CN212901685U - Temperature difference unit - Google Patents
Temperature difference unit Download PDFInfo
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- CN212901685U CN212901685U CN202021990595.7U CN202021990595U CN212901685U CN 212901685 U CN212901685 U CN 212901685U CN 202021990595 U CN202021990595 U CN 202021990595U CN 212901685 U CN212901685 U CN 212901685U
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Abstract
The utility model relates to a temperature difference unit, which comprises a first heat exchanger unit, a second heat exchanger unit and a third heat exchanger unit; the primary water supply pipeline is sequentially connected with the first heat exchange unit and the third heat exchange unit, the primary water return pipeline is sequentially connected with the third heat exchange unit, the first heat exchange unit and the second heat exchange unit, and the secondary water supply pipeline is sequentially connected with the first heat exchange unit, the third heat exchange unit and the second heat exchange unit. Utilize first heat exchanger group and second heat exchanger group to supply water with the low zone secondary and additionally carried out twice intensifies to reduced the circulation flow of secondary water among the district heat exchange station, made the heat exchange station reduce to the demand of primary water circulation flow, optimized the pipe network, promoted conveying efficiency, and then reduced the heat supply cost.
Description
Technical Field
The utility model relates to a civilian heating equipment field specifically is a temperature difference unit.
Background
In northern areas, centralized heat supply is adopted, primary hot water is generated by a heat supply unit and enters a community, and the primary hot water is converted into secondary water through a community heat exchange station to supply heat for buildings in the community. In the mode, when the heat demand is large in winter, the secondary backwater temperature is low, namely the temperature of the secondary water returned in the residential building is low, so that a heat supply unit needs to increase the flow of primary hot water to meet the heating demand of residents, and the heat supply cost is increased.
SUMMERY OF THE UTILITY MODEL
One or more embodiments provide the following technical solutions:
a temperature difference unit comprises a first heat exchanger unit, a second heat exchanger unit and a third heat exchanger unit;
the primary water supply pipeline is sequentially connected with the first heat exchange unit and the third heat exchange unit, the primary water return pipeline is sequentially connected with the third heat exchange unit, the first heat exchange unit and the second heat exchange unit, and the secondary water supply pipeline is sequentially connected with the first heat exchange unit, the third heat exchange unit and the second heat exchange unit.
The third heat exchanger unit comprises a third low-zone heat exchanger unit for heat exchange of a low floor and a third high-zone heat exchanger unit for heat exchange of a high floor; the secondary water supply pipeline comprises a low-region secondary water supply pipeline for supplying heat to the low floor and a high-region secondary water supply pipeline for supplying heat to the high floor.
The primary water supply pipeline is connected with the third low-region heat exchange unit through the first heat exchange unit, and the water return pipeline of primary side water is sequentially connected with the third low-region heat exchange unit, the first heat exchange unit and the second heat exchange unit.
The low-region secondary water supply pipeline is sequentially connected with the first heat exchanger unit, the third heat exchanger unit and the second heat exchanger unit.
The primary water supply pipeline is also connected with the regulating valve group and the third high-area heat exchange unit through the first heat exchange unit.
And a water supply pipeline and a water return pipeline on the secondary side of the high area are respectively connected with a third high area heat exchanger unit.
The primary water supply is connected with the first heat exchange unit to serve as power for driving a heat exchange unit generator, primary backwater heat is transmitted to low-region secondary water supply passing through the unit, the low-region secondary water supply is heated for the first time, and meanwhile, the primary backwater is cooled.
The primary water supply passes through the third low-region heat exchanger unit, and transfers heat to the low-region secondary water supply passing through the third low-region heat exchanger unit, so that the low-region secondary water supply is heated for the second time.
The primary backwater is led out from the third low-region heat exchange unit and the third high-region heat exchange unit, returns to the first heat exchange unit, and transfers heat to the low-region secondary water supply passing through the unit, so that the primary backwater is cooled.
The primary backwater transfers heat to the secondary water supply of the low region through the second heat exchange unit, so that the secondary water supply of the low region is heated for the third time.
And the low-region secondary water supply after the third temperature rise enters a heating facility in a low-floor resident home to complete heating, is converted into low-region secondary return water and returns to the inlet of the first heat exchange unit, and the circulation is executed again.
