CN212204711U - Heat supply system for improving total heat supply capacity of heat source - Google Patents
Heat supply system for improving total heat supply capacity of heat source Download PDFInfo
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- CN212204711U CN212204711U CN202020992544.1U CN202020992544U CN212204711U CN 212204711 U CN212204711 U CN 212204711U CN 202020992544 U CN202020992544 U CN 202020992544U CN 212204711 U CN212204711 U CN 212204711U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000010521 absorption reaction Methods 0.000 claims abstract description 34
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 230000009466 transformation Effects 0.000 description 4
- 239000012535 impurity Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a heating system for improving the total heating capacity of a heat source, which belongs to the heating field and comprises a plate heat exchanger, an absorption heat pump and an electric heat pump, wherein each water inlet and each water outlet are provided with a valve, the plate heat exchanger is sequentially arranged between a main water inlet pipe and a main water return pipe of a hot water pipe network of a secondary network in parallel, the absorption heat pump and the electric heat pump are connected in parallel, a plate heat exchanger and the absorption heat pump are connected in parallel between a main water inlet pipe and a main water return pipe of a hot water pipe network of a primary network, the plate heat exchanger and the absorption heat pump are connected in series with the electric heat pump after being connected in parallel, a branch pipeline provided with a switching valve I is connected in parallel between a water inlet and a water return port of the electric heat pump, switching valves II and III are respectively arranged on a branch water inlet pipe and a branch water return pipe of the plate heat exchanger, a water outlet of a generator of the absorption heat pump and a primary side water inlet of the plate heat exchanger, and two branch pipelines are arranged between a primary. The utility model discloses reduce heat source return water temperature, improve a pipe network total heating capacity.
Description
Technical Field
The utility model belongs to the technical field of the heat supply and specifically relates to a multimode operation's heating system who improves heating capacity.
Background
Along with the rapid development of urbanization, the urban central heating area is continuously increased, the existing pipe network is difficult to meet the heating demand, and a large conveying bottleneck is generated, so that the whole pipe network needs to be subjected to capacity expansion transformation, however, the capacity expansion transformation of the whole pipe network has huge investment and long transformation period, and therefore, the transformation in the existing waste heat utilization system is the most economical and applicable method. On the premise of not enlarging the pipe diameter, the temperature difference of supply and return water needs to be enlarged to improve the heat supply capacity of waste heat, and the reconstruction of the existing heat supply system has various defects all the time and cannot keep up with the increasing heat supply demand.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a heating system, reduces heat source return water temperature, improves a pipe network total heating capacity.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
a heating system for improving the total heating capacity of a heat source comprises plate heat exchangers, absorption heat pumps and electric heat pumps, wherein valves are arranged at water inlets and water outlets of the plate heat exchangers, the absorption heat pumps and the electric heat pumps, the plate heat exchangers, the absorption heat pumps and the electric heat pumps are sequentially arranged between a main water inlet pipe and a main water return pipe of a hot water pipe network of a secondary network in parallel, the plate heat exchangers and the absorption heat pumps are connected in parallel and then connected in series with the electric heat pumps, a branch pipeline provided with a switching valve I is further connected in parallel between a water inlet and a water return port of the electric heat pumps, a switching valve II and a switching valve III are respectively arranged on a branch water inlet pipe and a branch water return pipe of the plate heat exchangers of the primary network, two branch pipelines arranged along the water flow direction are arranged between the water outlet of the absorption heat pump generator and the primary side water inlet of the plate heat exchanger, and between the primary side water outlet of the plate heat exchanger and the water inlet of the absorption heat pump evaporator.
The utility model discloses technical scheme's further improvement lies in: y-shaped filters are arranged on branch return pipes of the absorption heat pump and the electric heat pump of the secondary network.
The utility model discloses technical scheme's further improvement lies in: and a secondary net circulating water pump is arranged on the main water inlet pipe of the secondary net.
The utility model discloses technical scheme's further improvement lies in: the outlet end of the primary water return pipe of the primary net is sequentially provided with a primary net pressure pump and a primary net flow control electric valve along the water flow direction.
The utility model discloses technical scheme's further improvement lies in: and a heat meter is arranged at the inlet end of the main water inlet pipe of the primary network.
The utility model discloses technical scheme's further improvement lies in: the water inlet pipes of the absorption heat pump and the electric heat pump of the secondary network are sequentially provided with a thermometer and a pressure gauge along the water inlet direction.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
the utility model discloses after utilizing absorption heat pump to retrieve the heat, the rethread series connection electric heat pump further reduces heat source return water temperature, improves a pipe network total heat supply ability, will supply the selective further drawing of return water difference in temperature big, the heat that draws in the nimble control follow heat supply network.
The maximum return water supply temperature difference of the primary network of the heat exchange modes of the common heat exchange equipment such as a plate heat exchanger, an absorption heat pump and the like is 85 ℃, the utility model discloses a can reduce the return water temperature of the primary network, enlarge the temperature difference to 100 ℃, thereby improve the heat supply capacity.
The utility model filters the impurities of the secondary net through the arrangement of the Y-shaped filter; the secondary network circulating water pump, the primary network pressurizing pump and the primary network flow control electric valve provide power sources, and automatic control is realized; the heat meter, the thermometer and the pressure gauge realize the monitoring of temperature and pressure.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the system comprises a plate heat exchanger 1, a plate heat exchanger 2, an absorption heat pump 3, an electric heat pump 4, switching valves I and 5, switching valves II and 6, switching valves III and 7, a Y-shaped filter 8, a secondary network circulating water pump 9, a primary network pressure pump 10, a primary network flow control electric valve 11, a heat meter 12, a thermometer 13 and a pressure meter.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
a heating system for improving the total heating capacity of a heat source is shown in figure 1 and comprises a plate heat exchanger 1, an absorption heat pump 2 and an electric heat pump 3, wherein valves are arranged at water inlets and water outlets of the plate heat exchanger. A plate heat exchanger 1 and an absorption heat pump 2 are connected in parallel between a main water inlet pipe and a main water return pipe of a hot water pipe network of a primary network, the plate heat exchanger 1 and the absorption heat pump 2 are connected in parallel and then connected in series with an electric heat pump 3, a branch pipeline is further connected in parallel between a water inlet and a water return port of the electric heat pump 3, a switching valve I4 is arranged on the branch pipeline, and a switching valve II 5 and a switching valve III 6 are respectively arranged on a branch water inlet pipe and a branch water return pipe of the plate heat exchanger 1 of the primary network. Wherein, the absorption heat pump 2 is also provided with a generator water outlet and an evaporator water inlet, and two branch pipelines arranged along the water flow direction are arranged between the generator water outlet of the absorption heat pump 2 and the primary side water inlet of the plate heat exchanger 1, and between the primary side water outlet of the plate heat exchanger 1 and the evaporator water inlet of the absorption heat pump 2. The outlet end of the primary water return pipe of the primary net is sequentially provided with a primary net pressure pump 9 and a primary net flow control electric valve 10 along the water flow direction.
A plate heat exchanger 1, an absorption heat pump 2 and an electric heat pump 3 are sequentially arranged in parallel between a main water inlet pipe and a main water return pipe of a hot water pipe network of the secondary network, and a secondary network circulating water pump 8 is arranged on the main water inlet pipe of the secondary network.
The utility model has the advantages of need not to rebuild again and enlarge former pipe diameter and can improve the heating capacity, can switch the operational mode in a flexible way, specifically as follows:
when the temperature of the primary network water supply is low in the initial cold weather, the switching valve I4, the switching valve II 5 and the switching valve III 6 are opened, the valves of the absorption heat pump 2 and the electric heat pump 3 are closed, and the plate heat exchanger is independently used for supplying heat;
when the primary network water supply temperature is normal in the cold weather, the switching valve I4 is opened, the valve of the electric heat pump 3 device, the switching valve II 5 and the switching valve III 6 are closed, and the mode that the absorption heat pump 2 and the plate heat exchanger 1 run simultaneously is used;
when the solar water heater is in extremely cold weather, the switching valve I4 is closed, the switching valve II 5 and the switching valve III 6 are opened, other valves are opened, the primary network backwater series electric heat pump 3 is opened, and the final purposes of further reducing the backwater temperature and enlarging the temperature difference to 100 ℃ are achieved.
Example two
In this embodiment, the pipe network arrangement structures of the first embodiment are the same, and the difference is that Y-type filters 7 are arranged on the branch return pipes of the absorption heat pump 2 and the electric heat pump 3 of the secondary network to filter impurities of the secondary network.
A heat meter 11 is arranged at the inlet end of a main water inlet pipe of the primary network, and a thermometer 12 and a pressure gauge 13 are sequentially arranged on water inlet pipes of an absorption heat pump 2 and an electric heat pump 3 of the secondary network along the water inlet direction, so that power required by the system is provided, monitoring of various parameters is completed, and automatic control is realized.
The above-mentioned embodiments are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art without departing from the design spirit of the present invention should fall into the protection scope defined by the claims of the present invention.
Claims (6)
1. The utility model provides an improve heating system of heat source total heat supply ability, includes that each water inlet and delivery port all are provided with plate heat exchanger (1) of valve, absorption heat pump (2) and electric heat pump (3), parallelly connected setting plate heat exchanger (1), absorption heat pump (2) and electric heat pump (3), its characterized in that in proper order between the main inlet tube of the hot-water line network of secondary network and the main wet return: a plate heat exchanger (1) and an absorption heat pump (2) are connected in parallel between a main water inlet pipe and a main water return pipe of a hot water pipe network of a primary network, the plate heat exchanger (1) and the absorption heat pump (2) are connected in parallel and then are connected in series with an electric heat pump (3), a branch pipeline provided with a switching valve I (4) is further connected in parallel between a water inlet and a water return port of the electric heat pump (3), a branch water inlet pipe and a branch water return pipe of the plate heat exchanger (1) of the primary network are respectively provided with a switching valve II (5) and a switching valve III (6), a generator water outlet of the absorption heat pump (2) and a primary side water inlet of the plate heat exchanger (1), and two branch pipelines arranged along the water flow direction are arranged between a primary side water outlet of the plate heat exchanger (1) and a water.
2. A heating system for increasing the total heating capacity of a heat source as claimed in claim 1, wherein: y-shaped filters (7) are arranged on branch water return pipes of the absorption heat pump (2) and the electric heat pump (3) of the secondary network.
3. A heating system for increasing the total heating capacity of a heat source as claimed in claim 1, wherein: a secondary net circulating water pump (8) is arranged on the main water inlet pipe of the secondary net.
4. A heating system for increasing the total heating capacity of a heat source as claimed in claim 1, wherein: the outlet end of the primary water return pipe of the primary net is sequentially provided with a primary net pressure pump (9) and a primary net flow control electric valve (10) along the water flow direction.
5. A heating system for increasing the total heating capacity of a heat source as claimed in claim 1, wherein: the inlet end of the main water inlet pipe of the primary network is provided with a heat meter (11).
6. A heating system for increasing the total heating capacity of a heat source as claimed in claim 1, wherein: a thermometer (12) and a pressure gauge (13) are sequentially arranged on the water inlet pipes of the absorption heat pump (2) and the electric heat pump (3) of the secondary network along the water inlet direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992544.1U CN212204711U (en) | 2020-06-03 | 2020-06-03 | Heat supply system for improving total heat supply capacity of heat source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020992544.1U CN212204711U (en) | 2020-06-03 | 2020-06-03 | Heat supply system for improving total heat supply capacity of heat source |
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| CN212204711U true CN212204711U (en) | 2020-12-22 |
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| CN202020992544.1U Active CN212204711U (en) | 2020-06-03 | 2020-06-03 | Heat supply system for improving total heat supply capacity of heat source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263957A (en) * | 2021-12-06 | 2022-04-01 | 河北工业大学 | Self-capacity-increasing heating system with energy coupling of primary/secondary heating power pipe network |
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2020
- 2020-06-03 CN CN202020992544.1U patent/CN212204711U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114263957A (en) * | 2021-12-06 | 2022-04-01 | 河北工业大学 | Self-capacity-increasing heating system with energy coupling of primary/secondary heating power pipe network |
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