CN103398409A - Heat supply system utilizing return water - Google Patents
Heat supply system utilizing return water Download PDFInfo
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- CN103398409A CN103398409A CN2013103418876A CN201310341887A CN103398409A CN 103398409 A CN103398409 A CN 103398409A CN 2013103418876 A CN2013103418876 A CN 2013103418876A CN 201310341887 A CN201310341887 A CN 201310341887A CN 103398409 A CN103398409 A CN 103398409A
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Abstract
The invention discloses a heat supply system utilizing return water. The heat supply system utilizing the return water comprises a return-supply system and a return-return system. According to the return-supply system, the return water in a heat supply pipeline is pressurized through a circulation water pump and then supplies heat to a heating load, the return water after heating returns to supply water in the heat supply pipeline, a continuous thermodynamic cycle is achieved, and the purpose of heat supply is achieved. According to the return-return system, the return water in the heat supply pipeline is pressurized through the circulation water pump and then supplies heat to the heating load, and the return water after heating returns to the return water in the heat supply pipeline. On the basis of not affecting original normal heat supply, the heat supply return water is reused, part of heat exchange stations can be eliminated, a plurality of operation methods are provided, and the requirements of different loads and different temperatures are met, many problems about economy, technology and operation are effectively solved, and heat supply is achieved for some users lack of heat supply conditions.
Description
Technical field
The present invention relates to a kind of backwater heating system of utilizing.
Background technology
Utilize the backwater heating system to be applied to heat supply, heating industry.The central heating mode has multiple both at home and abroad: as hot water direct-furnish (supply water temperature is lower than 95 ℃), vapour-water heat exchange, water-water heat exchange, injector heat supply, mixed water heat supply, single tube heat supply etc., wherein the mode of water-water heat exchange indirect heating is applied wider.In order to improve the heating agent conveying capacity of heating network, strengthen heat supplying scale, improve economy, be all generally to carry high-temperature-hot-water (supply and return water temperature 110-150 ℃, backwater 70-90 ℃) by heating plant by a heat supply network.If use high temperature water direct heating heating, the sealing paint of heating facility, seal can very fast ageing failures, cause heating system all to paralyse, and must reinstall by complete removal, if floor heating heating, system will all be scrapped.In case the heating facility is let out leak, to cause the high-temperature water vaporization to cause the even critical life of personal scald accident, China expressly forbid high-temperature water directly the system of entering carry out heating, high-temperature water must be after the heat exchange station heat exchange becomes water at low temperature (supply water temperature is lower than 95 ℃), then the heating system heat supply by secondary heat supply network thermotropism user.
The heating system more complicated with water-water heat exchange of this routine.Building heat exchange station needs very large construction area, and equipment is various, technical sophistication, and electric load is higher, also need feedwater, draining auxiliary facility, so construction costs is very high, and operating cost is also high.Because some hot user does not possess above-mentioned condition, and shortage of funding, can't meet the requirement of building a station, heating network excessively also can only " be hoped heat heave a sigh " in front of the door and can't enjoy heat supply heating.In addition, along with the popularization and application of the heat-supplying modes such as air-conditioning system and floor heating, the method for operation that traditional heat exchange station is single can't meet the instructions for use of heterogeneity, different temperatures thermic load.For built old heat exchange station, it is also more difficult wanting to increase and adjusting thermic load.
At present, China's heating, heating parameter commonly used is:
A hot water net: supply water temperature 110-150 ℃, backwater 70-90 ℃:
The second heat network of rivers: supply water temperature 80-95 ℃, backwater 60-70 ℃;
Radiator heating: supply water temperature 80-95 ℃, backwater 60-70 ℃;
Air-conditioning heating: supply water temperature 55-60 ℃, backwater 40-45 ℃;
Floor heating heating: supply water temperature 50-55 ℃, backwater 40-45 ℃;
As can be seen from the above data, the return water temperature of hot water net, the second heat network of rivers, radiator heating is at 60-95 ℃, very the heat supply backwater of high-temperature is not fully used, but thermal source will be got back to or heat exchange station reheats, heating facility is not fully exerted, and heat energy is not fully used.Mostly adopt at present " the large flow of low temperature ", " the large flow of the little temperature difference " irrational method of operation, cause that construction costs is high, power consumption is high, operating cost is high, the energy-conservation space of taping the latent power of national heating industry is huge.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of backwater heating system of utilizing.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of backwater heating system of utilizing comprises back-supplies system and returns-return system; Return-for system be with the backwater of heat supply pipeline by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating turns back in the water supply of heat supply pipeline, realizes continuous thermodynamic cycle, reaches the heat supply purpose; Return-return system and be the backwater of heat supply pipeline by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating turns back in the backwater of heat supply pipeline again.
