CN220567348U - Heating and hot water combined supply device - Google Patents

Abstract

The utility model belongs to the technical field of heat supply waste heat recovery, and provides a heating and hot water combined supply device which comprises a heating center and a waste heat unit, wherein the heating center is communicated with the waste heat unit through a primary net water return pipe and a primary net water supply pipe, a heat supply net heating unit is communicated with the primary net water supply pipe, a heating unit is communicated between the primary net water return pipe and the primary net water supply pipe, a communication point between the heating unit and the primary net water supply pipe is positioned between the heat supply net heating unit and the heating center, and a tap water pipe and a vending hot water pipe are communicated in the heating center. The utility model fully utilizes the waste heat generated by the thermal power plant to prepare domestic hot water, realizes the annual hot water supply, and simultaneously can perform water heating combined supply in winter.

Description

Heating and hot water combined supply device

Technical Field

The utility model belongs to the technical field of heat supply waste heat recovery, and particularly relates to a heating and hot water combined supply device.

Background

In the cities in northern China, various public bathrooms, bath centers and the like are arranged, hot water sources of the bathrooms mainly come from self-contained coal-fired water heaters, and a heat purchasing mode is adopted in a very small part of the bathrooms. As the dispersion water heater has a large number, is distributed and dispersed, is a small coal-fired boiler, has low combustion efficiency, basically does not have smoke dust treatment equipment, has high pollutant emission concentration, has certain influence on the atmospheric environment, and has low dispersion heat efficiency, thereby causing energy waste.

The existing thermal power plant power generation energy is coal, a large amount of heat energy is taken away by circulating water in the power generation process due to the requirement of a production process and is directly discharged into the atmosphere, so that the energy waste is caused, and the existing heat pump system is stopped in a non-heating season, and all waste heat is not utilized. Therefore, how to collect the heat of the waste heat of the thermal power plant through a heating and hot water combined supply device and to prepare domestic hot water, the water heating combined supply device can realize annual operation so as to supply the hot water requirement of the urban bath industry, can achieve better environmental protection and energy saving effects, and can obtain good economic and social benefits.

Disclosure of Invention

The utility model aims to provide a heating and hot water combined supply device so as to solve the problems, and achieve the purposes of fully utilizing waste heat generated by a thermal power plant to prepare domestic hot water, realizing water heating combined supply of supplying hot water all the year round and heating in winter.

In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a heating and hot water allies oneself with supply device, includes heating center and waste heat unit, the heating center with through one-level net wet return and one-level net delivery pipe intercommunication between the waste heat unit, the intercommunication has the heating network heating unit on the one-level net delivery pipe, the one-level net wet return with the intercommunication has the heating unit between the one-level net delivery pipe, the heating unit with the communication point between the one-level net delivery pipe is located the heating network heating unit with between the heating center, the intercommunication has the water pipe and sell the hot-water line in the heating center.

Preferably, a heat exchanger is arranged in the heating center, a hot fluid water inlet and a hot fluid water outlet of the heat exchanger are respectively communicated with the primary network water supply pipe and the primary network water return pipe, a cold fluid water inlet and a cold fluid water outlet of the heat exchanger are respectively communicated with the tap water pipe and the vending hot water pipe, a circulating water pump is communicated on the tap water pipe, a hot water storage tank is further communicated with the cold fluid water outlet of the heat exchanger, a water outlet of the hot water storage tank is communicated with the middle part of the vending hot water pipe through a water drain valve, and a pressure buffer assembly is arranged between the tap water pipe and the hot water storage tank.

Preferably, the pressure buffer assembly comprises a water tank, a water inlet end of the water tank is communicated with the middle part of the tap water pipe, the circulating water pump is positioned between the heat exchanger and the water tank, and a water outlet end of the water tank is communicated with the hot water storage tank through a water supplementing pump.

Preferably, the heating unit comprises a heating network heating system, two ends of the heating network heating system are respectively communicated with one end of a first branch pipe and one end of a second branch pipe, the other end of the first branch pipe and the other end of the second branch pipe are respectively communicated with the middle part of a first-level network water supply pipe, a first valve is communicated with the first branch pipe, a third valve is communicated with the second branch pipe, a second valve is communicated with the first-level network water supply pipe, and the second valve is located between the first branch pipe and the second branch pipe.

Preferably, the waste heat unit comprises a heat pump system and a power plant circulating cooling system, a circulating water channel is formed between the heat pump system and the power plant circulating cooling system through a cooling water supply pipe and a cooling water return pipe, and a circulating water channel is formed between the heat pump system and the heat exchanger through a primary network return pipe and a primary network water supply pipe.

