阅读说明：本技术 一种采暖、空调、生活热水三联供装置及控制方法 (Heating, air conditioning and domestic hot water triple-generation device and control method ) 是由 钱雪松 陈蔡辉 王信海 薛晓丹 陈育森 倪明龙 盛帮明 陈露 吴怡卫 于 2020-12-25 设计创作，主要内容包括：本发明属于能源梯级利用相关技术领域,公开了一种采暖、空调、生活热水三联供装置,所述装置分别与工业余热热水水源、空调用水管道和生活用水管道相连接,所述装置包括供热模块、制冷模块和热水加热模块,所述供热模块、所述制冷模块和所述热水加热模块之间通过管道连接；所述供热模块用于利用余热热水的热量加热所述空调用水管道中的空调供暖用水；所述制冷模块用于利用余热热水的热量给所述空调用水管道中的空调制冷用水降温；所述热水加热模块用于加热所述生活用水管道中的生活用水。该装置为采暖热水、空调冷水、生活热水三联供系统,可以实现夏季供冷,冬季供暖,同时全年提供生活热水。(The invention belongs to the technical field of energy cascade utilization, and discloses a heating, air conditioning and domestic hot water triple-generation device which is respectively connected with an industrial waste heat hot water source, an air conditioning water pipeline and a domestic water pipeline, and comprises a heating module, a refrigerating module and a hot water heating module, wherein the heating module, the refrigerating module and the hot water heating module are connected through pipelines; the heat supply module is used for heating the air conditioning heating water in the air conditioning water pipeline by utilizing the heat of the waste heat hot water; the refrigerating module is used for cooling the air conditioning refrigerating water in the air conditioning water pipeline by utilizing the heat of the waste heat hot water; the hot water heating module is used for heating domestic water in the domestic water pipeline. The device is a triple supply system of heating hot water, air-conditioning cold water and domestic hot water, can realize cooling in summer and heating in winter, and simultaneously provides domestic hot water all year round.)

1. The utility model provides a heating, air conditioner, life hot water trigeminy supplies device which characterized in that: the device is respectively connected with an industrial waste heat hot water source, an air conditioning water pipeline and a domestic water pipeline, and comprises a heat supply module, a refrigeration module and a hot water heating module, wherein the heat supply module, the refrigeration module and the hot water heating module are connected through pipelines;

the heat supply module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for heating air conditioning heating water in the air conditioning water pipeline by using the heat of the waste heat hot water;

the refrigeration module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for cooling the air conditioning refrigeration water in the air conditioning water pipeline by utilizing the heat of the waste heat hot water;

the hot water heating module is respectively connected with the industrial waste heat hot water source, the heat supply module, the refrigeration module and the domestic water pipeline and is used for heating domestic water in the domestic water pipeline.

2. The triple co-generation device for heating, air conditioning and domestic hot water of claim 1, wherein:

the industrial waste hot water source conveys and recovers waste hot water through a waste hot water supply port and a waste hot water return port;

the air conditioning water pipeline conveys air conditioning heating water through an air conditioning hot water supply port and an air conditioning hot water return port; the air conditioning water pipeline conveys air conditioning refrigeration water through an air conditioning cold water supply port and an air conditioning cold water return port;

the domestic water pipeline conveys the domestic water through a tap water inlet and a domestic hot water port;

the water inlet end of the heat supply module is respectively connected with the waste hot water supply port and the air conditioner hot water return port, and the water outlet end of the heat supply module is respectively connected with the water inlet end of the hot water heating module and the air conditioner hot water supply port;

the water inlet end of the refrigerating module is respectively connected with the waste hot water supply port and the air conditioner cold water return port, and the water outlet end of the refrigerating module is respectively connected with the water inlet end of the hot water heating module and the air conditioner cold water supply port;

the water inlet end of the hot water heating module is also connected with the tap water inlet and the waste heat hot water receiving water supply port respectively, and the water outlet end of the hot water heating module is connected with the domestic hot water port and the waste heat hot water receiving water return port respectively.

