CN108106870B - A kind of experimental system for the test of demisting and water saving device performance - Google Patents

Abstract

The present invention discloses a kind of experimental system for the test of demisting and water saving device performance, including wet-and-dry-bulb thermometer, gas-liquid mixed vapour generating unit, carrier fluid concentration mensuration unit and device performance test cell.The gas-liquid mixed vapour that gas-liquid mixed vapour generating unit generates is transported to demisting and water saving device by pipeline；It is inserted into probe tube in the pipeline, gas-liquid mixed vapour carrier fluid amount is measured by carrier fluid concentration mensuration unit；Utilize device performance test cell measurement device gas-liquid separation efficiency and device each section pressure drop.The present invention can provide different flow, the gas-liquid mixed vapour of carrier fluid amount, temperature, can in laboratory conditions to wet cooling tower difference operating condition when evacuation port at gas-liquid mixed vapour simulate；It is tested using this experimental system, demisting and water saving unit capacity-separative efficiency, pressure drop reference table can be measured, selected convenient for device.

Description

An experimental system for performance testing of mist removal and water collection devices

technical field

The invention relates to the fields of industrial energy saving and consumption reduction and environmental protection, in particular to an experimental system used for performance testing of a defogging and water collecting device.

Background technique

As an effective circulating water cooling equipment, cooling towers are widely used in industries such as electric power, chemical industry, metallurgy, papermaking and textiles that require a large amount of cooling water. Among them, the wet cooling tower is the most used type of cooling tower, which achieves the purpose of cooling by directly contacting the circulating water with a higher temperature with the cold air to achieve heat exchange. When the cooled circulating water is sent back to the circulating water system, part of the circulating water is evaporated or entrained by the air and discharged out of the tower. The moist and hot air entrained with droplets forms water mist after heat exchange with the cold air in the environment at the mouth of the cooling tower, which not only causes the loss of circulating water, but is also the main source of environmental problems such as haze and freezing of surrounding buildings in winter. Therefore, defogging the wet cooling tower and collecting water is beneficial to the improvement of the utilization rate of circulating water and the adjustment of the industrial water use mode; at the same time, controlling the water mist at the cooling tower exhaust port can reduce the formation of haze around the factory and avoid ambient air Quality deterioration and the spread of microorganisms such as Legionella. Due to the large volume of the cooling tower, the properties of the hot and humid gas at the exhaust port change with the seasons. Therefore, after the design of the defogging and water collecting device is completed, it is necessary to carry out performance testing to determine its gas-liquid separation efficiency under different working conditions and suitable operating conditions for post-optimization and promotion.

SUMMARY OF THE INVENTION

The invention overcomes the deficiencies of the prior art, provides an experimental system for performance testing of a mist removal and water collection device, and determines the gas-liquid separation efficiency and suitable operating conditions of the device under different working conditions, so as to perform mist removal and collection. The promotion of water devices can overcome the shortage of water droplets discharged with the air at the exhaust port at the top of the cooling tower, and achieve the purpose of saving energy and reducing consumption and protecting the environment.

The present invention is achieved through the following technical solutions:

An experimental system for testing the performance of a defogging and water-receiving device, including a dry and wet bulb thermometer for testing the atmospheric temperature and relative humidity in the environment where the experimental system is located; Temperature sensor, first pressure sensor, first rotameter, second temperature sensor, ultrasonic atomizer, gas-liquid mixing tank, liquid level gauge, outlet gate valve, inlet gate valve, outlet rotameter, inlet rotor Gas-liquid mixed steam generating unit composed of flow meter, first submersible pump, constant temperature water bath, step-down module and DC power supply; consists of second ball valve, fourth temperature sensor, third pressure sensor, microfiber filter cartridge, second The carrier liquid concentration measurement unit composed of the rotor flowmeter, the second gate valve, the third ball valve, and the vacuum pump; the third temperature sensor, the second pressure sensor, the defogging and water collecting device, the fourth pressure sensor, the water collecting tank, the fourth ball valve, Device performance test unit composed of fifth ball valve, second submersible pump, water supply tank, fifth pressure sensor, temperature and humidity meter. The gas-liquid mixed steam generated by the gas-liquid mixed steam generating unit is transported to the defogging and water collecting device through the pipeline; a sampling pipe is inserted into the pipeline, and the gas-liquid mixed steam carrier liquid is measured by the carrier liquid concentration measurement unit; the device performance test is used The unit measures the gas-liquid separation efficiency of the device and the pressure drop of each part of the device.

