CN213843863U - Energy-saving device of air compressor system - Google Patents

Abstract

The utility model discloses an economizer of air compressor machine system, include: the coils of the first relays are respectively connected with the PLC, and the normally open contacts of the first relays are connected in series; one end of a coil of the second relay is electrically connected with a normally open contact of the first relay at the rear end of the series connection; one end of a coil of the third relay is connected with the normally closed contact of the second relay; one end of a coil of the contactor is electrically connected with a normally open contact of the third relay; when the PLC acquires that the air consumption of the air flow meter in the production area is zero, the nitrogen flow at the outlet of the nitrogen making machine is zero and the on-board fling-cut switch is in an automatic switching state, the PLC closes the first relays. The utility model discloses increase relay control back, the effectual compressor that has reduced opens the number of times that stops, reduced the unnecessary displacement moreover, reduced the running cost.

Description

Energy-saving device of air compressor system

Technical Field

The utility model relates to an air compression technical field. More specifically, the utility model relates to an economizer of air compressor machine system.

Background

The existing compressed air system comprises a compressor, a refrigeration dryer, a suction dryer, a filter, an air storage tank and the like, wherein the compressor sends compressed air into the refrigeration dryer for heat exchange cooling to 2-10 ℃, condensed water is discharged from a timing residue discharge valve by utilizing gas pressure discharge devices, the compressed air dried by the refrigeration dryer is sent into the suction dryer again, the suction dryer consists of two towers, one tower is used for adsorption, the other tower is used for regeneration and parallel operation, in the adsorption state, an adsorbent absorbs moisture in the flowing compressed air to achieve a drying effect, when a certain adsorption time is reached, the regeneration state is automatically switched, the gas dried in the tower is expanded and decompressed to atmospheric pressure to remove the moisture in a drying agent, and the adsorbent is activated again, so that the compressed air is recycled.

In the process of compressing air, the compressor is automatically supplemented with pressure after being started, when the outlet pressure of the compressor reaches 0.8MPa, the compressor enters a dormant state, the pressure is lower than that of the compressor which is automatically started at 0.8PMa, the residue discharge valve is opened in a timing control mode, and even if the system is in a non-air-use state, the pressure of the system is reduced after the residue discharge valve is opened in a timing mode, so that the compressor is repeatedly started, and the energy consumption is increased. The dryer is also time controlled to cycle after starting, and a large amount of air is consumed in a regeneration state under the condition that no air is used by a user.

SUMMERY OF THE UTILITY MODEL

It is an object of the present invention to solve at least the above problems and to provide at least the advantages which will be described later.

The utility model discloses still another purpose provides an economizer of air compressor machine system, increases relay control back, and the effectual compressor that has reduced opens the number of times that stops, has reduced the unnecessary displacement moreover, has reduced the running cost.

In order to achieve these objects and other advantages in accordance with the present invention, there is provided an energy saving device of an air compressor system, comprising: the coils of the first relays are respectively connected with the PLC, normally open contacts of the first relays are connected in series, and the normally open contact of the first relay positioned at the front end of the series connection is connected with the positive electrode of the 24V power supply;

one end of a coil of the second relay is electrically connected with a normally open contact of the first relay at the rear end of the series connection, the other end of the coil of the second relay is connected with the negative electrode of the 24V power supply, the normally closed contact of the second relay is electrically connected with a manual switch of the cold dryer, and the manual switch of the cold dryer is connected with the positive electrode of the 24V power supply;

one end of a coil of the third relay is connected with the normally closed contact of the second relay, the other end of the coil of the third relay is connected with the negative electrode of a 24V power supply, and the normally open contact of the third relay is connected with a 220V live wire;

one end of a coil of the contactor is electrically connected with a normally open contact of the third relay, the other end of the coil of the contactor is connected with a zero line, a group of 220v working power supplies are provided for the contactor, and the normally open contact of the contactor is electrically connected with power supplies of a cold drying machine, a suction drying machine and a residue discharge valve;

when the PLC acquires that the air consumption of the air flow meter in the production area is zero, the PLC closes one of the first relays;

when the flow of nitrogen at the outlet of the nitrogen making machine is zero, the PLC closes another first relay;

and when the PLC acquires that the on-switch on the control cabinet is in an automatic switching-in state, the PLC closes the other first relay.

The utility model discloses at least, include following beneficial effect: after the relay control is added, the number of times of starting and stopping the compressor is effectively reduced, unnecessary air displacement is reduced, and the operation cost is reduced.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic diagram of a relay arrangement structure of an energy saving device according to one of the technical solutions of the present invention.

Detailed Description

The present invention is further described in detail below with reference to the drawings so that those skilled in the art can implement the invention with reference to the description.

