SU1527054A1 - Apparatus for testing moisture separators of pressure regulators of vehicle pneumatic brake system - Google Patents

Abstract

The invention relates to the automotive industry and relates to devices for testing moisture separators incorporated in the combined air pressure regulators in vehicle brake systems. The purpose of the invention is to increase the versatility and quality of work. The device contains a source of compressed air 1, connected by the inlet air line 2 to the source 3 of atmospheric air of high humidity, and the outlet air line 8 to the receiver 9 through the moisture separator 51 and the tank 54 for collecting condensate. Air inlet line 2 is disconnected from the air source of high humidity. An additional receiver 13, a test moisture separator 37, installed after the contamination chamber 30 in the test chamber 34, which is made in the form of a set of transparent sealed rings 35 and 36, are introduced into the device. 1 Cp. File, 1 sg.

Description

This invention relates to automotive engineering and. relates to devices for testing moisture separators incorporated in the combined air pressure regulators in vehicle brake systems.

The purpose of the invention is to increase the versatility and quality of work.

The drawing shows a schematic diagram of the device.

The device comprises a source of compressed air 1 with an inlet air line 2, which can be disconnected and connected to the source 3 of high humidity of atmospheric air. Source 3 is a tank filled with water, above which nozzles 4 are located, communicated with pressure air line 5 via disconnecting valve 6, Source 3 is equipped with a moisture meter 7. Source 1 is equipped with an exhaust air line 8 that communicates with the receiver 9. Line 8 is provided with a safety valve 1m with valve 10, as well as with single-body cranes 11 and 12, through valve 12, line 8 communicates directly with the receiver 13, and through valve 11 also with it, but already through unit 14 dehumidifiers

The dryer unit 14 includes adsorbers 15 and 16 of the selective message or line 8 with receiver 13, or receiver 13 with atmosphere through throttle 17 and pneumatic control valves 18 and 19. Vk. Locking and turning off the valves 18 and 19 is carried out through the master logic unit 20.

Receivers 13 are equipped with devices for monitoring the state of compressed air: pressure gauges 21 and 22, thermometers 23 and moisture meters 24c. Receiver 13 is also equipped with a flow meter 25. After the receiver 13 and flow meter 25, the air line 8 is equipped with disconnecting valves 26 and 27.

The crane 26 is connected to the cavity 28 of the storage chamber 29, in which U is installed the injector 30. A contaminant is poured into the cavity 28. The outlet 31 of the chamber 29 communicates with the discharge air line 8 after the crane 26 and with the same after the crane 27 through the disconnecting valve 32. In addition, the output 31 of the chamber 30 through the disconnecting valve 33 communicates with the entrance of the test chamber 34, which contains a set of removable left

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and right transparent sealed rings 35 and 36 s Between the latter, the test moisture separator 37 is located, having an inlet 38 and an outlet 39, separated by a filter element and communicated with the ends of the water tubular gauge 40 And output 39 is in communication with a set of removable right rings 36 and input 38 through the discharge line 41 - with a discharge hole 42 made in the spool 43 of the distributor 44. Moreover, its rodless cavity 45 can selectively communicate with the atmosphere and with the receiver 9 via the solenoid valve 46, the frequency of switching on and off of the valve 46 adjusts the logical logic device 47. The right-hand block of the removable rings connects through a split valve 48 to a receiver, which can communicate with the atmosphere through the release valve 49.

After the disconnecting cranes 27 and 32 of the air outlet line 8, together. with the inlet of the pressure regulator 50, in which the test moisture separator 51 is installed, which has inlet and outlet cavities 52 and 53. The inlet cavity 52 and the moisture separator 51 communicate with the line 8 before the regulator inlet and with the mixture 54 to collect condensate through line 55 and the hole 56 a relief in the spool 57 of the distributor 58, the rodless cavity 59 of which is connected to the input of the pressure regulator 50.

The output cavity 53 of the separator is directly communicated through the valve 60 with the receiver 9, as well as with it through the check valve 61 of the regulator 50,

The inlet and outlet cavities 52 and 53 of the moisture separator 51 are separated by a filter element and communicated with the ends of the water tubular manometer 61, the spools 43 and 57 of the valves 58 are connected to the counters 62 cycles

The device works as follows.

In case it is necessary to test the water traps 37 and 5 with high humidity atmospheric air, connect the inlet air line 2 to the reservoir of source 3. Then, through line 5 through the open valve 6, compressed air is fed under pressure from a constant source, for example, from factory air lines. Compressed air, passage through nozzles 4, sprays

water at the bottom of the tank, creating a water mist. Moreover, the humidity of the fog is measured with a moisture meter.

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Next, the compressor 1 is turned on, which sucks the humid air into the exhaust air line 8. The pressure gauge 21 controls the pressure of the compressed air OU.

If the humidity of the air suits the testers, then the valve 11 is closed and the valve 12 is open. Compressed air enters receiver 13 where it is controlled

separator condensate is discharged into tank 54 "

With the reverse operation of the regulator 50, but already at the lower limit of the operating pressure, the drain line 55 closes, pressure in the cavity 59 appears, the cycle of operation of the regulator 50 repeats

The testers, after weighing the dimensional memosity 54 before and after the tests, as well as recording the readings of the instruments 21-25 installed on the receivers 13 and 9, i.e. before and after the regulator 5b with the isometric 22, the thermometer 23, the moisture moisture separator 51, can be measured 24 and a flow meter 25,

If the humidity value needs to be set differently, the valve 11 is opened and the valve 12o is closed. Compressed air. They pass through a block 14 of dehumidifiers 20. Moreover, the logical pneumatic unit 20 is tuned to a certain frequency of operation of distributors 18 and 19, on which the adsorption depends and regulate the cleaning of compressed air at a given humidity of atmospheric air. When finished testing, turn off source I and release compressed air from the system by opening valve 49.