The connection structure of the gas-liquid mixed steam generating unit is as follows: the high-pressure vortex air pump is connected to the left side of the gas-liquid mixing tank through a pipeline, and the pipeline is provided with a first ball valve, a first gate valve, a first temperature sensor, a first pressure sensor and a first pressure sensor. A rotameter; an ultrasonic atomizer is connected below the gas-liquid mixing tank, a second temperature sensor is connected to the left side of the ultrasonic atomizer, a liquid level gauge is connected to the right side, a voltage reduction module and a DC power supply are connected to the bottom, and the ultrasonic atomizer is connected to the bottom. The carburetor is connected with the water inlet pipe and the constant temperature water bath through the water outlet pipe. The bottom of the water inlet pipe is connected with a first submersible pump. The water outlet pipe is provided with a water outlet pipe gate valve and a water outlet pipe rotor flowmeter. Rotameter.

The carrier liquid concentration measurement unit is arranged on the pipeline connected to the right side of the gas-liquid mixing tank, and the pipeline is sequentially connected with a second ball valve, a fourth temperature sensor, a third pressure sensor, a microfiber filter cartridge, and a second rotor. Flow meter, second gate valve, third ball valve and vacuum pump.

The right side of the gas-liquid mixing tank is connected to the cyclone separation unit of the device performance testing unit through a pipeline, the pipeline is provided with a third temperature sensor and a second pressure sensor, and the cyclone separation unit is connected to the diversion unit through an internal threaded pipe, and the guide The upper end of the flow unit is connected to the fiber coalescing unit through a flange. The right side of the fiber coalescing unit is connected with a fifth pressure sensor and a temperature and humidity meter. The drain pipe on the left side of the bottom of the separation unit is also connected with the water collecting tank, the right side of the inner threaded nozzle is connected with a fourth pressure sensor, and the right side of the bottom of the cyclone separation unit is connected with the water supply tank through the water inlet branch pipe, and the water inlet branch pipe is provided with a fourth ball valve and the fifth ball valve, the bottom end of the water inlet branch pipe is connected with a second submersible pump.

The mist removal and water collection device includes a cyclone separation unit composed of an underflow pipe, a drain pipe, a cone section, an air inlet pipe, an overflow pipe and a branch pipe installation hole; A diversion unit composed of a water cavity drain and a water outlet; a fiber coalescing unit composed of a fiber coalescing filter cartridge, a buffer chamber and an air outlet. The connection relationship is as follows: the upper end of the cyclone separation unit is connected to the diversion unit through an internal threaded nozzle, and the upper end of the diversion unit is connected to the fiber coalescing unit through a flange.

The upper end of the cyclone separation unit is a cylindrical air inlet pipe with a tangential air inlet, an overflow pipe is arranged at the center of the cylindrical section of the air inlet pipe, and a cone section is connected below the cylindrical section of the air inlet pipe through a flange. The lower end is provided with a cylindrical underflow pipe, the left and right sides of the underflow pipe are respectively provided with drainage pipes and branch pipe installation holes, and a drag reduction return pipe is arranged in the middle of the cyclone separation unit. The water collecting chamber drain port of the diversion unit is connected, and the bottom end extends into the bottom flow pipe of the cyclone separation unit. The microporous spray pipe is installed on the outside of the drag reduction return pipe to form a jacket structure. The water inlet branch pipe passes through the branch pipe installation hole and passes through The thread is connected with the micro-hole spray pipe. The drag reduction return pipe can stabilize the vortex formed in the cyclone separation unit and effectively reduce its pressure drop; at the same time, the water in the water collection cavity of the diversion unit is introduced into the cyclone separation unit, and then discharged through the drain pipe. The microporous spray pipe sprays an appropriate amount of water into the cyclone separation unit to promote the condensation of water vapor and enhance the effect of demisting and recovery; during the operation of the device, the spray amount is determined by the temperature of the hot and humid gas discharged from the cooling tower.

The structure of the guide unit is a conical shape with upper and lower openings, a water collecting cavity is arranged in the middle of the guide unit, a guide vane is arranged between the water collecting cavity and the casing of the guide unit, and the lower end of the guide unit is connected with the water collecting chamber. There is a water collecting cavity drainage port, and 2-4 drainage ports are arranged along the outer wall of the diversion unit shell and 1/3-1/4 away from the bottom surface of the diversion unit. The liquid flow can be discharged through the drain port. The flow guiding unit can change the airflow with strong vortex after passing through the cyclone separation unit into a more uniform flow and then send it to the fiber coalescing unit.

