CN102748802A - Variable-differential-pressure energy-saving device of circulating pump - Google Patents
Variable-differential-pressure energy-saving device of circulating pump Download PDFInfo
- Publication number
- CN102748802A CN102748802A CN2012101269567A CN201210126956A CN102748802A CN 102748802 A CN102748802 A CN 102748802A CN 2012101269567 A CN2012101269567 A CN 2012101269567A CN 201210126956 A CN201210126956 A CN 201210126956A CN 102748802 A CN102748802 A CN 102748802A
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- circulating pump
- water supply
- backwater
- differential
- electricity
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Abstract
The invention relates to a variable-differential-pressure energy-saving device of a circulating pump. The variable-differential-pressure energy-saving device comprises an outdoor temperature sensor, an electricity-saving controller, a frequency converter, a differential pressure generator, the circulating pump, a circulating pump water return end pressure transmitter, a circulating pump water supply end pressure transmitter and a water supply and return parameter display screen. The variable-differential-pressure energy-saving device of the circulating pump only adopts outdoor air temperature to control the water supply and return pressure difference of the circulating pump, the pressure difference is changed with the outdoor air temperature and the pressure difference is enabled to reach required proper pressure difference to guarantee the required flow of a system; at the same time, the water supply and return parameter display screen displays the current required water supply temperature, a heat source follows up in time and the water is supplied according to the water temperature; and the required flow is combined with the required water supply temperature, the room temperature of households satisfies requirements of regulations and the power consumption of the water circulating pump is greatly reduced.
Description
Technical field
The present invention relates to a kind of central heating system, relate in particular to the energy-conservation heating installation of circulating pump transformation difference.
Background technology
" quality-flow comprehensive adjustment " of central heating system derives multiple regulation and control strategy and method at present.This regulation and control strategy has been practiced thrift the circulating pump power consumption to some extent with method, and resident family's room temperature also obtains in various degree satisfied, but fractional energy savings is lower, and the less than normal and thermal hysteresis of flow also exists.
Summary of the invention
The technical problem that the present invention will solve is how only to carry out heating-on-demand according to ambient temperature, accomplishes to satisfy user's heating requirement, simultaneously energy savings.
The technical scheme that the present invention adopted is: a kind of circulating pump transformation difference energy saver; Comprise outdoor temperature sensor, electricity-saving controller, frequency converter, differential pressure generating device, circulating pump, circulating pump backwater end pressure transmitter, circulating pump water supply end pressure transmitter, supply backwater parameter display screen, the differential pressure generating device is electrically connected with circulating pump backwater end pressure transmitter with circulating pump water supply end pressure transmitter respectively; Frequency converter is electrically connected with differential pressure generating device, circulating pump and electricity-saving controller respectively; Electricity-saving controller also is electrically connected with supplying backwater parameter display screen and outdoor temperature sensor respectively.
Pressure transmitter and next actual confession backwater pressure reduction
input converter of circulating pump backwater end pressure transmitter collection that the differential pressure generating device supplies water circulating pump to hold; Meanwhile; Only according to the outside air temperature of outdoor air temperature sensor, the due pressure reduction of current confession backwater
that calculates is also in the input converter by electricity-saving controller; Frequency converter sends control instruction to circulating pump after relatively; Control circulating pump rotating speed makes pump end pressure reduction for
.
Electricity-saving controller only calculates the water supply water temperature
of needs this moment according to the outside air temperature of outdoor temperature sensor, be presented to supply on the backwater parameter display screen.
Circulating pump supplies the required pressure reduction
that should have of backwater end to calculate by following (1), (2) formula, at first sets an outside air temperature value
.
When outside air temperature
is low when
()
When outside air temperature
is higher when
()
In above-mentioned two formulas; As far as set heating system;
,
,
,
are preset parameter, and only outside air temperature
is a variable.
Supply water temperature
; Being presented at the value
that supplies the supply water temperature on the backwater parameter display screen is calculated by following (3), (4) two formulas
When outside air temperature
is low when
()
（3）
When outside air temperature
is higher when
()
In above-mentioned [3], [4] two formulas; As far as set heating system;
,
,
,
,
,
are preset parameter, and only outside air temperature
is a variable.
