CN204761363U - Can supply automatic frequency conversion constant voltage control system of cooling tower of two sets of unit sharings - Google Patents
Can supply automatic frequency conversion constant voltage control system of cooling tower of two sets of unit sharings Download PDFInfo
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- CN204761363U CN204761363U CN201520485835.0U CN201520485835U CN204761363U CN 204761363 U CN204761363 U CN 204761363U CN 201520485835 U CN201520485835 U CN 201520485835U CN 204761363 U CN204761363 U CN 204761363U
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Abstract
The utility model discloses a can supply automatic frequency conversion constant voltage control system of cooling tower of two sets of unit sharings, including three phase current, DC power supply, control circuit, converter, water pump motor M2, water pump motor M3, setting on always passing in and out the pipeline the teletransmission manometer and set up solenoid valve TA1, the solenoid valve TA2 on a bipartition business turn over pipeline respectively. The utility model discloses a converter constant pressure water supply, set up the solenoid valve respectively on a bipartition business turn over pipeline, two solenoid valves are controlled by auxiliary relay respectively, two auxiliary relay receive the degreasing machine respectively, the enabling signal of dividing the quick -witted hydraulic pressure of strip station, it opens to control corresponding solenoid valve again, and the simultaneous control converter starts, just so can be according to the condition converter automatic control output frequence of start, also can guarantee simultaneously the pressure and the refrigerated effect of pipeline, avoid the phenomenon of big horse dolly, reduce the waste of electric resource.
Description
Technical field
The utility model relates to a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units.
Background technology
In iron and steel enterprise, because defatting machine and banding machine are located in same workshop, therefore the Hydraulic Station of two units shares a set of cooling tower, such design is in order to cost-saving, but in use find to there is more wastes, because two units are not start shooting simultaneously, so just occur out that a machine also will start the coolant pump motor of a 11KW, in order to avoid low load with strong power waste resource, transformation must be optimized to cooling system.
Utility model content
For overcoming the deficiencies in the prior art, the purpose of this utility model is to provide a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units, automatically control output frequency by frequency converter, also can ensure the pressure of pipeline and the effect of cooling simultaneously, avoid the phenomenon of low load with strong power.
The utility model is the technical scheme solving the employing of its technical problem:
A kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units, comprise three phase mains, DC power supply, control circuit, frequency converter, pump motor M2, pump motor M3, be arranged on the distance-transmission pressure gauge on total inlet and outlet piping and be separately positioned on the electromagnetically operated valve TA1 on two branch's inlet and outlet pipings, electromagnetically operated valve TA2, the bus R0 of described three phase mains, S0, the three-phase input end R1 of T0 and frequency converter, S1, T1 correspondence connects, the three-phase output end U0 of described frequency converter, V0, W0 is by the three-phase input end U2 of contactor KM2 and pump motor M2, V2, W2 correspondence connects, the three-phase output end U0 of described frequency converter, V0, W0 is by the three-phase input end U3 of contactor KM3 and pump motor M3, V3, W3 correspondence connects, described distance-transmission pressure gauge is connected with the signal receiving end of frequency converter, described control circuit is provided with push-button switch SB1, Hydraulic Station starting switch SB2, Hydraulic Station starting switch SB3, auxiliary relay K5, auxiliary relay K6, described push-button switch SB1 comprises switch one and the switch two of interlock, and described switch one and switch two always keep one to open a state of closing, coil and the switch one of described contactor KM2 are connected in series in DC power supply two ends, and coil and the switch two of contactor KM3 are connected in series in DC power supply two ends, coil and the auxiliary relay K5 of described electromagnetically operated valve TA1 are connected in series in DC power supply two ends, coil and the auxiliary relay K6 of electromagnetically operated valve TA2 are connected in series in DC power supply two ends, coil and the Hydraulic Station starting switch SB2 of described auxiliary relay K5 are connected in series in DC power supply two ends, and coil and the Hydraulic Station starting switch SB3 of described auxiliary relay K6 are connected in series in DC power supply two ends.