And the secondary water supply of the high area enters a heating facility in the resident home of the high floor to complete heating after being heated by the heat exchange unit of the third high area, and returns to the heat exchange unit of the third high area again after being cooled to realize circulation.
The regulating valve group is positioned on a primary water supply pipeline between the first heat exchanger unit and the third high-region heat exchanger unit and used for regulating the primary water supply flow entering the third high-region heat exchanger unit and ensuring the balance of the water supply temperature of the high region and the low region.
Still have water mixing unit, install in the heating power of building unit is indoor, and water mixing unit is connected with the secondary water supply pipe and the secondary return water pipeline of third low district heat exchanger group export, through the muddy water yield of electric control valve and muddy water pump automatic adjustment secondary water supply and secondary return water, satisfies indoor temperature, further reduces the secondary water circulation flow.
The above one or more technical solutions have the following beneficial effects:
utilize first heat exchanger group and second heat exchanger group to supply water with the low zone secondary and additionally carried out twice intensifies to reduced the circulation flow of secondary water among the district heat exchange station, made the heat exchange station reduce to the demand of primary water circulation flow, optimized the pipe network, promoted conveying efficiency, and then reduced the heat supply cost.
Drawings
The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without unduly limiting the scope of the invention.
Fig. 1 is a schematic structural diagram of a thermoelectric unit according to one or more embodiments of the present invention;
fig. 2 is a schematic structural diagram of a water mixing unit according to one or more embodiments of the present invention;
in fig. 1: 1. secondary side water in a low area; 2. primary side water; 3. secondary side water in a high area; 4. a first heat exchanger unit; 5. a third low-zone heat exchanger unit; 6. the third high-area heat exchanger unit: 7. a second heat exchanger unit; 8. an adjusting valve group;
in fig. 2: 801. a ball valve; 802. a dynamic balance type electric control valve; 803. a manual balancing valve; 804. a water circulating pump; 805. a check valve; 806. a filter: 807. an ECL climate compensator; 808. a control cabinet; 809. an invasive temperature sensor: 810. an outdoor temperature sensor; 811. a thermometer and a pressure gauge.
Detailed Description
The following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The noun explains:
primary water: the heat supply boiler is also called primary side water.
Secondary water: the district heat exchange station provides hot water for each building in the district, and the hot water comprises secondary water supply and secondary return water. The secondary water supply is changed into secondary return water after entering the floor heating or hanging the floor heating in each family in the building, and returns to the district heat exchange station to be heated again by the primary water, which is also called secondary side water.
When the building is high, the secondary side water is divided into low-floor supply water and return water and high-floor supply water and return water, namely the supply water and the return water on the low-zone side and the supply water and the return water on the high-zone side.
Low district heat exchanger unit and high district heat exchanger unit: the heat exchange unit for realizing heat transfer by primary side water and secondary side water adopts a plate heat exchanger in the industry because of water-water heat exchange. And for the low floors, low-zone heat exchange units are adopted, and the corresponding high floors are high-zone heat exchange units. The boundary point of the primary side water supply and return in the attached drawing is bounded by the plate heat exchanger.
As described in the background art, under the condition of a large heating demand in winter, the temperature of secondary return water returned by a residential building is low, and the temperature or flow of secondary water supply needs to be increased to ensure the heating demand.
Example 1:
as shown in fig. 1, a temperature difference unit comprises a first heat exchanger unit 4, a second heat exchanger unit 7 and a third heat exchanger unit;
the primary water supply pipeline is sequentially connected with the first heat exchange unit 4 and the third heat exchange unit, the primary water return pipeline is sequentially connected with the third heat exchange unit, the first heat exchange unit 4 and the second heat exchange unit 7, and the secondary water supply pipeline is sequentially connected with the first heat exchange unit 4, the third heat exchange unit and the second heat exchange unit 7;
the third heat exchanger set comprises a third low-zone heat exchanger set 5 for low-floor heat exchange and a third high-zone heat exchanger set 6 for high-floor heat exchange.
The secondary water supply pipeline comprises a low-region secondary water supply pipeline 1 for supplying heat to the low floors and a high-region secondary water supply pipeline 3 for supplying heat to the high floors.
