The main components of the precast stainless steel water tank are veneer, sealing material, metal components and piping system. It has the following characteristics :1. The arbitrariness of the combined size. According to the different needs of users, arbitrary assembly volume range of 1-1000 cubic meters of water tank. 2. Water tank seal using specially developed molding products - sealing belt, with non-toxic, water resistance, oxidation resistance, good sealing advantages. The service life can reach about 50 years. Stainless steel reactor 3. The water tank is in good sanitary condition. The contact part with water is made of high quality stainless steel plate. 4. High structural strength of water tank. The reinforcement part is generally made of galvanized steel. 5. Strong applicability, strong corrosion resistance, long service life. Modules are assembled with modular composite materials and screws. 6. Easy to remove the water tank module. The stainless steel reactor can be assembled arbitrarily after disassembly. 7. Strong applicability, easy installation, no special equipment. 8. Environmental protection and energy saving. No secondary pollution. Try to avoid chromium removal and corrosion of stainless steel at high temperature welding.

The amount of liquid ammonia put into the reactor should be automatically controlled. Specific control requirements are as follows:

First, about L of the main material (quantitative packaging, no weighing, manual input) is put into the reactor, and then the liquid ammonia reaction is automatically put into the reactor. The liquid ammonia input is 40 kg. The key is to adjust the speed of liquid ammonia according to temperature (temperature range of 5℃)...

First, about L of the main material (quantitative packaging, no weighing, manual input) is put into the reactor, and then the liquid ammonia reaction is automatically put into the reactor. The liquid ammonia input is 40 kg. The key is to adjust the speed of liquid ammonia according to the temperature (temperature range is 5℃). For example, when the temperature reaches 50℃, adjust the position of the electric valve, open the valve, and increase the flow of liquid ammonia; When the temperature reaches 45℃, adjust the electric valve to reduce the flow of liquid ammonia. When the weight of liquid ammonia bottle is reduced by 40 kg, the electric valve is closed. Stainless steel reactor.

There are 10 reactors on site, each equipped with one cylinder. The workshop is 100 meters long and 30 meters wide and is equipped with a control room. At the same time, the control room can monitor the entire production process and set the temperature range of each reactor. The weight should be displayed on site, and the electric valve should be manually controlled if necessary.

Customers provide electric valves, manual valves, cylinders, the main control equipment is Siemens, other auxiliary equipment and temperature sensors can be selected by the designer.

1. Design a control system that can automatically control liquid ammonia input (feasible scheme), and consider manual control of liquid ammonia input. Record liquid ammonia input during production, so that customers can query the record at any time. The system should take into account the necessary safety protection measures and show some foreseeable failures in the field.

2. Draw the system configuration diagram of the system scheme, and indicate the communication protocol used when connecting devices in the system configuration diagram.

3. Select the equipment, list the specifications, models and quantities of the required equipment, write down the reasons and reasons for the selection of equipment, stainless steel reactor calculation of the total price of equipment purchase.

4. Can introduce the control process of the design system (can represent the flow chart), and write the characteristics of the system scheme.

5. The stability and reliability of the control system should be considered in the preparation of the design scheme. Easy to install and lay. Easy maintenance, equipment upgrade, low price.