CN205530483U - Cold water constant -pressure variable -frequency control system - Google Patents
Cold water constant -pressure variable -frequency control system Download PDFInfo
- Publication number
- CN205530483U CN205530483U CN201620361410.3U CN201620361410U CN205530483U CN 205530483 U CN205530483 U CN 205530483U CN 201620361410 U CN201620361410 U CN 201620361410U CN 205530483 U CN205530483 U CN 205530483U
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- water
- pressure
- converter
- water supply
- water pump
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Abstract
The utility model discloses a cold water constant -pressure variable -frequency control system, including water source, converter, water pump, cooling water set, water supply pipe, pressure sensor and host computer, the water inlet and the water source of water pump are connected, and the delivery port of water pump is connected with the water inlet of cooling water set, the delivery port and the water supply pipe intercommunication of cooling water set, and water supply pipe is inside to be provided with pressure sensor, and pressure sensor is connected with the input of converter, and the output and the water pump of converter are connected, the equal and upper computer connection of pressure sensor and converter. The utility model discloses a real time monitoring to entire system is realized to the host computer, can in time learn the actual pressure value in the water supply pipe to through the operation of converter control pump, make and maintain the constant voltage in the water supply pipe, can effectively prevent pipeline breaking, prevent system component's damage, ensure entire system's safety, improve the work efficiency of system, reduce and unnecessarily lose, do benefit to the debugging and maintain.
Description
Technical field
This utility model relates generally to chilled water blood circulation manostatic technique field, specifically a kind of cool water constant-pressure
Frequency-changing control system.
Background technology
Common constant voltage variable frequency control system be by control the water yield keep intrasystem pressure stability automatically to
Water control system, wherein, to provide stable signal to control water pump system, in order to carry to motor to motor
For stable signal, system generally uses PID control strategy, to control the rotating speed of motor, obtains stable
Pressure.But frequency-changing control system lacks necessary safety control structure, when running into extreme case, system without
Method is automatically adjusted, and whole system may be made to collapse, cause irreversible destruction.Particularly, transport in system
During row, it is impossible to the force value in monitoring system easily, not having warning function, it is unnecessary to cause to system
Loss, it is difficult to later stage debugging and maintenance, causes system work efficiency to reduce.
Utility model content
In order to solve deficiency of the prior art, this utility model provides a kind of cool water constant-pressure frequency-changing control system,
The real-time monitoring to whole system is realized, it is possible to learn the actual pressure in water supply line in time by host computer
Value, and by the operation of Frequency Converter Control water pump so that maintain constant voltage in water supply line, can effectively prevent
Pipeline breaking, prevents the damage of system component, it is ensured that the safety of whole system, improves system work efficiency,
Reduce unnecessary loss, be beneficial to debugging and safeguard.
This utility model for achieving the above object, is achieved through the following technical solutions:
A kind of cool water constant-pressure frequency-changing control system, including water source, converter, water pump, handpiece Water Chilling Units, water supply
Pipeline, pressure transducer and host computer, the water inlet of described water pump is connected with water source, the water outlet of described water pump
Mouth is connected with the water inlet of handpiece Water Chilling Units, and the outlet of described handpiece Water Chilling Units connects with water supply line, described confession
Waterpipe is internally provided with pressure transducer, and described pressure transducer is connected with the input of converter, described
The outfan of converter is connected with water pump, and described pressure transducer and converter are all connected with host computer.
Being additionally provided with relief valve on described water supply line, described relief valve is connected with the outfan of converter.
Described host computer is provided with pressure alarm unit and pressure display unit.
Described pressure alarm unit includes upper pressure limit alarm unit and low pressure limit alarm unit.
Described host computer is provided with pressure regulating unit, and described pressure regulating unit is connected with water pump.
Contrast prior art, this utility model has the beneficial effects that:
1, this utility model realizes the real-time monitoring to whole system by host computer, it is possible to learn water supply in time
Actual pressure value in pipeline, and by the operation of Frequency Converter Control water pump so that maintain perseverance in water supply line
Pressure, can effectively prevent pipeline breaking, prevent the damage of system component, it is ensured that the safety of whole system, carry
High system work efficiency, reduces unnecessary loss, is beneficial to debugging and safeguards.
2, being additionally provided with relief valve on water supply line, relief valve is connected with the outfan of converter, works as pressure sensing
When force value in the water supply line that device is measured is more than the second higher limit of setup pressure value, converter is to pressure release
One enabling signal of valve, relief valve is opened, and is quickly reduced by the pressure in water supply line, to guarantee native system
Safe operation.
3, host computer is provided with pressure alarm unit and pressure display unit, and pressure alarm unit includes on pressure
Limit alarm unit and low pressure limit alarm unit, pressure display unit can show the reality in water supply line in real time
Border force value, when actual pressure value exceeds lower limit and first higher limit of setup pressure value, pressure alarm
Unit can send alarm signal, reminds operator to safeguard system, if actual pressure value does not has always
Have and effectively regulated, show that native system breaks down, it is simple to learn the system failure in time, carry out and remedy
Measure.
