CN203810598U - Primary pump multi-condition variable flow system - Google Patents
Primary pump multi-condition variable flow system Download PDFInfo
- Publication number
- CN203810598U CN203810598U CN201420173756.1U CN201420173756U CN203810598U CN 203810598 U CN203810598 U CN 203810598U CN 201420173756 U CN201420173756 U CN 201420173756U CN 203810598 U CN203810598 U CN 203810598U
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- Prior art keywords
- pump
- cooling water
- speed
- chilling units
- flow
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 239000000498 cooling water Substances 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 238000004378 air conditioning Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 11
- 238000010977 unit operation Methods 0.000 description 8
- 238000005265 energy consumption Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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- Air Conditioning Control Device (AREA)
Abstract
The utility model relates to a primary pump multi-condition variable flow system, used for an air-conditioning cooling water system. The cooling water system comprises a plurality of parallel cold water sets, a plurality of parallel cooling water pumps and a plurality of parallel cooling towers; the cold water sets, the cooling water pumps and the cooling towers are in series connection through a cooling water supply and return header pipe; the number of the cold water sets is the same with the number of the cooling water pumps. The cooling water pumps comprise a constant-speed pump and a plurality of variable-speed pumps. The primary pump multi-condition variable flow system reduces investment of constant flow valves and only adds a pump speed variator; thus the primary pump multi-condition variable flow system possesses the characteristics of small initial investment and substantial energy saving effect, and is in favor of popularization.
Description
Technical field
The utility model relates to the water system of central air conditioner system, more particularly, relates to a kind of primary pump multi-state variable flow system.
Background technology
Primary pump constant flow water system adopts constant speed water pump and constant flow handpiece Water Chilling Units.When system operation, constant by the discharge of water pump and handpiece Water Chilling Units; In the time that air conditioner load changes, first adapt to load variations by the form that changes supply backwater temperature difference, in the time that difference variation reaches certain limit, then adjust by the mode of increase and decrease handpiece Water Chilling Units and water pump operation number of units.For the air conditioning cooling water system sharing for the female pipe of backwater, and single loop or the consistent many loops cooling water system for air conditioning of part throttle characteristics, when water pump operation number of units is during lower than total number of units, SR declines, pump head does not but change, and conventionally adopts constant flow rate valve automatically to consume the lift of water pump affluence.Because air-conditioning system most of time is to move in 40%～80% load range, therefore in most of time, the situation that water pump all exists rich lift to be wasted.But, because this system control is simple, without excessive demand, very general at air conditioning cooling water system and chilled water system application at present to handpiece Water Chilling Units.
Primary pump variable flow system adopts velocity fluctuation pump and variable-flow handpiece Water Chilling Units.When system operation, change by the discharge of water pump and handpiece Water Chilling Units.In the time that air conditioner load changes, first supply the form of circling water flow rate to adapt to load variations by change, in the time that changes in flow rate reaches certain limit, then adjust by the mode that changes supply backwater temperature difference or increase and decrease handpiece Water Chilling Units and water pump operation number of units.Primary pump variable flow system can well be saved pump energy consumption, but owing to having reduced the discharge of handpiece Water Chilling Units, can cause the refrigerating efficiency of handpiece Water Chilling Units to decline.In addition, this system requirements handpiece Water Chilling Units has larger changes in flow rate scope, and control system complexity has also limited its range of application.
Summary of the invention
The technical problems to be solved in the utility model is, good energy-conserving effect, primary pump multi-state variable flow system that cost is low are provided.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of primary pump multi-state variable flow system, for air conditioning cooling water system, cooling water system comprises the cooling water pump of the handpiece Water Chilling Units of multiple parallel connections, multiple parallel connections and the cooling tower of multiple parallel connections, described handpiece Water Chilling Units, cooling water pump and cooling tower supply back house steward's series connection by cooling water, the quantity of described handpiece Water Chilling Units is identical with the quantity of cooling water pump, and described cooling water pump comprises a constant speed pump and Duo Tai speed-variable pump.
In such scheme, under declared working condition, the flow of separate unit speed-variable pump is greater than separate unit handpiece Water Chilling Units flow, and the flow of separate unit constant speed pump is less than the flow of separate unit handpiece Water Chilling Units.
In such scheme, described speed-variable pump adopts converter plant speed change.
Implement primary pump multi-state variable flow system of the present utility model, there is following beneficial effect:
1, compared with conventional primary pump constant flow water system, native system does not need to arrange constant flow rate valve, and the lift under water pump declared working condition is reduced to 5～8%, thereby water pump total energy consumption benchmark is reduced to 5～8%.
2, for the water system that three same capability handpiece Water Chilling Units are set, compared with conventional primary pump constant flow water system, in the time that main resistance under declared working condition and drag overall ratio are 0.25, in the time of two unit operations, water pump Energy Intensity Reduction 9.4%, in the time of a unit operation, the Energy Intensity Reduction 22.2% of water pump.Along with main resistance under declared working condition and drag overall ratio increase, native system energy-saving effect is better obviously.
