Steam condensate water recycling system

Abstract

The utility model discloses a steam condensate water recycling system which comprises a steam-water heat exchange unit, a water-water heat exchange unit, a condensate water recycling device and a reclaimed water tank, and the condensate water recycling device is connected with the steam-water heat exchange unit through a first conveying pipe. And high-temperature condensate water in the steam-water heat exchange unit enters the condensate water recovery device to be collected. The water-water heat exchange unit is arranged at the rear end of the water return pipeline of the steam-water heat exchange unit, so that water after steam-water heat exchange enters the water-water heat exchange unit, and meanwhile, high-temperature condensate water recovered by the condensate water recovery device is connected with the water-water heat exchange unit, so that the condensate water and heat supply tail end return water are subjected to heat exchange in the water-water heat exchange unit; and meanwhile, hot water obtained after water-water heat exchange is conveyed into the displacement heat exchanger through a fourth conveying pipe, and tap water supplementing water of domestic hot water is preheated for use.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam condensate water recycling technical field, specifically related to a steam condensate water recycling system. BACKGROUND

[0002] Steam is widely used in industrial production, power generation and central heating and many other fields, the use of steam not only improves production efficiency, but also promotes the progress and development of technology. In the use of steam, part of the steam is directly used for its heat energy, and the condensate water needs to be discharged after cooling. According to the relevant requirements, the condensate water discharge temperature should not be higher than 40 DEG C. The common method is to set up a cooling pool to reduce the water temperature and then discharge, which causes waste of water resources. The steam-water heat exchange unit is responsible for the heat source of the air conditioning system, and the supply and return water temperature at the end of the air conditioning system is 50 DEG C / 40 DEG C. The condensate water discharge temperature is about 80 DEG C, which is much higher than the discharge temperature requirement. Therefore, the condensate water discharge needs to set up a cooling pool, which increases the cost and causes waste of energy and resources. SUMMARY

[0003] In view of the steam condensate water recycling use in the prior art, it is expected to provide a steam condensate water recycling system to solve the technical problems that the existing steam condensate water cannot be recovered and utilized in a stepped manner, and the recovered condensate water is not utilized, thereby reducing the waste of energy and water resources, and avoiding the setting of the cooling pool, thereby reducing the occupation of the internal space of the project.

[0004] According to the technical scheme provided by the embodiment of the present application, a steam condensate water recycling system comprises a steam-water heat exchange unit, a water-water heat exchange unit, a condensate water recovery device and a reclaimed water tank. The condensate water recovery device is connected with the steam-water heat exchange unit through a first conveying pipe, so that the high-temperature condensate water in the steam-water heat exchange unit enters the condensate water recovery device for collection. The water-water heat exchange unit is connected with the heating return water main through a second conveying pipe, so that part of the return water at the heating end enters the water-water heat exchange unit from the second conveying pipe. The condensate water recovery device is connected with the water-water heat exchange unit through a third conveying pipe, so that the condensate water and the heat water after heat exchange are secondarily heat exchanged.

[0005] The volumetric heat exchanger is connected with the water-water heat exchange unit through a fourth conveying pipe, so that the heat water after heat exchange of the water-water heat exchange unit is conveyed into the volumetric heat exchanger from the fourth conveying pipe, and the tap water for domestic hot water is preheated for use.

[0006] The reclaimed water tank is connected with the volumetric heat exchanger through a fifth conveying pipe, so that the water liquid after heat exchange of the volumetric heat exchanger is conveyed into the reclaimed water tank from the fifth conveying pipe, and is used for reclaimed water.

[0007] Further, the steam-water heat exchanger unit is connected with the steam pipeline through a first connecting pipe, and is connected with the heating terminal equipment through a second connecting pipe.

[0008] Further, the reclaimed water tank is connected with the municipal reclaimed water pipeline through a third connecting pipe, and is connected with the reclaimed water terminal equipment through a fourth connecting pipe.

[0009] Further, the water-water heat exchanger unit and the reclaimed water tank are further provided with a volumetric heat exchanger, and the volumetric heat exchanger is connected with the tap water pipeline through a fifth connecting pipe.

[0010] Further, the tap water pipeline is connected with the water softening device through a sixth connecting pipe.

