SU1761211A1 - Device for working fluid continuous filtrating using counterflow regenerating - Google Patents

Abstract

The use of cleaning liquids and regeneration of the filtering surface of the filter system in hydraulic, lubricant systems and fuel injection systems Sushch; h: the invention system of filtering the working fluid by means of the hsiototochno regeneration contains a gram of heating sensor and an generator of pressure of the action, the outlets of the cathode are connected to the inlet of the filter cavity. At the output of each filter, adjustable throttles / s are installed; hydraulic resistance is higher than p / p and the resistance in the filter is applied to the filter pressure pulse pressure generator. COOSGESM are yoosessom r8gene;: a1CH1I szder-shag dag- i rez,., oB, rt r v v and and - the entrance and the OY / ode with Stem and block r. 1 з п флл 3 2 silt

Description

The invention relates to filtration and can be used for cleaning liquids and regenerating the filtering surface of a filter system in hydraulic, lubricating and fuel feeding systems.

A device for cleaning the liquid and regenerating the filtering surface of the filtering system from parallel-connected filters is known, based on periodically changing the direction of flow of the liquid to be cleaned through the filtering surfaces by periodically changing the differential pressure of the liquid on one or more filters, with predetermined amplitudes and frequencies.

The disadvantage of such a device is the dependence of the flow of the purified liquid passing through the system a, -l o-grooves and the filtering effect about, its process that unacceptably hydraulic, and most of the used lubricating systems

The closest to the technical essence of the present invention is a system for continuous filtering of a working fluid with proximate regeneration of filtering surfaces containing filters the inlets and outlets of the cavity of which are connected to the supply and discharge pipelines of a working fluid with a switching circuit branched into two lines, each of which has a pair of filters the system includes a pulse pressure generator connected to

ABOUT

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uncut to line sections between filters

The disadvantages of this system are the high energy consumption for the regeneration process due to the necessity of providing the pulse generator with the supply value of a larger amount of fluid flow in the main line and the inability to control the counter current through the filters.

The aim of the invention is to increase the efficiency of the regeneration process at a given value of the supply of the purified liquid by the pressure generator of a pulsed action.

The goal is achieved by the fact that in the system of continuous filtration of working fluid with countercurrent regeneration, each line contains a filter and an adjustable choke with a larger hydraulic resistance than the filter, and a pressure pulse generator that creates alternating differential pressure across the filter is equipped with a regeneration process control unit associated with the control elements of the differential pressure of the fluid at the inlet and outlet of the system.

Figure 1 is a diagram of the filtering system; 2 is a functional diagram of a regeneration process control device;

The filtering system comprises a switching circuit A connected to lines 10 and 11, respectively, for supplying and discharging the working fluid.

The choke 1, 8 and the filter 2, 9 are respectively two lines B, B of the switching circuit A and are connected in parallel with each other. Hydraulic resistances of chokes 1, 8 are equal and larger in value than equal hydraulic resistances of filters 2, 9, i.e.

The body of each filter contains a bunker part designed to receive and precipitate filtered impurities.

A pulse pressure generator, consisting of an electric actuator 6 and a piston device 7, periodically changing the direction of fluid flow, is connected to the input cavities of filters 2 and 9.

To monitor the degree of clogging of the filters, differential pressure sensors (3, 4) are used.

To issue a command to turn on and turn off the engine 6 and maintain its specified angular speed of rotation L / zzd for the duration of the tead determined by the FRA 3 and 4, the device is intended

Regeneration Process Management (SISM) 5.

The regeneration process control unit (BUPR) consists of the 10 clock pulses (GTI) of the first counter 11, the first element 12 OR, the second counter 13 and the decoder 14, in series, the outputs of the decoder 14 being the outputs of the BUPR, the last output of which is connected via the second circuit 15 OR to the second control input of the first counter 11 and through the fourth 17 circuit OR to the control input of the second estimator 13

The control input of the second counter 13 through the fourth circuit 17 OR, the control input of the first counter 11 through the third circuit 16 OR and the second control input of the GTI 10 through the second circuit 15 OR connected to the output of the sensor 4 In addition, the output of the counter 11 is connected to its control the input through the third circuit 16 OR

The filtering system of the working fluid works as follows

When the pressure generator is turned off

pulsed action, the flow of fluid Go passes through the system along two parallel lines B and C (Fig. 1).

The regeneration process control unit (CIDM) (Fig. 2) is in the initial state. In this case, the first and second counters 11 and 13 are reset to zero, the GTI 10 is in standby mode.

As the filter barriers of filters 2, 9 are contaminated (Fig. 1), the differential in the filter system increases. When its maximum permissible value of DRmax is reached from the output of the FDR 3 (Fig. 2), a pulse is triggered, which starts the GTI 10 and translates the first counter 11, as well as element 12 OR the second counter 13 is in state 1. The state of the counter 13 and the corresponding binary code of the decoder 14 at the output determines the operation mode

BUDA and gives the command to turn on the engine 6 of the generator of pulse action. The last, work in a given mode periodically sets the required in magnitude and sign of pressure drop DR Р2-Рз

between the input cavities of filters 2 and 9 (Fig. 1).

