CN206419250U - A kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption - Google Patents

Abstract

The utility model discloses a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption, it is characterized in that：Including frequency converter and two cooling blowers, the cooling blower includes 1# main air blowers and 2# standby fans, the control system also includes energy consumption statistic module, the energy consumption statistic module includes three-phase voltameter, the three-phase voltameter accesses the end of incoming cables of major loop, the control system can realize multiparty control, be manually booted the switching with automatic start.The utility model is capable of the energy consumption of real-time monitoring system, beneficial to energy-conservation.

Description

A kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption

Technical field

The utility model is related to central air-conditioning blower fan of cooling tower control system technical field, and specifically a kind of monitoring is real When energy consumption central air-conditioning blower fan of cooling tower one drag two control system.

Background technology

In order to possess more comfortable indoor environment, central air-conditioning has become indispensable in people's work and life Electrical equipment, but the use of air-conditioning is quite serious to the consumption of the energy, not to each portion of air-conditioning in existing air conditioner Part carries out the module of energy consumption statistic, it is impossible to accurately understand the energy consumption of each part inside air conditioner in detail, so as to carry out Can not targetedly research direction during energy-saving design.

Utility model content

To overcome the shortcomings of that above-mentioned prior art is present, the purpose of this utility model is to provide a kind of monitoring real time energy consumption Central air-conditioning blower fan of cooling tower one drag two control system, can control and detect in real time energy consumption, reach the purpose of energy-conservation.

The utility model solves the technical scheme that its technical problem used：A kind of central air-conditioning for monitoring real time energy consumption Blower fan of cooling tower one drag two control system, it is characterized in that：Including frequency converter and two cooling blowers, the cooling blower includes 1# Main air blower and 2# standby fans, the control system also include energy consumption statistic module, and the energy consumption statistic module includes three-phase electricity Scale, the three-phase voltameter accesses the end of incoming cables of major loop, and one end of the frequency converter passes through circuit breaker Q F2 connection three-phase electricities Source, the 1# main air blowers pass sequentially through electrothermal relay KH1, contactor KM1 main contacts and circuit breaker Q F1 access three phase mains, The 2# standby fans pass sequentially through electrothermal relay KH2, contactor KM4 contact and circuit breaker Q F3 access three phase mains, frequency conversion The other end of device is also standby by contactor KM2 main contacts and contactor KM3 main contacts connection 1# main air blowers and 2# respectively Blower fan.

Preferably, the three-phase voltameter is transformer access type three-phase voltameter, U, V, W end of the three-phase voltameter Current transformer TA1, TA2 and TA3 are connected respectively, and three-phase electricity is accessed in U1, V1, W1 end by fuse FU1, FU2 and FU3 respectively Source, A, B end is connected by telecommunication circuit with host computer, U ', V ', W ' ends ground connection.

Preferably, the control system also include control loop, the control loop include manual industrial frequency control loop and Automatic frequency-conversion control loop.

Preferably, one end of the control loop including change-over switch ZT1, the change-over switch ZT1 is started to exchange fire line 501, separately One end connects the other end connecting to neutral of one end of relay KA1 coils and KA2 coils, relay KA1 coils and KA2 coils respectively Line, one end connection live wire 501 of the normally closed electric shocks of relay KA1, other end difference connecting valve SS1, SS2 and relay KA3, The other end of one end of KA4 normally opened contacts, switch SS1 and relay KA3 normally opened contacts is all connected with switching ST1 one end, switch The ST1 other end passes through SRE KA3 coil connecting to neutral lines, the other end of switch SS2 and relay the KA4 normally opened contacts It is all connected with switching ST2 one end, the switch ST2 other end passes through SRE KA4 coil connecting to neutral lines；

The control loop also includes frequency converter, the x1 of the frequency converter：22 ends and x1：25 ends connect live wire 501, described The x1 of frequency converter：24 ends connect one end of relay KA1 normally opened contacts, and the other end of relay KA1 normally opened contacts is connected respectively One end of contactor KM3 normally opened contacts and contactor KM3 normally-closed contacts, the other end of contactor KM3 normally-closed contacts passes through successively The contactor KM1 normally-closed contacts and contactor KM2 coil connecting to neutral lines being connected in series, the contactor KM3 normally opened contacts it is another One end of end difference downlink connection contactor KM2 normally-closed contacts and one end of relay KA1 normally-closed contacts, contactor KM2 is normally closed to be touched The other end of point is by series contactor KM1 coil connecting to neutral lines, and the other end of relay KA1 normally-closed contacts is sequentially connected in series relay KA5 normally opened contacts and relay KA3 normally opened contacts access live wire 501；

The x1 of the frequency converter：27 ends connect relay KA2 normally opened contacts one end, relay KA2 normally opened contacts it is another One end connects one end of contactor KM2 normally opened contacts and contactor KM2 normally-closed contacts respectively, contactor KM2 normally-closed contacts it is another One end is by the contactor KM4 normally-closed contacts and contactor KM3 coil connecting to neutral lines that are sequentially connected in series, and the contactor KM2 is normal Open one end and one end of relay KA2 normally-closed contacts of the other end difference downlink connection contactor KM3 normally-closed contacts of contact, contact The other end of device KM3 normally-closed contacts by series contactor KM4 coil connecting to neutral lines, the other ends of relay KA2 normally-closed contacts according to Secondary SRE KA6 normally opened contacts and relay KA4 normally opened contact accesses live wire 501.

Preferably, the control loop also includes current foldback circuit, and the current foldback circuit includes electrothermal relay KH1, KH2, one end of the electrothermal relay KH1 are started to exchange fire line 501, and the other end is described by SRE KA5 coil connecting to neutral lines Electrothermal relay KH2 one end is started to exchange fire line 501, and the other end passes through SRE KA6 coil connecting to neutral lines, the x1 of frequency converter：10 ends Connect one end of relay KA1 normally opened contacts, the one of another relay termination KA5 normally opened contacts of relay KA1 normally opened contacts End, another termination frequency converter x1 of relay KA5 normally opened contacts：16 ends, the x1 of frequency converter：It is normal that 10 ends are also connected with relay KA2 One end of contact is opened, one end of another relay termination KA6 normally opened contacts of relay KA2 normally opened contacts, relay KA6 is normally opened Another termination frequency converter x1 of contact：17 ends.

Preferably, the telecommunication circuit is RS485 telecommunication circuits.

Preferably, the model G.REAL-M2 of the three-phase voltameter.

Preferably, the major loop also includes current transformer TA4 and TA5, current transformer TA4 and the TA5 difference Connect 1# main air blowers and 2# standby fans.

The beneficial effects of the utility model are：Energy consumption statistic module of the present utility model can monitor blower fan of cooling tower in real time The energy consumption of system；The utility model can realize the switching manually booted with automatic start, beneficial to energy saving of system；Overcurrent protection electricity Road, it is to avoid damage of the high current to device, extends device service life.

Brief description of the drawings

Fig. 1 is main loop circuit figure described in the utility model；

Fig. 2 is the utility model energy consumption statistic module circuit diagram；

Fig. 3 is the utility model control loop circuit diagram.

Embodiment

For the technical characterstic for illustrating this programme can be understood, below by embodiment, and its accompanying drawing is combined, to this reality It is described in detail with new.

This blower fan of cooling tower control system is by the way of one drag two, i.e., one frequency converter adds two cooling blowers.As schemed Shown in 1-3, a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption of the present utility model, its feature It is：Including frequency converter and two cooling blowers, the cooling blower includes 1# main air blowers and 2# standby fans, the control system Also include energy consumption statistic module, the energy consumption statistic module includes three-phase voltameter, the three-phase voltameter access major loop End of incoming cables, one end of the frequency converter is by circuit breaker Q F2 connection three phase mains, and the 1# main air blowers pass sequentially through electrothermal relay KH1, contactor KM1 main contacts and circuit breaker Q F1 access three phase mains, the 2# standby fans pass sequentially through electrothermal relay KH2, contactor KM4 contact and circuit breaker Q F3 access three phase mains, the other end of frequency converter also pass through contactor KM2 respectively Main contacts and contactor KM3 main contacts connection 1# main air blowers and 2# standby fans.

Preferably, the major loop also includes current transformer TA4 and TA5, current transformer TA4 and the TA5 difference Connect 1# main air blowers and 2# standby fans.

Preferably, the three-phase voltameter is transformer access type three-phase voltameter, model G.REAL-M2.Described three U, V, W end of phase voltameter connect current transformer TA1, TA2 and TA3 respectively, U1, V1, W1 end respectively by fuse FU1, FU2 and FU3 access three phase mains, A, B end is connected by telecommunication circuit with host computer, U ', V ', W ' ends ground connection, the communication electricity Road is RS485 telecommunication circuits.

As shown in figure 3, control system can realize multiparty control, the control system also includes control loop, the control Loop processed includes manual industrial frequency control loop and automatic frequency-conversion control loop.

One end of the control loop including change-over switch ZT1, the change-over switch ZT1 is started to exchange fire line 501, other end difference Connect another terminal connecting zero line of one end of relay KA1 coils and KA2 coils, relay KA1 coils and KA2 coils, relay One end connection live wire 501 of the normally closed electric shocks of KA1, other end difference connecting valve SS1, SS2 and relay KA3, KA4 normally opened contact One end, switch SS1 and relay KA3 normally opened contacts the other end be all connected with switch ST1 one end, switch ST1 the other end By SRE KA3 coil connecting to neutral lines, the other end of switch SS2 and relay the KA4 normally opened contacts is all connected with switch ST2 one end, the switch ST2 other end passes through SRE KA4 coil connecting to neutral lines；The control loop also includes frequency conversion Device, the x1 of the frequency converter：22 ends and x1：25 ends connect live wire 501, the x1 of the frequency converter：24 ends connection relay KA1 is normal One end of contact is opened, the other end of relay KA1 normally opened contacts connects contactor KM3 normally opened contacts respectively and contactor KM3 is normal One end of closed contact, the other ends of contactor KM3 normally-closed contacts is by the contactor KM1 normally-closed contacts that are sequentially connected in series and connects Tentaculum KM2 coil connecting to neutral lines, the other end difference downlink connection contactor KM2 normally-closed contacts of the contactor KM3 normally opened contacts One end and one end of relay KA1 normally-closed contacts, the other end of contactor KM2 normally-closed contacts pass through series contactor KM1 coils Connecting to neutral line, the other end of relay KA1 normally-closed contacts is sequentially connected in series relay KA5 normally opened contacts and relay KA3 normally opened contacts Access live wire 501；The x1 of the frequency converter：27 ends connect one end of relay KA2 normally opened contacts, relay KA2 normally opened contacts The other end connect one end of contactor KM2 normally opened contacts and contactor KM2 normally-closed contacts, contactor KM2 normally-closed contacts respectively The other end pass through the contactor KM4 normally-closed contacts and contactor KM3 coil connecting to neutral lines that are sequentially connected in series, the contactor One end of the other end difference downlink connection contactor KM3 normally-closed contacts of KM2 normally opened contacts and the one of relay KA2 normally-closed contacts End, the other ends of contactor KM3 normally-closed contacts by series contactor KM4 coil connecting to neutral lines, relay KA2 normally-closed contacts it is another One end is sequentially connected in series relay KA6 normally opened contacts and relay KA4 normally opened contacts access live wire 501.