Further, also comprise the blower motor M1 for dispelling the heat, bus R0, S0, T0 of described three phase mains connect by contactor KM1 is corresponding with three-phase input end U1, V1, W1 of blower motor M1; Described controller is also provided with temperature Hydraulic Station starting switch WD, and coil, the temperature Hydraulic Station starting switch WD of described contactor KM1 are connected in series in DC power supply two ends.
Further, described frequency converter adopts model to be the frequency converter of Goodrive100.
Further, described frequency converter is provided with R01A end and the R01C end of exportable frequency converter run signal, be connected with the coil of auxiliary relay K7 between described R01A end and R01C end, coil, temperature Hydraulic Station starting switch WD, the auxiliary relay K7 of described contactor KM1 are connected in series in DC power supply two ends.
Further, also comprise the indicator light one for indicating blower motor M1, pump motor M2, pump motor M3 to run respectively, indicator light two, indicator light three, described indicator light one, contactor KM1, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light two, contactor KM2, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light three, contactor KM3, auxiliary relay K7 are connected in series in DC power supply two ends.
Further, described frequency converter is provided with R02B end and the R02C end of exportable frequency converter failure signal, the coil of auxiliary relay K4 is connected with between described R02B end and R02C end, described auxiliary relay K4 is connected with alarm, and described alarm and auxiliary relay K4 are connected in series in DC power supply two ends.
Further, described control circuit also comprises auxiliary relay K8, described frequency converter is provided with the RVD end and CM end that control frequency converter startup, described auxiliary relay K8 is connected between RVD end with CM end, described auxiliary relay K5, auxiliary relay K6 and after connecing and the coil of auxiliary relay K8 be connected to DC power supply two ends.
The beneficial effects of the utility model are: a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units that the utility model adopts, adopt frequency converter constant pressure water supply, two branch's inlet and outlet pipings arrange electromagnetically operated valve respectively, two electromagnetically operated valves are controlled by auxiliary relay respectively, two auxiliary relays receive defatting machine respectively, the enabling signal of banding machine Hydraulic Station, control corresponding electromagnetically operated valve again to open, and control frequency converter startup simultaneously, so just automatically can control output frequency according to the situation frequency converter of start, also can ensure the pressure of pipeline and the effect of cooling simultaneously, avoid the phenomenon of low load with strong power, reduce the waste of electric resources.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of control circuit of the present utility model.
Embodiment
See figures.1.and.2, a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units of the present utility model, comprises three phase mains, DC power supply, control circuit, frequency converter, pump motor M2, pump motor M3, is arranged on the distance-transmission pressure gauge on total inlet and outlet piping and is separately positioned on electromagnetically operated valve TA1, the electromagnetically operated valve TA2 on two branch's inlet and outlet pipings.
In the present embodiment, described frequency converter adopts model to be the frequency converter of Goodrive100.
This cooling system arranges two water pumps, and one of them can be selected during use as work water pump, and another is as reserve pump, and the motor of two water pumps is respectively pump motor M2, pump motor M3, and two pump motors are driven by frequency converter output frequency signal.Bus R0, S0, T0 of described three phase mains are corresponding with three-phase input end R1, S1, T1 of frequency converter to be connected, three-phase output end U0, V0, W0 of described frequency converter connect by contactor KM2 is corresponding with three-phase input end U2, V2, W2 of pump motor M2, and three-phase output end U0, V0, W0 of described frequency converter connect by contactor KM3 is corresponding with three-phase input end U3, V3, W3 of pump motor M3; Described distance-transmission pressure gauge is connected with the signal receiving end of frequency converter; Described control circuit is provided with push-button switch SB1, Hydraulic Station starting switch SB2, Hydraulic Station starting switch SB3, auxiliary relay K5, auxiliary relay K6, described push-button switch SB1 comprises switch one and the switch two of interlock, and described switch one and switch two always keep one to open a state of closing, coil and the switch one of described contactor KM2 are connected in series in DC power supply two ends, coil and the switch two of contactor KM3 are connected in series in DC power supply two ends, by push-button switch SB1, one of them pump motor is started, another pump motor stops.
Detection data for detecting the pressure of water supply line, and are reached the signal receiving end with frequency converter by described distance-transmission pressure gauge, and frequency converter, according to detection data point reuse output frequency, realizes constant pressure water supply.
