KR20040034211A - Cartridge filter tester for performance of Hydraulic stress resistance - Google Patents

Abstract

PURPOSE: An apparatus is provided to evaluate hydraulic pressure resistant performance of a cartridge filter by periodically supplying dirt water onto a surface of the cartridge filter. CONSTITUTION: A filter performance evaluating apparatus includes a steam generator(300), a pressurized air generator(100), a circulation system, a filter housing, a control valve system, a controller(600), and a monitoring terminal(700). The steam generator(300) generates steam having high temperature. The circulation system has a fluid reservoir(200), a pump(210) and a heat exchanger(230) which are connected to each other through a connection pipe. The filter housing is connected to the circulation system, the steam generator(300) and the pressurized air generator(100) through a connection pipe.

Description

{Cartridge filter tester for performance of hydraulic stress resistance}

The present invention relates to a filter performance test apparatus equipped with an automated operating system for evaluating the life cycle of the filter according to the temperature change and surface pressure increase of the cartridge type filter.

Separation processes have become very important in various fields throughout the cutting-edge semiconductor and bio industries.

In particular, in the beverage industry using water and the pharmaceutical industry that manufactures various injection liquids, the use of filters has been greatly expanded.In recent years, the cleanliness management for the production of giga-level semiconductors has grown in accordance with the rapid growth of the semiconductor industry. Has become a big concern.

As a result, the management of air cleanliness and the removal of nano-sized particles and microorganisms in wash water and process water have become a big problem.

However, in the case of air filters or oil filters for automobiles of buildings, aircrafts, and industries, the use history is long, and the research has been actively conducted, and various studies have been conducted. However, in the case of liquid filters, the environment of raw water and treated water Due to the wide variety of required performance, the results of research are very poor.

Accordingly, there is a great demand for an evaluation test method and an evaluation apparatus capable of proving the life cycle and environment of a liquid filter used for various purposes such as beverage and pharmaceutical additive water and semiconductor wafer cleaning water.

As for the oil filter, in Patent No. 10-0237779, for the manufacture of an evaluator for the performance test of the oil filter, for the performance evaluation for filtering the engine oil and removing foreign matters such as wear debris and carbon lumps such as metal. A filter was installed between the two pressure gauges, and the performance of the filter could be represented as a result of the pressure variation caused by the oil input into the filter.

In addition, in order to test the performance of the air compressor filter, Patent No. 10-0162519 is designed to measure the oil content in the compressed air, and defines the operating limit of the engine oil filter or automotive cabin filter according to the mileage of the car There is a situation. ]

However, unlike the oil filter or the air filter, in the case of the pharmaceutical or beverage manufacturing filter directly administered to the human body, the results of fatigue and fatigue resistance according to heat and pressure resistance, which can define the use period and environment of the filter, are very important. No evaluation device has been devised for evaluating characteristics.

In addition, the durability evaluation of the steam pressure used for filter sterilization and clean management is an important performance that can define the limit of use of the filter, and it is possible to vary the number of repetitions that the filter can withstand the repeated stress under constant steam pressure. It is expressed as the differential pressure of the filter under steam pressure, and the pressure resistance according to the temperature change is not considered at all.

Moreover, in order to give a constant fatigue, the experiment is conducted for a long time of several tens of hours due to the repeated stress part of several times, and this long time experiment causes economic loss due to highly skilled workers. Accurate experiments can be performed only if the artificially produced sewage is repeatedly administered with a constant concentration of fluid on the surface of the filter medium. Due to precipitation or coagulation, equipment errors frequently occur, making accurate internal pressure measurement by the injected particles very difficult.

An object of the present invention devised to solve the above problems is to change the performance of the filter according to the sterilization of the filter and the temperature change of the fluid to evaluate the proper use environment and cycle of use of the cartridge filter made of polymer membrane or fiber. To provide a reliable filter performance tester that can evaluate the service life of the filter's pressure resistance by periodically supplying artificially-generated sewage to the surface of the filter in order to measure and measure the use limit of the filter according to long-term use. There is a purpose.