Preferably, the heating unit comprises a heat exchange station, a second-level net return pipe and a second-level net water supply pipe are communicated with the heat exchange station, the first-level net return pipe and the first-level net water supply pipe are respectively communicated with the heat exchange station through a third branch pipe and a fourth branch pipe, a fourth valve and a fifth valve are respectively communicated with the third branch pipe and the fourth branch pipe, and the third branch pipe is positioned between the second branch pipe and the heating center.

Compared with the prior art, the utility model has the following advantages and technical effects: the main function of the heating center is to heat and store tap water conveyed in a tap water pipe by utilizing the residual heat of the residual heat unit and the heating unit of the heat supply network, and supply the tap water to residents; the waste heat unit is mainly used for collecting heat generated in the power generation process of the thermal power plant; the main function of the heating network heating unit is to continuously heat the hot water heated by the waste heat unit, provide enough hot water for the heating unit in winter heating season, and provide auxiliary heat for the heating center when needed; the heating unit is mainly used for heating residents by utilizing the heat of the waste heat unit and the heat supply network heating unit in winter; in the whole, the utility model can fully utilize the waste heat generated by the power generation of the thermal power plant to supply the hot water all the year round, avoid the waste of heat in the power generation process, and simultaneously can normally perform heating in a heating season, and has high resource utilization rate and good environmental protection benefit.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the connection of the co-feed device of the present utility model;

FIG. 2 is a schematic view of a heating center of the present utility model;

1, a power plant circulating cooling system; 2. a heat pump system; 3. a heating center; 4. a heating network heating system; 5. a heat exchange station; 6. a primary network return pipe; 7. a first-level net water supply pipe; 8. a tap water pipe; 9. selling hot water pipes; 10. a secondary network return pipe; 11. a secondary network water supply pipe; 12. a water tank; 13. a heat exchanger; 14. a water supplementing pump; 15. a circulating water pump; 16. a hot water storage tank; 17. a water drain valve; 18. a first branch pipe; 19. a first valve; 20. a second valve; 21. a second branch pipe; 22. a third valve; 23. a fourth valve; 24. a fifth valve; 25. a cooling water supply pipe; 26. a cooling water return pipe; 27. a third branch pipe; 28. and a fourth branch pipe.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.

Referring to fig. 1-2, the utility model provides a heating and hot water combined supply device, which comprises a heating center 3 and a waste heat unit, wherein the heating center 3 and the waste heat unit are communicated through a primary net return pipe 6 and a primary net water supply pipe 7, a heat supply net heating unit is communicated on the primary net water supply pipe 7, a heating unit is communicated between the primary net return pipe 6 and the primary net water supply pipe 7, a communication point between the heating unit and the primary net water supply pipe 7 is positioned between the heat supply net heating unit and the heating center 3, and a tap water pipe 8 and a vending hot water pipe 9 are communicated in the heating center 3.

The main function of the heating center 3 is to heat and store tap water conveyed in the tap water pipe 8 by utilizing the residual heat of the residual heat unit and the heating unit of the heat supply network, and supply the tap water to residents; the waste heat unit is mainly used for collecting heat generated in the power generation process of the thermal power plant; the main function of the heating network heating unit is to continuously heat the hot water heated by the waste heat unit, provide enough hot water for the heating unit in winter heating season, and provide auxiliary heat for the heating center when needed; the heating unit is mainly used for heating residents by utilizing the heat of the waste heat unit and the heat supply network heating unit in winter; in the whole, the utility model can fully utilize the waste heat generated by the power generation of the thermal power plant to supply the hot water all the year round, avoid the waste of heat in the power generation process, and simultaneously can normally perform heating in a heating season, and has high resource utilization rate and good environmental protection benefit.

Further optimizing scheme, the inside heat exchanger 13 that is provided with of heating center 3, the hot fluid water inlet and the hot fluid delivery port of heat exchanger 13 respectively with one-level net delivery pipe 7, one-level net wet return 6 intercommunication, the cold fluid water inlet and the cold fluid delivery port of heat exchanger 13 respectively with water supply pipe 8, sell hot-water line 9 intercommunication, the intercommunication has circulating water pump 15 on the water supply pipe 8, the cold fluid delivery port of heat exchanger 13 still communicates there is hot water holding vessel 16, through drain valve 17 intercommunication between the delivery port of hot water holding vessel 16 and the middle part of selling hot-water line 9, be provided with pressure buffer assembly between water supply pipe 8 and the hot water holding vessel 16.