The fiber coalescing unit is provided with a fiber coalescing filter cartridge connected to the water collecting cavity, the top of the fiber coalescing filter cartridge is connected to the top of the fiber coalescing unit, and the outlet at the top of the fiber coalescing unit is connected to the fiber coalescing filter cartridge. connected.

The fiber coalescing unit is provided with a buffer cavity, the bottom end of the buffer cavity is connected with the outlet of the top end of the fiber coalescing unit, and an air outlet hole is arranged in the center of the top end of the buffer cavity.

The ratio of the distance h from the mouth of the drain pipe below the bottom of the cone section to the total height H of the swirl unit composed of the intake pipe and the cone section is 0 to 0.2, so as to adjust the height of the liquid seal of the bottom flow pipe at the bottom of the cone section. A high liquid sealing height will destroy the vortex formed in the cyclone separation unit; while a too low liquid sealing height is not conducive to the trapping of the liquid sealing water on the dispersed droplets. In the above technical solution, the casing of the guide unit, the guide vanes, and the water collecting cavity are all circular truncated structures with a cone apex angle of 50° to 70°, and a too small cone apex angle cannot integrate the airflow with vortices Uniform; and excessive cone apex angle will increase the volume of the device, resulting in a waste of materials and space.

The above-mentioned fiber coalescing unit is equipped with a fiber coalescing filter cartridge, and the filter material used is a polytetrafluoroethylene-coated polyester fiber non-woven fabric (Hebei Sitong Filter Factory), and the filtration accuracy is 3-5 μm, which is too small. If the filtration precision is too high, the pressure drop of the device will increase sharply and the energy consumption will increase; while the excessive filtration precision will lead to a decrease in the droplet recovery rate.

The inner wall of the above-mentioned wet cooling tower defogging and water collecting device is provided with a hydrophobic coating, for example, a super-hydrophobic nano-controllable self-polymerization coating coating containing silicon and fluorine functional groups is sprayed to reduce the friction between the air and the wall, and reduce the phenomenon of droplets hanging on the wall. .

Compared with the prior art, the beneficial effects of the present invention are:

(1) It can provide gas-liquid mixed steam with different flow rates, carrier liquid amounts and temperatures, and can simulate the gas-liquid mixed steam at the discharge port of the wet cooling tower under different working conditions under laboratory conditions;

(2) Using this experimental system to conduct experiments, the reference table of treatment capacity-separation efficiency and pressure drop of the defogging and water collecting device can be measured, which is convenient for device selection.

Description of drawings

1 is a schematic diagram of the connection structure of a flow guiding unit and a fiber coalescing unit;

Fig. 2 is the structural representation of cyclone separation unit;

FIG. 3 is a schematic structural diagram of a diversion unit;

Figure 4 is a schematic diagram of the structure of the drag reduction return pipe and the microporous spray pipe;

5 is a schematic diagram of the overall structure of the present invention;

Fig. 6 is the experimental system schematic diagram of the performance test of the defogging and water collecting device;

Among them: 1. Cyclone separation unit; 2. Internal thread nozzle; 3. Diversion unit; 4. Fiber coalescing unit; 5. Fiber coalescing filter cartridge; 6. Buffer chamber; 7. Underflow pipe; 8. Drain pipe; 9. Cone section; 10. Inlet pipe; 10-1, Tangential air inlet; 10-2, Cylindrical section; 11, Overflow pipe; 12, Branch pipe mounting hole; 13, Diversion unit shell; 14, Diversion Blade; 15, water collection chamber; 16, water collection chamber drain; 17, water outlet; 18, threaded interface; 19, drag reduction return pipe; 20, micro-hole spray pipe; 21, water inlet branch pipe; 22, outlet Air port; 23, wet and dry bulb thermometer; 24, high pressure vortex air pump; 25, first ball valve; 26, first gate valve; 27, first temperature sensor; 28, first pressure sensor; 29, first rotameter; 30 31, ultrasonic atomizer; 32, gas-liquid mixing tank; 33, liquid level gauge; 34, gate valve of water outlet pipe; 35, gate valve of water inlet pipe; 36, rotor flowmeter of water outlet pipe; 37, water inlet pipe rotameter; 38, first submersible pump; 39, constant temperature water bath; 40, step-down module; 41, DC power supply; 42, third temperature sensor; 43, second pressure sensor; 44, second ball valve; 45, Fourth temperature sensor; 46, third pressure sensor; 47, microfiber filter cartridge; 48, second rotameter; 49, second gate valve; 50, third ball valve; 51, vacuum pump; 52, fourth pressure sensor 53, water collection tank; 54, fourth ball valve; 55, fifth ball valve; 56, second submersible pump; 57, water supply tank; 58, fifth pressure sensor; 59, temperature and hygrometer.

