CN208518921U - One kind controlling cooling water system based on frequency-variable controller - Google Patents
One kind controlling cooling water system based on frequency-variable controller Download PDFInfo
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- CN208518921U CN208518921U CN201721824141.0U CN201721824141U CN208518921U CN 208518921 U CN208518921 U CN 208518921U CN 201721824141 U CN201721824141 U CN 201721824141U CN 208518921 U CN208518921 U CN 208518921U
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Abstract
One kind controlling cooling water system based on frequency-variable controller, it includes cooling water tank, cooling water tank entrance is equipped at the top of cooling water tank, cooling water tank bottom is exported equipped with cooling water tank, cooling water tank outlet connects cooling water pump by pipeline, the cooling water pump other end connects cooling equipment by pipeline, the cooling equipment other end connects heat exchanger by pipeline, the heat exchanger other end connects cooling water tank, the first temperature sensor and pressure sensor are successively arranged on pipeline between the cooling water pump and cooling equipment, cooling equipment is equipped with second temperature sensor, first temperature sensor, pressure sensor and second temperature sensor are all connected with frequency-variable controller.The utility model has the beneficial effects that utilizing the working frequency of frequency-variable controller control cooling water pump, the flow of cooling water is controlled to control device temperature, frequency-variable controller can be ignored the impact of power grid when starting, the consumption of electric energy can effectively be controlled by changing working frequency, and the priority that can control pressure control is higher than the control of temperature.
Description
Technical field
The utility model provides one kind and controls cooling water system based on frequency-variable controller, belongs to shield-tunneling construction field.
Background technique
The cooling system of shield machine is water cooling currently on the market, and cooling water pump has very big rush to power grid when starting
It hits, and longtime running is also very big to the consumption of electricity in power frequency (50Hz)；It is easy to produce when cooling water temperature is too low
Condensation, has certain damage to electrical equipment；Since load variation in water pressure be easy to cause water pump to damage.Such as Chinese invention patent
CN201410481160.2 discloses a kind of shield machine water cooling system, it includes heat exchanger, outer cooling system, interior cyclic system
System etc., with disadvantages mentioned above, can not be accurately controlled the consumption of electricity, and can not also control in system to liquid level also pressure
System, often will cause that refrigeration effect is bad, and serious conditions can also cause construction accident.
Summary of the invention
The utility model solves above-mentioned technical problem and provides one kind based on frequency-variable controller control cooling water system, utilizes change
Frequency controller controls the working frequency of cooling water pump, controls the flow of cooling water to control device temperature, frequency-variable controller opens
The impact of power grid can be ignored when dynamic, the consumption of electric energy can effectively be controlled by changing working frequency；The pressure mistake of water
Height can be controlled effectively by frequency-variable controller.
The utility model solves the technical solution that technical problem uses:
One kind controlling cooling water system based on frequency-variable controller, it includes cooling water tank, is equipped with cooling at the top of cooling water tank
Tank entry, cooling water tank bottom are exported equipped with cooling water tank, and cooling water tank outlet connects cooling water pump, cooling water by pipeline
It pumps the other end and cooling equipment is connected by pipeline, the cooling equipment other end connects heat exchanger by pipeline, and heat exchanger is another
End connects cooling water tank, is successively arranged the first temperature sensor and pressure on the pipeline between the cooling water pump and cooling equipment
Force snesor, cooling equipment are equipped with second temperature sensor, first temperature sensor, pressure sensor and the second temperature
Degree sensor is all connected with frequency-variable controller, if the temperature of cooling equipment is higher, frequency-variable controller carries out the increase of frequency, increases
The flow of water reduces the temperature of cooling equipment；If cooling device temperature is lower, frequency-variable controller reduces frequency, cooling equipment
Temperature will rise, and frequency-variable controller carries out the change of frequency according to the variation of cooling equipment；Frequency-variable controller output frequency increases
When big, the flow of cooling water pump increases, the increase that the pressure of cooling water can also respond, if pressure it is excessive to pipeline, motor and
Frequency-variable controller all influences, and when the pressure of the pressure sensor detection of cooling water pump outlet is excessive, need to reduce frequency-variable controller is
Output reduces pressure, and the control of the preferential temperature of Control sequence of pressure.