1 is a conceptual diagram showing an embodiment of the present invention

2 is a flow chart showing the operation of the present invention

<Description of Symbols for Main Parts of Drawings>

100: compressed air generator 110: pressure gauge

120: air regulator 130: pressure gauge

140: air regulator 150: sewage injection tank

160: sewage control valve 200: reservoir

210: pump 220: fluid control valve

230: heat exchanger 240: flow meter

250: fluid control valve 260: water tank

270: pure water control valve 280: thermometer

290: heater 291: power

300: steam generator 310: thermometer

320: pressure gauge 400: forward filter housing

401: reverse filter housing 410: forward filter housing

411: reverse filter housing 420: pressure gauge

421: pressure gauge 422: pressure gauge

423: control valve 424: control valve

425: control valve 430: pressure gauge

431: pressure gauge 432: pressure gauge

433: control valve 434: control valve

435: control valve 440: heat exchanger

450: discharge tank 500: air control valve

510: sewage control valve 520: steam control valve

530: joint 540: joint

550: air control valve 600: controller

610: driver 620: processing unit

630: interface 700: terminal

In order to solve the above problems, the present invention provides a filter evaluation device comprising: a steam generator (300) for generating high temperature steam; Generating high pressure air

Compressed air generator (100); A circulation system connecting a reservoir 200 for storing the fluid consisting of sewage and pure water, a pump 210 for circulating the fluid, and a heat exchanger 230 for controlling the amount of heat of the fluid; A filter housing having a filter housing connected to the circulation system, the steam generator 300, the compressed air generator 100, and a filter to be tested; Sewage control valve 510 for controlling the flow of the fluid of the circulation system to the filter housing and the compressed air generated from the compressed air generator 100 is introduced into the sewage inlet tank 150 or the filter housing To control

A control valve system having air control valves 500 and 550 and a steam control valve 520 for controlling the inflow of steam generated from the steam generator into the filter housing; A controller 600 for controlling the operation of the circulation system, the filter housing and the control valve system and receiving pressure and temperature data; And a terminal (700) connected to the controller (600) to instruct operation of the circulation system, the filter housing and the control valve system, and to monitor the data received by the controller (600). Evaluation device.

Hereinafter, the configuration of the present invention will be described in detail.

Steam generator is a device for generating steam of high temperature and high pressure, it is configured using a boiler or a heat exchanger.

A steam generator may be attached to the steam generator to supply steam supplied to the filter housing to measure the temperature of the current steam to a predetermined temperature state.

Steam control valves are installed in the filter housing and during steam generation to control the steam supply from the steam generator.

The compressed air generator generates compressed air at high pressure, and is connected to a sewage inlet tank or filter housing to supply compressed air.

Compressed air generators may use an air compressor.

In order to maintain particle uniformity of the circulating fluid, a sewage filling tank is separately connected to the upper position of the reservoir.

Sewage may be a mixture of water and bentonite.

In order to prevent the precipitation of particles, the sewage inlet tank may be pressurized with nitrogen or air to minimize the amount of particles lost.

The pressurization by nitrogen or air supplies the compressed air generated from the compressed air generator to the sewage injection tank through the air control valve.

In addition, it is preferable to put a pressure gauge in front or rear of the air control valve to check the pressure of the compressed air supplied to the sewage inlet tank.

In order to prevent the sedimentation of sewage tanks, a pressurized circulation system was made, and the evaluator was manufactured by minimizing the sinking of the particles in the tank.

The pump circulation system consists of connecting the reservoir, the pump and the heat exchanger with connecting pipes so that the fluid circulates constantly.

The reservoir is mixed with the sewage and pure water is stored, and the sewage is supplied by the sewage input tank.

The reservoir is equipped with a heater for adjusting the fluid temperature therein, the outer wall is preferably provided with glass fibers or heat-resistant fibers to prevent heat loss.

When a heat exchanger for controlling the heat quantity of the fluid is included in the circulation system so that the temperature of the fluid is higher than the predetermined temperature by the heater in the reservoir, it is possible to enable active temperature control by the heat exchanger, not just the control of the heater.

Each component of the circulation system is connected by a connecting tube, which preferably uses a stainless steel pipe whose material is polished.

In addition, it is desirable to attach an electric valve that can be automatically adjusted by a computer to automatically control the flow of the fluid.

