RU143026U1 - DEVICE FOR PRODUCING PURIFIED AND DRIED COMPRESSED AIR ON VEHICLE - Google Patents

Abstract

A device for producing purified and dried compressed air on a vehicle, comprising a compressor with a drive, a discharge line installed in the discharge line, a heat exchanger cooler, an adsorber with a drain valve, check valves, in parallel with which a purge air pipe with a throttle placed on it is connected to the discharge line and a control valve connected by a control line to the discharge line, an air collector and a compressor pressure regulator associated with the compressor and important valve, the compressor pressure regulator is installed on the control valve control line, its input is connected to the discharge line, and the output is connected to the control valve control line, the purge air pipe is connected to the output of the compressor pressure regulator and is equipped with a check valve, characterized in that it additionally introduced an electronic unit, a separator-water separator with an automatic condensate drain and a water-oil separator, which are connected to each other, a coarse filter, which is installed flax between the separator, the water separator and the first non-return valve, a general cleaning filter that is installed after the second non-return valve on the outlet line from the adsorber, the first electrically operated valve is installed on the first bypass outlet behind the throttle, the second bypass outlet is made on the connection line between the adsorber and the air collector behind the first bypass outlet on which the second electrically controlled valve and a fine filter are located, and all electrically controlled valves are connected to the electronic time control unit

Description

The utility model relates to railway transport, and in particular to the field of supply and preparation of vehicle brakes with compressed air.

A device for producing compressed dried air in a vehicle is known, comprising a compressor with a drive, a discharge line, a special heat exchanger (compressed air cooler), an adsorber with a drain valve and with an actuator for the drain valve, and non-return valves connected in parallel to purge air line purge air pipe with a throttle and a control valve placed on it, connected by a control line to a discharge line, a suction cup and compressor pressure regulator connected to the compressor and through an electro-pneumatic valve acting as an actuator of the drain valve, with a drain valve, a second pressure regulator installed on the control valve control line that controls the adsorber purge, starting with the “purge start pressure” (RU, patent No. 2062905, IPC: F04B 41/02, published on June 27, 1996, BI No. 18, authors: Arbuzov Yu.N. et al. “Device for producing compressed, dried air in a vehicle”).

A disadvantage of the known device is the significant low degree of drying of compressed air on the vehicle, in view of the dependence of the air flow on regeneration on the duration of the compressor. With technically justified average air flow rates for regeneration and short turn-on durations, this leads to overrun of purge air, and with long turn-on durations, the air flow for regeneration is insufficient, which leads to an increase in moisture passage. The disadvantage is also sharp pressure drops, leading to large alternating air velocities between the adsorbent particles at the beginning of each adsorption and regeneration half-cycle, as a result of which there is an increase in adsorbent wear, part of the moist air passes through the adsorbent layer at high speed during the change of the adsorbent purge regime with reduced air ( regeneration) to the drying mode, picking up dust, wear products of the adsorbent, oil particles and moisture into the brake line.

A device is known for producing purified and dried compressed air in a vehicle, comprising a compressor with a drive, a discharge pipe, a refrigerator for compressed air, an adsorber with a drain valve and an actuator for a drain valve, and a check valve connected in parallel to the discharge line on a discharge line the purge air pipeline with a throttle placed on it, the air collector and the compressor pressure regulator associated with the compressor are equipped with the electronic control device for the adsorbent purge time, the inlet of which is connected to the compressor pressure regulator and the outlet to the actuator of the drain valve, to ensure that the amount of air going to the regeneration of the adsorbent and the dried compressed air for the compressor discharge cycle matches, and is equipped with an additional non-return valve installed directly in front of the adsorber to slowly fill the adsorber through the throttle with compressed air after blowing the adsorbent with reduced air ear and create a compressed air cleaning mode, and is further provided with a crane on the conduit of scavenging air to the air supply line to the adsorber via a throttle (RU, patent №2179263, IPC: F04B 41/02, B60T 11/10, publ. 02/10/2002, BI No. 4, authors: A. Redin and others. "Device for producing purified and dried compressed air on a vehicle").

A disadvantage of the known device is the insufficient degree of purification and drying of compressed air.

This device is selected by the author as a prototype.

The technical result is to increase the degree of purification and drying of compressed air.

The technical result is achieved by the fact that in a device for producing cleaned and dried compressed air on a vehicle containing a compressor with a drive, a discharge line is installed on the discharge line, a heat exchanger is a cooler, an adsorber with a drain valve, check valves are connected in parallel to the discharge line purge air with a throttle and control valve located on it, connected by a control line to a discharge line, an air collector and a pressure regulator compressor connected to the compressor and the drain valve, the compressor pressure regulator is installed on the control line of the control valve, its input is connected to the discharge line, and the output is connected to the control line of the control valve, the purge air pipe is connected to the output of the compressor pressure regulator and is equipped with a check valve, additionally introduced an electronic unit, a separator-water separator with an automatic condensate drain and a water-oil separator, which are connected to each other, a coarse filter , which is installed between the separator, the water separator and the first non-return valve, the general cleaning filter, which is installed after the second non-return valve on the outlet line from the adsorber, has the first electrically operated valve installed on the first bypass outlet after the throttle, the second bypass outlet is made on the connection line between the adsorber and the air collector a bypass outlet, on which a second electrically controlled valve and a fine filter are located, wherein all electrically controlled valves are connected to the electronic control unit I eventually purge the adsorbent, which in turn is connected to the compressor pressure regulator.

The use of a dehumidifier and coarse, general and fine filters in the separator device in the process control will increase the degree of purification and drying of compressed air.

In FIG. shows a block diagram of the proposed device.