3. The triple co-generation device for heating, air conditioning and domestic hot water of claim 2, wherein: the heat supply module comprises an air conditioner hot water circulating pump (1.1), a first electric two-way valve (1.2), a first heat exchanger (1.3) and a first electric regulating valve (1.4);

the air-conditioning heating water flows through the air-conditioning hot water circulating pump (1.1) and the first electric two-way valve (1.2) through pipelines, exchanges heat on the secondary side of the first heat exchanger (1.3) and then flows out; the waste heat hot water flows through the first electric regulating valve (1.4) through a pipeline and flows out after heat exchange at the primary side of the first heat exchanger (1.3).

4. The triple co-generation device for heating, air conditioning and domestic hot water of claim 3, wherein: the refrigeration module includes: the system comprises an air-conditioning cold water circulating pump (2.1), a second electric two-way valve (2.2), a low-temperature hot water type lithium bromide refrigerator (2.3), a third electric two-way valve (2.4), a cooling water circulating pump (2.5), a cooling tower (2.6) and a second electric regulating valve (2.7);

the air-conditioning refrigeration water flows through the air-conditioning cold water circulating pump (2.1) and the second electric two-way valve (2.2) through pipelines and enters the low-temperature hot water type lithium bromide refrigerator (2.3) for treatment to obtain the air-conditioning refrigeration water with lower temperature; the waste heat hot water flows through the second electric regulating valve (2.7) through a pipeline, enters the low-temperature hot water type lithium bromide refrigerator (2.3) for treatment and then flows out; the low-temperature hot water type lithium bromide refrigerator (2.3) is connected with the cooling tower (2.6) through a pipeline, and the third electric two-way valve (2.4) and the cooling water circulating pump (2.5) are arranged on a pipeline entering the cooling tower (2.6).

5. The triple co-generation device for heating, air conditioning and domestic hot water of claim 4, wherein: the hot water heating module includes: a domestic hot water circulating pump (3.1), a fourth electric two-way valve (3.2), a second heat exchanger (3.3), a third heat exchanger (3.4) and a third electric regulating valve (3.5);

the domestic water flows through the domestic hot water circulating pump (3.1) and the fourth electric two-way valve (3.2) through pipelines, sequentially enters the second heat exchanger (3.3) and the secondary side of the third heat exchanger (3.4) for heat exchange, and then flows out; the waste heat hot water flows through the third electric regulating valve (3.5) through a pipeline and flows out after heat exchange at the primary side of the third heat exchanger (3.4).

6. The triple co-generation device for heating, air conditioning and domestic hot water of claim 5, wherein:

the device also comprises a fourth electric regulating valve (4) and a fifth electric regulating valve (5);

4 paths of the waste heat hot water, wherein 1 path of the waste heat hot water enters the primary side of the second heat exchanger (3.3) of the hot water heating module, wherein 1 path of the waste heat hot water enters the primary side of the third heat exchanger (3.4) of the hot water heating module, wherein 1 path of the waste heat hot water enters the primary side of the first heat exchanger (1.3) of the heat supply module, and wherein 1 path of the waste heat hot water enters a hot water inlet of the low-temperature hot water type lithium bromide refrigerator (2.3) of the refrigeration module;

the primary side water outlet of the first heat exchanger (1.3) of the heat supply module or the waste heat hot water outlet of the refrigeration module is divided into two paths, wherein one path flows through the fourth electric regulating valve (4) and then is connected to the waste heat hot water return port; one path of the waste heat water flows through the fifth electric regulating valve (5) and enters the hot water heating module, and then the waste heat water receiving and returning port is connected to the second heat exchanger (3.3) of the hot water heating module after heat exchange.

7. The triple co-generation device for heating, air conditioning and domestic hot water of claim 2, wherein: the modules of the device are integrated into a single module.

8. A control method of a heating, air-conditioning and domestic hot water triple supply device, which is used for controlling the heating, air-conditioning and domestic hot water triple supply device as claimed in any one of claims 1 to 7, and is characterized by comprising the following steps: acquiring an external instruction signal; and controlling the opening and closing of the heat supply module, the refrigeration module and the hot water heating module according to the external instruction signal so as to form different cooling and heating medium circulation flow paths among the triple co-generation device, the industrial waste heat hot water source, the air conditioning water pipeline and the domestic water pipeline.