4, host computer is provided with pressure regulating unit, and pressure regulating unit is connected with water pump, when pressure display is single
When the actual pressure value of unit's display is the most effectively regulated, it may be possible to converter breaks down, this
Time can manually regulate pressure regulating unit on host computer native system is carried out the regulation of constant voltage, anti-
The destruction of whole system is only caused because of frequency converter failure.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
Label shown in accompanying drawing: 1, water source；2, converter；3, water pump；4, handpiece Water Chilling Units；5, supply water
Pipeline；6, pressure transducer；7, host computer；8, relief valve.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the utility model is described in further detail.Should be understood that these are implemented
Example is merely to illustrate this utility model rather than limits scope of the present utility model.In addition, it is to be understood that readding
After having read the content that this utility model is lectured, this utility model can be made various changing by those skilled in the art
Moving or amendment, these equivalent form of values fall within the application appended claims limited range equally.
A kind of cool water constant-pressure frequency-changing control system, including water source 1, converter 2, water pump 3, handpiece Water Chilling Units 4,
Water supply line 5, pressure transducer 6 and host computer 7, the water inlet of described water pump 3 is connected with water source 1, institute
The water inlet of the outlet and handpiece Water Chilling Units 4 of stating water pump 3 is connected, the outlet of described handpiece Water Chilling Units 4 and confession
Waterpipe 5 connects.Described water supply line 5 is internally provided with pressure transducer 6, described pressure transducer 6 with
The input of converter 2 connects, and the outfan of described converter 2 is connected with water pump 3, and native system ran
Cheng Zhong, pressure transducer 6 is measured the pressure in water supply line 5, and is passed to the analogue signal of pressure become
Frequently device 2, converter 2 carries out calculating control by PID regulation control strategy, and converter 2 exports PID and calculates
Speed control signal to water pump 3, control the operation of water pump 3, make that water supply line 5 is internal keeps constant voltage.Institute
State pressure transducer 6 and converter 2 is all connected with host computer 7.The feed pipe that pressure transducer 6 will be measured
Road 5 actual pressure value passes to host computer 7, thus supplies water in monitoring system that can be real-time on host computer 7
The force value of pipeline 5.
Operation principle of the present utility model is: in native system running, and pressure transducer 6 measures feed pipe
Pressure in road 5, and the actual pressure value recorded is passed to converter 2, the reality that converter 2 will be measured
Force value contrasts with setup pressure value, when actual pressure value is more than or equal on the first of setup pressure value
During limit value, converter 2 will reduce frequency automatically, thus control water pump 3 and reduce speed so that water supply line 5
Interior pressure reduces；When actual pressure value is less than or equal to the lower limit of setup pressure value, converter 2 will
Automatically increase frequency, thus control water pump 3 and advance the speed so that the pressure in water supply line 5 rises, logical
Cross converter 2 and control water pump 3 so that maintain constant voltage in water supply line 5, can effectively prevent pipeline breaking,
Prevent the damage of system component, it is ensured that security of system, run efficiently, reduce unnecessary loss, be beneficial to adjust
Examination and maintenance.
Further, described water supply line 5 is additionally provided with relief valve 8, described relief valve 8 and converter 2
Outfan connects.When the actual pressure value in the water supply line 5 that pressure transducer 6 is measured is more than setting pressure
During the second higher limit (the second higher limit is more than the first higher limit) being worth, converter 2 is transferred to relief valve 8
Enabling signal so that relief valve 8 is opened, quickly reduces the pressure in water supply line 5, to guarantee that this is
The safe operation of system.
Described host computer 7 is provided with pressure alarm unit and pressure display unit, described pressure alarm unit bag
Include upper pressure limit alarm unit and low pressure limit alarm unit.The water supply line 5 that pressure transducer 6 will be measured
Force value passes to host computer 7, and pressure display unit can show the actual pressure value of water supply line 5 in real time,
When actual pressure value exceeds lower limit and first higher limit of setup pressure value, pressure alarm unit can be sent out
Go out alarm signal, remind operator system to be safeguarded, if actual pressure value never obtains effectively
Regulation, show that native system breaks down, it is simple to learn the system failure in time, carry out remedial measure.
Described host computer 7 is provided with pressure regulating unit, and described pressure regulating unit is connected with water pump 3, when
When the actual pressure value that pressure display unit shows the most effectively is regulated, it may be possible to converter 2
Break down, now can manually regulate pressure regulating unit on host computer 7 and native system is carried out
The regulation of constant voltage, prevents from causing the destruction of whole system because of converter 2 fault.
