” với các dịch vụ như sau:

§ Chuyển giao công thức: Nguyên liệu, Tỉ lệ, Chức năng và công dụng của nguyên liệu, Đơn giá nguyên liệu và giá thành sản phẩm.

§ Tư vấn sản xuất: Quy trình sản xuất, Diện tích nhà xưởng, Thiết bị – dây chuyền sản xuất,..

§ Tư vấn giấy phép: Giấy phép kinh doanh, Chứng nhận cơ sở đủ điều kiện An toàn thực phẩm, Kiểm định thực phẩm,..

§ Hướng dẫn áp dụng công nghệ tại cơ sở, nhà máy sản xuất.

Bằng tâm huyết và kinh nghiệm của mình, VTGREEN cam kết mang đến sự hài lòng cho Quý khách hàng từ chất lượng công nghệ, chế độ bảo hành cho đến tiến độ thực hiện cũng như tối ưu chi phí đầu tư. Liên hệ ngay với chúng tôi để được tư vấn chi tiết về dịch vụ chuyển giao sản phẩm của VTG.

Chuyển giao công nghệ sản xuất, Bán công thức, hướng dẫn sản xuất:

Asian. Station Secrets:

A closed station is the type of station where electrical equipment and transformers are placed indoors. Closed stations are usually assigned to public stations and customer stations.

   + Public stations are usually located in urban areas, new residential areas to ensure the beauty and safety of users.

    + Customer station is usually located in the premises of the current trend is to use the main ring (Ring Main Unit) instead of bar structure, knife, lead and fuse tube to protect the machine. The transformer has a capacity of less than 1000 kVA.

For this type of station, incoming and outgoing cables are usually underground. Ventilation doors must have nets for birds, snakes, mice and oil spills.

   b. Terminal Station:

For many complex stations that require the use of a ring-type power grid or cut-off cabinet that contains a variety of cutters, compact, weather-proof and shock-resistant, in these cases stationary stations Closed type is used.

Pre-fabricated blocks will be installed on concrete floors and used in urban and rural stations.

 - The advantages of this type of station are:

   + Optimization of materials and safety due to:

- Have the appropriate choice from the type of installation possible.

- Compliance with all applicable international standards and future standards

   + Reduced study and design time, reduced installation costs due to:

Minimize the coordination of several principles of construction and electrical engineering.

- Reliability, independent of major construction;

- Eliminates the need for a temporary connection at the beginning of site preparation;

- Simplified in construction, just provide a reinforced concrete foundation

   + Extremely simple in equipment installation and connection.

   + These types of stations are sure, neatly used in important places such as diplomatic offices, offices, hotels ....

    C. Gis Station: is an SF6 gas insulated distribution station. Characteristics of this station is that the station construction area is several dozens smaller than the outdoor station.

3. Transformer Station Diagrams:

B. Electric Shredder:

I. Theory of Intelligence:

  In the power grid there are two types of power:

   - Useful power P (kW) is the power generating public utility in the load.

   - Reactive power Q (kVAr) is the useless power, caused by the induction of the load such as electric motors, transformers, voltage converters ...

 To evaluate the effect of CSPK on the system one uses the power factor cosj, where: j = arctg P / Q.

   Asian. CSPK Q does not work but has a negative economic and technical impact:

  - Economically: we have to pay for the amount of CSPK consumed.

  - Technically: CSPK causes voltage drop on the line and power loss on the transmission line.

Therefore, we need to take a measure of CSPK Q to limit its effect. Also, we improve the coefficient cosj.

   b. Benefits When raising the power factor cosφ:

Reduce power losses on the components of the power supply (transformers, lines, etc.).

Reducing the voltage loss on the transmission line.

Increase the transmission capacity of lines and transformers.

II. Power factor improvement measures cosj:

    1. Method of improving the natural cosij coefficient: Increasing natural cos có means finding ways to reduce the amount of CSPK that the household consumes at the source.

Change and improve the technological process so that the electrical equipment works in the most reasonable mode.

Replace unloading engines with smaller capacity engines.

 Limit the engine to idling.

Where technology allows, use synchronous motors instead of asynchronous motors.

Replace the transformer working with non-load transformer with smaller capacity.

    2. Method of enhancing artificial cosm coefficient: This method is done by placing CSPK compensators in households consuming electricity. CSPK compensators include:

      Asian. Synchronization compensator: The main synchronous motor works in idle mode.

        Advantages: Synchronous compensators are both capable of producing CSPK, and also have the ability to consume the CSPK of the network.

       * Disadvantages: synchronous compensator with rotating parts to assemble, maintain and operate complex. Synchronous compensators are often used to compensate for large capacities.

      b. Compensating Capacitor: Make the current flow earlier than the voltage, thus generating the CSPK for the electrical network.

        * Advantage :

Low power, no rotation, so easy to maintain and operate.

It is possible to change the capacitor capacitance according to the development of the load.