Detailed ways

Below in conjunction with specific embodiment, further illustrate the technical scheme of the present invention:

An experimental system for testing the performance of a defogging and water collecting device, including a dry and wet bulb thermometer 23 for testing the atmospheric temperature and relative humidity of the environment where the experimental system is located; 26. The first temperature sensor 27, the first pressure sensor 28, the first rotameter 29, the second temperature sensor 30, the ultrasonic atomizer 31, the gas-liquid mixing tank 32, the liquid level gauge 33, the water outlet gate valve 34, the inlet Water pipe gate valve 35, water outlet pipe rotameter 36, water inlet pipe rotameter 37, first submersible pump 38, constant temperature water bath 39, step-down module 40, DC power supply 41 composed of gas-liquid mixed steam generating unit; by the second ball valve 44. The carrier liquid concentration measurement unit composed of the fourth temperature sensor 45, the third pressure sensor 46, the ultrafine fiber filter cartridge 47, the second rotameter 48, the second gate valve 49, the third ball valve 50, and the vacuum pump 51; Three temperature sensor 42, second pressure sensor 43, defogging and water collecting device, fourth pressure sensor 52, water collecting tank 53, fourth ball valve 54, fifth ball valve 55, second submersible pump 56, water supply tank 57, fifth pressure A device performance testing unit composed of a sensor 58, a temperature and humidity meter 59. The gas-liquid mixed steam generated by the gas-liquid mixed steam generating unit is transported to the defogging and water collecting device through the pipeline; a sampling pipe is inserted into the pipeline, and the gas-liquid mixed steam carrier liquid is measured by the carrier liquid concentration measurement unit; the device performance test is used The unit measures the gas-liquid separation efficiency of the device and the pressure drop of each part of the device.

The connection structure of the gas-liquid mixed steam generating unit is as follows: the high-pressure vortex air pump is connected to the left side of the gas-liquid mixing tank through a pipeline, and the pipeline is provided with a first ball valve, a first gate valve, a first temperature sensor, a first pressure sensor and a first pressure sensor. A rotameter; an ultrasonic atomizer is connected below the gas-liquid mixing tank, a second temperature sensor is connected to the left side of the ultrasonic atomizer, a liquid level gauge is connected to the right side, a voltage reduction module and a DC power supply are connected to the bottom, and the ultrasonic atomizer is connected to the bottom. The carburetor is connected with the water inlet pipe and the constant temperature water bath through the water outlet pipe. The bottom of the water inlet pipe is connected with a first submersible pump. The water outlet pipe is provided with a water outlet pipe gate valve and a water outlet pipe rotor flowmeter. Rotameter.

The carrier liquid concentration measurement unit is arranged on the pipeline connected to the right side of the gas-liquid mixing tank, and the pipeline is sequentially connected with a second ball valve, a fourth temperature sensor, a third pressure sensor, a microfiber filter cartridge, and a second rotor. Flow meter, second gate valve, third ball valve and vacuum pump.

The right side of the gas-liquid mixing tank is connected to the cyclone separation unit of the device performance testing unit through a pipeline, the pipeline is provided with a third temperature sensor and a second pressure sensor, and the cyclone separation unit is connected to the diversion unit through an internal threaded pipe, and the guide The upper end of the flow unit is connected to the fiber coalescing unit through a flange. The right side of the fiber coalescing unit is connected with a fifth pressure sensor and a temperature and humidity meter. The drain pipe on the left side of the bottom of the separation unit is also connected with the water collecting tank, the right side of the inner threaded nozzle is connected with a fourth pressure sensor, and the right side of the bottom of the cyclone separation unit is connected with the water supply tank through the water inlet branch pipe, and the water inlet branch pipe is provided with a fourth ball valve and the fifth ball valve, the bottom end of the water inlet branch pipe is connected with a second submersible pump.

The mist removal and water collection device includes a cyclone separation unit 1 composed of an underflow pipe 7, a drain pipe 8, a cone section 9, an air inlet pipe 10, an overflow pipe 11 and a branch pipe installation hole 12; The flow guide unit 3 composed of the flow vane 14 , the water collecting cavity 15 , the water collecting cavity drain port 16 and the drain port 17 ; The connection relationship is as follows: the upper end of the cyclone separation unit is connected to the diversion unit through the internal thread nozzle 2, and the upper end of the diversion unit is connected to the fiber coalescing unit through a flange.

