Closed condensate recovery is a complex system engineering, the system uses the principles of fluid mechanics, single-phase flow and two-phase flow, the system applies centralized hydrophobic injection technology, high and low pressure pipeline common network technology, and uses the automatic pressurization technology of steam kinetic energy to smoothly lead the high-temperature condensate back to the condensate recovery unit under low back pressure or no back pressure. After the dirt remover, steam-water separation, fast discharge of condensate, pressurized cavitation eliminator, combined with flexible liquid level self-adjustment device and exhaust steam suction device, the high-temperature condensate is stably transported to the user, and the pressure in the condensate recovery unit is low. The optimized design of the cavitation elimination device and piping changes the cavitation conditions of the pump, and the high-temperature pump does not cavitate in the whole closed system.

Basic principle

When the system is running, the high-temperature condensate generated by the heating equipment first enters the residual pressure conveying pipe network and device through the trap, and when the pressure of a single pipeline or multiple pipelines is equal, the condensate directly enters the recovery device; When the pressure of the multi-line pipeline is unequal, install the auxiliary device multi-channel collector to make the condensate enter the recycler smoothly. (Note: The dotted line is the scope of supply). After the condensate enters the recovery device, the centrifugal pump is controlled by the signal from the liquid level transmitter to the PLC through the residual pressure utilization, steam-water separation, drainage pressurization, cavitation elimination and other devices, so that the condensate can be successfully pressurized and recovered.

Performance characteristics

1. Mechatronics automatic control, automatic switching operation of double pumps, automatic sound and light alarm, safe and reliable operation.

2. The hot condensate is all closed-type recycling, which has no secondary steam escape, and avoids the condensate contact with the air and the pollution of water quality by other impurities, and the recovered condensate can be directly used as the make-up water for the furnace.

3. The application of advanced steam-water separation and vapor-liquid two-phase automatic balance adjustment technology and cavitation elimination technology eliminates the cavitation phenomenon of centrifugal pump and ensures the normal operation of the pump.

4. Advanced design technology, compact overall structure, small size, easy to install and use.

Numbering instructions

Type I: The electric pump runs intermittently, that is, when the liquid level reaches the set upper limit, the single pump starts, and when the lower limit is reached, the pump stops working, and the double pump can switch to work regularly according to the set program; When the liquid level reaches the upper limit, the double pump starts, and the sound and light alarm, when the lower limit is reached, the double pump stops working and the sound and light alarm.

Type II: The centrifugal pump runs continuously, which can be controlled by PLC programmable controller and regulating valve to keep the electric pump in continuous operation. (When the pump is running continuously, it can be equipped with a regulating valve and a corresponding valve)

Type III: anti-corrosion, explosion-proof, frequency conversion speed regulation, remote control and other special requirements.

Selection requirements

1. Determine the recovery medium (such as high corrosive media should be pointed out);

2. Determine the maximum condensate treatment capacity;

3. Determine the operation mode of the equipment (intermittent operation, continuous operation, special requirements);

4. Determine the maximum working pressure and maximum working temperature of the steam system and each return pipeline;

5. Determine the equipment control mode (on-site control, remote control);

6. Determine the maximum back pressure of the pump operation: that is, the resistance of the condensate recovery system;

7. Determine the environmental conditions and installation location of the pump (considering the cold winter in the northern region, it is recommended to install it indoors);

8. Other requirements: Determine the model according to the relevant parameter table of the system.