Lower cost than synchronous compensator.

       * Disadvantages :

Sensitivity to voltage fluctuations and poor reliability, particularly susceptible to damage when short circuits or voltages exceed the norm.

When the capacitor is connected to the electrical network will have pulse current, while the capacitor cut off the network on the pole of the capacitor remain excess voltage can endanger the operator.

Use of capacitors in small and medium CSPK consumers (less than 5000 kVAr).

1. Structure and installation methods of the capacitor:

       Asian. Electric discharge resistance:

Capacitors are usually equipped with electrical discharge resistors to trap excess residuals inside.

The discharge capacitance of the capacitor is usually coupled to the capacitor. When the electrolytic capacitor is cut off, the excess charge discharges through the parallel resistors.

Causes the power loss of the capacitor

Must choose the appropriate discharge power to both promote the release of excess power and limit the power loss.

Usually choose to be 1W / 1kVAR.

       b. Compound coupling

The high voltage capacitors are usually made in one phase, when in the grid must match the triangular diagram.

Low voltage capacitors are usually made of three-phase type, which are pre-wired in a triangular line-voltage diagram.

CSPK capacitors are connected to the network according to the triangular scheme. Because: QD = Ud2 in C = (Ö3 .Uf) 2 in C = 3 QY

    2. Location of capacitor banks in distribution network:

Set up the high-level prison

Place the capacitor at the low pressure bar of the TBA

Place capacitor banks in the cabinets

Place the capacitor at the poles of the motors

   3. Compensation methods for CSPK by capacitors:

There are two main compensation methods:

      Asian. Compulsion (compensation): Compensation arrangement consists of one or more capacitors that make up the constant compensation. Control can be done by:

Manual: use CB or LBS (load - break switch)

Semi-automatic: use contactor

Apply directly to the load to power the compensation circuit at the same time when closing load.

     + Advantages: simple and low cost.

     + Disadvantage: vibration load is likely to lead to overcapacity. This is quite dangerous for systems using the transmitter.

 -> So, this method applies to those little changes.

      b. Fluid (using auto-compensated capacitors): use of automatic compensation capacitors, capable of varying the capacitor capacitance to ensure the power factor reaches the desired value.

     + Advantage: do not cause redundancy and ensure the desired power factor.

     + Disadvantages: cost is greater than static compensation.

 Therefore, this method applies at locations where the active power and reactive power vary over a very wide range.

   4. Calculate the Radiated Power and select Compartment Capacity:

      Asian. Simplistic Method:

(To select a capacitor for a load, we need to know the power (P) and the power factor (Cos φ) of that load):

Suppose we have the capacity of the load P

The power factor of the load is Cos φ1 → tg φ1 (before offset).

The power factor after offset is Cos φ2 → tg φ2.

The reactive power to compensate is Qb = P (tgφ1 - tgφ2).

From offset power, select the appropriate capacitor in the capacitor supplier catalog.

       b. Optimal Precaution Method Based on Non-Payment Conditions Fine:

- Consider the electricity bill related to the amount of kVArh consumed and record the number of kVArh to be paid later, choose the highest price kVArh invoice to pay (no exceptions).

Example: 15965 kVArh in January

Calculate the total time of operation that month, for example 220h the number of hours considered to be the hours at which the largest load system and load reached the highest peak value. In addition to the above, the reactive power consumption is free.

- Required power value:

[kVAr] = = Qbù. kVAr: kVAr number to pay.

T: number of hours of operation

- Compensation is often selected higher than calculated value.

- Some vendors provide logarithmic rules designed specifically for this calculation in their own price brackets. The above tool and the accompanying data help us to select the appropriate compensation and control scheme, and the constraints of the voltage harmonics in the electrical system. These harmonics require the use of capacitance norms (related to heat dissipation, voltage and current ratings) and coils or circuits for filtering harmonics.

IV. Automatic Compensation Cabinet (PFR):

    1. Working principle of automatic compensation

 - Compensation Cabinet consists of the following basic components:

Controller (PFR)

Capacitors are connected to the load via the atomat and contacts of the contactors.

CT current sensor

 - Principles of operation of PFR based on the above diagram:

The current signal is measured through the CT current transformer and the voltage signal is transferred to the PFR controller.

Then the microcontroller in the PFR controller calculates the deviation between the current and the voltage

       -> calculate the power factor. Due to the numerical method, the power factor can be accurately measured even with harmonics.

The controller is designed to optimize the reactive power compensation control. Offset power is calculated by continuously measuring the reactive power of the system and then compensated by switching off the capacitors.

    2. Introducing the micro automatic compensation module:

On the market today there are many types of auto compensators such as Shizuki, Epcos, Toyo, Mikro ... But much used in the station is Mikro.

       Asian. Mikro has four programs that work as follows:

    Manual mode (n-A): When this program is selected, the levels of the capacitor will be manually controlled by pressing the "UP" or "DOWN" key. Steps