Sewage control valves are installed to control the supply of fluid from the circulation system to the filter housing.

The filter housing portion is composed of a plurality of forward and reverse housings.

The control valve is connected to the forward and reverse housings to maintain a predetermined pressure.

The sewage control valve, the air control valve, the steam control valve and the control valve may be composed of a solenoid valve.

All measuring instruments are connected to a computer system, and the results of pressure, temperature, and flow measurements are used to determine whether valves and pumps are operating, and the evaluation results can also be expressed on a computer database.

A controller is provided to control all operations of the circulation system, filter housing and control valve system and to receive pressure and temperature data.

The controller may include a driver for transmitting a control signal and receiving data, a processing device for analyzing commands and data, and an interface connecting the terminal and the controller.

The device controlled by the controller controls all valves and heaters belonging to the present invention.

Data input to the controller is the value of the thermometer or pressure gauge and the flow meter included in the present invention.

The place of command for operating the valve by the controller is the terminal.

One terminal may be provided or a plurality of terminals may be formed in a network.

In addition, the data received by the controller is monitored by the user through the terminal.

The controller may include a driver for transmitting a control signal and receiving data, a processing device for analyzing commands and data, and an interface connecting the terminal and the controller.

Looking at the working step of the present invention through FIG.

In step 100, the filter is initialized for filter evaluation.

In the initializing method, compressed air is blown into the filter housing to discharge all foreign matters inside the filter housing.

In step 110, the inspection method of the filter during the hydrostatic pressure test and the high temperature characteristic test is selected and inputted.

In step 120 it branches to step 200 to step 230 or step 300 to step 310 according to the input in step 110.

In the case of the water pressure test, the sewage is introduced into the reservoir in step 200.

In step 210 and step 220, the waste water is supplied to have a predetermined temperature in the circulation system and circulated to prevent precipitation.

If the temperature of the fluid circulated in step 230 matches the predetermined temperature, the circulating fluid is supplied to the filter housing in step 400.

In the case of checking the high temperature characteristic, steam is generated by the steam generator in step 300, and steam is supplied to the filter housing in step 400 when the temperature reaches a proper temperature.

When fluid or steam is supplied to the filter housing in step 400, the fluid or steam is supplied for a predetermined time with a constant pressure difference between both ends of the filter housing using a control valve provided in the filter housing in step 410.

In step 420, the pressure difference and time are compared.

In step 430, the filter having passed through the above process is separated from the filter housing to measure and record the bubble point and the air diffusion rate.

In step 440, the residue remaining in the filter housing is removed, and upon removal, the amount of heat retained in the residue is reabsorbed and utilized.

Hereinafter with reference to the accompanying drawings an embodiment of the present invention will be described in detail.

Compressed air generator 100 is an air compressor, it is connected by two connecting pipes are installed air control valves (500, 550).

The air control valves 500 and 550 are solenoid valves, and are automatically opened and closed by a controller connected to a computer.

Pressure gauges 110 and 130 and air regulators 120 and 140 are disposed between the air control valves 500 and 550 and the compressed air generator 100 to control the pressure of the air entering the filter housing and the sewage inlet tank.

In the circulation system, all the storage tanks 100 and the connection pipes are manufactured to be polished on the inner wall to minimize sedimentation of sewage particles on the inner wall.

The reservoir 200 is connected to the pump 210, the heat exchanger 230, and the flow meter 240 to configure a circulation system.

Fluid control valves 220 and 250 are provided between the reservoir 200 and the flowmeter 240 and between the pump 210 and the heat exchanger 230 to adjust the flow rate of the fluid passing through the circulation system.

In order to control the flow rate, a flow meter 240 was provided in the circulation system.

Sewage input tank 150 is introduced into the storage tank 200 is connected to the air control valve 540, it is configured to be introduced into the storage tank 200 after the artificial sewage slurry.

A sewage control valve 160 is disposed between the reservoir 200 and the sewage input tank 150 to adjust the amount of sewage supplied.

In addition, the reservoir 200 is equipped with a heater 290 therein to adjust the temperature of the fluid therein.

The temperature of the fluid is thermally balanced by the heat exchanger connected to the heater 290 and the reservoir 200 to maintain a constant temperature.