For testing the moisture separator 51 at various degrees of contamination of compressed air close valve 49,

separator condensate is discharged into tank 54 "

With the reverse operation of the regulator 50, but already at the lower limit of the operating pressure, the drain line 55 closes, pressure in the cavity 59 appears, the cycle of operation of the regulator 50 repeats

Testers, after weighing the dimensional memosity 54 before and after the tests, and also recording the readings of the instruments 21–25 installed on the receivers 13 and 9, i.e., before and after the regulator 5b with the test separator 51, can

To determine the quality of cleaning compressed air at a given humidity of atmospheric air. When finished testing, turn off source I and release compressed air from the system by opening valve 49.

For testing the moisture separator 51 at various degrees of contamination of compressed air close valve 49,

Adsorbent non-absorption 15 and 16. Next, the hedgehog-25 switch on source 1, producing non-open air with the necessary humidity, enters receiver 13, where it is controlled by instruments 21-25.

Depending on which water trap 37 or 51 will be tested and how, disconnecting taps 26, 27, 32 and 33 open or close.

If a dehumidifier 51 of the pressure regulator 50 is to be tested without the contaminated chamber 29 being turned on, the taps 26, 33, 60, 48, 49 and 32 are closed. Crane 37 is opened. Compressed air is supplied to the input of controller 50 and into the cavity 59 of the spool valve 58. At this drain line 55, it is locked by the device of the controller 50 itself. Compressed air passes through the dehumidifier 51 and, pressing the check valve 61, enters the receiver 9, where monitored by instruments 21-24. The capacity of the separator is estimated by the differential pressure at the ends of the tubular water pressure gauge 6 I „

When the regulator 50 is triggered at the upper limit of the working pressure, the drain line 53 opens. Compressed air is vented to the atmosphere and at the same time the pressure drops in the cavity 59 of the distributor, which aligns the spool bore 57 with the line 55. Congested in the water drain

The manipulations with the opening and closing of the taps 6, 12, II and 27. Then the taps 26 and 32 are opened. At the same time, the taps 33 and 48 are closed. Pre-fill chamber 29 with a contaminant. Compressed air, passage through the cavity - 28, captures the particles of the contaminant, carrying them at high speed through the nozzle 30. Then through the cavity 31

The contaminated air enters the inlet of the pressure regulator 50. The dehumidifier 51 clogs the air, thereby creating a certain pressure drop in the pressure gauge 61. By collecting the condensate in the measuring tank 54 again in an analogous way and weighing it, the degree of purification of compressed air at a given humidity and pollution of compressed air is determined.

Then, source 1 is turned on again and valve 60 is opened. Compressed air under high pressure passes through cavities 53 and 52 of the moisture separator 51 to the atmosphere through the window 56, counting the moisture separator. For testing the moisture separator 37, the taps 27 and 32 are closed and the crane 33 is opened.

Depending on the nature of the tests, the crane 26 is opened, or the contaminant does not fall asleep into the cavity 28 of the chamber 29 o Next, select the required number of rings in blocks 35 and 36 and adjust the logical electronic device 47 on

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The specific frequency of operation of the solenoid valve is determined depending on the operation of the particular regulator in which the 37 ° moisture separator is to be installed. At the same time, the taps 48 and 49 are closed. Then, manipulations are repeated with cranes 6, 11 and 12, line 2 and include source 1.

Similar measurements are made as in the test of water separator 51 of controller 50 through instrument readings 7, 21-25 and 40. This ensures that the dehumidifier 37 is periodically blown through the spool opening 42 43 The quality of this purge is evaluated by the instrument readings, the final purge of the separator 37 is performed with the source 1 turned off and the valve 48 is open. In all the cases described, the cyclical operation of the device is measured by counters 62 It is also possible to jointly test the separators 37 and 51,

At the end of the test, turn off the source 1, the device 47 and open the valve 49, release compressed air from the system

Claims (1)

1. A device for testing moisture separators of pneumatic brake systems pressure regulators of vehicles, containing a source of compressed air inlet connection connected to an atmospheric air source with a high humidity, and an exhaust air line to a receiver through a test moisture separator and capacity for collecting condensate, communicated by a discharge line with a condensate discharge hole of the pressure regulator under test, with a distributor installed on the condensate discharge line, a distributor valve associated with the pneumatic cylinder current for selective communication of the condensate discharge port with the tank for its collection and the atmosphere without Q 0 five 0 Q five The cavity of which is communicated with the input of the pressure regulator j, characterized in that, with the aim of versatility and quality of work, it is equipped with an additional receiver, a dehumidifier unit with an adjustable degree of compressed air drying, a contaminant and test chamber, an electromagnet and an additional spool distributor, the air inlet line of the compressed air source is made of high humidity detachable from the source of atmospheric air, the air outlet line is connected to the main to the receiver via an additional receiver, which is selectively communicated in turn with the outlet air line directly or through a dryer unit, the input of the pressure regulator under test selectively communicating with the additional receiver and the contamination chamber, which is also selectively communicating with the test chamber, made in the form of a set of removable left and right transparent hermetic rings, between which the installation site of the additional test moisture separator is located, the entrance cavity of which through the additional spool valve is selectively communicated with the atmosphere or locked depending on the operation of the solenoid valve communicated with the input to the main receiver, and the output with the rodless cavity of the additional spool valve, 2, The device according to claim 1, characterized in that the additional and main receivers are equipped with devices for controlling the temperature and humidity of compressed air, the inlets and outlets of the tested moisture separators are communicated with the instruments for controlling the pressure drop, and the output of the Main tested moisture separator is communicated directly to the main receiver pressure regulating valve „