As preferably, return-for system, be to utilize high temperature one-level or secondary network backwater, by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating returns to high Wembledon tennis open competition water system.
, as further preferred, return-for system, comprise high temperature one-level or secondary network water return pipeline, high temperature one-level or secondary network water supply line, water circulating pump, heating load; Described high temperature one-level or secondary network water return pipeline are connected with heating load by water circulating pump, and heating load is connected with high temperature one-level or secondary network water supply line.
Preferred as another, returning-return system is to utilize heat exchanger or heat exchange station backwater, and the heating backwater after heat supply turns back to former return water system.
As further preferred, the system of returning-return comprises heat exchanger or heat exchange station water return pipeline, high temperature one-level or secondary network water return pipeline, water circulating pump, heating load; Described heat exchanger or heat exchange station water return pipeline are connected with heating load by water circulating pump, and heating load is connected with high temperature one-level or secondary network water return pipeline.
The invention has the beneficial effects as follows:
The present invention design utilize the backwater heating system, on the basis that does not affect original normal heat supply, the heat supply backwater is reused, can cancel the part heat exchange station, the multiple method of operation is provided, meet the requirement of different load, different temperatures, effectively solved many difficult problem of economy, technology, operation, make the user who does not possess for heat condition realize heat supply.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is that the present invention utilizes the backwater heating system of backwater heating system embodiment and conventional water-water heat exchange to use simultaneously main system figure.
Fig. 2 is that the present invention utilizes returning-confession system actual disposition figure of backwater heating system embodiment.
Fig. 3 is that the present invention utilizes the system of returning-return of backwater heating system embodiment to utilize the heat exchanger backwater to carry out secondary or three heating system figure.
Fig. 4 is the marginal data of Fig. 2, Fig. 3.
Fig. 5 is the electrical control allocation plan that the present invention utilizes backwater heating system embodiment.
The specific embodiment
One, several allocation plans of backwater heating system
Fig. 1 is that main system figure is used in backwater heating system and conventional water-water heat exchange simultaneously.
1, (A) scheme in Fig. 1 is conventional water-water heat exchange station heating system, repeats no more.
2, (B) scheme in Fig. 1 is to utilize high temperature one-level or secondary network backwater, and the heating backwater after heat supply returns to " returning-supply system " of high Wembledon tennis open competition water system, and Fig. 2 is back-supplies the detailed configuration of system.
Operation principle is as follows: the supply water temperature that the return water temperature of the high-temperature-hot-water net of water-water heat exchange (or high-temperature-hot-water net of direct-furnish) and heating system require is suitable, so enter heating system R after pressurizeing by water circulating pump with the heating agent backwater H of hot water net, return the water supply G of hot water net after heating agent heat release heating, realize continuous thermodynamic cycle.The heating agent circulation process is as follows: the backwater H → water circulating pump of a hot water net → become heating system water supply g → enter system heat release heating R → become heating system backwater h → the get back to water supply G of a hot water net.Control valve J (can establish electric control valve regulates automatically) is used for mixing the different blended water yield, to regulate different supply water temperatures.It is online that " return-for system " can be connected on the one-level high-temperature-hot-water, also can be connected on each secondary high-temperature-hot-water online, also can use in each heat exchange station, after hydraulic regime and heating power condition calculating, meets instructions for use and do not affect original normal heat supply and get final product." return-for system " and thoroughly broken water and heat provision, backwater returns to traditional method of operation of thermal source.
3, (C) scheme in Fig. 1 is to utilize heat exchanger or heat exchange station backwater, and the heating backwater after heat supply turns back to " returning-return system " of former return water system.Detailed configuration is seen Fig. 3.
(1) a in Fig. 3, utilize once total backwater heat supply of heat exchanger.The heating power flow process is as follows: primary water from the E1 point draw → F1 → water circulating pump two → F2 → to floor heating load heat supply R2 → become heating system backwater is through F3 → F4 → get back to the backwater E2 point of a hot water net, completes thermodynamic cycle.Control valve Fh can regulate the flow-rate ratio of primary water and R2, and F5 can regulate different supply water temperatures.
(2) b in Fig. 3, utilize the heat supply of radiator heating system backwater.The heating power flow process is as follows: the outlet E3 → F6 of backwater → water circulating pump one of heating load R1 → water circulating pump three → F7 → to air-conditioning or floor heating load R3 heat supply → heating backwater, through F8 → get back to heat exchanger 2 backwater E4 points, completes thermodynamic cycle.If the lift of water circulating pump one can meet the working condition requirement of thermic load R3, water circulating pump three can be cancelled, by the F9 direct-furnish.
(3) c in Fig. 3, utilize the heat supply of heat exchanger primary water.The heating power flow process is as follows: and heat exchanger primary water E5 draws → and F10 → water circulating pump four → F11 → heating supplies water to air-conditioning or radiator load R4 heat supply → heating backwater through F12 → F13 → get back to heat exchanger primary water E6, completes thermodynamic cycle.F14 is used for mixing the different blended water yield, to regulate different supply water temperatures.
Two, the control of backwater heating system and adjusting
1, need temperature according to heat source temperature and heating, (if temperature can meet system requirements, this adjusting can be omitted to mix the water adjusting with mixed water valve.The improper operation just of temperature once regulated, and need not transfer later again), make heat medium temperature adapt to the temperature requirement of different heating systems (as radiator, floor heating, fan coil or other heating system).
2, frequency conversion and PLC automatic control are regulated.
As shown in Figure 5, temp autocontrolled employing dual mode: outside air temperature penalty method and indoor temperature are directly controlled method.
(1) outside air temperature penalty method: temp probe t2 is arranged on outdoor correct position, and the signal back PIC system of different temperature is controlled the aperture of mixing water motor-driven valve M by the temperature curve that sets in advance, reach the purpose by temperature automatic controlling water supplying temperature.This method is that rule of thumb temperature curve carries out the method for indirect regulation room temperature, can not directly control constantly the height of room temperature.
(2) indoor temperature is directly controlled method: water circulating pump carries out VFC by the Multifunction electro-controlled case, temp probe t1 is placed in a typical heating room, when room temperature during higher than design temperature, temp probe t1 signal feedback is to electric cabinet, control water pump D frequency conversion fall-back, because reducing room temperature, the heating system quantity of circulating water can descend gradually (because the building thermal inertia is larger, room temperature changes can be too not sensitive), when room temperature during lower than the design temperature scope, water pump recovers normal operation, so repeatedly, indoor temperature is remained in setting range.
3, hommization adjusting and energy-saving run: digital climator T is placed in hot user's night shift room, is used for room temperature is set, and, to meet instructions for use, improves human comfort.Some places are as public places such as office, school, markets, night nobody the time can turn down room temperature, realize the cooling energy-saving operation.
The present embodiment be applicable to every utilize heating system (steam power plant, boiler room, heat exchange station, heat exchanger, high-temperature-hot-water net once reach secondary pipe network, heating system pipe network etc., and be not limited to this scope) in backwater to the thermic load heat supply, then get back to the method for operation of heating system water return pipeline or water supply line.
The backwater heat supply process of the present embodiment is overturned tradition, is broken the normal procedure, and is a kind of brand-new heat supply running pattern, is the blank technology of domestic and international heating industry.For increasing heat-supplying mode, improving heat supply process, take full advantage of heat energy and original heating facility, to new construction and old station energy-conservationly tap the latent power, increase area of heat-supply service, increasing economic efficiency has great significance.
Above-described embodiment of the present invention, do not form the restriction to protection domain of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection domain of the present invention.
Claims (5)
1. utilize the backwater heating system, it is characterized in that:
Comprise back-supply system and/or return-return system; Described time-for system be with the backwater of heat supply pipeline by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating turns back in the water supply of heat supply pipeline, realizes continuous thermodynamic cycle, reaches the heat supply purpose; Described time-the system of returning be with the backwater of heat supply pipeline by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating turns back in the backwater of heat supply pipeline again.