A water supply pipeline of the primary side water 2 is connected with a third low-region heat exchange unit 5 through a first heat exchange unit 4, and a water return pipeline of the primary side water 2 is sequentially connected with the third low-region heat exchange unit 5, the first heat exchange unit 4 and a second heat exchange unit 7;
a water supply pipeline of secondary side water 1 is connected with a third low-region heat exchanger unit 5 through a first heat exchanger unit 4, and a water return pipeline of the secondary side water 1 is connected with the third low-region heat exchanger unit 5 and a second heat exchanger unit 7.
The water supply pipeline of the primary side water 2 is also connected with a regulating valve group 8 and a third high-area heat exchange unit 6 through a first heat exchange unit 4.
And a water supply pipeline and a water return pipeline of the secondary side water 3 in the high area are respectively connected with a heat exchanger unit 6 in the third high area.
The first heat exchanger unit 4 is a lithium bromide unit, and heat exchange is completed through processes of heat absorption, evaporation, condensation and heat release of lithium bromide serving as a working medium. The water supply of the primary side water 2 firstly enters a generator of the lithium bromide unit and then enters the evaporator to provide power for the generator of the lithium bromide unit, a part of heat in the return water of the primary side water 2 is transferred to the water supply of the low-region secondary side water 1 of the unit, the water supply of the low-region secondary side water 1 is heated for the first time, and the return water of the primary side water 2 is cooled at the same time.
The water supply of the primary side water 2 enters the third low-region heat exchanger unit 5 again, and heat is transferred to the water supply of the low-region secondary side water 1 passing through the third low-region heat exchanger unit 5, so that the secondary temperature rise of the water supply of the low-region secondary side water 1 is realized.
The return water of the primary side water 2 is led out by the third low-region heat exchange unit 5 and the third high-region heat exchange unit 6 and then becomes the return water of the primary side water 2. The return water of the primary side water 2 returns to the first heat exchange unit 4 (lithium bromide unit), and a part of heat of the return water of the primary side water 2 is transferred to the supply water of the secondary side water 1 in the low region through the lithium bromide unit which supplies power to the generator through the supply water of the primary side water 2, so that the return water of the primary side water 2 is cooled.
The second heat exchange unit 7 is a freon unit, and heat exchange is completed through the processes of freon heat absorption evaporation and condensation heat release as working media. The backwater of the primary side water 2 after temperature rise enters an evaporator of a second heat exchange unit 7 (Freon unit) for temperature reduction, and heat is transferred to the water supply of the secondary side water 1 of the low area through a condenser, so that the water supply of the secondary side water 1 of the low area realizes the third temperature rise. The return water of the primary side water 2 returns to the heat supply unit after being cooled.
And the water supply of the low-region secondary side water 1 after the temperature rise for three times enters a heating facility in the low-floor resident home to complete heating, and is converted into low-region secondary side return water to return to the inlet of the first heat exchange unit 4, and the circulation is executed again.
The high-area secondary side water 3 enters heating facilities in high-rise resident families after being heated up by the third high-area heat exchange unit 6 to complete heating, and returns to the third high-area heat exchange unit 6 again after being cooled down to realize circulation.
In present civilian heat transfer system, only have the process of above-mentioned second intensification usually, only shift the heat to secondary side water 1 by primary side water 2 through third low district heat exchanger unit 5 promptly, and this embodiment utilizes lithium bromide unit and freon unit to additionally carry out the process that twice heat shifted with low district secondary side water 1, thereby reduced the circulation flow of low district secondary side water 1 part in the secondary water in the district heat transfer station, and the total circulation flow of secondary water reduces the back, the demand to primary circulation flow will reduce, the pipe network has been optimized, the conveying efficiency has been promoted, and then the heating cost has been reduced.
The regulating valve group 8 is positioned on a water supply pipeline of the primary side water 1 between the first heat exchange unit 4 and the third high-region heat exchange unit 6, and is used for regulating the flow of the primary side water 2 entering the third high-region heat exchange unit 6 and ensuring the balance of the water supply temperature of the high region and the low region.
As shown in fig. 2, the water mixing unit is arranged in a heating power room of a building unit, the water mixing unit is connected with secondary water supply and secondary water return at the rear part of the third low-region heat exchange unit 5, the water mixing amount of the secondary water supply and the secondary water return is automatically adjusted through an electric adjusting valve and a water mixing pump, the indoor temperature is met, and the secondary water circulation flow of the heat exchange station is reduced.
