CN114608052A - Combined heat and power distributed heating plant device - Google Patents
Combined heat and power distributed heating plant device Download PDFInfo
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- CN114608052A CN114608052A CN202210178903.3A CN202210178903A CN114608052A CN 114608052 A CN114608052 A CN 114608052A CN 202210178903 A CN202210178903 A CN 202210178903A CN 114608052 A CN114608052 A CN 114608052A
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- heat exchange
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D11/00—Central heating systems using heat accumulated in storage masses
- F24D11/002—Central heating systems using heat accumulated in storage masses water heating system
- F24D11/005—Central heating systems using heat accumulated in storage masses water heating system with recuperation of waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
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- Engineering & Computer Science (AREA)
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- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention relates to a combined heat and power distributed heating plant device, belonging to the technical field of combined heat and power, and comprising a first pipe loop, a second pipe loop and a heat source plant, wherein the first pipe loop is communicated with the heat source plant; a second pipe loop in communication with a user; the main heat exchange equipment is internally provided with a corresponding first heat exchange tube and a corresponding second heat exchange tube, and the first heat exchange tube and the second heat exchange tube are respectively arranged on a first tube loop and a second tube loop; the main heat exchange equipment is internally provided with a third heat exchange tube and a fourth heat exchange tube which correspond to each other, the third heat exchange tube and the fourth heat exchange tube are respectively arranged in the third tube loop and the first tube loop, and the fourth heat exchange tube is positioned at the downstream of the first heat exchange tube; two ends of the water passing branch are communicated with the second pipe loop, and two ends of the water passing branch are respectively positioned at the upstream and the downstream of the second heat exchange pipe; and the auxiliary heat exchange equipment is internally provided with a fifth heat exchange tube and a sixth heat exchange tube which correspond to each other, and the fifth heat exchange tube and the sixth heat exchange tube are respectively arranged on the third tube loop and the water through branch. In this way, the heat utilization efficiency of the water supply in the first pipe loop of the device is higher.
Description
Technical Field
The invention belongs to the technical field of combined heat and power, and particularly relates to a combined heat and power distributed heating plant device.
Background
The central heating satisfies the indoor thermal comfort in winter in most northern towns, and the heat is produced by the heat source in a centralized manner, is conveyed to the terminal radiating equipment of the user through the primary pipe network and the secondary pipe network, maintains the indoor temperature constant under the condition of lower outdoor temperature, and for the heat supply network, the temperature difference of the supply return water and the circulating flow determine the heat conveying efficiency. The traditional combined heat and power supply heating plant has small temperature difference of supply water and return water and low heat utilization efficiency.
Disclosure of Invention
The invention provides a combined heat and power distributed heating plant device which is used for solving the technical problems that the temperature difference of supply water and return water of a combined heat and power heating plant in the prior art is small and the heat utilization efficiency is low.
The invention is realized by the following technical scheme: a cogeneration distributed heating plant apparatus, comprising:
a first pipe loop in communication with a heat source plant;
a second pipe loop in communication with a user;
the main heat exchange equipment is internally provided with a corresponding first heat exchange tube and a corresponding second heat exchange tube, and the first heat exchange tube and the second heat exchange tube are respectively communicated with the first tube loop and the second tube loop;
the main heat exchange equipment is internally provided with a third heat exchange tube and a fourth heat exchange tube which correspond to each other, the third heat exchange tube and the fourth heat exchange tube are respectively communicated with the third tube loop and the first tube loop, and the fourth heat exchange tube is positioned at the downstream of the first heat exchange tube;
the two ends of the water passing branch are communicated with the second pipe loop, and the two ends of the water passing branch are respectively positioned at the upstream and the downstream of the second heat exchange pipe;
and the auxiliary heat exchange equipment is internally provided with a fifth heat exchange tube and a sixth heat exchange tube which correspond to each other, and the fifth heat exchange tube and the sixth heat exchange tube are respectively communicated with the third tube loop and the water through branch.
Further, in order to better implement the present invention, the first pipe loop is provided with a water supply pump for pumping hot water in the heat source plant into the first pipe loop.