Technical Field

The invention relates to the technical field related to energy cascade utilization, in particular to a heating, air-conditioning and domestic hot water triple-generation device and a control method.

Background

In the production process of other industrial production industries such as traditional petrifaction industry, building material industry, electric power industry and the like, a large amount of low-grade waste heat resources are associated, and because the waste heat resources are not high in taste, the waste heat resources are usually discarded and not utilized, or the utilization form is single, the utilization depth is not enough, and a large amount of energy waste is caused.

In the aspect of winter heating, summer cooling and all-year-round living hot water supply, the traditional industrial production industry is often independent and unrelated to a heating system, an air conditioner and a living hot water system on one hand; on the other hand, the driving energy sources adopted by the cold sources of winter heating, domestic hot water and air conditioners mainly consume high-grade electric energy and steam heat energy, and the energy consumption time of the industrial production industry is relatively long, so that the corresponding high-grade energy consumption is relatively large, and the energy conservation and emission reduction in the industrial production field are not facilitated.

According to the actual situation, the waste heat resources are not high in taste due to process production and the like, the temperature of waste heat hot water discharged in the industrial production process is not too high, and how to fully develop the low-grade heat energy by a proper method and deeply utilize the low-grade heat energy to provide heating hot water, air-conditioning cold water and all-year-round life hot water for the outside world greatly reduces the energy consumption of auxiliary systems in the industrial production field. In view of the above, the present invention is directed to a low-temperature hot water driven heating, air conditioning and domestic hot water triple supply device suitable for a 9H-type natural gas power plant.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides a low-temperature hot water driven heating, air conditioning and domestic hot water triple supply device and a control method suitable for a 9H type natural gas power plant, which can realize cooling in summer and heating in winter and simultaneously supply domestic hot water all year round.

In order to achieve the purpose, the invention is realized by adopting the following technical scheme:

in a first aspect, the invention provides a heating, air conditioning and domestic hot water triple supply device, which is respectively connected with an industrial waste heat hot water source, an air conditioning water pipeline and a domestic water pipeline, and comprises a heating module, a refrigerating module and a hot water heating module, wherein the heating module, the refrigerating module and the hot water heating module are connected through pipelines; the heat supply module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for heating air conditioning heating water in the air conditioning water pipeline by using the heat of the waste heat hot water; the refrigeration module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for cooling the air conditioning refrigeration water in the air conditioning water pipeline by utilizing the heat of the waste heat hot water; the hot water heating module is respectively connected with the industrial waste heat hot water source, the heat supply module, the refrigeration module and the domestic water pipeline and is used for heating domestic water in the domestic water pipeline.

Further, the industrial waste heat hot water source conveys and recovers waste heat hot water through a waste heat hot water supply port and a waste heat hot water return port; the air conditioning water pipeline conveys air conditioning heating water through an air conditioning hot water supply port and an air conditioning hot water return port; the air conditioning water pipeline conveys air conditioning refrigeration water through an air conditioning cold water supply port and an air conditioning cold water return port; the domestic water pipeline conveys the domestic water through a tap water inlet and a domestic hot water port; the water inlet end of the heat supply module is respectively connected with the waste hot water supply port and the air conditioner hot water return port, and the water outlet end of the heat supply module is respectively connected with the water inlet end of the hot water heating module and the air conditioner hot water supply port; the water inlet end of the refrigerating module is respectively connected with the waste hot water supply port and the air conditioner cold water return port, and the water outlet end of the refrigerating module is respectively connected with the water inlet end of the hot water heating module and the air conditioner cold water supply port; the water inlet end of the hot water heating module is also connected with the tap water inlet and the waste heat hot water receiving water supply port respectively, and the water outlet end of the hot water heating module is connected with the domestic hot water port and the waste heat hot water receiving water return port respectively.

Further, the heat supply module comprises an air conditioner hot water circulating pump, a first electric two-way valve, a first heat exchanger and a first electric adjusting valve; the air-conditioning heating water flows through the air-conditioning hot water circulating pump and the first electric two-way valve through pipelines and flows out after heat exchange at the secondary side of the first heat exchanger; the waste heat hot water flows through the first electric regulating valve through a pipeline and flows out after heat exchange at the primary side of the first heat exchanger.