The low-region secondary water supply pipeline is sequentially connected with a ball valve 801, a thermometer and a pressure gauge 811, a filter 806, a circulating water pump 804 and an invasive temperature sensor 809.
An intrusive temperature sensor 809, a dynamic balance type electric regulating valve 802, a manual balance valve 803, a thermometer and a pressure gauge 811 are sequentially connected to the low-zone secondary water return pipeline.
The low-region secondary water supply pipeline and the low-region secondary water return pipeline are connected through a check valve 805. Also provided are an ECL climate compensator 807, a control cabinet 808, and an outdoor temperature sensor 810.
The water mixing amount of secondary water supply and secondary water return is automatically adjusted through the electric adjusting valve and the water mixing pump, the indoor temperature is met, and the secondary water circulation flow of the heat exchange station is reduced.
Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.
Claims (10)
1. A temperature difference unit is characterized in that: the heat exchanger comprises a first heat exchanger unit, a second heat exchanger unit and a third heat exchanger unit;
the primary water supply pipeline is connected with the first heat exchanger unit and the third heat exchanger unit, the primary water return pipeline is sequentially connected with the third heat exchanger unit, the first heat exchanger unit and the second heat exchanger unit, and the secondary water supply pipeline is sequentially connected with the first heat exchanger unit, the third heat exchanger unit and the second heat exchanger unit.
2. The thermoelectric module of claim 1, wherein: the third heat exchanger unit comprises a third low-zone heat exchanger unit for heat exchange of a low floor and a third high-zone heat exchanger unit for heat exchange of a high floor; the secondary water supply pipeline comprises a low-region secondary water supply pipeline for supplying heat to the low floors and a high-region secondary water supply pipeline for supplying heat to the high floors.
3. The thermoelectric module of claim 1, wherein: the primary water supply pipeline is connected with a third low-region heat exchange unit through a first heat exchange unit; the primary water return pipeline is sequentially connected with the third low-region heat exchange unit, the first heat exchange unit and the second heat exchange unit; the low-region secondary water supply pipeline is sequentially connected with the first heat exchanger unit, the third heat exchanger unit and the second heat exchanger unit; and a water supply pipeline and a water return pipeline on the secondary side of the high area are respectively connected with a third high area heat exchanger unit.
4. A thermoelectric module as in claim 3 wherein: the primary water supply is connected with the first heat exchange unit to serve as power for driving the heat unit generator, primary backwater heat is transmitted to low-region secondary water supply passing through the unit, the low-region secondary water supply is heated for the first time, and meanwhile, the primary backwater is cooled.
5. A thermoelectric module as in claim 3 wherein: the primary water supply passes through the third low-region heat exchanger unit, and transfers heat to the low-region secondary water supply passing through the third low-region heat exchanger unit, so that the low-region secondary water supply is heated for the second time.
6. A thermoelectric module as in claim 3 wherein: the primary backwater is led out from the third low-region heat exchange unit and the third high-region heat exchange unit, returns to the first heat exchange unit, and transfers heat to the low-region secondary water supply passing through the unit, so that the primary backwater is cooled.
7. A thermoelectric module as in claim 3 wherein: the primary backwater transfers heat to the secondary water supply of the low region through the second heat exchange unit, so that the secondary water supply of the low region is heated for the third time.
8. A thermoelectric module as in claim 3 wherein: the primary water supply pipeline is also connected with the regulating valve group and the third high-area heat exchange unit through the first heat exchange unit.
9. The thermoelectric module of claim 8, wherein: and the regulating valve group is positioned on a primary water supply pipeline between the first heat exchange unit and the third high-area heat exchange unit.
10. The thermoelectric module of claim 1, wherein: the water mixing unit is connected with a secondary water supply pipeline and a secondary water return pipeline at the outlet of the third low-region heat exchange unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021990595.7U CN212901685U (en) | 2020-09-11 | 2020-09-11 | Temperature difference unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021990595.7U CN212901685U (en) | 2020-09-11 | 2020-09-11 | Temperature difference unit |
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| Publication Number | Publication Date |
|---|---|
| CN212901685U true CN212901685U (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021990595.7U Active CN212901685U (en) | 2020-09-11 | 2020-09-11 | Temperature difference unit |
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| CN (1) | CN212901685U (en) |
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- 2020-09-11 CN CN202021990595.7U patent/CN212901685U/en active Active
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