CN203546825U - Constant pressure water supply system based on PLC control - Google Patents

Constant pressure water supply system based on PLC control Download PDF

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Publication number
CN203546825U
CN203546825U CN201320685999.9U CN201320685999U CN203546825U CN 203546825 U CN203546825 U CN 203546825U CN 201320685999 U CN201320685999 U CN 201320685999U CN 203546825 U CN203546825 U CN 203546825U
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CN
China
Prior art keywords
water supply
supply system
constant pressure
water
control module
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320685999.9U
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Chinese (zh)
Inventor
康珂嘉
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康珂嘉
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Priority to CN201320685999.9U priority Critical patent/CN203546825U/en
Application granted granted Critical
Publication of CN203546825U publication Critical patent/CN203546825U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a constant pressure water supply system based on PLC control. The constant pressure water supply system based on PLC control comprises a pressure sensor, a pressure transmitter, a control unit, a frequency converter and a pump set. The pressure sensor is installed on a water outlet pipeline, detects water pressure signals in the water outlet pipeline and transmits the water pressure signals to the pressure transmitter. The water pressure signals are converted into current signals to be transmitted to the control unit by the pressure transmitter. The control unit controls operation of the frequency converter according to the current signals, the output end of the frequency converter is connected with the pump set, the control unit is connected with an alarm unit, a vertically arranged O-type filter is arranged on a water inlet pipeline of the pump set, and the transverse diameter of the O-type filter is 5-8 times that of the water inlet pipeline. The constant pressure water supply system based on PLC control has the advantages of being simple in structure, flexible in control, high in universality and reliability, small in pressing damage and the like.

Description

The constant pressure water supply system of controlling based on PLC
Technical field
The utility model relates to Electrical Control Technology field, is specifically related to a kind of constant pressure water supply system of controlling based on PLC.
Background technology
Along with the development of variable-frequency control technique and people are to the improving constantly of Drinking Water quality requirements, constant pressure water supply system replaces original water tower water-feeding system gradually, is widely used in multi-storey building community life waterworks for firefighting.Yet, due to the many part used equipments (as water pump) that can continue to use original system of new system, original water system is being carried out in the practice of Frequency Conversion Modification, tend to occur some beyond thought in theory problems.And current used control system complex structure, control loaded down with trivial details and its there is no good communication interface, can not carry out exchanges data with other system, versatility is poor, and debugging inconvenience, the upgrading of system after being unfavorable for, its hydraulic losses of present water system is large in addition, increased the power consumption of unit, greatly increased the operating cost of unit, and current water system can not send alarm signal in the situation that cutting off the water supply and leak, thereby likely lead to major accident.
Utility model content
The defect existing for prior art, the purpose of this utility model be propose a kind of simple in structure, control flexibly, highly versatile, reliability is high, crushing the is little constant pressure water supply system of controlling based on PLC.
The technical solution of the utility model is:
A kind of constant pressure water supply system of controlling based on PLC, comprise pressure sensor, pressure transmitter, control module, frequency converter and pump group, described pressure sensor is arranged on outlet pipeline and detects the hydraulic signal in water lines and send pressure transmitter to, described pressure transmitter converts hydraulic signal current signal to and passes to control module, described control module is controlled the operation of frequency converter according to current signal, the output of described frequency converter is connected with pump group, described control module is connected with alarm unit, on the inlet pipeline of described pump group, be provided with the O type filter of vertical layout, the horizontal diameter of described O type filter is 5~8 times of inlet pipeline.
Optimal technical scheme, described control module is connected with a host computer.
Optimal technical scheme, described alarm unit is audible-visual annunciator.
Optimal technical scheme, the inside of described O type filter is provided with multiple filtration net, and the mesh of each screen pack reduces successively along water inlet direction.
Optimal technical scheme, described pump group comprises three water pumps.
Compared with prior art, useful technique effect of the present utility model is: constant pressure water supply system of the present utility model is stable, easy and simple to handle, can assure feed water safety, quick, reliable, constant pressure water supply has guaranteed quality of water supply, the control system that the PLC of take is main frame has been enriched the control function of system, has improved the reliability of system.And each water pump is controlled by frequency converter, can to water pump, regulate according to pressure signal, it is controlled rationally, power consumption is little, the utility model is also provided with alarm unit in addition, occurs that hydraulic pressure is excessive or too small in the situation that, control module sends alarm signal and realizes and reporting to the police to alarm unit on pipeline, thereby remind maintenance personal to fix a breakdown, ensure normally carrying out of supplying water.The another water inlet in pump group of the present utility model is provided with non-resistance O type filter, can reduce the resistance of water, thereby reduces the power consumption of unit, reduces the running cost of unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Number in the figure explanation: 1, pressure sensor; 2, pressure transmitter; 3, control module; 4, frequency converter; 5, water pump; 6, audible-visual annunciator; 7, O type filter; 8, host computer.
The specific embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As depicted in figs. 1 and 2, a kind of constant pressure water supply system of controlling based on PLC of the present utility model, comprise pressure sensor 1, pressure transmitter 2, control module 3, frequency converter 4 and pump group, described pressure sensor 1 is arranged on outlet pipeline and detects the hydraulic signal in water lines and send pressure transmitter 2 to, described pressure transmitter 2 converts hydraulic signal current signal to and passes to control module 3, described control module 3 is controlled the operation of frequency converter 4 according to current signal, the output of described frequency converter 4 is connected with pump group, described control module 3 is connected with alarm unit, on the inlet pipeline of described pump group, be provided with the O type filter 7 of vertical layout, the horizontal diameter of described O type filter 7 is 5~8 times of inlet pipeline.Control module 3 of the present utility model is programmable logic controller (PLC).Constant pressure water supply system of the present utility model is stable, easy and simple to handle, can assure feed water safety, quick, reliable, constant pressure water supply has guaranteed quality of water supply, the control system that the PLC of take is main frame has been enriched the control function of system, has improved the reliability of system.And each water pump 5 is controlled by frequency converter 4, can to water pump 5, regulate according to pressure signal, it is controlled rationally, power consumption is little, the utility model is also provided with alarm unit in addition, occurs that hydraulic pressure is excessive or too small in the situation that, control module 3 sends alarm signal and realizes and reporting to the police to alarm unit on pipeline, thereby remind maintenance personal to fix a breakdown, ensure normally carrying out of supplying water.The another water inlet in pump group of the present utility model is provided with non-resistance O type filter 7, can reduce the resistance of water, thereby reduces the power consumption of unit, reduces the running cost of unit.
Of the present utility model being characterised in that, described control module 3 is connected with a host computer 8, on host computer 8, upper pressure limit and low pressure limit can be set, thereby and shows that pressure value monitors in real time.
Of the present utility model being characterised in that, described alarm unit is audible-visual annunciator 6, audible-visual annunciator 6 can effectively remind maintenance personal to carry out maintenance work.
Of the present utility model being characterised in that, the inside of described O type filter 7 is provided with multiple filtration net, and the mesh of each screen pack reduces successively along water inlet direction, and the multiple filtration net of setting can effectively filter out impurity.
Of the present utility model being characterised in that, described pump group comprises three water pumps 5.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure transformation that utilizes the utility model manual and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.