3, for the water system that three same capability ground source heat pumps are set, compared with conventional primary pump constant flow water system, in the time that the external resistance of declared working condition machine room lower and drag overall ratio are 0.5, in the time of two unit operations, water pump Energy Intensity Reduction 17.7%, in the time of a unit operation, the Energy Intensity Reduction 44.4% of water pump, energy-saving effect is very remarkable.
4 compare with primary pump constant flow water system, and the utility model, in reducing constant flow rate valve investment, has only increased the speed change gear of water pump, can reach above-mentioned energy-saving effect, drop into low, energy-saving effect is remarkable, be conducive to promote the use of.
Brief description of the drawings
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the schematic diagram of cooling water system in primary pump multi-state variable flow system;
In figure: 1 handpiece Water Chilling Units 2 cooling tower 3 cooling water pumps.
Detailed description of the invention
Understand for technical characterictic of the present utility model, object and effect being had more clearly, now contrast accompanying drawing and describe detailed description of the invention of the present utility model in detail.
As shown in Figure 1, the utility model primary pump multi-state variable flow system is in the application of cooling water system.
Cooling water system comprises the cooling water pump 3 of the handpiece Water Chilling Units 1 of multiple parallel connections, multiple parallel connections and the cooling tower 2 of multiple parallel connections, and handpiece Water Chilling Units 1, cooling water pump 3 and cooling tower 2 supply back house steward's series connection by cooling water.
The quantity of handpiece Water Chilling Units 1 is identical with the quantity of cooling water pump 3, and cooling water pump 3 comprises a constant speed pump and Duo Tai speed-variable pump.Speed-variable pump is realized efficient speed change by converter plant.The total flow of the total flow of all cooling water pumps 3 and handpiece Water Chilling Units 1 unit is consistent.Under declared working condition, the flow of separate unit speed-variable pump is greater than separate unit handpiece Water Chilling Units 1 flow, and the flow of separate unit constant speed pump is less than the flow of separate unit handpiece Water Chilling Units 1.Constant speed pump only moves under the operating mode of handpiece Water Chilling Units standard-sized sheet.
Parameters of pump setting means is as shown in table 1:
Table 1
Below illustrate the setting situation of the each duty parameter of speed-variable pump.
Example one: select two same capability handpiece Water Chilling Units and two cooling water pumps, a wherein constant speed pump, a speed-variable pump.Refer to table 2:
Table 2
Example two: select three same capability handpiece Water Chilling Units and three cooling water pumps, a wherein constant speed pump, two speed-variable pumps.Refer to table 3:
Table 3
When operating mode 2, it is more more than needed 5.2% than handpiece Water Chilling Units that water pump calculates total flow, when actual motion, and the flow slight reduction of more above-mentioned calculated value water pump, lift increases a little, and energy consumption reduces to some extent.
Example three: select four capacity handpiece Water Chilling Units and cooling water pump, a wherein constant speed pump, three speed-variable pumps.Full edition 4:
Table 4
Operating mode 2,3 o'clock, water pump calculates total flow and has more than needed 8.8%, 2.2% respectively than handpiece Water Chilling Units, when actual motion, the flow slight reduction of more above-mentioned calculated value water pump, lift increases a little, and energy consumption reduces to some extent.
When operation, adjust water pump according to handpiece Water Chilling Units operation number of units and open number of units and rotating speed.When handpiece Water Chilling Units adds machine or subtracts machine, corresponding increase and decrease water pump operation number of units, and will be adjusted to appropriate level at the pump rotary speed of operation.
The utility model is also applicable to soil source heat pump heat source side water system.Implementation and cooling water system are similar.
The beneficial effect that the utility model reaches:
1, compared with conventional primary pump constant flow water system, native system does not need to arrange constant flow rate valve, lift under water pump declared working condition is reduced to 5～8%, and (initial resistance of constant flow rate valve is generally 20～30kPa, pump head is conventionally at 30～40kPa), thus water pump total energy consumption benchmark is reduced to 5～8% (they are greater than the loss that increases speed change gear).
2, for the water system that three same capability handpiece Water Chilling Units are set, compared with conventional primary pump constant flow water system, in the time that main resistance under declared working condition and drag overall ratio are 0.25, in the time of two unit operations, water pump Energy Intensity Reduction 9.4%, in the time of a unit operation, the Energy Intensity Reduction 22.2% of water pump.Along with main resistance under declared working condition and drag overall ratio increase, native system energy-saving effect is better obviously.