The upper end of the cyclone separation unit is a cylindrical air inlet pipe with a tangential air inlet 10-1, an overflow pipe is arranged at the center of the cylindrical section 10-2 of the air inlet pipe, and the lower part of the cylindrical section of the air inlet pipe is connected by a flange There is a cone section, the lower end of the cone section is provided with a cylindrical underflow pipe, the left and right sides of the underflow pipe are respectively provided with drainage pipes and branch pipe installation holes, and a drag reduction return pipe 19 is arranged in the middle of the cyclone separation unit, and the top of the drag reduction return pipe is provided The threaded interface 18 at the top is connected to the drainage port of the water collection chamber of the diversion unit, and the bottom end extends into the underflow pipe of the cyclone separation unit. The branch pipe 21 passes through the branch pipe installation hole and is connected with the micro-hole spray pipe through threads. The drag reduction return pipe can stabilize the vortex formed in the cyclone separation unit and effectively reduce its pressure drop; at the same time, the water in the water collection cavity of the diversion unit is introduced into the cyclone separation unit, and then discharged through the drain pipe. The microporous spray pipe sprays an appropriate amount of water into the cyclone separation unit to promote the condensation of water vapor and enhance the effect of demisting and recovery; during the operation of the device, the spray amount is determined by the temperature of the hot and humid gas discharged from the cooling tower.

The structure of the guide unit is a conical shape with upper and lower openings, a water collecting cavity is arranged in the middle of the guide unit, a guide vane is arranged between the water collecting cavity and the casing of the guide unit, and the lower end of the guide unit is connected with the water collecting chamber. There is a water collecting cavity drainage port, and two drainage ports are arranged along the outer wall of the diversion unit shell and 1/3 away from the bottom surface of the diversion unit. Drain outlet. The flow guiding unit can change the airflow with strong vortex after passing through the cyclone separation unit into a more uniform flow and then send it to the fiber coalescing unit.

The fiber coalescing unit is provided with a fiber coalescing filter cartridge connected to the water collecting cavity, the top of the fiber coalescing filter cartridge is connected to the top of the fiber coalescing unit, and the outlet at the top of the fiber coalescing unit is connected to the fiber coalescing filter cartridge. connected.

The fiber coalescing unit is provided with a buffer cavity, the bottom end of the buffer cavity is connected with the outlet of the top end of the fiber coalescing unit, and an air outlet hole is arranged in the center of the top end of the buffer cavity.

The ratio of the distance h between the mouth of the drain pipe and the bottom of the cone section and the total height H of the swirl unit composed of the intake pipe and the cone section is 0.2, so as to adjust the height of the liquid seal of the underflow pipe at the bottom of the cone section 9, which is too high. A liquid seal height that is too low will destroy the vortex formed in the cyclone separation unit; while a liquid seal height that is too low is not conducive to the trapping of the liquid seal water on the dispersed droplets. In the above technical solution, the casing of the guide unit, the guide vanes and the water collecting cavity are all circular truncated structures with a cone apex angle of 50°, and a too small cone apex angle cannot evenly integrate the airflow with vortices; and Excessive cone apex angle will increase the volume of the device, resulting in waste of materials and space.

The above-mentioned fiber coalescing unit is equipped with a fiber coalescing filter cartridge, and the filter material used is a polytetrafluoroethylene-coated polyester fiber non-woven fabric (Hebei Sitong Filter Factory), and the filtration accuracy is 3 μm. Accuracy will lead to a sharp increase in the pressure drop of the device and increase energy consumption; while excessive filtration accuracy will lead to a decrease in droplet recovery.

The inner wall of the above-mentioned wet cooling tower defogging and water collecting device is provided with a hydrophobic coating, for example, a super-hydrophobic nano-controllable self-polymerization coating coating containing silicon and fluorine functional groups is sprayed to reduce the friction between the air and the wall, and reduce the phenomenon of droplets hanging on the wall. .

The experimental principle of the present invention is as follows:

The high-pressure vortex air pump transports the gas into the gas-liquid mixing tank, and mixes with the atomized droplets generated by the ultrasonic atomizer at the bottom of the gas-liquid mixing tank to form a gas-liquid mixed vapor, which provides the raw material gas for the performance test experiment.

The properties of the gas-liquid mixture are controlled by:

(1) The flow rate of the gas-liquid mixture is controlled by the flow rate of the high-pressure vortex air pump. Through the combined action of the first ball valve and the first gate valve, the flow rate of the high-pressure vortex air pump is controlled by the bypass adjustment method. flow. The flow rate of the high pressure vortex air pump is measured by the first rotameter. A first temperature sensor and a first pressure sensor are arranged in front of the first rotameter to measure the gas temperature and pressure for correcting the flow test value of the first rotameter.