[0011] Further, the water softening device is connected with the constant pressure water supplementing device through a seventh connecting pipe, and the constant pressure water supplementing device is connected with the backwater pipe on the steam-water heat exchanger unit through an eighth connecting pipe and a ninth connecting pipe, for constant pressure water supplementing of the backwater pipe.

[0012] To sum up, the beneficial effects of the present application are:

[0013] I. By arranging the water-water heat exchanger unit at the back end of the backwater pipeline of the steam-water heat exchanger unit, the water liquid after steam-water heat exchange enters the water-water heat exchanger unit, and the high-temperature condensed water recovered by the condensed water recovery device is connected with the water-water heat exchanger unit, so that the condensed water and the backwater of the heating terminal are heat-exchanged in the water-water heat exchanger unit, the heat of the steam condensed water is utilized, the hot water after water-water heat exchange is transported into the volumetric heat exchanger through the fourth conveying pipe, the tap water for life hot water supplementing is preheated for use, the condensed hot water after heat exchange in the volumetric heat exchanger is transported into the reclaimed water tank through the fifth conveying pipe, and is used for reclaimed water, so that the steam condensed water is stepwise recovered and utilized, and the waste of energy and water source is reduced.

[0014] II. After the steam condensed water is stepwise recovered and utilized, the water liquid after multi-stage heat exchange is connected with the reclaimed water tank, the water liquid cooled to 25 DEG C can be used for washing and toilet flushing in life water, the setting of the cooling pool is avoided, the internal space of the project is reduced, and the waste of energy and water source is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Other characteristics, objects and advantages of the present application will become more apparent after reading the detailed description of the non-restrictive embodiments made with reference to the following drawings:

[0016] Figure 1 It is a structure schematic view of the steam condensed water recycling system.

[0017] The figure shows the following: steam-water heat exchanger unit 100, water-water heat exchanger unit 200, condensate water recovery device 300, reclaimed water tank 400, steam pipeline 500, heating terminal device 600, municipal reclaimed water pipeline 700, reclaimed water terminal device 800, volumetric heat exchanger 900, tap water pipeline 1000, soft water device 1100, and constant pressure water supply device 1100. DETAILED DESCRIPTION

[0018] The application will be further described below in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the application, and not to limit the application. In addition, it should be noted that only parts related to the application are shown in the drawings for ease of description.

[0019] It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. The application will be described in detail below with reference to the accompanying drawings and embodiments.

[0020] A steam condensate water recycling system, as shown in Figure 1 the accompanying drawings, comprises a steam-water heat exchanger unit 100, a water-water heat exchanger unit 200, a condensate water recovery device 300, a volumetric heat exchanger 900, and a reclaimed water tank 400. The condensate water recovery device 300 is connected to the steam-water heat exchanger unit 100 through a first conveying pipe, so that high-temperature condensate water in the steam-water heat exchanger unit 100 enters the condensate water recovery device 300 for collection. The water-water heat exchanger unit 200 is connected to the steam-water heat exchanger unit 100 through a second conveying pipe, so that heating terminal part return water enters the water-water heat exchanger unit 200 from the second conveying pipe. The condensate water recovery device 300 is connected to the water-water heat exchanger unit 200 through a third conveying pipe, so that the recovered high-temperature condensate water enters the water-water heat exchanger unit 200 for secondary heat exchange with the heating terminal return water. The hot water after secondary heat exchange in the water-water heat exchanger unit 200 is conveyed from a fourth conveying pipe into the volumetric heat exchanger 900 for preheating and using tap water for domestic hot water, so that the steam condensate water recycling system can utilize the recovered heat energy in multiple stages. The condensate water after heat exchange in the volumetric heat exchanger 900 is conveyed from a fifth conveying pipe into the reclaimed water tank 400 for use of reclaimed water, avoiding the setting of a cooling pool, thereby reducing the occupation of internal space of the project.