Preferably, the control loop also includes current foldback circuit, and the current foldback circuit includes electrothermal relay KH1, KH2, carry out overcurrent protection, and electrothermal relay KH1, KH2 disconnects when current is excessive.A termination of the electrothermal relay KH1 Live wire 501, the other end is by SRE KA5 coil connecting to neutral lines, and one end of the electrothermal relay KH2 is started to exchange fire line 501, another End passes through SRE KA6 coil connecting to neutral lines, the x1 of frequency converter：10 ends connect one end of relay KA1 normally opened contacts, relay One end of another relay termination KA5 normally opened contacts of device KA1 normally opened contacts, another termination of relay KA5 normally opened contacts becomes Frequency device x1：16 ends, the x1 of frequency converter：10 ends are also connected with one end of relay KA2 normally opened contacts, relay KA2 normally opened contacts One end of another relay termination KA6 normally opened contacts, another termination frequency converter x1 of relay KA6 normally opened contacts：17 ends.

The manual industrial frequency control loop and the operation principle of automatic frequency-conversion control loop：Change-over switch ZT1 disconnect when after Electrical equipment KA1 coil no powers, now KA1 normally-closed contacts closure, normally opened contact disconnection, switch SS1 control 1# main air blowers, are switched Relay KA3 coil electricities after SS1 closures, relay KA3 normally opened contacts closure, relay KA5 normally opened contacts closure, contactor KM2 main contacts disconnects KM1 main contacts closure simultaneously, now the manual power frequency startup of 1# main air blowers；Change-over switch ZT1 disconnect constantly after Electrical equipment KA2 coil no powers, now relay KA2 normally-closed contacts closure, normally opened contact disconnection, switch the SS2 control standby wind of 2# Relay KA4 coil electricities after machine, switch SS2 closures, relay KA4 normally opened contacts closure, relay KA6 normally opened contacts are closed Close, contactor KM3 main contacts disconnects contactor KM4 main contacts closure simultaneously, now the manual power frequency startup of 2# standby fans.

Relay KA1 coils and the work of relay KA2 coil electricities, relay KA1 and KA2 when change-over switch ZT1 is closed Normally-closed contact is disconnected, relay KA1 and KA2 normally opened contact closure, if contactor KM2 coil electricities, and contactor KM2 is normally opened to be touched Point closure, contactor KM4 coil electricities, contactor KM1 coils and contactor KM3 coil no powers, now 1# main air blowers are automatic Variable frequency starting, the automatic power frequency startup of 2# standby fans；If contactor KM1 coils obtain electric, contactor KM2 coil no powers connect Tentaculum KM2 normally-closed contacts closure, normally opened contact disconnect, and now contactor KM3 coils obtain electric, contactor KM4 coil no powers, this When the automatic power frequency startup of 1# main air blowers, 2# standby fans automatic frequency-conversion start.

Simply preferred embodiment of the present utility model described above, comes for those skilled in the art Say, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also by It is considered as protection domain of the present utility model.

Claims (8)

1. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption, it is characterized in that：Including frequency converter With two cooling blowers, the cooling blower includes 1# main air blowers and 2# standby fans, and the control system also includes energy consumption and united Module is counted, the energy consumption statistic module includes three-phase voltameter, and the three-phase voltameter accesses the end of incoming cables of major loop, the change One end of frequency device passes sequentially through electrothermal relay KH1, contactor KM1 by circuit breaker Q F2 connection three phase mains, the 1# main air blowers Main contacts and circuit breaker Q F1 access three phase mains, the 2# standby fans pass sequentially through electrothermal relay KH2, contactor KM4 Contact and circuit breaker Q F3 access three phase mains, the other end of frequency converter also pass through contactor KM2 main contacts and contactor respectively KM3 main contacts connection 1# main air blowers and 2# standby fans.

2. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 1, It is characterized in that：The three-phase voltameter is transformer access type three-phase voltameter, and U, V, W end of the three-phase voltameter connect respectively Current transformer TA1, TA2 and TA3 are met, three phase mains, A, B are accessed in U1, V1, W1 end by fuse FU1, FU2 and FU3 respectively End is connected by telecommunication circuit with host computer, U ', V ', W ' ends ground connection.

3. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 1, It is characterized in that：The control system also includes control loop, and the control loop includes manual industrial frequency control loop and automatic change Frequency control loop.

4. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 3, It is characterized in that：One end of the control loop including change-over switch ZT1, the change-over switch ZT1 is started to exchange fire line 501, the other end point Not Lian Jie relay KA1 coils and KA2 coils one end, another terminal connecting zero line of relay KA1 coils and KA2 coils, relay One end connection live wire 501 of the normally closed electric shocks of device KA1, other end difference connecting valve SS1, SS2 and relay KA3, KA4 are normally opened tactile The other end of one end of point, switch SS1 and relay KA3 normally opened contacts is all connected with switching ST1 one end, and switch ST1's is another End is all connected with out by SRE KA3 coil connecting to neutral lines, the other end of switch SS2 and relay the KA4 normally opened contacts ST2 one end is closed, the switch ST2 other end passes through SRE KA4 coil connecting to neutral lines；

The control loop also includes frequency converter, the x1 of the frequency converter：22 ends and x1：25 ends connect live wire 501, the frequency conversion The x1 of device：24 ends connect one end of relay KA1 normally opened contacts, and the other end of relay KA1 normally opened contacts connects contact respectively One end of device KM3 normally opened contacts and contactor KM3 normally-closed contacts, the other end of contactor KM3 normally-closed contacts is by being sequentially connected in series The contactor KM1 normally-closed contacts and contactor KM2 coil connecting to neutral lines of connection, the other end point of the contactor KM3 normally opened contacts One end of other downlink connection contactor KM2 normally-closed contacts and one end of relay KA1 normally-closed contacts, contactor KM2 normally-closed contacts The other end is sequentially connected in series relay KA5 by series contactor KM1 coil connecting to neutral lines, the other end of relay KA1 normally-closed contacts Normally opened contact and relay KA3 normally opened contacts access live wire 501；

The x1 of the frequency converter：27 ends connect one end of relay KA2 normally opened contacts, the other end of relay KA2 normally opened contacts One end of contactor KM2 normally opened contacts and contactor KM2 normally-closed contacts, the other end of contactor KM2 normally-closed contacts are connected respectively By the contactor KM4 normally-closed contacts and contactor KM3 coil connecting to neutral lines being sequentially connected in series, the contactor KM2 is normally opened to be touched One end and one end of relay KA2 normally-closed contacts of the other end difference downlink connection contactor KM3 normally-closed contacts of point, contactor The other end of KM3 normally-closed contacts is by series contactor KM4 coil connecting to neutral lines, and the other end of relay KA2 normally-closed contacts is successively SRE KA6 normally opened contacts and relay KA4 normally opened contacts access live wire 501.

5. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 3, It is characterized in that：The control loop also includes current foldback circuit, and the current foldback circuit includes electrothermal relay KH1, KH2, One end of the electrothermal relay KH1 is started to exchange fire line 501, and the other end passes through SRE KA5 coil connecting to neutral lines, the electrothermal relay KH2 one end is started to exchange fire line 501, and the other end passes through SRE KA6 coil connecting to neutral lines, the x1 of frequency converter：10 ends connect relay One end of device KA1 normally opened contacts, one end of another relay termination KA5 normally opened contacts of relay KA1 normally opened contacts, relay Another termination frequency converter x1 of KA5 normally opened contacts：16 ends, the x1 of frequency converter：10 ends are also connected with the one of relay KA2 normally opened contacts End, one end of another relay termination KA6 normally opened contacts of relay KA2 normally opened contacts, relay KA6 normally opened contacts it is another Terminate frequency converter x1：17 ends.

6. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 2, It is characterized in that：The telecommunication circuit is RS485 telecommunication circuits.

7. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 2, It is characterized in that：The model G.REAL-M2 of the three-phase voltameter.

8. a kind of central air-conditioning blower fan of cooling tower one drag two control system for monitoring real time energy consumption according to claim 1, It is characterized in that：The major loop is also including current transformer TA4 and TA5, and the current transformer TA4 and TA5 connects 1# respectively Main air blower and 2# standby fans.