Further, in order to better implement the present invention, the second pipe loop is provided with a circulation pump for driving circulation of water in the second pipe loop, and the water circulation branch is disposed downstream of the circulation pump.
Furthermore, in order to better implement the present invention, a water replenishing branch for injecting water into the second pipe loop is further communicated with the second pipe loop, a water replenishing pump is arranged on the water replenishing branch, and the water replenishing branch is arranged at the upstream of the circulating pump.
Furthermore, in order to better implement the present invention, a dosing branch for adding medicine into the second pipe loop is further communicated with the second pipe loop, and the dosing branch is arranged at the upstream of the circulating pump and the downstream of the water replenishing branch.
Further, in order to better implement the present invention, a compressor for driving a medium in the third pipe circuit to flow is provided in the third pipe circuit, and the compressor is located downstream of the third heat exchange pipe and upstream of the fifth heat exchange pipe.
Further, in order to better implement the present invention, a filtering device for filtering the medium in the third tube circuit is further provided in the third tube circuit, and the filtering device is provided upstream of the third heat exchange tube and downstream of the fifth heat exchange tube.
Further, in order to better implement the invention, an energy storage tank is further arranged in the third pipeline, and the energy storage pipe is communicated and arranged between the fifth heat exchange pipe and the filtering equipment.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a combined heat and power distributed heating plant device, which comprises a first pipe loop communicated with a heat source plant, a second pipe loop communicated with a user, a main heat exchange device, a third pipe loop, an auxiliary heat exchange device and a water passing branch, wherein the main heat exchange device is internally provided with a corresponding first heat exchange pipe and a second heat exchange pipe which are respectively communicated with the first pipe loop and the second pipe loop, the main heat exchange device is also internally provided with a corresponding third heat exchange pipe and a corresponding fourth heat exchange pipe which are respectively communicated with the third pipe loop and the first pipe loop, the fourth heat exchange pipe is positioned at the downstream of the first heat exchange pipe, the two ends of the water passing branch are communicated with the second pipe loop, the two ends of the water passing branch are respectively positioned at the upstream and the downstream of the second heat exchange pipe, the auxiliary heat exchange device is internally provided with a corresponding fifth heat exchange pipe and a corresponding sixth heat exchange pipe, and the fifth heat exchange tube and the sixth heat exchange tube are respectively communicated with the third tube loop and the water through branch.
Through the structure, the heat in the hot water from the heat source factory is transferred to the second pipe loop communicated with the user after primary heat exchange through the corresponding first heat exchange pipe and the second heat exchange pipe, the water still has waste heat after the primary heat exchange, the hot water with the waste heat enters the fourth heat exchange pipe, most of the waste heat is transferred to the medium in the third pipe loop through the secondary heat exchange action between the corresponding third heat exchange pipe and the fourth heat exchange pipe, finally, the heat in the medium in the third pipe loop is transferred to the water in the water through branch after the heat exchange action between the corresponding fifth heat exchange pipe and the corresponding sixth heat exchange pipe, the water through branch is communicated and arranged on the second pipe loop, so that most of the waste heat in the first pipe loop is also transferred to the second pipe loop connected with the user through the transfer, therefore, through the two heat exchange actions between the first heat exchange tube and the second heat exchange tube and between the third heat exchange tube and the fourth heat exchange tube, the heat in the water supply of the corresponding first tube loop is deeply utilized, so that the temperature difference of the water supply and return of the first tube loop is increased, and the heat utilization efficiency of the water supply in the first tube loop is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a cogeneration distributed heating plant apparatus provided by the present invention.