[0021] In the process of recycling the high-temperature condensate water generated in the heat exchange process of the steam-water heat exchanger unit 100 in the steam condensate water recycling system, the high-temperature saturated steam enters the steam-water heat exchanger unit 100 from the steam pipeline 500, and the water on the other side enters the steam-water heat exchanger unit 100 to exchange heat with the high-temperature steam. The 80°C high-temperature condensate water generated in the heat exchange process enters the condensate water recycling device 300 from the first conveying pipe for recycling, and the temperature of the backwater after heat exchange is 50°C-40°C. By connecting the water-water heat exchanger unit 200 and the steam-water heat exchanger unit 100 in parallel, the high-temperature condensate water enters the secondary water-water heat exchanger unit 200 through the condensate water recycling device 300, and the backwater of the heating terminal also enters the water-water heat exchanger unit 200, so that the high-temperature condensate water and the backwater of the heating terminal exchange heat in the water-water heat exchanger unit 200, the heat energy of the steam-water heat exchanger unit 100 is used for secondary energy utilization, and the temperature of the backwater of the water-water heat exchanger unit 200 is 45°C, which is still higher than the required discharge temperature, so that the 45°C hot water after secondary heat exchange is used for preheating of domestic hot water, and the water after secondary heat exchange is conveyed to the volumetric heat exchanger 900 through the pipeline to exchange heat with tap water in the volumetric heat exchanger 900, so that the temperature of the water after heat exchange is about 25°C, and then the water at this temperature is supplied to the intermediate water tank 400 for washing clothes or flushing toilets, etc., so that the steam condensate water recycling system realizes energy cascade utilization, thereby reducing the waste of energy and water resources, and avoiding the setting of the cooling pool, thereby reducing the occupation of the internal space of the project.

[0022] As a preferred embodiment, please refer to Figure 1 The steam-water heat exchanger unit 100 is connected with the steam pipeline 500 through the first connecting pipe, so that the high-temperature steam enters the steam-water heat exchanger unit from the first connecting pipe, and the steam-water heat exchanger unit 100 is connected with the heating terminal equipment 600 through the second connecting pipe, so that the steam-water heat exchanger unit 100 conveys the water after heat exchange into the heating terminal equipment 600 for heating.

[0023] As a preferred embodiment, please refer to Figure 1 The intermediate water tank 400 is connected with the municipal intermediate water pipeline 700 through the third connecting pipe, and the intermediate water tank 400 is connected with the intermediate water terminal equipment 800 through the fourth connecting pipe, and the intermediate water tank 400 is connected with the volumetric heat exchanger 900 through the fifth conveying pipe, so that the condensate water after cascade heat exchange is used for intermediate water, thereby reducing the waste of water resources.

[0024] As a preferred embodiment, please refer to Figure 1 The water-water heat exchanger unit 200 and the intermediate water tank 400 are further provided with the volumetric heat exchanger 900, and the volumetric heat exchanger 900 is connected with the tap water pipeline 1000 through the fifth connecting pipe, so that the hot water after secondary heat exchange enters the volumetric heat exchanger 900 to preheat the domestic water.

[0025] As a preferred embodiment, refer to Figure 1 The water pipe 1000 is connected with the soft water device 1100 through the sixth connecting pipe, the soft water device 1100 is connected with the constant pressure water supplement device 1200 through the seventh connecting pipe, and the constant pressure water supplement device 1200 is connected with the backwater pipe on the steam-water heat exchange unit 100 through the eighth connecting pipe and the ninth connecting pipe, and is used for constant pressure water supplement of the backwater pipe.

[0026] The working principle of the steam condensate water recycling system is as follows:

[0027] In the recycling process of the high-temperature condensate water generated in the heat exchange process of the steam-water heat exchange unit 100 in the steam condensate water recycling system, the high-temperature saturated steam enters the steam-water heat exchange unit 100 from the steam pipeline 500, and the water liquid on the other side enters the steam-water heat exchange unit 100 to exchange heat with the high-temperature steam, and the 80 DEG C high-temperature condensate water generated in the heat exchange process enters the condensate water recycling device 300 from the first conveying pipe for recycling, the water-water heat exchange unit 200 is connected with the steam-water heat exchange unit 100 in parallel, so that the high-temperature condensate water enters the secondary water-water heat exchange unit 200 through the condensate water recycling device 300, and part of the backwater of the heating terminal also enters the water-water heat exchange unit 200, so that the high-temperature condensate water and the backwater heat water exchange in the water-water heat exchange unit 200, the heat energy of the steam-water heat exchange unit 100 is used for secondary energy utilization, and the backwater temperature of the water-water heat exchange unit 200 is 45 DEG C, which is still higher than the required discharge temperature, so that the 45 DEG C hot water after secondary heat exchange is used for preheating of domestic hot water, and the water liquid after secondary heat exchange is conveyed to the volumetric heat exchanger 900 through the pipeline, so that the water liquid after secondary heat exchange is cooled to about 25 DEG C after heat exchange with the tap water in the volumetric heat exchanger 900, and then the water at this temperature is supplied to the middle water tank 400 and used for washing clothes or flushing, so that the steam condensate water recycling system realizes energy ladder utilization, thereby reducing the waste of energy and water source, and avoiding the setting of the cooling pool, thereby reducing the occupation of the internal space of the project.

[0028] The steam condensate water recycling system has the following beneficial effects:

[0029] I. By setting the water-water heat exchanger 200 at the rear end of the steam-water heat exchanger 100, the water after steam-water heat exchange enters the water-water heat exchanger 200, and the high-temperature condensed water recovered by the condensed water recovery device 300 is connected with the water-water heat exchanger 200, so that the condensed water and the return water of the heating end part are subjected to secondary heat exchange in the water-water heat exchanger 200, the heat of the steam condensed water is utilized, the hot water after water-water heat exchange is transported into the volumetric heat exchanger 900 through the third conveying pipe, and the water for supplementing the domestic hot water system is preheated, so that the steam condensed water is utilized in stages, and the waste of energy and resources is reduced.

[0030] II. After the steam condensed water is utilized in stages, the water after multi-stage heat exchange is connected with the reclaimed water tank 400, the water cooled to 25 DEG C can be used for washing and toilet flushing in domestic water, the setting of the cooling pool is avoided, the internal space of the project is reduced, and the waste of energy and water is reduced.

[0031] The above description is only the preferred embodiment of the application and the description of the technical principle and other schemes. Meanwhile, the utility model range involved in the application is not limited to the technical scheme formed by the specific combination of the above technical features, and should also cover other technical schemes formed by the combination of the above technical features or equivalent features without departing from the utility model concept.

Claims

1. A steam condensate water recycling system, characterized in that: it comprises a steam-water heat exchange unit (100), a water-water heat exchange unit (200), a condensate water recycling device (300), and a reclaimed water tank (400), the condensate water recycling device (300) is connected with the steam-water heat exchange unit (100) through a first conveying pipe, so that high-temperature condensate water in the steam-water heat exchange unit (100) enters the condensate water recycling device (300) for collection, the water-water heat exchange unit (200) is connected with a heating return water main through a second conveying pipe, so that heating end part return water enters the water-water heat exchange unit (200) from the second conveying pipe, and the condensate water recycling device (300) is connected with the water-water heat exchange unit (200) through a third conveying pipe, so that condensate water and heat-exchanged hot water are secondarily heat-exchanged; a volumetric heat exchanger (900) is connected with the water-water heat exchange unit (200) through a fourth conveying pipe, so that heat-exchanged hot water from the water-water heat exchange unit (200) is conveyed into the volumetric heat exchanger (900) from the fourth conveying pipe, and tap water for life hot water is preheated for use; the reclaimed water tank (400) is connected with the volumetric heat exchanger (900) through a fifth conveying pipe, so that water liquid from the volumetric heat exchanger (900) is conveyed into the reclaimed water tank (400) from the fifth conveying pipe, and is used for reclaimed water use. the steam-water heat exchange unit (100) is connected with a steam pipeline (500) through a first connecting pipe, and is connected with a heating end device (600) through a second connecting pipe.

2. The steam condensate water recycling system of claim 1, wherein: the reclaimed water tank (400) is connected with a municipal reclaimed water pipeline (700) through a third connecting pipe, and is connected with a reclaimed water end device (800) through a fourth connecting pipe.

3. The steam condensate water recycling system of claim 1, wherein: a volumetric heat exchanger (900) is further arranged between the water-water heat exchange unit (200) and the reclaimed water tank (400), and is connected with a tap water pipeline (1000) through a fifth connecting pipe.

4. The steam condensate water recycling system of claim 1, wherein: the tap water pipeline (1000) is connected with a water softening device (1100) through a sixth connecting pipe.

5. The steam condensate water recycling system of claim 4, wherein: the water softening device (1100) is connected with a constant pressure water replenishing device (1200) through a seventh connecting pipe, and the constant pressure water replenishing device (1200) is connected with a return water pipe on the steam-water heat exchange unit (100) through an eighth connecting pipe and a ninth connecting pipe, for constant pressure water replenishing of the return water pipe.

6. The steam condensate water recycling system of claim 1, wherein: ​

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