Above-mentioned heat exchanger is equipped with outer circulation cooling water entrance, if the temperature of cooling equipment is pumped out with cooling water
Mouthful temperature it is identical, but frequency-variable controller issues alarm signal when temperature is higher, and the heat dissipation capacity of this system has reached pole at this time
Limit, needs to increase heat dissipation capacity by outer circulation.
Above-mentioned cooling water tank is equipped with water-level gauge, and water-level gauge one end connects at the top of cooling water tank, and the other end passes through switch
Valve connects cooling water tank bottom, and water-level gauge is connect with frequency-variable controller with switch valve.
Low liquid level fault sensor is additionally provided on above-mentioned cooling water tank, low liquid level fault sensor and frequency-variable controller connect
It connects.
Above-mentioned frequency-variable controller is equipped with failure, operation and ready light.
Above-mentioned cooling water tank bottom is equipped with dewatering outlet.
Beneficial effects of the present invention:
1, using the working frequency of frequency-variable controller control cooling water pump, the flow of cooling water is controlled to control equipment temperature
Degree, frequency-variable controller can be ignored the impact of power grid when starting, and electric energy can effectively be controlled by changing working frequency
Consumption；When cooling water temperature is too low, frequency-variable controller can be automatically stopped output, etc. temperature rise when frequency-variable controller open automatically
It is dynamic that frequency is adjusted according to temperature；The hypertonia of water can be controlled effectively by frequency-variable controller, and can control pressure
The priority of control is higher than the control of temperature；
2, cooling effect can further be increased by the setting of external circulation cooling system；
3, the components such as water-level gauge and frequency-variable controller etc. are connect, and can increase cooling safety and effect.
Detailed description of the invention
It is illustrated below in conjunction with attached drawing with embodiment
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the connection schematic diagram of the frequency-variable controller of the utility model.
Specific embodiment
Referring to attached drawing 1-2, one kind controlling cooling water system based on frequency-variable controller, it includes cooling water tank 1, cooling water tank
Top is equipped with cooling water tank entrance 2, and cooling water tank bottom is equipped with cooling water tank outlet 3, and cooling water tank outlet is connected by pipeline
Cooling water pump 4, the cooling water pump other end connect cooling equipment 5 by pipeline, and the cooling equipment other end connects heat by pipeline and hands over
Parallel operation 6, the heat exchanger other end connect cooling water tank, are successively arranged on the pipeline between the cooling water pump and cooling equipment
First temperature sensor 7 and pressure sensor 8, cooling equipment are equipped with second temperature sensor 9, first temperature sensing
Device, pressure sensor and second temperature sensor are all connected with frequency-variable controller 10, if the temperature of cooling equipment is higher, frequency conversion control
Device processed carries out the increase of frequency, increases the flow of water, reduces the temperature of cooling equipment；If cooling device temperature is lower, frequency conversion
Controller reduces frequency, and cooling device temperature will rise, and frequency-variable controller carries out changing for frequency according to the variation of cooling equipment
Become；When frequency-variable controller output frequency increases, the flow of cooling water pump increases, the increase that the pressure of cooling water can also respond, such as
Fruit pressure is excessive all to influence pipeline, motor and frequency-variable controller, the pressure mistake of the pressure sensor detection of cooling water pump outlet
When big, need to reduce frequency-variable controller is output, reduces pressure, and the control of the preferential temperature of Control sequence of pressure.
Preferably, the heat exchanger is equipped with outer circulation cooling water entrance 11,12, if the temperature of cooling equipment
It is identical as the temperature of cooling water pump outlet, but frequency-variable controller issues alarm signal, the at this time heat dissipation of this system when temperature is higher
Amount has reached the limit, needs to increase heat dissipation capacity by outer circulation.
Preferably, the cooling water tank is equipped with water-level gauge 13, and water-level gauge one end connects at the top of cooling water tank, the other end
Cooling water tank bottom is connected by switch valve 14, water-level gauge is connect with frequency-variable controller with switch valve.
Preferably, low liquid level fault sensor 15, low liquid level fault sensor and change are additionally provided on the cooling water tank
The connection of frequency controller.
Preferably, the frequency-variable controller is equipped with failure, operation and ready light.
Preferably, the cooling water tank bottom is equipped with dewatering outlet 16.