Further, the refrigeration module includes: the system comprises an air conditioner cold water circulating pump, a second electric two-way valve, a low-temperature hot water type lithium bromide refrigerator, a third electric two-way valve, a cooling water circulating pump, a cooling tower and a second electric regulating valve; the air-conditioning refrigeration water flows through the air-conditioning cold water circulating pump and the second electric two-way valve through pipelines and enters the low-temperature hot water type lithium bromide refrigerator for treatment to obtain air-conditioning refrigeration water with lower temperature; the waste heat hot water flows through the second electric regulating valve through a pipeline, enters the low-temperature hot water type lithium bromide refrigerator for treatment and then flows out; the low-temperature hot water type lithium bromide refrigerator is connected with the cooling tower through a pipeline, and the third electric two-way valve and the cooling water circulating pump are arranged on the pipeline entering the cooling tower.

Further, the hot water heating module includes: the domestic hot water circulating pump, the fourth electric two-way valve, the second heat exchanger, the third heat exchanger and the third electric regulating valve; the domestic water flows through the domestic hot water circulating pump and the fourth electric two-way valve through pipelines, sequentially enters the second heat exchanger and the secondary side of the third heat exchanger for heat exchange, and then flows out; the waste heat hot water flows through the third electric regulating valve through a pipeline and flows out after heat exchange at the primary side of the third heat exchanger.

Further, the device also comprises a fourth electric control valve and a fifth electric control valve; 4 paths of residual heat hot water, wherein 1 path of residual heat hot water enters the primary side of the second heat exchanger of the hot water heating module, wherein 1 path of residual heat hot water enters the primary side of the third heat exchanger of the hot water heating module, wherein 1 path of residual heat hot water enters the primary side of the first heat exchanger of the heat supply module, and wherein 1 path of residual heat hot water enters a hot water inlet of the low-temperature hot water type lithium bromide refrigerator of the refrigeration module; the primary side water outlet of the first heat exchanger of the heat supply module or the waste heat hot water outlet of the refrigeration module is divided into two paths, and one path of water flows through the fourth electric regulating valve and is connected with a waste heat hot water return port; one path of the waste hot water flows through the fifth electric regulating valve and enters the hot water heating module, and then the waste hot water receiving return port is connected to the second heat exchanger of the hot water heating module after heat exchange.

Further, the modules of the device are integrated into a single module.

In a second aspect, the present invention provides a method for controlling a heating, air-conditioning and domestic hot water triple-generation device, for controlling the heating, air-conditioning and domestic hot water triple-generation device, including the following steps: acquiring an external instruction signal; and controlling the opening and closing of the heat supply module, the refrigeration module and the hot water heating module according to the external instruction signal so as to form different cooling and heating medium circulation flow paths among the triple co-generation device, the industrial waste heat hot water source, the air conditioning water pipeline and the domestic water pipeline.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention can fully increase the temperature difference between the supply water and the return water of the primary heating hot water in winter and summer, realize the cascade utilization of energy and reduce the energy consumption for conveying the primary heating hot water. The energy-saving device has the advantages that the low-grade waste heat energy can be deeply recovered while flexible, reliable and composite energy supply is carried out, energy is saved to the maximum extent, the device has the characteristics of compact structure, convenience in operation and control, strong adaptability and the like, and the device is particularly suitable for application in occasions with low-grade waste heat energy;

2. in the technical scheme of the invention, five operation modes such as independent heating of a heating module, independent cooling of a refrigerating module, independent domestic hot water supply of a hot water heating module, operation of the heating module in combination with a hot water heating module, operation of the refrigerating module in combination with the hot water heating module and the like can be realized;

3. according to the invention, under two operating conditions that the heat supply module is operated in combination with the hot water heating module and the refrigeration module is operated in combination with the hot water heating module, the system can fully increase the temperature difference between the supply water and the return water of waste heat hot water, reduce the conveying energy consumption of the waste heat hot water, realize the cascade utilization of energy, save the energy to the maximum extent and realize the deep recycling of low-grade waste heat energy;

4. the heating module, the refrigerating module and the hot water heating module are connected into an integrated heating, air conditioning and domestic hot water triple supply device through pipelines, all switching valves are electric valves and are controlled in a unified manner, and the integrated heating, air conditioning and domestic hot water triple supply device is flexible and reliable to execute, compact in structure and convenient to operate and control.