In the figure:
1-a first pipe loop; 11-water supply pump;
2-heat source plant;
3-a second pipe loop; 31-a circulation pump;
4-the user;
5-main heat exchange equipment; 51-a first heat exchange tube; 52-a second heat exchange tube; 53-a third heat exchange tube; 54-a fourth heat exchange tube;
6-a third pipe loop; 61-a compressor; 62-a filtration device; 63-an energy storage tank;
7-water branch;
8-auxiliary heat exchange equipment; 81-a fifth heat exchange tube; 82-a sixth heat exchange tube;
9-a water replenishing branch; 91-make-up water pump;
10-medicated branch.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the embodiment provides a distributed heating plant device of combined heat and power, and the confession return water difference in temperature of having solved the combined heat and power heating plant among the prior art is less, the lower technical problem of heat utilization efficiency. The distributed heat supply station device for the combined heat and power supply comprises a first pipe loop 1 communicated with a heat source plant 2, a second pipe loop 3 communicated with a user 4, a main heat exchange device 5, a third pipe loop 6, an auxiliary heat exchange device 8 and a water through branch 7, wherein the main heat exchange device 5 is internally provided with a corresponding first heat exchange pipe 51 and a second heat exchange pipe 52, the first heat exchange pipe 51 and the second heat exchange pipe 52 are respectively communicated with the first pipe loop 1 and the second pipe loop 3, the main heat exchange device 5 is also internally provided with a corresponding third heat exchange pipe 53 and a fourth heat exchange pipe 54, the third heat exchange pipe 53 and the fourth heat exchange pipe 54 are respectively communicated with the third pipe loop 6 and the first pipe loop 1, the fourth heat exchange pipe 54 is positioned at the downstream of the first heat exchange pipe 51, the two ends of the water through branch 7 are communicated with the second pipe loop 3, the two ends of the water through branch 7 are respectively positioned at the upstream and the downstream of the second heat exchange pipe 52, a fifth heat exchange tube 81 and a sixth heat exchange tube 82 which correspond to each other are arranged in the auxiliary heat exchange device 8, and the fifth heat exchange tube 81 and the sixth heat exchange tube 82 are respectively communicated with the third tube loop 6 and the water passing branch 7. Optionally, the main heat exchange device 5 and the auxiliary heat exchange device 8 in this embodiment are both plate-insert heat exchangers, and of course, the auxiliary heat exchange device 8 may also be a condenser.
Through the above structure, the heat in the hot water from the heat source plant 2 is transferred to the second pipe loop 3 connected with the user 4 after the first heat exchange through the corresponding first heat exchange pipe 51 and second heat exchange pipe 52, the water from the first heat exchange still has residual heat, the hot water with residual heat enters the fourth heat exchange pipe 54, the majority of residual heat is transferred to the medium in the third pipe loop 6 through the second heat exchange between the corresponding third heat exchange pipe 53 and fourth heat exchange pipe 54, finally the heat in the medium in the third pipe loop 6 is transferred to the water in the water through branch 7 after the heat exchange between the corresponding fifth heat exchange pipe 81 and sixth heat exchange pipe, and the water through branch 7 is connected to the second pipe loop 3, so that the majority of residual heat in the first pipe loop 1 is also transferred to the second pipe loop 3 connected with the user 4 through the transfer, in this way, through the above-mentioned two heat exchange actions between the first heat exchange tube 51 and the second heat exchange tube and between the third heat exchange tube 53 and the fourth heat exchange tube 54, the heat in the water supply corresponding to the first tube loop 1 is deeply utilized, so as to increase the temperature difference between the water supply and the water return of the first tube loop 1 and improve the heat utilization efficiency of the water supply in the first tube loop 1.
The first pipe loop 1 is provided with a water supply pump 11, the water supply pump 11 is used for pumping hot water in the heat source plant 2 into the first pipe loop 1, and the water supply pump 11 is disposed upstream of the first heat exchange pipe 51. Under the action of the water supply pump 11, the water of the heat source plant 2 can smoothly enter the first pipe loop 1, and it should be noted that the supply and return water temperature of the first pipe loop 1 is: the temperature of the water discharged from the water supply pump 11 is a supply water temperature, and the temperature of the water flowing back to the heat source plant 2 through the first pipe loop 1 is a return water temperature.
The second pipe circuit 3 is provided with a circulation pump 31, the circulation pump 31 circulates the water in the second pipe circuit 3, and the water passage branch 7 is provided downstream of the circulation pump 31. In this way, the circulation pump 31 pumps the water, which has come out of the user 4 and entered the second pipe circuit 3, into the water passage branch 7 and the second heat exchange pipe 52.
