CN203385077U - Hot water supply system capable of recycling steam condensate - Google Patents

Abstract

The utility model discloses a hot water supply system for recycling steam condensed water. The system includes a hot water supply system. The hot water supply system includes a cold water pipe, a heat exchanger, a main pipe, a hot water branch pipe network and a circulation water pump, the system also includes a steam condensed water supply system, the steam condensed water supply system includes a condensed water inlet pipe, a condensed water tank, a hot water pump, a water outlet pipe, a frequency conversion cabinet, a float valve, a temperature sensor and a water level gauge, and the condensed water The water inlet pipe automatically supplies condensed water to the condensed water tank through the float valve. The condensed water tank is equipped with a temperature sensor and a water level gauge to detect the water temperature and water level of the condensed water; pipes connected. The utility model solves the technical problem of steam condensed water recovery and utilization, and is especially suitable for large hotels, restaurants and large public service organizations to solve the steam condensed water recovery and utilization occasions.

Description

A hot water supply system for recycling steam condensed water

technical field

The utility model relates to a hot water supply system, in particular to a hot water supply system for recycling steam condensed water.

Background technique

Many equipment using steam will produce a large amount of steam condensed water during the working process, such as large hotel management, hotel laundry facilities (drying, ironing equipment) and heat exchangers, some large public service institutions such as hospitals, government offices, etc. Central air-conditioning lithium bromide refrigeration units, heat exchangers, plate heaters, etc. used in buildings, etc., will generate a large amount of steam condensate during use. So far, due to various reasons, the steam condensate of many units is directly discharged without being used, resulting in a large waste of heat and polluting the environment. Although some are used, they are only used as miscellaneous water. Steam condensate has high heat and good water quality. According to the traditional recovery method, it can be recovered as boiler water. It is difficult to reinstall the steam condensate return pipe. Especially, many units use commercial steam, which basically does not meet the conditions for boiler recovery. Therefore, the above-mentioned hotels, restaurants, enterprises and institutions that use steam consume a lot of steam and energy, and the amount of steam condensed water is correspondingly large. Recycling and utilizing steam condensed water is particularly important for energy saving and emission reduction. How to make full and effective use of steam condensed water, Excavating energy-saving potential is one of the research topics of current energy-saving workers.

Utility model content

In view of this, the purpose of this utility model is to provide a hot water supply system for steam condensed water recovery and utilization, which solves the technical problem of steam condensed water recovery and utilization, and is especially suitable for large hotels, restaurants and large public service institutions to solve steam condensation. Where water is recycled.

The utility model adopts the following technical solutions:

A hot water supply system for recycling steam condensed water, the system includes a hot water supply system, the hot water supply system includes a cold water pipe, a heat exchanger, a main pipe, a hot water branch pipe network and a circulating water pump, wherein the The system also includes a steam condensate water supply system. The steam condensate water supply system includes a condensate water inlet pipe, a condensate tank, a hot water pump, a water outlet pipe, a frequency conversion cabinet, a float valve, a temperature sensor and a water level gauge. The condensate water inlet pipe passes through The float valve automatically supplies condensed water to the condensed water tank. The condensed water tank is equipped with a temperature sensor and a water level gauge to detect the temperature and level of the condensed water. The temperature sensor and the water level gauge are connected to the inverter cabinet through cables; the hot water pump is connected to the condensed water tank through pipes It is also connected to the main pipeline of the hot water supply system through the outlet pipe.

Preferably, a pressure sensor is provided on the outlet pipe of the hot water pump, and the pressure sensor is connected to the frequency conversion cabinet through a shielded cable.

Preferably, a temperature sensor is provided on the main pipe at the outlet of the heat exchanger of the hot water supply system, and the temperature sensor is connected to the frequency conversion cabinet through a signal cable.

The beneficial effects of the utility model are:

The utility model can make full use of steam condensed water as the supplementary water of the original hot water supply system, and connect with the original hot water system and connect to the grid to realize the automatic constant pressure water supply of hot water, and serve various hotels, restaurants and various public services. It provides a feasible implementation plan for key steam consuming units such as institutions to save water, reduce water consumption and steam consumption.

Description of drawings

Fig. 1 is a schematic diagram of the system principle of the present utility model.