The control process of this system is described as follows: system mainly pass through the cooling device temperature of temperature sensor inspection with it is cold
But the temperature of exit of pump is compared, if the temperature of equipment is high, frequency-variable controller carries out the increase of frequency, increases the stream of water
Amount reduces the temperature of cooling equipment；If device temperature is low, frequency-variable controller reduces frequency, and device temperature will rise, frequency conversion
Controller just carries out the change of frequency according to the variation of cooling equipment；The temperature of equipment is identical as the temperature that cooling water pump exports,
But the higher sending alarm signal of temperature needs to increase by outer circulation this is because the heat dissipation capacity of this system has reached the limit
Add heat dissipation capacity, frequency-variable controller changes output according to cooling device temperature variation, to reach energy-efficient purpose；Water pump is opening
Dynamic moment is that impact can eliminate to power grid by the control of frequency-variable controller；When frequency-variable controller output frequency increases,
The flow of cooling water pump increases, the increase that the pressure of cooling water can also respond, if pressure is excessive to pipeline, motor and frequency conversion control
Device processed all influences, and when the pressure of the pressure sensor detection of cooling water pump outlet is excessive, needing to reduce frequency-variable controller is output,
Reduce pressure, the priority of the control of pressure is higher than the control of temperature.
The protection scope of the utility model is not limited to the above embodiments, it is clear that those skilled in the art can be right
The utility model carries out various changes and deformation without departing from the scope of the utility model and spirit.If these changes and deformation
Belong in the range of the claims of the present invention and its equivalent technology, then the intention of the utility model also include these change and
Including deformation.
Claims (6)
1. one kind controls cooling water system based on frequency-variable controller, it includes cooling water tank (1), is equipped with cooling at the top of cooling water tank
Tank entry (2), cooling water tank bottom are equipped with cooling water tank outlet (3), and cooling water tank outlet connects cooling water pump by pipeline
(4), the cooling water pump other end is connected cooling equipment (5) by pipeline, and the cooling equipment other end connects heat exchanger by pipeline
(6), the heat exchanger other end connects cooling water tank, it is characterised in that: the pipeline between the cooling water pump and cooling equipment
On be successively arranged the first temperature sensor (7) and pressure sensor (8), cooling equipment is equipped with second temperature sensor (9), institute
The first temperature sensor, pressure sensor and the second temperature sensor stated are all connected with frequency-variable controller (10).
2. according to claim 1 control cooling water system based on frequency-variable controller, it is characterised in that: the heat exchange
Device is equipped with outer circulation cooling water entrance (11,12).
3. according to claim 1 or 2 control cooling water system based on frequency-variable controller, it is characterised in that: described is cold
But water tank is equipped with water-level gauge (13), and water-level gauge one end connects at the top of cooling water tank, and the other end is connected cold by switch valve (14)
But water tank bottom, water-level gauge are connect with frequency-variable controller with switch valve.
4. according to claim 1 or 2 control cooling water system based on frequency-variable controller, it is characterised in that: described is cold
But low liquid level fault sensor (15) are additionally provided on water tank, low liquid level fault sensor is connect with frequency-variable controller.
5. according to claim 1 or 2 control cooling water system based on frequency-variable controller, it is characterised in that: the change
Frequency controller is equipped with failure, operation and ready light.
6. according to claim 1 or 2 control cooling water system based on frequency-variable controller, it is characterised in that: described is cold
But water tank bottom is equipped with dewatering outlet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824141.0U CN208518921U (en) | 2017-12-25 | 2017-12-25 | One kind controlling cooling water system based on frequency-variable controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721824141.0U CN208518921U (en) | 2017-12-25 | 2017-12-25 | One kind controlling cooling water system based on frequency-variable controller |
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| Publication Number | Publication Date |
|---|---|
| CN208518921U true CN208518921U (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721824141.0U Active CN208518921U (en) | 2017-12-25 | 2017-12-25 | One kind controlling cooling water system based on frequency-variable controller |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167202A (en) * | 2017-12-25 | 2018-06-15 | 辽宁三三工业有限公司 | One kind controls cooling water system based on frequency-variable controller |
| CN112455049A (en) * | 2020-11-27 | 2021-03-09 | 扬州朗日新能源科技有限公司 | Efficient laminating machine |
-
2017
- 2017-12-25 CN CN201721824141.0U patent/CN208518921U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108167202A (en) * | 2017-12-25 | 2018-06-15 | 辽宁三三工业有限公司 | One kind controls cooling water system based on frequency-variable controller |
| CN112455049A (en) * | 2020-11-27 | 2021-03-09 | 扬州朗日新能源科技有限公司 | Efficient laminating machine |
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