In this case, a redistribution of flows occurs in the system, which leads to a countercurrent in one of the filters, for example, filter 2 and regeneration of its filter barriers, provided that an overpressure is generated in the direction of the line B segment.

At the same time, cleaning of the working fluid from impurities is carried out by the filter 9

When switching the pressure generator in a different direction, the countercurrent regeneration operation takes place in the filter 9 and the barrel liquid is cleaned by the filter 2 Fluid flows through the inductors 1-8 do not change their direction

The direction of the flow of fluid through the chokes 1, 8 is achieved by choosing the hydraulic resistance of the throttles Rflp of greater magnitude of the hydraulic resistance, filter of the RF, as well as selecting the operating mode of the pressure generator of the pulse generator that creates such a magnitude of the pressure differential amplitude that provides cleaning filtering elements about the process of regeneration

The duration of the generator operation of the pulsed pulse is predetermined by the duration of the signal formed at the output of the UUPR5 and is equal to the time

tpern required to achieve the minimum / maximum value of the pressure difference Pmin in the system during the regeneration of the fluid. The information about the value of tper1 is recorded in the BUPR with the first 11 V counter if the regeneration of the filters is completed.

time shorter tpef1 differential pressure / and the system will reach D PW / H DRL will work. -4 it will issue an impulse which stop i GTI 10 will reset the counters 11 and 13 of the signal from the input and output of the deoquator s thus will bring the BUPR to the initial state. at the input LL Yes corresponds to the engine stop bi, the regeneration process will stop. The system returns to its original state and the working fluid, the passage through parallel B and C of circuit A will again be cleaned with filters 2 and 9

If for the allowed time of regeoi

ip ° the magnitude of pressure transfer in the system does not reach the value of D Pmin and DRD4 does not work, the first counter 11 will give them a pulse, which through circuit 16 OR drops to another input of the same counter for zeroing it, and through circuit 12 OR to the input of the second counter 13 and translates it into a state 1 greater than the previous

This signal is processed in the decoder 14 and fed to the input of the ECU to form an accelerated mode of rotation of the engine 6, thereby providing a higher intensity of cleaning the filter elements B

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the angular velocity given by the BUTS is false, nor L / 2 will be the main until those are being fulfilled.

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Failure to comply with this condition with 13 translates into the following soy, i.e. The ECU will provide the following mode for the engine 6 The specified “rtso / tm process of perci eration will be scholed up until the moment when the mountain host is reached. vraeii5; This is the maximum .xp epodegy of his tskhy / Ј, eu cii chO

In the case of its arrmso with / yusv 1 oe x 1 v g r 2 i L k og. Ne o L L and

 ; ЯРгг-ЛЧй-дс NCHbi - eg. Me1 -.eo & vo uc о,. - well it, with. Emmztov that ktsro / r-st-ik 13 that, str it his L with: 5 ij 1 cooTbeTCiBv-c u ii ii and Oh. VI 1060 and C CDv and eR and e i R t er h 5 at - in m-st Ci i-jar ABAr IS- u rgsodi-UUPR in the event of h / e h rp on the rest of the state.

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you conclude 9 TLk tc -ciev f / ge obschen g and sooatit ze / cnoih3ve b l fi: use two times poi shch poi 3, ov 5 efficacy of regeneration 4 chi z1 pv jyu / x surfaces of ti r i s and i the countertool / dxsty only “through the filter uses / with this the generation of the pressure of the impassive geistvstr of lesser capacity In addition, the use of the device that, by means of the process of re-generation, will allow the filing of the legislation of the state

This rzssh / p is tas s prips ENI with moochischayuschihs siedstv OI CIKI in razpich nyl on svoemch Ha3uaiPHi io g / dogpicheski and lubrication systems syussbs h h povy sheniyu their effektiznssti and lophite s NOSTA neobspuhch / vaemoi a5oty with ktemy automatically This of its maximum efficiency and the efficiency of the proposed device, in the course of cgds, will achieve the law of change in the pressure drop of a fluid between the connection of the throttle filter and filter

Stage effects, i.e. when the duration of the processes of cleaning fluid and regeneration of the filtering surface will be approximately equal, while the magnitude of the amplitude of these step effects will provide the minimum backflow in the filters and the absence of counterflow in the throttle x.

Claims (2)

Claims 1. A system for continuous filtration of a working fluid with countercurrent regeneration, comprising parallel-installed filters and a pulse pressure generator, the outputs of which are connected to the input cavities of the filters, characterized in that 0 five increasing the efficiency of the filtering process and reducing the energy consumption for regeneration, the system further comprises adjustable inductors installed at the inlet of each filter and a regeneration process control unit containing sensors for maximum and minimum pressure difference between the inlet and outlet of the filtering system and the control unit, with the sensor outputs connected through a control unit to the input of a pressure pulse generator. 2. Pop. 1 system, distinguished by the fact that the hydraulic resistance of adjustable chokes exceeds the hydraulic resistance of the filters at the beginning of their regeneration. 1 FIG. 2