Detailed ways

Below in conjunction with embodiment the utility model is further described:

As shown in Figure 1, the utility model is composed of a hot water supply system and a steam condensate water supply system. The original hot water supply system is modified to make full use of the steam condensate as the supplementary water for the original hot water supply system. It is also connected to the original hot water system and connected to the grid to realize automatic constant pressure water supply of hot water. The hot water supply system mainly includes a cold water pipe 1, a heat exchanger 2, a main pipe 3, a hot water branch pipe network 4, and a circulating water pump 5. The cold water pipe 1 is equipped with a pressure gauge 6 for monitoring the pressure of cold water.

The steam condensate water supply system mainly includes condensate water inlet pipe 8, condensate water tank 9, hot water pump 10, water outlet pipe 11, frequency conversion cabinet 12, float valve 13, temperature sensor 14, water level gauge 15 and pressure sensor 16. The condensed water inlet pipe 8 automatically supplies condensed water to the condensed water tank 9 through the ball float valve 13, and the ball float valve automatically closes when the condensed water in the condensed water tank is full. A temperature sensor 14 and a water level gauge 15 for detecting the water temperature and water level of the condensed water are installed on the condensed water tank 9, and are connected to the frequency conversion cabinet 12 by special signal cables 17, 18 respectively. A corresponding temperature instrument is installed on the frequency conversion cabinet 12, which can monitor the water temperature of the condensed water in real time. When the water level of the condensed water in the condensed water tank 9 reaches the lower limit, the water level gauge 15 sends a water shortage signal, and the frequency conversion cabinet 12 shuts down.

The hot water pump 10 is connected to the condensate tank 9 through the water suction pipe, and connected to the main pipe 3 of the hot water supply system through the water outlet pipe 11. The pressure sensor 16 is installed on the water outlet pipe of the hot water pump 10, and the pressure signal is fed back to the frequency conversion cabinet through the shielded cable 20 12. The frequency conversion cabinet 12 is connected with the hot water pump 10 through the main cable 19, and automatically controls the hot water pump 10 to supply water with variable frequency and constant pressure.

The hot water pump 10 can be a QDL stainless steel energy-saving light vertical multi-stage centrifugal pump with low noise, mechanical seal, easy maintenance, and applicable water temperature -15°C~120°C. The frequency converter for the frequency conversion cabinet 12 is a frequency converter with high performance and built-in PID function. It should have a built-in EMI filter to reduce harmonic interference to power supply lines and surrounding sensors, temperature instruments and other equipment.

A set of temperature sensor 7 should be installed on the hot water main pipe 3 at the outlet of the heat exchanger 2 of the hot water supply system, and connected with the frequency conversion cabinet 12 through a special signal cable 21. The frequency conversion cabinet 12 is equipped with a corresponding temperature instrument for real-time monitoring of heat The hot water temperature of the main hot water pipe at the outlet of the exchanger 2. The temperature meter can set the upper limit of the temperature. When the hot water temperature is higher than the upper limit of the set temperature, an alarm signal will be output to the PLC in the frequency conversion cabinet, and the PLC will control the frequency converter to automatically reduce condensation. The running frequency and flow rate of the water pump prevent the hot water outlet temperature from being too high, such as over 80°C, from damaging the hot water pipeline.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model without limitation, other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solution of the utility model, as long as they do not depart from the technical solution of the utility model The spirit and scope should be included in the claims of the present utility model.

Claims (3)

1. the hot water supply system that a reclamation of condensate water is utilized, this system comprises hot water supply system, described hot water supply system comprises cold water pipe, heat exchanger, main pipeline, Hot water branch pipe network and water circulating pump, it is characterized in that: this system also comprises the steam condensation water supply system, described steam condensation water supply system comprises the condensed water water inlet pipe, condensation water tank, heat-exchanger pump, outlet pipe, frequency conversion tank, ball-cock assembly, temperature sensor and limnimeter, described condensed water water inlet pipe is supplied condensed water by ball-cock assembly automatically to condensation water tank, condensation water tank is provided with temperature sensor and the limnimeter that detects condensed water water temperature and water level, temperature sensor is connected with frequency conversion tank by cable respectively with limnimeter, heat-exchanger pump is connected with condensation water tank by pipeline, and is connected with the hot water supply system main pipeline by outlet pipe.

2. the hot water supply system that a kind of reclamation of condensate water according to claim 1 is utilized, it is characterized in that: described heat-exchanger pump outlet pipe is provided with pressure sensor, and described pressure sensor is connected with frequency conversion tank through shielded cable.

3. the hot water supply system that a kind of reclamation of condensate water as claimed in claim 1 or 2 is utilized, it is characterized in that: the main pipeline of the heat exchanger exit of described hot water supply system is provided with temperature sensor, and described temperature sensor is connected with frequency conversion tank through signal cable.

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