(2) The amount of gas-liquid mixed vapor carrier liquid is controlled by the atomization amount of the ultrasonic atomizer. By changing the number of ultrasonic atomizers connected to the DC power supply, the amount of atomization is roughly adjusted, and the pressure-reducing module is used to adjust the working pressure of a single ultrasonic atomizer to fine-tune the amount of atomization. The working voltage is continuously adjusted within 0-24V. The atomization volume of the ultrasonic atomizer is affected by its diving depth, and the diving depth of the ultrasonic atomizer can be adjusted by adjusting the water level in the gas-liquid mixing tank. The water in the gas-liquid mixing tank forms a circulating flow with the water in the constant temperature water bath through the inlet and outlet pipes and the first submersible pump. By adjusting the opening of the gate valve of the outlet pipe and the gate valve of the inlet pipe, the water volume of the outlet pipe and the inlet pipe can be adjusted, so that the water level can be stabilized at the specified position. The gas-liquid mixing tank is provided with a liquid level gauge to indicate the water level in the gas-liquid mixing tank.

(3) The temperature of the gas-liquid mixture is controlled by the water temperature in the gas-liquid mixing tank, and the water temperature is measured by the second temperature sensor. As described in (2) above, the water in the gas-liquid mixing tank forms a circulating flow with the water in the constant temperature water bath through the inlet and outlet pipes, the first submersible pump, and the water temperature in the gas-liquid mixing tank can be controlled by adjusting the heating temperature of the constant temperature water bath. .

The gas-liquid mixed steam generated by the gas-liquid mixed steam generating unit is transported to the defogging and water collecting device through the pipeline, and a sampling tube is inserted into the pipeline, and the gas-liquid mixed vapor carrier liquid quantity is measured by the carrier liquid concentration measuring unit. Open the second ball valve to sample the gas-liquid mixture within a certain period of time. When the gas-liquid mixture passes through the ultra-fine fiber filter cartridge, the droplets contained in it are retained by the ultra-fine fiber filter cartridge. Weigh the ultra-fine fiber filter cartridge before and after sampling. The ratio of the quality difference before and after sampling to the sampling flow and sampling time is the carrier liquid volume of the gas-liquid mixture. The sampling adopts the isokinetic sampling method, which ensures that the gas velocity in the sampling port is equal to that of the gas-liquid mixture, and the velocity is calculated by the ratio of the flow rate to the flow area. The sampling flow is measured by the second rotameter and determined by the flow of the vacuum pump. The vacuum pump flow is jointly controlled by the second gate valve and the third ball valve. The temperature and pressure of the mixed steam in the main pipeline are measured by the third temperature sensor and the second pressure sensor. During sampling, the temperature and pressure of the gas-liquid mixture in the sampling pipeline are measured by the fourth temperature sensor and the third pressure sensor.

The gas-liquid mixed steam generated by the gas-liquid mixed steam generation unit is transported to the demisting and water collecting device of the device performance test unit through the pipeline. After the mixed gas enters the device through the air inlet, it forms the same rotation direction and axial direction in the cyclone separation unit The inner and outer spiral movements with opposite movement directions are shown in Figure 2. When the droplets entrained by the mixed gas spiral downward in the outer spiral area, due to the action of centrifugal force, the droplets move to the wall of the cyclone separation unit and converge into a liquid flow to the bottom flow pipe at the bottom of the cone section, and are discharged through the drain pipe. After the outer spiral movement, the uncollected droplets move up spirally along the outer wall of the micro-hole spray pipe with the gas. During the period, water is injected into the microporous spray pipe through the water inlet branch pipe, and water is sprayed into the cyclone separation unit at the same time, which can promote the condensation of water vapor contained in the hot and humid gas and capture part of the uncollected droplets in the internal spiral motion, enhancing the Demisting recovery effect.