The device comprises a compressor 1 with a drive, a discharge pipe 2, a heat exchanger cooler 3, a separator, a moisture separator 4, automatic steam traps 5, an oil-water separator 6, a coarse filter 7, a first non-return valve 8 installed directly in front of the adsorber 9 with an automatic steam trap 5, and a second non-return valve 10 parallel to which the first bypass purge air outlet 11 is connected to the discharge line with a throttle 12 and an electrically controlled valve 13 placed on it, the general cleaning filter and 14, a second bypass outlet 15 with an electrically controlled valve 16 and a fine filter 17 disposed thereon, an electrically controlled valve 21, an air collector 18, a pressure regulator 19 with a compressor and an electronic control unit 20.

The device operates as follows.

Atmospheric air is drawn in by compressor 1 and pumped through pipe 2 to cooler-heat exchanger 3 and fed to the separator moisture separator 4, where partial cooling of the air and separation of some moisture and oil occurs due to changes in flow and condensation rates, then compressed air passes through the coarse filter where solid particles are removed, and the condensate from the separator of the water separator 4 flows through an automatic steam trap 5 to the oil-water separator 6. Through the check valve 8, compressed air x enters the adsorber 9, where it enters the adsorbent layer. Air passing through the adsorbent inside the dryer gives off moisture, which through the automatic steam trap 5 enters the oil-water separator 6. From the adsorber 9, compressed air through the check valve 10 enters the general filter 14, where the compressed air is cleaned of dust and wear products adsorbent, oil particles and non-adsorbed moisture. After the general filter, compressed air through the electrically operated valve 21 enters the air collector 18. If the requirements for air purity are especially stringent, after the adsorption filter 14, when the electrically operated valve 21 is closed and the electrically operated valve 16 is open, compressed air enters the fine filter 17 through the bypass outlet and further into the air collector 18. When the air pressure collector 18 reaches the upper set pressure limit, the air pressure regulator 19 behind the compressor is activated and sends a signal to the means Euodias (Fig. not shown) of the compressor 1 in operation at idling or driving off (Fig. not shown) of the compressor depending on the method of regulation of the compressor, wherein the compressor 1 and operates in the idle mode or stops. The supply of compressed air to the pipe 2 is interrupted. At the same time, a signal is supplied to the electronic control unit 20 for the adsorbent purge time, which, by applying a signal to the electrically operated valve 13, opens it. There is a release of air pressure, as well as dust trapped in the adsorber 9, wear products of the adsorbent, oil particles and non-adsorbed moisture. After depressurization, the adsorbent is purged (regenerated) with dry air, reduced in the choke 12 through the line air collector 18, the purge air pipe 11, the choke 12, the electrically operated valve 13, the adsorber 9, the automatic steam trap 5. Previously trapped water vapor is removed from the adsorbent located in the adsorber 9 , the adsorbent restores its absorbing properties.

After a time proportional to the operating time of the compressor 1 or the amount of air supplied for the discharge cycle, determined by the adsorbent purge time electronic control unit 20, or when the lower pressure limit is reached in the air collector 18, thereby maintaining the correspondence of the amount of air going to the adsorbent regeneration, and dried compressed air for the compressor discharge cycle 1, as well as creating the prerequisites for the compressed air purification mode. After the adsorbent is purged with reduced air (regeneration), compressed air through the purge air pipe 11 slowly fills the adsorber 9 through the throttle 12 with compressed air equalizing the pressure in the adsorber 9 and air collector 18, thereby preventing excessive wear of the adsorbent from high alternating speeds, reducing dust passage , wear products of the adsorbent, particles of oil and moisture at the time the compressor 1 starts operating in the discharge mode. When the air pressure in the air collector 18 decreases to the lower set limit, the compressor pressure regulator 19 is activated and sends a signal to turn off the transfer means (not shown in Fig.) Of the compressor 1 to idle mode or to turn on the compressor drive 1. Compressor 1 starts to run discharge mode. Since the adsorber 9 was pre-filled with compressed air from the air collector 18, the drying mode starts immediately from the optimum compressed air speeds, trapping dust, wear products of the adsorbent, oil particles and droplet moisture in the stagnant zones between the adsorbent granules. This creates an optimal mode of cleaning compressed air.

An electrically operated valve 13 installed on the purge air pipe 11 on the air supply line to the adsorber 9 through the throttle 12 serves to shut off the purge air pipe 11 during the check of the pneumatic system for leaks and can be installed both before and after the throttle 12.

The proposed device for producing purified and dried compressed air in a vehicle allows to increase the degree of purification and drying of compressed air by 10-15%, to increase its reliability and efficiency.

Claims (1)

A device for producing purified and dried compressed air on a vehicle, comprising a compressor with a drive, a discharge line installed in the discharge line, a heat exchanger cooler, an adsorber with a drain valve, check valves, in parallel with which a purge air pipe with a throttle placed on it is connected to the discharge line and a control valve connected by a control line to the discharge line, an air collector and a compressor pressure regulator associated with the compressor and important valve, the compressor pressure regulator is installed on the control valve control line, its input is connected to the discharge line, and the output is connected to the control valve control line, the purge air pipe is connected to the output of the compressor pressure regulator and is equipped with a check valve, characterized in that it additionally introduced an electronic unit, a separator-water separator with an automatic condensate drain and a water-oil separator, which are connected to each other, a coarse filter, which is installed flax between the separator, the water separator and the first non-return valve, a general cleaning filter that is installed after the second non-return valve on the outlet line from the adsorber, the first electrically operated valve is installed on the first bypass outlet behind the throttle, the second bypass outlet is made on the connection line between the adsorber and the air collector behind the first bypass outlet on which the second electrically controlled valve and a fine filter are located, and all electrically controlled valves are connected to the electronic time control unit vki adsorbent, which, in turn, is connected to a compressor pressure regulator.