More preferably, a water replenishing branch 9 is further connected to the second pipe circuit 3, a water replenishing pump 91 is provided to the water replenishing branch 9, the water replenishing branch 9 is provided upstream of the circulation pump 31, and when the water pressure is lowered due to insufficient water in the second pipe circuit 3 through the water replenishing branch 9, water is injected into the second pipe circuit 3 through the water replenishing branch 9, thereby replenishing the water to the second pipe circuit 3.
Preferably, a medicine feeding branch 10 is further communicated with the second pipe loop 3, the medicine feeding branch 10 is arranged at the upstream of the circulating pump 31 and at the downstream of the water replenishing branch 9, and a user can add required medicines into the second pipe loop 3 through the medicine feeding branch 10.
An alternative implementation of this embodiment is as follows: a compressor 61 is arranged in the third pipe loop 6, the compressor 61 is used for driving the medium in the third pipe loop 6 to flow, and the compressor 61 is positioned at the downstream of the third heat exchange pipe 53 and at the upstream of the fifth heat exchange pipe 81.
More preferably, a filtering device 62 for filtering the medium in the third tube circuit 6 is further provided in the third tube circuit 6, the filtering device 62 being provided upstream of the third heat exchange tube 53 and downstream of the fifth heat exchange tube 81. Through above-mentioned filtration equipment 62 for the medium that circulates in the third pipe loop 6 is purer, and the heat transfer effect is better, and reduces the probability that third pipe loop 6 blockked up.
Preferably, an energy storage tank 63 is further disposed in the third pipe loop 6, and the energy storage pipe is disposed between the fifth heat exchange pipe 81 and the filtering device 62 in a communication manner. Specifically, the energy storage tank 63 is a medium storage tank for storing the medium flowing out through the fifth heat pipe. Because a certain amount of heat still exists in the medium coming out of the fifth heat exchange tube 81, the heat can be temporarily stored by the energy storage tank 63, and when the compressor 61 operates, the medium in the energy storage tank 63 is driven to enter the third tube loop 6, so that the medium with a certain amount of heat enters the third tube loop 6 for heat exchange, and the heat utilization rate is further improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (8)
1. A cogeneration distributed heating plant apparatus, comprising:
a first pipe loop in communication with a heat source plant;
a second pipe loop in communication with a user;
the main heat exchange equipment is internally provided with a corresponding first heat exchange tube and a corresponding second heat exchange tube, and the first heat exchange tube and the second heat exchange tube are respectively communicated with the first tube loop and the second tube loop;
the main heat exchange equipment is internally provided with a third heat exchange tube and a fourth heat exchange tube which correspond to each other, the third heat exchange tube and the fourth heat exchange tube are respectively communicated with the third tube loop and the first tube loop, and the fourth heat exchange tube is positioned at the downstream of the first heat exchange tube;
the two ends of the water passing branch are communicated with the second pipe loop, and are respectively positioned at the upstream and the downstream of the second heat exchange pipe;
and the auxiliary heat exchange equipment is internally provided with a fifth heat exchange tube and a sixth heat exchange tube which correspond to each other, and the fifth heat exchange tube and the sixth heat exchange tube are respectively communicated with the third tube loop and the water through branch.
2. The cogeneration distributed heating plant apparatus of claim 1, wherein: the first pipe loop is provided with a water supply pump for pumping hot water in the heat source plant into the first pipe loop.
3. The cogeneration distributed heating plant apparatus of claim 1, wherein: the second pipe loop is provided with a circulating pump for driving water in the second pipe loop to circulate, and the water circulation branch is arranged at the downstream of the circulating pump.
4. The cogeneration distributed heating plant apparatus of claim 3, wherein: still communicate on the second pipe loop and be provided with and be used for court the moisturizing branch road of water injection in the second pipe loop, be provided with the moisturizing pump on the moisturizing branch road, the moisturizing branch road set up in the upper reaches of circulating pump.
5. The cogeneration distributed heating plant apparatus of claim 4, wherein: the second pipe loop is further communicated with a dosing branch for adding medicine into the second pipe loop, and the dosing branch is arranged at the upstream of the circulating pump and the downstream of the water replenishing branch.