When the air flow entrained with mist droplets spirals upward, and enters the diversion unit through the overflow pipe and the inner threaded nozzle in turn, the mist droplets collide with each other on the surface of the diversion vane driven by the airflow and gather together to form droplets until an annular liquid flow is formed. Drain outlet. When the airflow continues to move upward, it enters the fiber coalescing unit after passing through the guide unit, and the tiny droplets still entrained in the air and the droplets generated by further condensation during the movement converge into liquid droplets under the interception of the fiber coalescing filter cartridge. It enters the water collecting cavity of the diversion unit, and is transported by the drag reduction return pipe to the bottom underflow pipe of the cone section and then discharged into the water collecting tank by the drain pipe. The separation efficiency of the device is calculated by measuring the recovered water volume of the defogging and water collecting device within a certain period of time, that is, the water volume of the water collecting tank; the pressure before the inlet of the device is measured by the second pressure sensor; the outlet pressure of the cyclone separation unit is measured by the fourth pressure sensor, which is consistent with the first pressure sensor. The pressure drop of the cyclone separation unit is obtained by subtracting the pressure values of the two pressure sensors; the pressure outside the fiber coalescing filter cartridge in the diversion unit and the fiber coalescing unit is measured by the fifth pressure sensor, and the pressure value of the fourth pressure sensor is subtracted to obtain the diversion The pressure drop of the unit is subtracted from the atmospheric pressure to obtain the pressure drop of the fiber coalescing filter cartridge; the temperature and humidity of the temperature and humidity meter measure the temperature and humidity of the gas-liquid mixture at the outlet of the device.

The invention can provide gas-liquid mixed steam with different flow rates, carrier liquid amounts and temperatures, and can simulate the gas-liquid mixed steam at the discharge port of the wet cooling tower under different working conditions under laboratory conditions; using this experimental system to conduct experiments, The reference table of the treatment capacity-separation efficiency and pressure drop of the defogging and water collecting device can be measured, which is convenient for the selection of the device.

The present invention has been exemplarily described above. It should be noted that, without departing from the core of the present invention, any simple deformation, modification, or other equivalent replacements that can be performed by those skilled in the art without any creative effort fall into the scope of the present invention. The scope of protection of the invention.

Claims (8)

1. a kind of experimental system for the test of demisting and water saving device performance, which is characterized in that including for locating for experimental system The wet-and-dry-bulb thermometer that ambient air temperature, relative humidity are tested；By high-pressure vortex air pump, the first ball valve, the first gate valve, first Temperature sensor, first pressure sensor, the first rotor flowmeter, second temperature sensor, ultrasonic atomizer, gas-liquid mixed Tank, liquidometer, water outlet sluice valve, water inlet sluice valve, outlet pipe spinner flowmeter, water inlet pipe spinner flowmeter, the first immersible pump, The gas-liquid mixed vapour generating unit that thermostat water bath, voltage reduction module, DC power supply form；By the second ball valve, the 4th temperature sensing Device, third pressure sensor, superfine fibre filter cylinder, the second spinner flowmeter, the second gate valve, third ball valve, vacuum pump group at Carrier fluid concentration mensuration unit；By third temperature sensor, second pressure sensor, demisting and water saving device, the 4th pressure sensor, The device that catch basin, the 4th ball valve, the 5th ball valve, the second immersible pump, supply flume, the 5th pressure sensor, epidemic disaster meter form Performance test unit；The gas-liquid mixed vapour that gas-liquid mixed vapour generating unit generates is transported to demisting and water saving device by pipeline； It is inserted into probe tube in the pipeline, gas-liquid mixed vapour carrier fluid amount is measured by carrier fluid concentration mensuration unit；It is surveyed using device performance Try unit measurement device gas-liquid separation efficiency and device each section pressure drop；

The gas-liquid mixed vapour generating unit connection structure are as follows: high-pressure vortex air pump is connected to a gas-liquid mixed tank left side by pipeline Side is provided with the first ball valve, the first gate valve, the first temperature sensor, first pressure sensor and the first rotor flow on pipeline Meter；It is connected with ultrasonic atomizer below gas-liquid mixed tank, second temperature sensor, right side connection are connected on the left of ultrasonic atomizer There is liquidometer, bottom is connected with voltage reduction module and DC power supply, and ultrasonic atomizer passes through outlet pipe and water inlet pipe and water bath with thermostatic control Pot is connected, and water inlet bottom of the tube is connected with the first immersible pump, and water outlet sluice valve and outlet pipe spinner flowmeter are provided on outlet pipe, It is provided on water inlet pipe into water sluice valve and water inlet pipe spinner flowmeter；

The carrier fluid concentration mensuration unit is arranged in on the pipeline that connects on the right side of gas-liquid mixed tank, is connected in turn on pipeline Second ball valve, the 4th temperature sensor, third pressure sensor, superfine fibre filter cylinder, the second spinner flowmeter, the second gate valve, Third ball valve and vacuum pump；