The invention has the beneficial effects as follows: circulating pump transformation difference battery saving arrangement of the present invention only adopts outside air temperature
control circulating pump to supply backwater pressure reduction; This pressure reduction is changed with outside air temperature; Making this pressure reduction reach required should have pressure reduction, has guaranteed the flow that system is required thus; Simultaneously, supply backwater parameter display screen to demonstrate current required water supply water temperature down, thermal source in time follows up, and supplies water by this water temperature; Required flow combines with required water supply water temperature; Resident family's room temperature just reaches code requirement conserve water circulating pump power consumption significantly again; The continuous 30 years meteorological datas of year having announced with nineteen fifty-one～1980 calculate, and the heating system that the present invention accumulates no natural pressure head is with regard to main 20 big cities, the whole nation; At the relative discharge minimum is 70% o'clock, circulating pump power saving rate average out to 56.1%; At the relative discharge minimum is 60% o'clock, circulating pump power saving rate average out to 61.8%.
Description of drawings
Fig. 1 is a circulating pump transformation difference energy saver structural representation of the present invention
Wherein (1), outdoor temperature sensor, (2), electricity-saving controller, (3), frequency converter; (4), the differential pressure generating device, (5), circulating pump, (6), thermal source; (7), user; (8), circulating pump backwater end pressure transmitter, (9), circulating pump water supply end pressure transmitter, (10), supply backwater parameter display screen.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further
Its sketch map is as shown in Figure 1, and it comprises (1), outdoor temperature sensor, (2), electricity-saving controller; (3), frequency converter, (4), differential pressure generating device, (5), circulating pump; (6), thermal source, (7), user, (8), circulating pump backwater end pressure transmitter; (9), circulating pump water supply end pressure transmitter, (10), supply backwater parameter display screen etc.
Differential pressure generating device (4) is respectively with circulating pump backwater end pressure transmitter (8), be electrically connected with circulating pump water supply end pressure transmitter (9); Frequency converter (3) is electrically connected with differential pressure generating device (4), circulating pump (5) and electricity-saving controller (2) respectively; Electricity-saving controller (2) also is electrically connected with supplying backwater parameter display screen (10), differential pressure generating device (4) and outdoor temperature sensor (1) respectively.
Among
Fig. 1;
is the gauge pressure of circulating pump (5) water supply end pressure transmitter (9);
is the gauge pressure of circulating pump (5) backwater end pressure transmitter (8); Poor
of the two is the actual pressure differential that circulating pump (5) supplies the backwater end, and differential pressure generating device (4) is with on this actual pressure differential input converter (3) and the electricity-saving controller (2); Simultaneously electricity-saving controller (2) also according to outdoor temperature sensor (1) adopt outside air temperature
calculate the confession backwater end due pressure reduction
of circulating pump (5) under this temperature
, and also with in its input converter (3); The two analyzes
,
in frequency converter (3) relatively; Frequency converter (3) sends instruction afterwards; The rotating speed of control circulating pump (5); Make circulating pump supply backwater end pressure reduction, guarantee the required flow of heating system for
.
In said process; Electricity-saving controller (2) also according to outdoor temperature sensor (1) adopt outside air temperature
; Calculate the water supply water temperature
that heating system needs at this moment; And be presented on the confession backwater parameter display screen (10); Prompting or control thermal source in time follow up; Supply water by this water temperature; Required flow combines with required water supply water temperature, not only makes room temperature reach code requirement but also practiced thrift the circulating pump power consumption significantly.
Claims (3)
1. circulating pump transformation difference energy saver; It is characterized in that: comprise outdoor temperature sensor, electricity-saving controller, frequency converter, differential pressure generating device, circulating pump, circulating pump backwater end pressure transmitter, circulating pump water supply end pressure transmitter, supply backwater parameter display screen, the differential pressure generating device is electrically connected with circulating pump backwater end pressure transmitter with circulating pump water supply end pressure transmitter respectively; Frequency converter is electrically connected with differential pressure generating device, circulating pump and electricity-saving controller respectively; Electricity-saving controller also is electrically connected with supplying backwater parameter display screen and outdoor temperature sensor respectively.
2. circulating pump transformation difference energy saver according to claim 1 is characterized in that: pressure transmitter and the next actual confession backwater pressure reduction input converter of circulating pump backwater end pressure transmitter collection that the differential pressure generating device supplies water circulating pump to hold; Meanwhile, only according to the outside air temperature of outdoor air temperature sensor, the due pressure reduction of current confession backwater that calculates is also in the input converter by electricity-saving controller; Frequency converter sends control instruction to circulating pump after relatively, control circulating pump rotating speed.