The heat exchanger 13 is preferably a plate heat exchanger, and the number of the heat exchangers can be determined according to actual water consumption conditions. The water in the heat exchanger 13 flows into the waste heat unit through the primary network water return pipe 6, after being heated by the waste heat generated in the waste heat unit, flows back into the heat exchanger 13 through the primary network water supply pipe 7, so that the heat exchanger 13 is heated, tap water in the tap water pipe 8 is pumped into the heat exchanger 13 through the circulating water pump 15 to be heated to a preset temperature, and the heated tap water can directly flow out of the vending hot water pipe 9 for vending hot water and also can flow into the hot water storage tank 16 for storage. When it is desired to take hot water from the hot water storage tank 16, the drain valve 17 is opened and the hot water is discharged through the drain valve 17 and the vending hot water pipe 9.

Further optimizing scheme, the pressure buffering subassembly includes water tank 12, and the water inlet end of water tank 12 communicates with the middle part of running water pipe 8, and circulating water pump 15 is located between heat exchanger 13 and water tank 12, communicates through moisturizing pump 14 between the play water end of water tank 12 and the hot water holding vessel 16.

The device adopts municipal tap water to supplement water through the tap water pipe 8 in daily work, and simultaneously supplements water in the water tank 12 as a standby, so that the device has a certain water quantity and water pressure balance function and a water quantity storage and regulation function.

Further optimizing scheme, the heating unit includes heating network heating system 4, and the both ends of heating network heating system 4 communicate respectively has the one end of first branch pipe 18 and the one end of second branch pipe 21, and the other end of first branch pipe 18 and the other end of second branch pipe 21 communicate with the middle part of first class net delivery pipe 7 respectively, and the intercommunication has first valve 19 on the first branch pipe 18, and the intercommunication has third valve 22 on the second branch pipe 21, and the intercommunication has second valve 20 on the first class net delivery pipe 7, and second valve 20 is located between first branch pipe 18 and the second branch pipe 21.

The heat supply network heating system 4 is formed by connecting a plurality of heat supply network heating units in series. In the heating season, the second valve 20 is closed, the first valve 19 and the third valve 22 are opened, the water primarily heated by the waste heat unit enters the heat supply network heating system 4 for reheating so as to meet the heating temperature requirement, and meanwhile, the reheated water enters the heat exchanger 13 for heating tap water. In the non-heating season, the second valve 20 is opened, the first valve 19 and the third valve 22 are closed, the heating network heating system 4 can be stopped, and the hot water is heated only by the heat of the waste heat unit, so that the energy is efficiently utilized.

According to a further optimization scheme, the waste heat unit comprises a heat pump system 2 and a power plant circulating cooling system 1, a circulating water channel is formed between the heat pump system 2 and the power plant circulating cooling system 1 through a cooling water supply pipe 25 and a cooling water return pipe 26, and a circulating water channel is formed between the heat pump system 2 and the heat exchanger 13 through a primary network return pipe 6 and a primary network water supply pipe 7.

The heat pump system 2 is formed by connecting a plurality of heat pump units in series, and high-temperature cooling water flowing out of the power plant circulating cooling system 1 enters the heat pump system 2 to release heat so as to heat and raise the temperature of water in the primary network water return pipe 6. The low-temperature cooling water after releasing heat is circulated into the power plant circulating cooling system 1 through the cooling water return pipe 26 to absorb heat for cooling operation.

Further optimizing scheme, the heating unit includes heat exchange station 5, and the last intercommunication of heat exchange station 5 has second grade net wet return 10 and second grade net delivery pipe 11, and first grade net wet return 6 and first grade net delivery pipe 7 are respectively through third branch pipe 27 and fourth branch pipe 28 and heat exchange station 5 intercommunication, are respectively connected with fourth valve 23 and fifth valve 24 on third branch pipe 27 and the fourth branch pipe 28, and third branch pipe 27 is located between second branch pipe 21 and the heating center 3.

After entering the heat exchange station 5, the high-temperature hot water in the primary-net water supply pipe 7 flows to the user side through the secondary-net water supply pipe 11, and the reflux cold water of the user side returns to the primary-net water return pipe 6 through the heat exchange station 5 so as to perform subsequent temperature rising work.