Drawings

Fig. 1 is a schematic structural diagram of a heating, air conditioning and domestic hot water triple supply device of the invention.

In the figure:

1.1, an air-conditioning hot water circulating pump; 1.2, a first electric two-way valve; 1.3, a first heat exchanger; 1.4, a first electric regulating valve; 2.1, an air conditioner cold water circulating pump; 2.2, a second electric two-way valve; 2.3, a low-temperature hot water type lithium bromide refrigerator; 2.4, a third electric two-way valve; 2.5, a cooling water circulating pump; 2.6, cooling tower; 2.7, a second electric regulating valve; 3.1, a domestic hot water circulating pump; 3.2, a fourth electric two-way valve; 3.3, a second heat exchanger; 3.4, a third heat exchanger; 3.5, a third electric control valve; 4. a fourth electric control valve; 5. a fifth electric control valve; 6. and a sixth electric control valve.

Detailed Description

The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

The first embodiment is as follows:

the embodiment provides a heating, air conditioning and domestic hot water triple-generation device, which is respectively connected with an industrial waste heat hot water source, an air conditioning water pipeline and a domestic water pipeline, and comprises a heat supply module, a refrigeration module and a hot water heating module, wherein the heat supply module, the refrigeration module and the hot water heating module are connected through pipelines; the heat supply module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for heating air conditioning heating water in the air conditioning water pipeline by using the heat of the waste heat hot water; the refrigeration module is respectively connected with the industrial waste heat hot water source and the air conditioning water pipeline and is used for cooling the air conditioning refrigeration water in the air conditioning water pipeline by utilizing the heat of the waste heat hot water; the hot water heating module is respectively connected with the industrial waste heat hot water source, the heat supply module, the refrigeration module and the domestic water pipeline and is used for heating domestic water in the domestic water pipeline.

This embodiment belongs to a low temperature hot water driven heating, air conditioner, the hot water trigeminy of life supply device suitable for 9H type natural gas power plant, and the device is heating hot water, air conditioner cold water, the hot water trigeminy of life supplies the system, can realize the cooling in summer, and the winter heating provides life hot water simultaneously throughout the year. The invention can fully increase the temperature difference between the supply water and the return water of the primary heating hot water in winter and summer, realize the cascade utilization of energy and reduce the energy consumption for conveying the primary heating hot water. The energy-saving device has the advantages of being flexible and reliable in execution, achieving deep recovery of low-grade waste heat energy, saving energy to the maximum extent, having the characteristics of compact structure, convenience in operation and control, strong adaptability and the like, and being particularly suitable for application in occasions with low-grade waste heat energy.

Specifically, the industrial waste heat hot water source conveys and recovers waste heat hot water through a waste heat hot water supply port and a waste heat hot water return port; the air conditioning water pipeline conveys air conditioning heating water through an air conditioning hot water supply port and an air conditioning hot water return port; and the air conditioning water pipeline conveys air conditioning refrigeration water through an air conditioning cold water supply port and an air conditioning cold water return port.

The water inlet end of the heat supply module is respectively connected with the waste hot water supply port and the air conditioner hot water return port, and the water outlet end of the heat supply module is respectively connected with the water inlet end of the hot water heating module and the air conditioner hot water supply port; the water inlet end of the refrigerating module is respectively connected with the waste hot water supply port and the air conditioner cold water return port, and the water outlet end of the refrigerating module is respectively connected with the water inlet end of the hot water heating module and the air conditioner cold water supply port; the water inlet end of the hot water heating module is also connected with the tap water inlet and the waste heat hot water receiving water supply port respectively, and the water outlet end of the hot water heating module is connected with the domestic hot water port and the waste heat hot water receiving water return port respectively.

