water jet air ejector

Overview of spiral buffering water jet air extractor:

Spiral buffer type water jet air pump: - type high single channel, spiral channel energy-saving water jet air pump is an energy-saving product designed for condenser vacuum and other equipment vacuum. The energy-saving water jet air extractor is used for vacuuming the condenser of the steam turbine unit in thermal power plants and other equipment that requires vacuuming.

Spiral buffered water jet air extractor -:

1. Strong suction capacity, large safety margin, and low motor power consumption.

2. - Long, the suction rate is not affected by operating time, and the repair interval is long.

3. Start -, additional auxiliary pumping is required. Low requirements for the concentration and volume concentration of impurities in working water.

4. The throat outlet of the air extractor is equipped with a residual speed air extractor, which can simultaneously supply non condensing gas for the steam turbine to extract the shaft seal heater.

5. Due to gas phase bias, there is less vibration and wear during operation.

Spiral buffer type, single channel, - channel, - type high single channel, spiral channel energy-saving water jet air extractor group diagram 1

Spiral buffer water jet air extractor - output potential:

The spiral buffered water jet air extractor is used for vacuuming the condenser of the steam turbine unit in thermal power plants and other equipment that requires vacuuming- Spiral buffer water jet air extractor -1. Strong suction capacity, large safety margin, and low motor power consumption. 2. - Long, the suction rate is not affected by operating time, and the repair interval is long. 3. Start -, additional auxiliary pumping is required. Low requirements for the concentration and volume concentration of impurities in working water. 4. The throat outlet of the air extractor is equipped with a residual speed air extractor, which can simultaneously supply non condensing gas for the steam turbine to extract the shaft seal heater. 5. Due to gas phase bias, there is less vibration and wear during operation.

The structure principle of the spiral buffering water jet air pump is difficult to achieve in the design method of water jet air pumps produced by transmission, which is also the main reason for the difficulty in improving the efficiency of this air pump. According to the principle of high flow velocity at the end of the equal section throat and non-interference between the entire throat, our factory's spiral buffered water jet air extractor now provides a rear mounted residual velocity air extractor for the sub extraction of gas under the throat and at the outlet, which is used for the steam turbine to extract non condensing gas from the shaft seal heater, air cooler water chamber, and other areas.

Working principle of spiral buffering water jet air pump:

The working water with a constant pressure from the water jet pump enters the nozzle through the water chamber. The nozzle converts the pressure energy of pressure water into velocity energy, and the water flows out at high speed from the nozzle, causing air to be sucked into the chamber and creating a high degree of vacuum. The steam and gas mixture inside the condenser are extracted and enter the diffusion tube. The water flow speed slows down, and the pressure gradually increases. Finally, it is discharged from the diffusion tube at a pressure slightly higher than atmospheric pressure. A check valve is installed in the air intake chamber to prevent working water from being sucked into the condenser chamber in case of failure of the air extractor- The principle of the type water jet air extractor breaks the design mode of vertical staggered flow of water and gas. As we all know, the energy required for gas-phase movement comes entirely from the water beam. Therefore, to improve the vacuum of the condenser and ensure safe operation, it is necessary to use the gas from the water quality to wrap it:

1. In the suction chamber, the flow rate of water and the cross-section of a single water beam are selected to achieve dispersion of the water beam, while the dispersed water quality also has momentum. The gas is surrounded by a small amount of water, which is the minimum condition for achieving low consumption and high efficiency.

2. Inhalation of indoor water quality - achieving uniform contact with air. And allow all the gas trapped by the water beam to be compressed into the throat.

3. Stop the initial gas phase backflow deviation to cause shock and wear on the walls. It is difficult to achieve this simply by lengthening the throat. This is the geometry of the suction chamber, the shape of the throat, the ratio of throat diameter to nozzle area, the ratio of throat length to nozzle diameter, and the inlet parameters (water volume and water pressure).

4. The throat consists of three parts: gas injection, vortex strengthening, and pressurization. It can achieve the uniformity of two-phase flow, reduce gas resistance, eliminate gas phase bias, increase two-phase mass energy exchange, and utilize residual velocity to minimize the loss of discharged energy.

Technical description of spiral buffered water jet air extractor:

When renovating the spiral buffered water jet air pump equipment, the unit capacity, old unit air pump model, technical parameters, original water jet pump, and motor parameters must be provided.

2. Determine the purpose of the transformation: 1. Focus on improving vacuum. 2. Maintain the vacuum to reduce power consumption. 3- Balancing both.

3. Provide the inlet pipe diameter, air pipe diameter, and elevation of the original air extractor for our reference when producing the air extractor, making on-site installation convenient, time-saving, and reducing labor intensity.

Technical parameters of spiral buffered water jet air extractor: