CN202338469U - Control device for water cooling and circulating pump of air compressor - Google Patents

Abstract

The utility model relates to a control device for a water cooling and circulating pump of an air compressor. The control device comprises a power supply circuit and a first pump working circuit and a second pump working circuit which are connected with the power supply circuit; pressure sensors are arranged in both a first pump and a second pump; the pressure sensors are connected with a pressure switch; the pressure switch is in series connection with an intermediate relay; normally-open contacts of the intermediate relay are serially connected into the first pump working circuit and the second pump working circuit respectively; and the first pump working circuit and the second pump working circuit are respectively provided with change-over switches. With the adoption of the technical scheme, the control device for the water cooling and circulating pump of the air compressor has the advantages of sensitiveness in response, less outside influence and reliability in operation; and the other standby water pump can be immediately started up regardless of the damage to one water cooling pump, motors or other components, the air compressor is guaranteed not to be in shutdown due to the problems of a cooling system, and the water cooling pump can be accurately controlled in an automatic or manual state, so that the normal production is guaranteed.

Description

Air compressor cool cycles pump control unit

Technical field

The utility model relates to a kind of electric control equipment of air compressor cool cycles water pump.

Background technique

As shown in Figure 1, the centrifugal air compressor of power station (TX-A) cooling water is by the water pump circulation-supplied of two 15KW, opens one and is equipped with one, manually control.The problem and shortage that exists: 1, such problem appearred in run duration: operating cooling waterpump motor coil burns out; And another cooling waterpump can not start automatically; Can not satisfy the requirement of air compressor cooling system; Finally cause air compressor to be shut down because of motor temperature is too high, thereby cause the compressed air pressure fluctuation, influence is produced.2, when water pump of operation can not satisfy air compressor to the requiring of cooling water pressure, can cause air compressor to shut down.

Summary of the invention

The purpose of the utility model provides a kind of air compressor cool cycles pump control unit, it a water pump is stopped or the pressure of air compressor cooling water when not enough another water pump start automatically.

For realizing above-mentioned purpose, the utility model adopts following technological scheme:

The utility model comprises power circuit and a pump work loop and No. two pump work loops of being connected with power circuit; In a pump and No. two pumps, pressure transducer is set all; Pressure transducer is connected with pressure switch; Described pressure switch and auxiliary reclay are connected in series, and the normally opened contact of auxiliary reclay is connected on respectively in pump work loop and No. two pump work loops, and also are respectively equipped with throw over switch in a pump work loop and No. two pump work loops.

Adopt the utility model of technique scheme, be quick on the draw, receive ectocine less, reliable.No matter cooling waterpump, motor still is other component wear, and another reserve pump all can start immediately, and the assurance air compressor can not shut down because of the cooling system problem, and under the automatic or manual state, can both control accurately cooling waterpump, thereby guarantees ordinary production.

Description of drawings

Fig. 1 is the control principle figure of existing technology.

Fig. 2 is the control principle figure of the utility model.

Embodiment

As shown in Figure 2, the utility model comprises power circuit and a pump work loop and No. two pump work loops of being connected with power circuit.And in a pump and No. two pumps, pressure transducer is set all, pressure transducer is connected with pressure switch S, and described pressure switch S and auxiliary reclay 1KA are connected in series; The normally opened contact 1KA-1 of auxiliary reclay; 1KA-2 is connected on respectively in pump work loop and No. two pump work loops, and also is respectively equipped with throw over switch in a pump work loop and No. two pump work loops, in Fig. 2, is respectively 1; 2 contacts and 3,4 contacts.

The working principle of the utility model is: utilize the contact on the pressure switch S to realize the control to two cooling waterpumps.Cross when low to hydraulic pressure when pressure sensor monitoring, send a signal to pressure switch, pressure switch S conducting starts reserve pump automatically to keep the air compressor cooling water pressure.After the transformation, (a) utilize throw over switch to realize the self-starting of two water pumps.When (b) moving two water pumps if desired simultaneously, make automatic change-over to halted state, manually boot water pump.(c) pump operation, No. two pumps are thrown automatically; No. two pump operations, a pump are thrown automatically.Make automatic change-over to position of rest when (d) overhauling.

Claims (1)

1. air compressor cool cycles pump control unit; It comprises power circuit and a pump work loop and No. two pump work loops of being connected with power circuit; It is characterized in that: in a pump and No. two pumps, pressure transducer is set all; Pressure transducer is connected with pressure switch (S), and described pressure switch (S) is connected in series the normally opened contact (1KA-1 of auxiliary reclay with auxiliary reclay (1KA); 1KA-2) be connected on respectively in pump work loop and No. two pump work loops, and also be respectively equipped with throw over switch in a pump work loop and No. two pump work loops.

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