Specifically, the heat supply module comprises an air conditioner hot water circulating pump 1.1, a first electric two-way valve 1.2 (V1), a first heat exchanger 1.3 (H1) and a first electric regulating valve 1.4 (VTJ 1); the air-conditioning heating water flows through the air-conditioning hot water circulating pump 1.1 and the first electric two-way valve 1.2 (V1) through pipelines, and flows out after heat exchange at the secondary side of the first heat exchanger 1.3 (H1); the waste heat hot water flows through the first electric regulating valve 1.4 (VTJ 1) through a pipeline and flows out after being subjected to heat exchange at the primary side of the first heat exchanger 1.3 (H1).

Specifically, the refrigeration module includes: an air-conditioning cold water circulating pump 2.1, a second electric two-way valve 2.2 (V2.1), a low-temperature hot water type lithium bromide refrigerator 2.3, a third electric two-way valve 2.4 (V2.2), a cooling water circulating pump 2.5, a cooling tower 2.6 and a second electric regulating valve; the air-conditioning refrigeration water flows through the air-conditioning cold water circulating pump 2.1 and the second electric two-way valve 2.2 (V2.1) through pipelines and enters the low-temperature hot water type lithium bromide refrigerator 2.3 for treatment to obtain air-conditioning refrigeration water with lower temperature; the waste heat hot water flows through the second electric regulating valve through a pipeline, enters the low-temperature hot water type lithium bromide refrigerator for treatment 2.3 and then flows out; the low-temperature hot water type lithium bromide refrigerator 2.3 is connected with the cooling tower 2.6 through a pipeline, and the third electric two-way valve 2.4 (V2.2) and the cooling water circulating pump 2.5 are installed on the pipeline entering the cooling tower 2.6.

Specifically, the hot water heating module includes: a domestic hot water circulating pump 3.1, a fourth electric two-way valve 3.2 (V3), a second heat exchanger 3.3 (H2), a third heat exchanger 3.4 (H3) and a third electric regulating valve 3.5 (VTJ 3); the domestic water flows through the domestic hot water circulating pump 3.1 and the fourth electric two-way valve 3.2 (V3) through pipelines, sequentially enters the secondary sides of the second heat exchanger 3.3 (H2) and the third heat exchanger 3.4 (H3) for heat exchange, and then flows out; the waste heat hot water flows through the third electric regulating valve 3.5 (VTJ 3) through a pipeline and flows out after being subjected to heat exchange at the primary side of the third heat exchanger 3.4 (H3).

Specifically, the device further comprises a fourth electric regulating valve 4 (VTJ 4) and a fifth electric regulating valve 5 (VTJ 5); the residual heat hot water comprises 4 paths, wherein 1 path enters the primary side of the second heat exchanger 3.3 (H2) of the hot water heating module, wherein 1 path enters the primary side of the third heat exchanger 3.4 (H3) of the hot water heating module, wherein 1 path enters the primary side of the first heat exchanger 1.3 (H1) of the heat supply module, and wherein 1 path enters the hot water inlet of the low-temperature hot water type lithium bromide refrigerator 2.3 of the refrigeration module; the primary side water outlet of the first heat exchanger 1.3 (H1) of the heat supply module or the waste heat hot water outlet of the refrigeration module is divided into two paths, and one path of water flows through the fourth electric regulating valve 4 (VTJ 4) and is connected with a waste heat hot water return port; one path of the waste heat hot water enters the hot water heating module through the fifth electric regulating valve 5 (VTJ 5), and then is connected with the waste heat hot water return port after heat exchange of the second heat exchanger 3.3 (H2) of the hot water heating module.

In particular, the modules of the device are integrated into a single module.

Through the embodiment, the temperature difference between the supply water and the return water of the primary heating hot water can be fully increased in winter and summer, the energy cascade utilization is realized, and the energy consumption for conveying the primary heating hot water is reduced. The energy-saving device has the advantages that the low-grade waste heat energy can be deeply recovered while flexible, reliable and composite energy supply is carried out, energy is saved to the maximum extent, the device has the characteristics of compact structure, convenience in operation and control, strong adaptability and the like, and the device is particularly suitable for application in occasions with low-grade waste heat energy; the embodiment can also realize five operation modes, such as independent heating of the heating module, independent cooling of the refrigerating module, independent domestic hot water supply of the hot water heating module, operation of the heating module in combination with the hot water heating module, and operation of the refrigerating module in combination with the hot water heating module;

in the embodiment, the heating module, the refrigerating module and the hot water heating module are connected into an integrated heating, air conditioning and domestic hot water triple co-generation device through pipelines, all switching valves are electrically operated valves and are controlled in a unified manner, the execution is flexible and reliable, the structure is compact, and the control is convenient.