It is connect by pipeline with the cyclonic separation unit of the device performance test cell on the right side of gas-liquid mixed tank, is set on pipeline It is equipped with third temperature sensor and second pressure sensor, cyclonic separation unit is taken over by internal screw thread and is connect with flow guiding unit, Flow guiding unit upper end connect by flange with fibre conglomerates unit, fibre conglomerates unit right side be connected with the 5th pressure sensor with Epidemic disaster meter, flow guiding unit left side is connected by the pipeline connecting with discharge outlet with catch basin, while cyclonic separation unit bottom The drainpipe in left side is also connected with catch basin, and internal screw thread adapter tube right side is connected with the 4th pressure sensor, cyclonic separation unit bottom It is connected by water inlet pipe with supply flume on the right side of portion, the 4th ball valve and the 5th ball valve, water inlet pipe bottom is provided on water inlet pipe End is connected with the second immersible pump.

2. a kind of experimental system for the test of demisting and water saving device performance according to claim 1, which is characterized in that institute The demisting and water saving device stated includes the whirlwind being made of underflow pipe, drainpipe, cone section, air inlet pipe, overflow pipe and arm installing hole Separative unit；The flow guiding unit being made of flow guiding unit shell, guide vane, water collection chamber, water collection chamber discharge outlet and discharge outlet；By The fibre conglomerates unit of fibre conglomerates filter cylinder, cushion chamber and gas outlet composition；Cyclonic separation unit upper end is taken over by internal screw thread It is connect with flow guiding unit, flow guiding unit upper end is connect by flange with fibre conglomerates unit；

The cyclonic separation unit, upper end are the cylindrical air inlet conduit with tangential admission mouth, the cylindrical section center of air inlet pipe Position is provided with overflow pipe, and there is cone section in air inlet pipe cylindrical section lower section by flanged joint, and cone section lower end is provided with cylindrical bottom Flow tube, the underflow pipe left and right sides are respectively arranged with drainpipe and arm installing hole, set in cyclonic separation unit bosom position It is equipped with drag reduction return pipe, drag reduction return pipe top is connected by the water collection chamber discharge outlet of hickey and flow guiding unit at the top of it It connects, bottom end extends in cyclonic separation unit underflow pipe, and micropore spray pipe is mounted on the outside of drag reduction return pipe, forms collet knot Structure, water inlet pipe passes through arm installing hole, and is connected by screw thread with micropore spray pipe；

The flow guiding unit structure is the cone of upper and lower opening, is provided with water collection chamber among flow guiding unit, water collection chamber with lead Guide vane is provided between stream cell enclosure, flow guiding unit lower end and water collection chamber are connected with water collection chamber discharge outlet, and edge is led Stream cell enclosure outer wall circumference is provided with discharge outlet；

The fibre conglomerates filter cylinder being connected with water collection chamber, fibre conglomerates filter cylinder top and fibre are provided in the fibre conglomerates unit Dimension coalescence unit top is connected, and the outlet on fibre conglomerates unit top is connected with fibre conglomerates filter cylinder.

3. a kind of experimental system for the test of demisting and water saving device performance according to claim 2, which is characterized in that institute The drainpipe nozzle stated lower than cone section bottom distance h with by air inlet pipe and the swirling flow unit that forms of cone section always the ratio between high H for 0~ 0.2。

4. a kind of experimental system for the test of demisting and water saving device performance according to claim 2, which is characterized in that institute Fibre conglomerates filter cylinder is lifted in the fibre conglomerates unit stated, filter material used is polyfluortetraethylefilm film coated polyester fiber non-woven fabric, Filtering accuracy is 3~5 μm.

5. a kind of experimental system for the test of demisting and water saving device performance according to claim 2, which is characterized in that institute The discharge outlet stated is arranged at away from flow guiding unit bottom surface 1/3-1/4, along flow guiding unit outer shell outer wall even circumferential spaced set 2-4.

6. a kind of experimental system for the test of demisting and water saving device performance according to claim 2, which is characterized in that institute Cushion chamber is provided on the fibre conglomerates unit stated, the bottom end of cushion chamber is connected with the outlet on fibre conglomerates unit top, buffering Chamber top center is provided with venthole.

7. a kind of experimental system for the test of demisting and water saving device performance according to claim 2, which is characterized in that institute The demisting and water saving device inner wall stated is provided with hydrophobic coating, to reduce air and wall-friction, reduces drop wall built-up and is detained now As.

8. a kind of experimental system for the test of demisting and water saving device performance according to claim 7, which is characterized in that institute Stating hydrophobic coating is the controllable autohemagglutination paint coatings of the super-hydrophobic nano containing fluosilicic functional group.