It should be noted that, in the description of the present invention, the terms "front end", "rear end", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

As shown in fig. 1, the utility model provides an economizer of air compressor machine system, include: the coils of the first relays are respectively connected with the PLC, normally open contacts of the first relays are connected in series, and the normally open contact of the first relay positioned at the front end of the series connection is connected with the positive electrode of the 24V power supply;

one end of a coil of the second relay is electrically connected with a normally open contact of the first relay at the rear end of the series connection, the other end of the coil of the second relay is connected with the negative electrode of the 24V power supply, the normally closed contact of the second relay is electrically connected with a manual switch 1 of the cold drying machine, and the manual switch 1 of the cold drying machine is connected with the positive electrode of the 24V power supply;

one end of a coil of the third relay is connected with the normally closed contact of the second relay, the other end of the coil of the third relay is connected with the negative electrode of a 24V power supply, and the normally open contact of the third relay is connected with a 220V live wire;

one end of a coil of the contactor is electrically connected with a normally open contact of the third relay, the other end of the coil of the contactor is connected with a zero line, a group of 220v working power supplies are provided for the contactor, and the normally open contact of the contactor is electrically connected with power supplies of a cold drying machine, a suction drying machine and a residue discharge valve;

when the PLC acquires that the air consumption of the air flow meter in the production area is zero, the PLC closes one of the first relays;

when the flow of nitrogen at the outlet of the nitrogen making machine is zero, the PLC closes another first relay;

and when the PLC acquires that the on-switch on the control cabinet is in an automatic switching-in state, the PLC closes the other first relay.

In the technical scheme, the air compression system mainly supplies air to the instrument and the nitrogen making device, and whether the air is used or not can be judged by acquiring the air flow and the outlet flow of the nitrogen making machine. When the air consumption is zero, the cold drying machine, the suction drying machine and the residue discharge valve are stopped, at the moment, the air pressure in the pipeline and the storage tank is kept unchanged, and the air compressor is in a dormant state; and when the gas consumption is not zero, starting the cold drying machine, the suction drying machine and the residue discharge valve.

When the air flow of the air flow meter obtained by the PLC controller is zero, the nitrogen flow at the outlet of the nitrogen making machine is zero, and the on-board switching switch is in an automatic switching state, the PLC controller outputs signals to the corresponding first relay coils, the related first relay coils are powered on and then close normally open contacts, the normally open contacts of the first relays are connected in series and communicated, when the three conditions are met, the normally open contacts of the first relays, the 24V power supply and the coils of the second relays are communicated, the second relay coil is powered on, the normally closed contact of the second relay is disconnected, the cold dryer, the suction dryer and the residual valve cannot be connected, and the cold dryer, the suction dryer and the residual valve cannot be disconnected, so that the work of the cold dryer, the suction dryer and the residual valve is suspended.

When the PLC controller obtains that the air flow of an air flow meter is zero, the nitrogen flow at the outlet of a nitrogen making machine is zero, a switching switch on a control cabinet is in an automatic switching state, and one of the three conditions is not satisfied, the normally open contacts of a plurality of first relays, a 24V power supply and coils of a second relay cannot be communicated, the normally closed contact of the second relay cannot be opened, the normally closed contact of the second relay, a control cabinet starting switch and a third relay coil are connected in series, the normally open contact of the third relay can be controlled to be in a closed state by controlling the third relay coil to be powered on and powered off through the control cabinet starting switch, when the control cabinet starting switch is closed, the third relay coil is powered on, the normally open contact of the third relay is closed, at the moment, the 220V power supply, the contactor coil and the normally open contact of the third relay are communicated, so that the normally open coil of the contactor is powered on and the normally open contact of the contactor is closed, at the moment, the power supplies of the cold drying machine and the residue discharge valve are in a communicated state, and the cold drying machine and the residue discharge valve are in a working state.

While the embodiments of the invention have been described above, it is not intended to be limited to the details shown, or described, but rather to cover all modifications, which would come within the scope of the appended claims, and all changes which come within the meaning and range of equivalency of the art are therefore intended to be embraced therein.

Claims (1)

1. The utility model provides an economizer of air compressor machine system which characterized in that includes: the coils of the first relays are respectively connected with the PLC, normally open contacts of the first relays are connected in series, and the normally open contact of the first relay positioned at the front end of the series connection is connected with the positive electrode of the 24V power supply;

one end of a coil of the second relay is electrically connected with a normally open contact of the first relay at the rear end of the series connection, the other end of the coil of the second relay is connected with the negative electrode of the 24V power supply, the normally closed contact of the second relay is electrically connected with a manual switch (1) of the cold dryer, and the manual switch (1) of the cold dryer is connected with the positive electrode of the 24V power supply;

one end of a coil of the third relay is connected with the normally closed contact of the second relay, the other end of the coil of the third relay is connected with the negative electrode of a 24V power supply, and the normally open contact of the third relay is connected with a 220V live wire;

one end of a coil of the contactor is electrically connected with a normally open contact of the third relay, the other end of the coil of the contactor is connected with a zero line, a group of 220v working power supplies are provided for the contactor, and the normally open contact of the contactor is electrically connected with power supplies of a cold drying machine, a suction drying machine and a residue discharge valve;

when the PLC acquires that the air consumption of the air flow meter in the production area is zero, the PLC closes one of the first relays;

when the flow of nitrogen at the outlet of the nitrogen making machine is zero, the PLC closes another first relay;

and when the PLC acquires that the on-switch on the control cabinet is in an automatic switching-in state, the PLC closes the other first relay.

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