3. circulating pump transformation difference energy saver according to claim 1 is characterized in that: electricity-saving controller only calculates the water supply water temperature of needs this moment according to the outside air temperature of outdoor temperature sensor, is presented to supply on the backwater parameter display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210126956.7A CN102748802B (en) | 2012-04-27 | 2012-04-27 | Variable-differential-pressure energy-saving device of circulating pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210126956.7A CN102748802B (en) | 2012-04-27 | 2012-04-27 | Variable-differential-pressure energy-saving device of circulating pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102748802A true CN102748802A (en) | 2012-10-24 |
| CN102748802B CN102748802B (en) | 2015-06-24 |
Family
ID=47029194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210126956.7A Active CN102748802B (en) | 2012-04-27 | 2012-04-27 | Variable-differential-pressure energy-saving device of circulating pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102748802B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610052A (en) * | 2015-10-23 | 2017-05-03 | 北京建筑大学 | A constant-temperature difference and variable-flow hydraulic equilibrium adjusting method and system |
| CN111396298A (en) * | 2020-03-26 | 2020-07-10 | 河南理工大学 | Circulating water pump active and passive frequency conversion combined control method based on pressure difference set value change |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450829A (en) * | 1982-09-29 | 1984-05-29 | Morita Deen I | Water saving system |
| CN2716761Y (en) * | 2004-04-02 | 2005-08-10 | 天津力源永春科技发展有限公司 | Intellectualized controller for heat exchanging machine set |
| CN201606968U (en) * | 2010-02-10 | 2010-10-13 | 山东科技大学 | Weather compensation frequency conversion control device for heating |
| CN101975418A (en) * | 2010-11-25 | 2011-02-16 | 北京华通兴远供热节能技术有限公司 | Temperature difference type flow control system of secondary heating pipe network and control method thereof |
| CN202066093U (en) * | 2011-04-15 | 2011-12-07 | 北京清荣亿源科技有限公司 | Heat exchange system |
-
2012
- 2012-04-27 CN CN201210126956.7A patent/CN102748802B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450829A (en) * | 1982-09-29 | 1984-05-29 | Morita Deen I | Water saving system |
| CN2716761Y (en) * | 2004-04-02 | 2005-08-10 | 天津力源永春科技发展有限公司 | Intellectualized controller for heat exchanging machine set |
| CN201606968U (en) * | 2010-02-10 | 2010-10-13 | 山东科技大学 | Weather compensation frequency conversion control device for heating |
| CN101975418A (en) * | 2010-11-25 | 2011-02-16 | 北京华通兴远供热节能技术有限公司 | Temperature difference type flow control system of secondary heating pipe network and control method thereof |
| CN202066093U (en) * | 2011-04-15 | 2011-12-07 | 北京清荣亿源科技有限公司 | Heat exchange system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106610052A (en) * | 2015-10-23 | 2017-05-03 | 北京建筑大学 | A constant-temperature difference and variable-flow hydraulic equilibrium adjusting method and system |
| CN106610052B (en) * | 2015-10-23 | 2022-06-07 | 北京建筑大学 | Hydraulic balance adjusting method and system for isothermal-difference variable flow |
| CN111396298A (en) * | 2020-03-26 | 2020-07-10 | 河南理工大学 | Circulating water pump active and passive frequency conversion combined control method based on pressure difference set value change |
| CN111396298B (en) * | 2020-03-26 | 2021-07-23 | 河南理工大学 | Circulating water pump active and passive frequency conversion combined control method based on pressure difference set value change |
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| Publication number | Publication date |
|---|---|
| CN102748802B (en) | 2015-06-24 |
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Address after: Room 1407, International Energy Center, 100 Yingjie Street, Wanberlin District, Taiyuan City, Shanxi Province, 030024 Patentee after: Taiyuan Dasifang Energy Conservation and Environmental Protection Co.,Ltd. Address before: Room 1407, international energy center, No. 100, Yingze West Street, Taiyuan City, Shanxi Province Patentee before: TAIYUAN SQUARE ENERGY-SAVING AND ENVIRONMENTAL Co.,Ltd. |