Embodiment
A kind of cool water constant-pressure frequency-changing control system, including water source 1, converter 2, water pump 3, handpiece Water Chilling Units 4,
Water supply line 5, pressure transducer 6 and host computer 7, the water inlet of described water pump 3 is connected with water source 1, institute
The water inlet of the outlet and handpiece Water Chilling Units 4 of stating water pump 3 is connected, the outlet of described handpiece Water Chilling Units 4 and confession
Waterpipe 5 connects, and described water supply line 5 is internally provided with pressure transducer 6, described pressure transducer 6 with
The input of converter 2 connects, and the outfan of described converter 2 is connected with water pump 3, described pressure sensing
Device 6 and converter 2 are all connected with host computer 7.Be additionally provided with relief valve 8 on described water supply line 5, described in let out
Pressure valve 8 is connected with the outfan of converter 2.Described host computer 7 includes display screen, and described display screen sets
There are pressure alarm unit and pressure display unit.Described alarm unit includes upper pressure limit alarm unit and pressure
Lower limit alarm unit, described host computer 7 is provided with pressure regulating unit, described pressure regulating unit and water pump 3
Connect.Having the beneficial effects that of the present embodiment: this utility model is realized whole system by host computer 7
Monitoring in real time, it is possible to learn the force value in water supply line 5 in time, and control water pump by converter 2
Run so that maintain constant voltage in water supply line 5, can effectively prevent pipeline breaking, prevent system component
Damage, it is ensured that the safety of whole system, improve system work efficiency, reduce unnecessary loss, be beneficial to debugging
And maintenance；When actual pressure value exceeds lower limit and first higher limit of setup pressure value, pressure alarm list
Unit can send alarm signal, reminds operator to safeguard system, when system is not automatically adjusted,
Can manually control pressure regulating unit on host computer 7 and system is carried out the regulation of constant voltage, prevent
The destruction of whole system is caused because of converter 2 fault.
Claims (5)
1. a cool water constant-pressure frequency-changing control system, is characterized in that: include water source (1), converter (2),
Water pump (3), handpiece Water Chilling Units (4), water supply line (5), pressure transducer (6) and host computer (7), institute
The water inlet stating water pump (3) is connected with water source (1), the outlet of described water pump (3) and handpiece Water Chilling Units (4)
Water inlet connect, the outlet of described handpiece Water Chilling Units (4) connects with water supply line (5), described water supply
Pipeline (5) is internally provided with pressure transducer (6), described pressure transducer (6) and converter (2)
Input connects, and the outfan of described converter (2) is connected with water pump (3), described pressure transducer (6)
All it is connected with host computer (7) with converter (2).
A kind of cool water constant-pressure frequency-changing control system the most according to claim 1, is characterized in that: described confession
Being additionally provided with relief valve (8) on waterpipe (5), described relief valve (8) connects with the outfan of converter (2)
Connect.
A kind of cool water constant-pressure frequency-changing control system the most according to claim 1 and 2, is characterized in that: institute
State host computer (7) and be provided with pressure alarm unit and pressure display unit.
A kind of cool water constant-pressure frequency-changing control system the most according to claim 3, is characterized in that: described pressure
Power alarm unit includes upper pressure limit alarm unit and low pressure limit alarm unit.
A kind of cool water constant-pressure frequency-changing control system the most according to claim 4, is characterized in that: on described
Position machine (7) is provided with pressure regulating unit, and described pressure regulating unit is connected with water pump (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361410.3U CN205530483U (en) | 2016-04-26 | 2016-04-26 | Cold water constant -pressure variable -frequency control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620361410.3U CN205530483U (en) | 2016-04-26 | 2016-04-26 | Cold water constant -pressure variable -frequency control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205530483U true CN205530483U (en) | 2016-08-31 |
Family
ID=56796528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620361410.3U Expired - Fee Related CN205530483U (en) | 2016-04-26 | 2016-04-26 | Cold water constant -pressure variable -frequency control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205530483U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543927A (en) * | 2018-04-24 | 2018-09-18 | 昆山莱特库勒机械有限公司 | A kind of constant pressure control method of cold |
| CN109338088A (en) * | 2018-12-05 | 2019-02-15 | 成都福斯汽车电线有限公司 | A kind of anti-interruption system and method for annealing liquid feed flow |
-
2016
- 2016-04-26 CN CN201620361410.3U patent/CN205530483U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108543927A (en) * | 2018-04-24 | 2018-09-18 | 昆山莱特库勒机械有限公司 | A kind of constant pressure control method of cold |
| CN108543927B (en) * | 2018-04-24 | 2020-09-01 | 昆山莱特库勒机械有限公司 | Constant-pressure control method of spot-cooling machine |
| CN109338088A (en) * | 2018-12-05 | 2019-02-15 | 成都福斯汽车电线有限公司 | A kind of anti-interruption system and method for annealing liquid feed flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20160831 Termination date: 20170426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |