CN102519274A - Intelligent Boiler Waste Heat Recovery and Utilization System - Google Patents

Abstract

Intelligent boiler waste heat recovery utilizes system, including waste heat recovery device, be provided with the heat exchange tube in its heat transfer chamber, the heat transfer chamber is linked together with holding water box, waste heat recovery device's air inlet and air outlet department are provided with entry flue gas thermodetector and export flue gas thermodetector respectively, waste heat recovery device's heat transfer chamber department still is provided with the temperature detector, be provided with holding water box temperature detector and liquid level detector in the holding water box, holding water box still communicates with the moisturizing pipeline that is provided with electronic moisturizing valve, holding water box's lower extreme is provided with blowoff valve and outlet pipe way, foretell waste heat recovery device, entry flue gas thermodetector, export flue gas thermodetector, the temperature detector, holding water box temperature detector, liquid level detector and water pump are. The system has the advantages of simple structure, ingenious design, reasonable layout, real-time monitoring of various indexes in the system, corresponding adjustment according to actual needs and the like.

Description

Intelligent Boiler Waste Heat Recovery and Utilization System

technical field

The invention relates to a waste heat recovery and utilization system, in particular to an intelligent boiler waste heat recovery and utilization system.

Background technique

With the rapid development of the world economy, the energy consumption is increasing day by day, and the energy crisis and environmental pollution caused by it have been paid more and more attention by people. While researching, developing and utilizing new energy and clean energy, people pay more and more attention to the utilization of waste heat. By recovering the waste heat in the flue gas of thermal equipment, the energy utilization rate can be improved, the energy consumption can be reduced, and the pollution to the environment can also be reduced. At present, due to the limitation of heat source temperature in my country, most waste heat recovery technologies are still scattered and exist in the design and application of individual projects in the form of technical equipment. For example, the patent number is: ZL201020183475.6, and the Chinese patent titled: boiler waste heat recovery and utilization device has disclosed a device that uses high-temperature waste flue gas to heat the medium, but the design of this product is mainly based on the size of the supporting boiler The size and function of the equipment are single, the safety protection measures are simple, and the control system lacks humanization, which cannot meet the requirements of users for fully automatic operation, safety and reliability, and multiple functions. Therefore, there is a need for a waste heat recovery and utilization device or system that can solve the above-mentioned problems.

Contents of the invention

In order to solve the above-mentioned deficiencies in the prior art, the present invention proposes an intelligent boiler waste heat recovery and utilization system with simple structure, ingenious design, reasonable layout, real-time monitoring of various indicators in the system, and corresponding adjustments according to actual needs .

The technical solution of the present invention is: an intelligent boiler waste heat recovery and utilization system, including a waste heat recovery device 2 connected to the flue gas pipeline 1, a heat exchange tube is arranged in the heat exchange chamber 6 of the waste heat recovery device 2, and the heat exchange tube and The air inlet and the air outlet of the waste heat recovery device 2 are connected, and the heat exchange chamber 6 is connected with the heat preservation water tank 3 through a pipeline with a water pump. It is characterized in that: the air inlet and the air outlet of the waste heat recovery device 2 The inlet flue gas temperature detector 4 and the outlet flue gas temperature detector 5 are arranged respectively, the heat exchange chamber 6 of the waste heat recovery device 2 is also equipped with a water temperature detector 7, and the heat preservation water tank 3 is equipped with a water temperature detector 8 of the heat preservation water tank And the liquid level detector 9, the heat preservation water tank 3 is also connected with the water replenishment pipeline 10 provided with the electric water replenishment valve, the lower end of the heat preservation water tank 3 is provided with a blowdown valve 11 and a water outlet pipeline 12, the above-mentioned waste heat recovery device 2, inlet flue gas The temperature detector 4 , the outlet flue gas temperature detector 5 , the water temperature detector 7 , the water temperature detector 8 of the heat preservation water tank, the liquid level detector 9 and the water pump are all uniformly controlled by the control system 13 .

Compared with the prior art, the present invention has the following advantages:

This structural form of intelligent boiler waste heat recovery and utilization system has simple structure, ingenious design, and reasonable layout. It fully considers the market demand for the problems existing in the use of existing waste heat recovery and utilization devices and uses As a part of the system, the traditional waste heat recovery and utilization device is designed to strictly control the outlet water temperature, replenish water at any time according to the water storage in the water tank, and monitor the temperature of each part in real time; and use a separate control system to control each Some of them carry out unified coordinated control to realize intelligent and automatic recovery and utilization of boiler waste heat, which brings great convenience to users. Moreover, this waste heat recovery and utilization system has simple process, low cost, easy implementation, and has many advantages. It is especially suitable for popularization and application in the fields of environmental protection, heating, etc., and its market prospect is very broad.

Description of drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Detailed ways

The specific implementation manner of the present invention will be described below with reference to the accompanying drawings. As shown in Figure 1: an intelligent boiler waste heat recovery system, including a waste heat recovery device 2 connected to the flue gas pipeline 1, the waste heat recovery device 2 is provided with a flue gas channel and a heat exchange chamber channel that can be closed/opened in coordination The heat exchange chamber 6 is provided with a heat exchange tube connected with the air inlet and the air outlet. After the flue gas enters the heat exchange tube, it exchanges heat with the water in the heat exchange chamber 6, and the flue gas after the temperature drops passes through the preheating The air outlet of the heat recovery device 2 is discharged; the heat preservation water tank 3 is provided with a replenishment pipeline 10, and a water pump is provided thereon.

The working process of the intelligent boiler waste heat recovery and utilization system in the embodiment of the present invention is as follows: After the high-temperature flue gas enters the heat exchange chamber 6 of the waste heat recovery device 2 through the heat exchange tube, it is heated with the medium (water body) filled in the heat exchange chamber 6. Exchange, the flue gas after the temperature is lowered is discharged through the air outlet, and the heated water is stored in the thermal insulation water tank 3 through the circulation pipeline under the action of the water pump. When hot water is needed, the water outlet pipeline 12 is opened to heat Water is supplied where it is needed.

After the hot water in the heat preservation water tank 3 is consumed for a period of time, the control system 13 controls the replenishment pipeline 10 to replenish cold water in the heat preservation water tank 3, and the liquid level detector 9 sends a signal to the control system 13 after detecting that the water tank has been full. The system 13 controls the replenishment pipeline 10 to stop the replenishment of water; since the temperature of the water body in the heat preservation water tank 3 drops after mixing, the heat exchange tube will perform heat exchange in the state where the heat exchange chamber 6 communicates with the flue gas inlet, so that the water body will heat up, while the heat preservation The water temperature detector 8 in the water tank monitors the water temperature in the thermal insulation water tank 3 at any time. When the water temperature reaches a preset value, the control system 13 controls the action of the waste heat recovery device 2, the channel of the heat exchange chamber is closed, the flue gas channel is opened, and the high-temperature flue gas directly passes through the outlet. The air port is discharged to prevent the occurrence of excessive water temperature, dry burning, and tube explosion.

The inlet flue gas temperature detector 4, the outlet flue gas temperature detector 5, the water temperature detector 7, the water temperature detector 8 of the heat preservation water tank, the liquid level detector 9 and the water pumps on each pipeline, which are uniformly controlled by the control system 13, are integrated and coordinated Work to realize the intelligent and automatic control of the entire waste heat recovery and utilization system.

Claims (1)

1. An intelligent boiler waste heat recovery and utilization system, including a waste heat recovery device (2) connected to the flue gas pipeline (1), the heat exchange chamber (6) of the waste heat recovery device (2) is provided with a heat exchange tube, and the heat exchange The pipe is connected with the air inlet and outlet of the waste heat recovery device (2), and the heat exchange chamber (6) is connected with the heat preservation water tank (3) through a pipeline with a water pump. It is characterized in that: the waste heat recovery device The inlet and outlet of (2) are respectively equipped with an inlet flue gas temperature detector (4) and an outlet flue gas temperature detector (5), and the heat exchange chamber (6) of the waste heat recovery device (2) is also equipped with There is a water temperature detector (7), and the water temperature detector (8) and the liquid level detector (9) of the heat preservation water tank (3) are arranged in the heat preservation water tank (3), and the heat preservation water tank (3) is also connected with the water replenishment pipeline ( 10) Communication, the lower end of the heat preservation water tank (3) is provided with a drain valve (11) and an outlet pipeline (12), the above-mentioned waste heat recovery device (2), inlet flue gas temperature detector (4), outlet flue gas temperature detection The device (5), the water temperature detector (7), the water temperature detector (8) of the insulated water tank, the liquid level detector (9) and the water pump are all uniformly controlled by the control system (13).

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