RU2016793C1 - Transport compressor plant - Google Patents

Abstract

FIELD: mechanical engineering. SUBSTANCE: when compressor 1 is stopped adsorber 9 communicates not with the atmosphere but with reservoir 26 connected at the outlet of adsorber 9 by a waste air manifold. After reservoir 26 is filled time relay 27 through contacts 17 initiates blowing valve 19 through which the air remained in adsorber 9 is bled to the atmosphere and the adsorbent is regenerated by a dry air part of which is taken from air intake 12 and the remained air - from reservoir 26 of waste air manifold. EFFECT: improved structure. 1 dwg

Description

 The invention relates to railway transport and relates to compressor units producing dry compressed air for pneumatic lines of locomotives.

 A transport compressor installation is known, comprising a compressor with a drive motor controlled by a pressure switch, an adsorber with a purge valve, a check valve controlled by an electromagnetic valve, a check valve, a dry air line with an air collector connected in series to the compressor. In parallel with the dry air line to the non-return valve, an adsorbent regeneration line is connected, which includes a storage tank for regeneration air.

 The disadvantage of the installation is reduced efficiency due to unproductive discharge into the atmosphere of the pipeline section from the compressor to the non-return valve.

 The closest technical solution, selected as a prototype, is a transport compressor installation containing a compressor with a drive motor controlled by a pressure switch, having closing and opening contacts, a heat exchanger, a separator, an adsorber with a purge valve controlled by an electromagnetic valve connected in series to the compressor, a non-return valve , parallel to which the adsorber purge line with a throttle, the dry air line with an air collector are connected.

 The disadvantage of this installation is the need to remove air into the atmosphere from the line section from the compressor to the dry air line check valve. After that, the adsorber begins to regenerate in the adsorber. Unproductive air consumption by the installation worsens its economic performance.

 The purpose of the invention is to increase the efficiency of the installation.

 This goal is achieved by the fact that the transport compressor installation comprising a compressor with a drive motor controlled by a pressure switch having closing and opening contacts, a heat exchanger connected in series to the compressor, an adsorber with a purge valve controlled by an electromagnetic valve, a non-return valve in parallel with which the adsorber purge line is connected with throttle, dry air line with air collector, equipped with a valve installed in the adsorber purge and control line a solenoid valve connected in parallel to the dry air line with a waste air line, which includes a non-return valve with a throttle connected in parallel to it, a shut-off valve controlled by an electromagnetic valve, a tank, a time relay, including a coil and make contacts. A time relay and a valve coil of the shut-off valve are connected to the closing contact of the pressure switch, and to the closing contact of the time relay-coil of the purge valve valves and the valve located in the purge and adsorber lines.

 Comparison of the claimed solution not only with the prototype, but also with other technical solutions in this technical field did not allow identifying ghosts in them that distinguish the claimed solution from the prototype, which allows us to conclude that the criterion of "significant differences" is met.

 In the proposed installation, at the moment the compressor stops, air from the section of the line between the shut-off valve and the non-return valve flows along the waste air line into a special tank. After the tank filling time has elapsed, the time relay is activated by opening the purge valve, the remaining air is removed from the adsorber and the adsorbent regenerates air from the air collector and from the tank. The use of waste air improves the efficiency of drying compressed air.

 The drawing shows a schematic diagram of a transport compressor installation.

 The installation comprises a compressor 1 with a drive motor 2, controlled by a pressure switch 3, having opening 4 and closing contacts 5, mounted in series to compressor 1, a heat exchanger 6, a shut-off valve 7 controlled by an electromagnetic valve 8, the coil of which is connected to the closing contacts 5 of the pressure switch 3. Further an adsorber 9, a return clanap 10, a dry air line 11 and an air collector 12 are installed in the line; Parallel to the check valve 10, an adsorber purge line 13 with a throttle 14 and a valve 15 is connected solenoid valve 16. The valve 16 is connected through the make contact 17 of the time relay 18 to the make contacts 5 of the pressure switch 3. At the bottom of the adsorber 9, an adsorber purge valve 19 is installed, the valve coil 20 of which is connected to the make contact 17 of the time relay 18. At the output from the adsorber 9 parallel to the dry line 11 is connected a waste air line 21 including a check valve 22 with a throttle 23 parallel to it, a shut-off valve 24 controlled by an electromagnetic valve 25, and a reservoir 26. The valve coil 25 By connecting to the closing pressure switch contact 5 3, connected to the same terminal and the coil 27 of time relay 18. The drive motor receives control power from source 28 through button 29.