Described control circuit is also provided with push-button switch SB1, Hydraulic Station starting switch SB2, Hydraulic Station starting switch SB3, auxiliary relay K5, auxiliary relay K6, coil and the auxiliary relay K5 of described electromagnetically operated valve TA1 are connected in series in DC power supply two ends, coil and the auxiliary relay K6 of electromagnetically operated valve TA2 are connected in series in DC power supply two ends, coil and the Hydraulic Station starting switch SB2 of described auxiliary relay K5 are connected in series in DC power supply two ends, and coil and the Hydraulic Station starting switch SB3 of described auxiliary relay K6 are connected in series in DC power supply two ends.Two electromagnetically operated valves are controlled by auxiliary relay respectively, two auxiliary relays receive the enabling signal of defatting machine, banding machine Hydraulic Station respectively, control corresponding electromagnetically operated valve again to open, and control frequency converter startup simultaneously, so just automatically can control output frequency according to the situation frequency converter of start.
Native system also comprises the blower motor M1 for dispelling the heat, and bus R0, S0, T0 of described three phase mains connect by contactor KM1 is corresponding with three-phase input end U1, V1, W1 of blower motor M1; Described controller is also provided with temperature Hydraulic Station starting switch WD, and coil, the temperature Hydraulic Station starting switch WD of described contactor KM1 are connected in series in DC power supply two ends.Further, described frequency converter is provided with R01A end and the R01C end of exportable frequency converter run signal, the coil of auxiliary relay K7 is connected with between described R01A end and R01C end, coil, temperature Hydraulic Station starting switch WD, the auxiliary relay K7 of described contactor KM1 are connected in series in DC power supply two ends, under making the prerequisite only having frequency converter to start like this, blower motor M1 just can start when temperature is too high.
Native system also comprises indicator light one D1, indicator light two D2, indicator light three D3 for indicating blower motor M1, pump motor M2, pump motor M3 to run respectively, and described indicator light one, contactor KM1, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light two, contactor KM2, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light three, contactor KM3, auxiliary relay K7 are connected in series in DC power supply two ends.
Described frequency converter is provided with R02B end and the R02C end of exportable frequency converter failure signal, the coil of auxiliary relay K4 is connected with between described R02B end and R02C end, described auxiliary relay K4 is connected with alarm, and described alarm and auxiliary relay K4 are connected in series in DC power supply two ends.Frequency converter is once break down, and namely alarm can report to the police at once.
Described control circuit also comprises auxiliary relay K8, described frequency converter is provided with the RVD end and CM end that control frequency converter startup, described auxiliary relay K8 is connected between RVD end and CM end, described auxiliary relay K5, auxiliary relay K6 and after connecing and the coil of auxiliary relay K8 be connected to DC power supply two ends, when making to only have some electromagnetically operated valves to open like this, frequency converter could start.
The above, just preferred embodiment of the present utility model, the utility model is not limited to above-mentioned execution mode, as long as it reaches technique effect of the present utility model with identical means, all should belong to protection range of the present utility model.
Claims (7)
1. the cooling tower automatic frequency-conversion control system of invariable pressure that can share for two cover units, it is characterized in that: comprise three phase mains, DC power supply, control circuit, frequency converter, pump motor M2, pump motor M3, be arranged on the distance-transmission pressure gauge on total inlet and outlet piping and be separately positioned on the electromagnetically operated valve TA1 on two branch's inlet and outlet pipings, electromagnetically operated valve TA2, the bus R0 of described three phase mains, S0, the three-phase input end R1 of T0 and frequency converter, S1, T1 correspondence connects, the three-phase output end U0 of described frequency converter, V0, W0 is by the three-phase input end U2 of contactor KM2 and pump motor M2, V2, W2 correspondence connects, the three-phase output end U0 of described frequency converter, V0, W0 is by the three-phase input end U3 of contactor KM3 and pump motor M3, V3, W3 correspondence connects, described distance-transmission pressure gauge is connected with the signal receiving end of frequency converter, described control circuit is provided with push-button switch SB1, Hydraulic Station starting switch SB2, Hydraulic Station starting switch SB3, auxiliary relay K5, auxiliary relay K6, described push-button switch SB1 comprises switch one and the switch two of interlock, and described switch one and switch two always keep one to open a state of closing, coil and the switch one of described contactor KM2 are connected in series in DC power supply two ends, and coil and the switch two of contactor KM3 are connected in series in DC power supply two ends, coil and the auxiliary relay K5 of described electromagnetically operated valve TA1 are connected in series in DC power supply two ends, coil and the auxiliary relay K6 of electromagnetically operated valve TA2 are connected in series in DC power supply two ends, coil and the Hydraulic Station starting switch SB2 of described auxiliary relay K5 are connected in series in DC power supply two ends, and coil and the Hydraulic Station starting switch SB3 of described auxiliary relay K6 are connected in series in DC power supply two ends.
2. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 1, it is characterized in that: also comprise the blower motor M1 for dispelling the heat, bus R0, S0, T0 of described three phase mains connect by contactor KM1 is corresponding with three-phase input end U1, V1, W1 of blower motor M1; Described controller is also provided with temperature Hydraulic Station starting switch WD, and coil, the temperature Hydraulic Station starting switch WD of described contactor KM1 are connected in series in DC power supply two ends.
3. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 2, is characterized in that: described frequency converter adopts model to be the frequency converter of Goodrive100.
4. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 3, it is characterized in that: described frequency converter is provided with R01A end and the R01C end of exportable frequency converter run signal, be connected with the coil of auxiliary relay K7 between described R01A end and R01C end, coil, temperature Hydraulic Station starting switch WD, the auxiliary relay K7 of described contactor KM1 are connected in series in DC power supply two ends.
5. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 3, it is characterized in that: also comprise the indicator light one for indicating blower motor M1, pump motor M2, pump motor M3 to run respectively, indicator light two, indicator light three, described indicator light one, contactor KM1, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light two, contactor KM2, auxiliary relay K7 are connected in series in DC power supply two ends; Described indicator light three, contactor KM3, auxiliary relay K7 are connected in series in DC power supply two ends.
6. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 3, it is characterized in that: described frequency converter is provided with R02B end and the R02C end of exportable frequency converter failure signal, the coil of auxiliary relay K4 is connected with between described R02B end and R02C end, described auxiliary relay K4 is connected with alarm, and described alarm and auxiliary relay K4 are connected in series in DC power supply two ends.
7. a kind of cooling tower automatic frequency-conversion control system of invariable pressure shared for two cover units according to claim 3, it is characterized in that: described control circuit also comprises auxiliary relay K8, described frequency converter is provided with the RVD end and CM end that control frequency converter startup, described auxiliary relay K8 is connected between RVD end with CM end, described auxiliary relay K5, auxiliary relay K6 and after connecing and the coil of auxiliary relay K8 be connected to DC power supply two ends.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520485835.0U CN204761363U (en) | 2015-07-03 | 2015-07-03 | Can supply automatic frequency conversion constant voltage control system of cooling tower of two sets of unit sharings |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520485835.0U CN204761363U (en) | 2015-07-03 | 2015-07-03 | Can supply automatic frequency conversion constant voltage control system of cooling tower of two sets of unit sharings |
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| CN204761363U true CN204761363U (en) | 2015-11-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987918A (en) * | 2017-04-24 | 2017-07-28 | 厦门象屿兴泓特种材料有限公司 | A kind of composite spinning measures apparatus for controlling pump |
| CN109391176A (en) * | 2018-12-21 | 2019-02-26 | 荣成市固废综合处理与应用产业园有限公司 | A kind of industrial water pump motor work system |
-
2015
- 2015-07-03 CN CN201520485835.0U patent/CN204761363U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106987918A (en) * | 2017-04-24 | 2017-07-28 | 厦门象屿兴泓特种材料有限公司 | A kind of composite spinning measures apparatus for controlling pump |
| CN106987918B (en) * | 2017-04-24 | 2022-10-14 | 厦门象屿兴泓特种材料有限公司 | Composite spinning metering pump control device |
| CN109391176A (en) * | 2018-12-21 | 2019-02-26 | 荣成市固废综合处理与应用产业园有限公司 | A kind of industrial water pump motor work system |
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