3, for the water system that three same capability ground source heat pumps are set, compared with conventional primary pump constant flow water system, in the time that the external resistance of declared working condition machine room lower and drag overall ratio are 0.5, in the time of two unit operations, water pump Energy Intensity Reduction 17.7%, in the time of a unit operation, the Energy Intensity Reduction 44.4% of water pump, energy-saving effect is very remarkable.
4 compare with primary pump constant flow water system, and the utility model, in reducing constant flow rate valve investment, has only increased the speed change gear of water pump, can reach above-mentioned energy-saving effect, drop into low, energy-saving effect is remarkable, be conducive to promote the use of.
By reference to the accompanying drawings embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not departing from the scope situation that the utility model aim and claim protect, also can make a lot of forms, within these all belong to protection of the present utility model.
Claims (3)
1. a primary pump multi-state variable flow system, for air conditioning cooling water system, it is characterized in that, cooling water system comprises the cooling water pump of the handpiece Water Chilling Units of multiple parallel connections, multiple parallel connections and the cooling tower of multiple parallel connections, described handpiece Water Chilling Units, cooling water pump and cooling tower supply back house steward's series connection by cooling water, the quantity of described handpiece Water Chilling Units is identical with the quantity of cooling water pump, and described cooling water pump comprises a constant speed pump and Duo Tai speed-variable pump.
2. primary pump multi-state variable flow system according to claim 1, is characterized in that, described speed-variable pump adopts converter plant speed change.
3. primary pump multi-state variable flow system according to claim 1, is characterized in that, under declared working condition, the flow of separate unit speed-variable pump is greater than separate unit handpiece Water Chilling Units flow, and the flow of separate unit constant speed pump is less than the flow of separate unit handpiece Water Chilling Units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173756.1U CN203810598U (en) | 2014-04-11 | 2014-04-11 | Primary pump multi-condition variable flow system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173756.1U CN203810598U (en) | 2014-04-11 | 2014-04-11 | Primary pump multi-condition variable flow system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203810598U true CN203810598U (en) | 2014-09-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420173756.1U Expired - Lifetime CN203810598U (en) | 2014-04-11 | 2014-04-11 | Primary pump multi-condition variable flow system |
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| CN (1) | CN203810598U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221384A (en) * | 2015-10-22 | 2016-01-06 | 广州市设计院 | Air-conditioning system identical lift different flow Combined water pump structure and controlling method |
| CN105221385A (en) * | 2015-10-22 | 2016-01-06 | 广州市设计院 | Air-conditioning system different lift different flow Combined water pump structure and controlling method |
| CN105257503A (en) * | 2015-10-22 | 2016-01-20 | 广州市设计院 | Same-lift and same-flow combined water pump structure used for air conditioner system and control method |
| CN108629112A (en) * | 2018-05-02 | 2018-10-09 | 苏州爱博斯蒂低碳能源技术有限公司 | A method of pump head is obtained by valve state |
| CN108895605A (en) * | 2018-08-01 | 2018-11-27 | 河南诺节能科技有限公司 | The vari- able flow control device of cooling system |
| CN109357560A (en) * | 2018-11-07 | 2019-02-19 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of closed-type circulating cooling water system and method for commissioning |
| CN112413815A (en) * | 2020-11-11 | 2021-02-26 | 珠海格力电器股份有限公司 | Air conditioning system |
-
2014
- 2014-04-11 CN CN201420173756.1U patent/CN203810598U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105221384A (en) * | 2015-10-22 | 2016-01-06 | 广州市设计院 | Air-conditioning system identical lift different flow Combined water pump structure and controlling method |
| CN105221385A (en) * | 2015-10-22 | 2016-01-06 | 广州市设计院 | Air-conditioning system different lift different flow Combined water pump structure and controlling method |
| CN105257503A (en) * | 2015-10-22 | 2016-01-20 | 广州市设计院 | Same-lift and same-flow combined water pump structure used for air conditioner system and control method |
| CN108629112A (en) * | 2018-05-02 | 2018-10-09 | 苏州爱博斯蒂低碳能源技术有限公司 | A method of pump head is obtained by valve state |
| CN108629112B (en) * | 2018-05-02 | 2021-12-24 | 苏州爱博斯蒂低碳能源技术有限公司 | Method for acquiring water pump lift through valve state |
| CN108895605A (en) * | 2018-08-01 | 2018-11-27 | 河南诺节能科技有限公司 | The vari- able flow control device of cooling system |
| CN109357560A (en) * | 2018-11-07 | 2019-02-19 | 中国能源建设集团浙江省电力设计院有限公司 | A kind of closed-type circulating cooling water system and method for commissioning |
| CN112413815A (en) * | 2020-11-11 | 2021-02-26 | 珠海格力电器股份有限公司 | Air conditioning system |
| CN112413815B (en) * | 2020-11-11 | 2021-10-26 | 珠海格力电器股份有限公司 | Air conditioning system |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20140903 |
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| CX01 | Expiry of patent term |