On the heating, air conditioning and domestic hot water triple-generation device shown in the attached figure 1, the heat supply module independently supplies heat: the air-conditioning hot water circulating pump 1.1, the first electric two-way valve 1.2 (V1), the first electric regulating valve 1.4 (VTJ 1) and the fourth electric regulating valve 4 (VTJ 4) are all opened, and other equipment and valves are all closed. The waste heat hot water with the temperature of 70 ℃ is returned to the waste heat hot water through a first electric regulating valve 1.4 (VTJ 1), a first heat exchanger 1.3 (H1) and a fourth electric regulating valve 4 (VTJ 4), and secondary side heat exchange of the first heat exchanger 1.3 (H1) generates air-conditioning hot water with the temperature of 60 ℃.

As shown in fig. 1, the refrigeration module is used for independent cooling: the air-conditioning cold water circulating pump 2.1, the second electric two-way valve 2.2 (V2.1), the low-temperature hot water type lithium bromide refrigerator 2.3, the third electric two-way valve 2.4 (V2.2), the cooling water circulating pump 2.5, the cooling tower 2.6 and the second electric regulating valve are all opened, and other equipment and valves are all closed. The waste heat hot water with the temperature of 70 ℃ passes through the second electric regulating valve, the low-temperature hot water type lithium bromide refrigerator 2.3 and the fourth electric regulating valve 4 (VTJ 4) and then is returned to the waste heat hot water, and the air conditioner refrigeration water with the temperature of 12 ℃ passes through the low-temperature hot water type lithium bromide refrigerator 2.3 and then generates air conditioner cold water with the temperature of 7 ℃ for water supply.

As shown in fig. 1, the hot water heating module is used for supplying domestic hot water independently: the domestic hot water circulating pump 3.1, the fourth electric two-way valve 3.2 (V3) and the third electric regulating valve 3.5 (VTJ 3) are all opened, and other equipment and valves are all closed. A2-stage heat exchanger is arranged in the hot water heating module, a second heat exchanger 3.3 (H2) is a preheater, a third heat exchanger 3.4 (H3) is a reheater, 1 path of waste heat hot water at 70 ℃ is changed into hot water at about 58 ℃ after heat exchange through the preheating second heat exchanger 3.3 (H2) and then is connected with the waste heat hot water backwater, and the other 1 path of waste heat hot water is changed into hot water at about 58 ℃ after heat exchange through the reheating third heat exchanger 3.4 (H3) and then is connected with the waste heat hot water backwater.

As shown in fig. 1, the heating module is combined with the hot water heating module to operate: the air-conditioning hot water circulating pump 1.1, the first electric two-way valve 1.2 (V1), the first electric regulating valve 1.4 (VTJ 1), the fifth electric regulating valve 5 (VTJ 5), the domestic hot water circulating pump 3.1, the fourth electric two-way valve 3.2 (V3) and the third electric regulating valve 3.5 (VTJ 3) are all opened, and other equipment and valves are all closed. After passing through a first heating heat exchanger 1.3 (H1) in a heating module, the waste heat hot water at 70 ℃ is cooled to be low-temperature hot water at 58 ℃, the low-temperature hot water at 58 ℃ enters a 1 st-stage preheating second heat exchanger 3.3 (H2) in a domestic hot water heating module to preheat the domestic hot water, and then the low-temperature hot water at 58 ℃ is continuously cooled to be hot water at about 30 ℃; the other 1 path of hot water with the residual heat of 70 ℃ is changed into hot water with the temperature of about 58 ℃ after heat exchange by a 2 nd-stage reheating third heat exchanger 3.4 (H3). The effluent of the 1 st-stage preheating second heat exchanger 3.3 (H2) at about 30 ℃ is mixed with the effluent of the 2 nd-stage reheating third heat exchanger 3.4 (H3) at about 58 ℃ and then is returned with the residual hot water. Therefore, the temperature difference between the supply water and the return water of the waste heat hot water is fully reduced under the working condition, the conveying energy consumption of the waste heat hot water is reduced, the energy cascade utilization is realized, the energy is saved to the maximum extent, and the deep recycling of the low-grade waste heat energy is realized.