 Installation works as follows.

 Pressing the button 29 turns on the drive motor 2, starts the compressor 1 and the compressed air through the heat exchanger 6 and the open shut-off valve 7 enters the adsorber 9, is dried in the adsorbent layer and is directed through the non-return valve 10 to the dry air line 11, air collector 12 and then to the consumer. When the maximum working pressure is reached in line 11, pressure switch 3 is activated, its contacts 4 open and contacts 5 are closed. Compressor 1 stops, the coil 27 of the time relay 18 and the valve coil 8 of the shut-off valve 7 are received, which closes and disconnects the heat exchanger 6 with the adsorber 9 At the same time, the coil of the valve 25 of the shut-off valve 24 is supplied with power, it opens and the compressed air from the adsorber 9 through the check valve 23 enters the reservoir 26 and fills it to equilibrium pressure. Valve 15 is closed at this time. After some set time, the time relay 18 is activated, the contacts 17 are closed and the valve coil 16 of the valve 15, which closes, and the valve coil 20 of the purge valve 19, which opens, receive power. When the purge valve 19 is opened, air from the adsorber 9 is vented to the atmosphere and it begins the process of adsorption of the adsorbent, which continues during the compressor standstill. Regenerative air enters the adsorber from two lines: from the purge line 13 through the valve 15 and the throttle 14 from the waste air line 21 from the tank 26 through the shutoff valve 24 and the throttle 23. This air regenerates the adsorbent and is removed into the atmosphere through the open purge valve 19. By selecting the volume of the tank 26 and the cross sections of the chokes 14 and 23, the required degree of regeneration of the adsorbent is achieved, and therefore the degree of drying of the compressed air. When air pressure 11 decreases to the minimum operating value, pressure switch 3 activates, its contacts 5 close, shut-off valve 7 opens, shut-off valve 24 closes, time relay 18 turns off, its contacts 17 open, valve 15 opens, and purge valve 19 closes , compressor 1 is turned on, and the installation cycle is repeated.

 The technical and economic efficiency of the invention consists in increasing the efficiency of the installation by reducing the amount of air discharged into the atmosphere from the adsorber before starting the adsorbent regeneration process in it. This is achieved by the fact that when the compressor is stopped, the adsorber is not in communication with the atmosphere, but with a special reservoir connected to the exhaust air line at the outlet of the adsorber. After filling the tank, the timer switches on the purge valve, through which the remaining air in the adsorber is discharged into the atmosphere and regeneration of the adsorbent with dry air begins, part of which is taken from the air collector, and the rest from the waste air tank.

Claims (1)

 TRANSPORT COMPRESSOR INSTALLATION, comprising a compressor with a drive motor controlled by a pressure switch, having make and break contacts connected in series to the compressor, a heat exchanger, an adsorber with a purge valve controlled by an electromagnetic valve, a non-return valve in parallel with which an adsorber purge line with a throttle is connected, a dry air line with an air collector, characterized in that it is equipped with a valve installed in the adsorber purge line and controlled by an electric an electromagnetic valve connected in parallel to the dry air line with a waste air line including a non-return valve with a throttle connected in parallel to it, a shut-off valve controlled by an electromagnetic valve, and a tank, a time relay, including a coil and make contacts, and to the make contact of the relay the pressure switch is connected to a time relay and a valve coil of a shut-off valve, and the solenoid valve coils of a purge valve and a valve located in the main adsorber blower.