6. The cogeneration distributed heating plant apparatus of any one of claims 1-5, wherein: and a compressor for driving the medium in the third pipe loop to flow is arranged in the third pipe loop, and the compressor is positioned at the downstream of the third heat exchange pipe and at the upstream of the fifth heat exchange pipe.
7. The cogeneration distributed heating plant apparatus of claim 6, wherein: and the third pipe loop is also internally provided with a filtering device for filtering a medium in the third pipe loop, and the filtering device is arranged at the upstream of the third heat exchange pipe and at the downstream of the fifth heat exchange pipe.
8. The cogeneration distributed heating plant apparatus of claim 7, wherein: an energy storage tank is further arranged in the third pipeline, and the energy storage pipe is communicated between the fifth heat exchange pipe and the filtering equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210178903.3A CN114608052A (en) | 2022-02-25 | 2022-02-25 | Combined heat and power distributed heating plant device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210178903.3A CN114608052A (en) | 2022-02-25 | 2022-02-25 | Combined heat and power distributed heating plant device |
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| CN114608052A true CN114608052A (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210178903.3A Pending CN114608052A (en) | 2022-02-25 | 2022-02-25 | Combined heat and power distributed heating plant device |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2298768A1 (en) * | 1975-01-27 | 1976-08-20 | Parica | Recovery of heat from water source at medium temps. - using heat pumps and heat exchangers in a closed loop circulating system |
| CN200996678Y (en) * | 2007-01-15 | 2007-12-26 | 李铁章 | Stepped reducting heat supplier |
| JP2012220086A (en) * | 2011-04-07 | 2012-11-12 | Mitsubishi Electric Corp | Heat pump system and control method therefor |
| CN108534208A (en) * | 2018-05-15 | 2018-09-14 | 济南金孚瑞供热工程技术有限公司 | A kind of big temperature difference heat-exchange system |
| CN108644866A (en) * | 2018-06-12 | 2018-10-12 | 大连理工大学 | A kind of solar energy Coupling Water-source Heat Pump heat supply heating system and application method |
| DE102017221523A1 (en) * | 2017-11-30 | 2019-06-06 | Robert Bosch Gmbh | Method for operating a heating system, heating device for such a heating system and control and / or regulating unit for such a heating system |
| CN111121136A (en) * | 2019-12-30 | 2020-05-08 | 日出东方控股股份有限公司 | Heating system based on multi-mode heat supply |
| US20220205686A1 (en) * | 2020-12-30 | 2022-06-30 | Trane International Inc. | Storage source and cascade heat pump systems |
-
2022
- 2022-02-25 CN CN202210178903.3A patent/CN114608052A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2298768A1 (en) * | 1975-01-27 | 1976-08-20 | Parica | Recovery of heat from water source at medium temps. - using heat pumps and heat exchangers in a closed loop circulating system |
| CN200996678Y (en) * | 2007-01-15 | 2007-12-26 | 李铁章 | Stepped reducting heat supplier |
| JP2012220086A (en) * | 2011-04-07 | 2012-11-12 | Mitsubishi Electric Corp | Heat pump system and control method therefor |
| DE102017221523A1 (en) * | 2017-11-30 | 2019-06-06 | Robert Bosch Gmbh | Method for operating a heating system, heating device for such a heating system and control and / or regulating unit for such a heating system |
| CN108534208A (en) * | 2018-05-15 | 2018-09-14 | 济南金孚瑞供热工程技术有限公司 | A kind of big temperature difference heat-exchange system |
| CN108644866A (en) * | 2018-06-12 | 2018-10-12 | 大连理工大学 | A kind of solar energy Coupling Water-source Heat Pump heat supply heating system and application method |
| CN111121136A (en) * | 2019-12-30 | 2020-05-08 | 日出东方控股股份有限公司 | Heating system based on multi-mode heat supply |
| US20220205686A1 (en) * | 2020-12-30 | 2022-06-30 | Trane International Inc. | Storage source and cascade heat pump systems |
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