As shown in fig. 1, the operation conditions of the refrigeration module and the hot water heating module are as follows: air conditioner cold water circulating pump 2.1, second electronic two-way valve 2.2 (V2.1), low temperature hot water type lithium bromide refrigerator 2.3, third electronic two-way valve 2.4 (V2.2), cooling water circulating pump 2.5, cooling tower 2.6, second electric control valve, fifth electric control valve 5 (VTJ 5), life hot water circulating pump 3.1, fourth electronic two-way valve 3.2 (V3) and third electric control valve 3.5 (VTJ 3) all open, other equipment and valve are closed entirely. The waste heat hot water with the temperature of 70 ℃ is cooled to be low-temperature hot water with the temperature of 58 ℃ after passing through a low-temperature hot water type lithium bromide refrigerator 2.3, the low-temperature hot water with the temperature of 58 ℃ enters a 1 st-stage preheating second heat exchanger 3.3 (H2) in the domestic hot water heating module to preheat the domestic hot water, and then the low-temperature hot water with the temperature of 58 ℃ is continuously cooled to be hot water with the temperature of about 30 ℃; the other 1 path of hot water with the residual heat of 70 ℃ is changed into hot water with the temperature of about 58 ℃ after heat exchange by a 2 nd-stage reheating third heat exchanger 3.4 (H3). The effluent of the 1 st-stage preheating second heat exchanger 3.3 (H2) at about 30 ℃ is mixed with the effluent of the 2 nd-stage reheating third heat exchanger 3.4 (H3) at about 58 ℃ and then is returned with the residual hot water. Therefore, the temperature difference between the supply water and the return water of the waste heat hot water is fully reduced under the working condition, the conveying energy consumption of the waste heat hot water is reduced, the energy cascade utilization is realized, the energy is saved to the maximum extent, and the deep recycling of the low-grade waste heat energy is realized.

Example two:

the embodiment provides a control method of a heating, air-conditioning and domestic hot water triple supply device, which is used for controlling the heating, air-conditioning and domestic hot water triple supply device in the first embodiment and comprises the following steps: acquiring an external instruction signal; according to the external instruction signal, the opening and closing of the heat supply module, the refrigeration module and the hot water heating module are controlled to form different cooling and heating medium circulation flow paths among the triple co-generation device, the industrial waste heat hot water source, the air conditioning water pipeline and the domestic water pipeline, so that five operation modes of independent heating of the heat supply module, independent cooling of the refrigeration module, independent domestic hot water supply of the hot water heating module, combined hot water heating module operation of the heat supply module, combined hot water heating module operation of the refrigeration module and the like can be realized;

in the embodiment, under two operating conditions that the heat supply module is operated in combination with the hot water heating module and the refrigeration module is operated in combination with the hot water heating module, the system can fully increase the temperature difference between the supply water and the return water of the waste heat hot water, reduce the conveying energy consumption of the waste heat hot water, realize the cascade utilization of energy, save the energy to the maximum extent and realize the deep recycling of low-grade waste heat energy;

the embodiment can connect the heating module, the refrigerating module and the hot water heating module into an integrated heating, air conditioning and domestic hot water triple co-generation device through pipelines, all switching valves are electrically operated valves, and the device is controlled in a unified manner, flexible and reliable in execution, compact in structure and convenient to control.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the invention, "plurality" means two or more unless explicitly specifically defined otherwise.

In the present invention, unless otherwise specifically stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly above and obliquely above the second feature, or simply meaning that the first feature is at a lesser level than the second feature.

In the description herein, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made in the above embodiments by those of ordinary skill in the art without departing from the principle and spirit of the present invention.