A thermometer 291 for determining the temperature of the fluid inside the reservoir 200 is provided.

The outer wall of the reservoir 200 is wrapped with glass fiber or heat dissipating fiber to prevent heat loss of the circulating fluid.

The sewage produced in the sewage inlet tank 150 is mixed with the pure water to be input at a predetermined concentration, and the introduced sewage is determined by the air control valve 6 connected to the sewage inlet tank 150.

The pure water is supplied through the water tank 260, the supply amount is adjusted by the pure water control valve (270).

In order to evaluate the wastewater above the boiling point, if a predetermined wastewater is supplied by a pre-programmed input, the wastewater control valve 160 prevents the inflow of wastewater and separates the flow of wastewater into the circulation system.

The sewage control valve 510 may be automatically adjusted to supply the filter housing fluid in which the filter for evaluation is mounted at a predetermined time interval according to a predetermined program of a computer.

The steam generator 300 supplies high temperature, high pressure steam, and is connected to a boiler (not shown).

A steam control valve 520 is provided to control the supply of steam from the steam generator 300.

The temperature and pressure of the steam is measured by the pressure gauge 320 and the thermometer 310 to adjust the output of the steam generator 300.

Compressed air, sewage, and steam passing through the air control valve 500, the sewage control valve 510, and the steam control valve 520 pass through the converging joint 530 and each filter housing in the joint 520. (400,401,410,411).

Filter housings equipped with evaluation filters are fitted in one set, one each forward and one reverse, allowing multiple sets to be fitted.

In this case, the forward direction is a direction in which the fluid moves from the outside of the filter to the inside, and the reverse direction is the opposite direction of the forward direction.

Pressure gauges 420, 422, 430, and 432 are mounted before and after the forward filter housings 400 and 410 for evaluating the filter, respectively, and each measured minute pressure variation is immediately recorded in a computer database.

In addition, before the reverse filter housings 421 and 431, pressure gauges 421 and 431 are mounted to measure the pressure of the fluid, and each measured minute pressure variation is immediately recorded in a computer database.

Compressed air generator is provided is connected to the sewage input tank 150 and the filter housing.

A pressure gauge and an air control valve may be provided between the compressed air generator and the sewage injection tank 150 or the filter housing to enable supply at a predetermined pressure.

Sewage or steam passing through the filter housing part is discharged to the discharge tank 450 through the heat exchanger 440.

The controller 600 is connected to the pressure gauge and the thermometer and all the valves.

As the controller 600, an embedded Linux system was used.

The interface 630, the processing device 620, and the driver 610 are provided inside the controller 600.

The controller 600 is connected to the terminal 700 through the interface 630, and at this time, a plurality of terminals may form a network.

In order to periodically apply the pressure of the fluid to the surface of the filter medium, an automatic control program is provided so that the valve is automatically adjusted and pressurized when a certain time is reached.

Process and method for measuring the performance of the filter by the apparatus of the present invention as described above are as follows.

In order to evaluate the water pressure performance according to the temperature change of the filter, after mixing water and bentonite in the sewage inlet tank 150, the compressed air passed through the air regulator 120 is added together with the pure water to the storage tank 200.

After being introduced, the mixture of sewage and pure water is circulated by the pump 210.

At this time, the fluid control valves 220 and 250 in the circulation system are opened,

The water control valve 510 is closed to prevent the sewage from being introduced into the filter housing part.

The temperature of the fluid is increased by the heat exchanger 230 and the heater 290 to a constant temperature to be evaluated, and after the temperature is stabilized, the sewage control valve 510 is opened to inject the fluid into the filter.

In this case, first of all, the control valves 423 and 433 of the forward filter housings 400 and 410 are opened to perform forward evaluation.

At this time, the pressure difference between the front and rear pressures of the filter housings 400 and 410 maintains a constant pressure for a predetermined time, and closes the sewage control valve 510 for a predetermined time so that the pressure is removed from the filter media surface.

In such a manner, the intermittent pressure is applied to the surface of the filter medium in a predetermined number of times.

After the experiment is conducted for a predetermined number of times, the pressure is increased again, and the intermittent pressure is periodically applied in the same manner as the above number.

After the evaluation, the air diffusion speed and bubble point of the filter are evaluated and recorded.