The working procedure of this embodiment is as follows: in non-heating season, the second valve 20 is opened, the first valve 19, the third valve 22, the fourth valve 23 and the fifth valve 24 are closed, the heat supply network heating system is stopped, low-temperature water in the heat exchanger 13 enters the waste heat unit through the primary network water return pipe 6 and is heated, then enters the heat exchanger 13 through the primary network water supply pipe 7, municipal tap water is heated to prepare domestic hot water, the domestic hot water can be directly taken through the vending hot water pipe 9, and the domestic hot water can be stored in the hot water storage tank 16.

In the heating season and the first and last cold period of the heating season, the second valve 20 is closed, and the first, third, fourth and fifth valves 19, 22, 23 and 24 are opened. After the low-temperature water in the heat exchange station 5 and the heat exchanger 13 enters the heat pump system 2 through the primary network water return pipe 6 and is primarily heated, the low-temperature water enters the heat supply network heating system 4 through the primary network water supply pipe 7 and the first branch pipe 18 to be further heated, the heated hot water is conveyed to a user side through the heat exchange station 5, and meanwhile, part of the hot water in the heat supply network heating system 4 flows into the heat exchanger 13 to heat municipal tap water to prepare domestic hot water.

In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.

Claims (6)

1. A heating and hot water combined supply device, which is characterized in that: including heating center (3) and waste heat unit, heating center (3) with through one-level net wet return (6) and one-level net delivery pipe (7) intercommunication between the waste heat unit, the intercommunication has heating network heating unit on one-level net delivery pipe (7), one-level net wet return (6) with the intercommunication has heating unit between one-level net delivery pipe (7), heating unit with the connected point between one-level net delivery pipe (7) is located heating network heating unit with between heating center (3), heating center (3) in-connection has water pipe (8) and sells hot-water line (9).

2. A combined heating and hot water supply apparatus according to claim 1, wherein: the utility model discloses a water heater, including heating center (3), heat exchanger (13), heat fluid water inlet and heat fluid delivery port of heat exchanger (13) respectively with one-level net delivery pipe (7) one-level net wet return (6) intercommunication, cold fluid water inlet and cold fluid delivery port of heat exchanger (13) respectively with water pipe (8), sell hot-water line (9) intercommunication, the last intercommunication of water pipe (8) has circulating water pump (15), the cold fluid delivery port of heat exchanger (13) still communicates there is hot water holding vessel (16), through drain valve (17) intercommunication between the delivery port of hot water holding vessel (16) with sell the middle part of hot-water line (9), water pipe (8) with be provided with pressure buffer assembly between hot water holding vessel (16).

3. A combined heating and hot water supply apparatus according to claim 2, wherein: the pressure buffering assembly comprises a water tank (12), a water inlet end of the water tank (12) is communicated with the middle of the tap water pipe (8), a circulating water pump (15) is located between the heat exchanger (13) and the water tank (12), and a water outlet end of the water tank (12) is communicated with the hot water storage tank (16) through a water supplementing pump (14).

4. A combined heating and hot water supply apparatus according to claim 1, wherein: the heating unit comprises a heating network heating system (4), two ends of the heating network heating system (4) are respectively communicated with one end of a first branch pipe (18) and one end of a second branch pipe (21), the other end of the first branch pipe (18) and the other end of the second branch pipe (21) are respectively communicated with the middle part of a first-level network water supply pipe (7), a first valve (19) is communicated with the first branch pipe (18), a third valve (22) is communicated with the second branch pipe (21), a second valve (20) is communicated with the first-level network water supply pipe (7), and the second valve (20) is located between the first branch pipe (18) and the second branch pipe (21).

5. A combined heating and hot water supply apparatus according to claim 2, wherein: the waste heat unit comprises a heat pump system (2) and a power plant circulating cooling system (1), a circulating water path is formed between the heat pump system (2) and the power plant circulating cooling system (1) through a cooling water supply pipe (25) and a cooling water return pipe (26), and a circulating water path is formed between the heat pump system (2) and the heat exchanger (13) through the primary network return pipe (6) and the primary network water supply pipe (7).

6. A combined heating and hot water supply apparatus according to claim 4, wherein: the heating unit comprises a heat exchange station (5), a secondary network water return pipe (10) and a secondary network water supply pipe (11) are communicated with the heat exchange station (5), a primary network water return pipe (6) and the primary network water supply pipe (7) are respectively communicated with the heat exchange station (5) through a third branch pipe (27) and a fourth branch pipe (28), a fourth valve (23) and a fifth valve (24) are respectively communicated with the third branch pipe (27) and the fourth branch pipe (28), and the third branch pipe (27) is positioned between the second branch pipe (21) and the heating center (3).