Claims (5)

1. a constant pressure water supply system of controlling based on PLC, it is characterized in that, comprise pressure sensor, pressure transmitter, control module, frequency converter and pump group, described pressure sensor is arranged on outlet pipeline and detects the hydraulic signal in water lines and send pressure transmitter to, described pressure transmitter converts hydraulic signal current signal to and passes to control module, described control module is controlled the operation of frequency converter according to current signal, the output of described frequency converter is connected with pump group, described control module is connected with alarm unit, on the inlet pipeline of described pump group, be provided with the O type filter of vertical layout, the horizontal diameter of described O type filter is 5~8 times of inlet pipeline.
2. the constant pressure water supply system of controlling based on PLC according to claim 1, is characterized in that, described control module is connected with a host computer.
3. the constant pressure water supply system of controlling based on PLC according to claim 2, is characterized in that, described alarm unit is audible-visual annunciator.
4. according to the constant pressure water supply system of controlling based on PLC described in claim 1 or 2 or 3, it is characterized in that, the inside of described O type filter is provided with multiple filtration net, and the mesh of each screen pack reduces successively along water inlet direction.
5. the constant pressure water supply system of controlling based on PLC according to claim 4, is characterized in that, described pump group comprises three water pumps.
CN201320685999.9U 2013-11-01 2013-11-01 Constant pressure water supply system based on PLC control Expired - Fee Related CN203546825U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320685999.9U CN203546825U (en) 2013-11-01 2013-11-01 Constant pressure water supply system based on PLC control

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320685999.9U CN203546825U (en) 2013-11-01 2013-11-01 Constant pressure water supply system based on PLC control

Publications (1)

Publication Number Publication Date
CN203546825U true CN203546825U (en) 2014-04-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320685999.9U Expired - Fee Related CN203546825U (en) 2013-11-01 2013-11-01 Constant pressure water supply system based on PLC control

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9857803B1 (en) 2017-02-02 2018-01-02 Water Dimmer, LLC Water conservation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9857803B1 (en) 2017-02-02 2018-01-02 Water Dimmer, LLC Water conservation system

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140416

Termination date: 20141101

EXPY Termination of patent right or utility model