Next, the filter is mounted on the reverse housings 401 and 411, and the above evaluation is performed. Then, the air conversion speed and the bubble point are evaluated and recorded.

In order to evaluate at high temperature pressure beyond the boiling point of filthy water,

The sewage control valve 510 is closed, and the sewage contained in the housing is extracted out of the system by the compressed air passing through the air regulator 140.

Then, the steam generator 300 is supplied with steam at a constant pressure and temperature to flow in the forward housings 400 and 410 for a predetermined time.

At this time, the pressure is gradually increased so that the pressure difference between the pressure gauges 420 and 430 and the rear pressure gauges 422 and 432 of the entire housing does not occur largely.

After evaluating several times in the same manner as described above, the filter is detached from the housing, and the bubble point and the air diffusion rate are measured and recorded.

Next, the air control valve 500 is opened to cool the filter housing to a predetermined pressure by compressed air.

After cooling, the steam generator 300 is administered to the reverse filter housings 401 and 411 for a time programmed with steam at a constant pressure and temperature.

After evaluating several times in the same manner as described above, the filter is detached from the housing, and the bubble point and the air diffusion rate are measured and recorded.

Steam passing through the filter housing is condensed and discharged by the heat exchanger (440).

Control of all the above valve is made by the controller 600, the data of each pressure gauge and thermometer is transmitted to the terminal 700 through the controller 600 and monitored.

According to the present invention as described above, through the accurate performance test of the cartridge filter, the user's filter use cycle and the environment to be selected, the quality standards of the product used and the filter defects and pass-through products are checked before use to produce the product of the filter user It is possible to increase the stability.

Claims (9)

In the filter evaluation device, Steam generator 300 for generating high temperature steam; Compressed air generator 100 for generating high pressure air; A circulation system connecting a reservoir 200 for storing the fluid consisting of sewage and pure water, a pump 210 for circulating the fluid, and a heat exchanger 230 for controlling the amount of heat of the fluid; A filter housing having a filter housing connected to the circulation system, the steam generator 300, the compressed air generator 100, and a filter to be tested; Sewage control valve 510 for controlling the flow of the fluid of the circulation system to the filter housing portion, and compressed air generated from the compressed air generator 100 is introduced into the sewage inlet tank 150 or filter housing portion A control valve system having an air control valve (500, 550) for controlling this, and a steam control valve (520) for controlling the inflow of steam generated from the steam generator into the filter housing; A controller 600 for controlling the operation of the circulation system, the filter housing and the control valve system and receiving pressure, temperature and data; And Cartridge filter evaluation characterized in that it comprises a terminal 700 connected to the controller 600 to command the operation control of the circulation system, the filter housing and the control valve system, and monitor the data received by the controller 600 Device. The method of claim 1, The connection pipe is a filter evaluation device, characterized in that the material is a polished stainless steel pipe. The method of claim 1, The reservoir 200 is equipped with a heater 290 for adjusting the fluid temperature therein, the outer wall is a cartridge filter evaluation device, characterized in that the outer wall is provided with glass fibers or heat-resistant fibers to prevent heat loss. The method of claim 1, The wastewater is a cartridge filter evaluation device characterized in that the mixture of water and bentonite. The method of claim 1, Sewage is cartridge filter evaluation device, characterized in that supplied to the storage tank 200 by the compressed air input to the waste water injection tank (150). The method of claim 1, The filter housing part has a plurality of forward filter housings 400 and 410 and reverse filter housings 401 and 411, and the control valve is connected to the forward filter housings 400 and 410 and the reverse housings 401 and 411 to maintain a predetermined pressure. Cartridge filter evaluation apparatus. The method according to claim 1 or 6, Sewage control valve 510 and air control valve 500, steam control valve 520 and the control valve is a cartridge filter evaluation device, characterized in that the solenoid valve. The method of claim 1, The controller 600 may include a driver 610 for transmitting a control signal and receiving data, a processing device 620 for analyzing commands and data, and an interface 630 for connecting the terminal 700 and the controller 600. Cartridge filter evaluation apparatus comprising a. The method of claim 1, The terminal 700 is a cartridge filter evaluation device, characterized in that the plurality is formed into a network.