2. the backwater heating system of utilizing according to claim 1 is characterized in that: described time-for system, be to utilize high temperature one-level or secondary network backwater, by the water circulating pump backward heating load heat supply of pressurizeing, the backwater after heating returns to high Wembledon tennis open competition water system.
3. the backwater heating system of utilizing according to claim 2 is characterized in that: described time-for system, comprise high temperature one-level or secondary network water return pipeline, high temperature one-level or secondary network water supply line, water circulating pump, heating load; Described high temperature one-level or secondary network water return pipeline are connected with heating load by water circulating pump, and heating load is connected with high temperature one-level or secondary network water supply line.
4. the backwater heating system of utilizing according to claim 1 is characterized in that: described time-to return system be to utilize heat exchanger or heat exchange station backwater, the heating backwater after heat supply turns back to former return water system.
5. the backwater heating system of utilizing according to claim 4 is characterized in that: the described time-system of returning comprises heat exchanger or heat exchange station water return pipeline, high temperature one-level or secondary network water return pipeline, water circulating pump, heating load; Described heat exchanger or heat exchange station water return pipeline are connected with heating load by water circulating pump, and heating load is connected with high temperature one-level or secondary network water return pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310341887.6A CN103398409B (en) | 2013-08-02 | 2013-08-02 | Utilize backwater heating system |
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| CN201310341887.6A CN103398409B (en) | 2013-08-02 | 2013-08-02 | Utilize backwater heating system |
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| CN103398409A true CN103398409A (en) | 2013-11-20 |
| CN103398409B CN103398409B (en) | 2016-12-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912914A (en) * | 2014-04-22 | 2014-07-09 | 珠海格力电器股份有限公司 | Floor heating control method |
| CN109340902A (en) * | 2018-10-17 | 2019-02-15 | 余宝法 | A kind of adjustment type water stream injection pump is for heat balance system and its balance method |
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| JP2005127621A (en) * | 2003-10-24 | 2005-05-19 | Matsushita Electric Ind Co Ltd | Hot water utilizing device |
| CN200996678Y (en) * | 2007-01-15 | 2007-12-26 | 李铁章 | Stepped reducting heat supplier |
| CN102269442A (en) * | 2011-07-13 | 2011-12-07 | 清华大学 | Heating system utilizing heat pump technology to improve heating capacity of central heating pipe network |
| CN202145018U (en) * | 2011-07-13 | 2012-02-15 | 清华大学 | Heat supply system for improving heat supply capacity of centralized heat supply tube network by heat pump technology |
| CN202171276U (en) * | 2011-08-05 | 2012-03-21 | 唐山市热力总公司 | Stepped heat exchange system of a centralized heat-supply primary heat network according to different heating methods |
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2013
- 2013-08-02 CN CN201310341887.6A patent/CN103398409B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005127621A (en) * | 2003-10-24 | 2005-05-19 | Matsushita Electric Ind Co Ltd | Hot water utilizing device |
| CN200996678Y (en) * | 2007-01-15 | 2007-12-26 | 李铁章 | Stepped reducting heat supplier |
| CN102269442A (en) * | 2011-07-13 | 2011-12-07 | 清华大学 | Heating system utilizing heat pump technology to improve heating capacity of central heating pipe network |
| CN202145018U (en) * | 2011-07-13 | 2012-02-15 | 清华大学 | Heat supply system for improving heat supply capacity of centralized heat supply tube network by heat pump technology |
| CN202171276U (en) * | 2011-08-05 | 2012-03-21 | 唐山市热力总公司 | Stepped heat exchange system of a centralized heat-supply primary heat network according to different heating methods |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103912914A (en) * | 2014-04-22 | 2014-07-09 | 珠海格力电器股份有限公司 | Floor heating control method |
| CN103912914B (en) * | 2014-04-22 | 2016-10-05 | 珠海格力电器股份有限公司 | A kind of control method of floor heating |
| CN109340902A (en) * | 2018-10-17 | 2019-02-15 | 余宝法 | A kind of adjustment type water stream injection pump is for heat balance system and its balance method |
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| Publication number | Publication date |
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| CN103398409B (en) | 2016-12-28 |
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