CN201181099Y

CN201181099Y - Device for utilizing waste heat of boiler

Info

Publication number: CN201181099Y
Application number: CNU2008200036893U
Authority: CN
Inventors: 蔡兴东
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-04
Filing date: 2008-02-04
Publication date: 2009-01-14
Anticipated expiration: 2018-02-04

Abstract

The utility model relates to a boiler waste heat recovery device which comprises a heat exchanger, water pipes and a circulating water pump. A flue inlet and a flue outlet of a flue passage of the heat exchanger are connected in series to the exhaust passage of the boiler. A water outlet of a water passage of the heat exchanger is connected with the entrance of the circulating water pump via the water pipe. A one-way valve is connected to the water pipe at the exit of the circulating water pump. An inlet water valve is connected with the water inlet of the heat exchanger. A water replenishing port and a ventilation pipe are arranged at the upper end of the heat exchanger and communicate with the water passage of the heat exchanger. A water replenishing tank is connected with the water replenishing port. A water inlet communicating with a water source is formed on the water replenishing tank. The boiler waste heat recovery device has the advantages that: the water replenishing box can automatically replenish water to the circulating water loop; the heat exchanger communicates with the atmosphere via the ventilation pipe and works under the zero-pressure condition with high safety; the automatic control by using the temperature sensor, the solenoid valve (or the mechanical control valve) and the electric controller are used for the automatic control, can control the opening/closing or the rotation speed of the circulating water pump according to the water temperature, thereby realizing the temperature control and the automatic control of the circulating water pump.

Description

The boiler afterheat use device

Technical field

The utility model relates to energy saver, specifically is a kind of boiler afterheat use device, is used to be installed in series and contains the pipeline of heat of high temperature flue gas in the discharging of boiler or other kilns, and the heat that is discharged is utilized.

Background technology

The chimney of hot-water boiler or kiln can be drained a large amount of heats, causes energy waste, and people are energy savings, a kind of heat exchanger of series connection on the smokejack of stove.Exchange mutually by flue and water channel and to carry out exchange heat, to the pipeline of boiler fills water channel by heat exchanger.The structure of heat exchanger is that the many water pipes vertical with flue are arranged in the flue cavity.This energy saver has following shortcoming: the one, and only at the waste heat that could utilize boiler emission when boiler adds cold water, the most of the time does not have energy-saving effect; The heat exchanger water pipe is big to flue resistance, and too many water pipe can not be set, and heat exchanger efficiency is low;

Summary of the invention

The purpose of this utility model just provides a kind of boiler afterheat use device that can circulate and have the high efficiency heat exchanger continuously.

The technical solution of the utility model is: comprise heat exchanger, water pipe and water circulating pump, the smoke inlet of the exhaust gases passes of heat exchanger and outlet flue are serially connected on the discharge flue of boiler or kiln, the delivery port of the aquaporin of heat exchanger is connected with the inlet of water circulating pump by water pipe, it is characterized in that: on the water pipe of described recirculated water delivery side of pump, be connected with check valve, be connected with water intaking valve at the water inlet of described heat exchanger; Be provided with water supplement port and the breather pipe that communicates with its aquaporin in the upper end of described heat exchanger, on this water supplement port, be connected with water supply tank, on this water supply tank, be provided with the water inlet that is connected with the water source.

In described heat exchanger temperature sensor is housed, the signal end of this sensor is connected with the input of an electronic controller; Described water intaking valve is that magnetic valve or machinery open and close valve, and the coil of this magnetic valve is connected with an output of described electronic controller; The power supply of described water circulating pump connects with the corresponding control output end of described electronic controller.

Described heat exchanger comprises cylindrical outer casing, and many axial smoke pipes excessively of the even cloth of portion all communicate with the common chamber at shell two ends at these two ends of crossing smoke pipe as described exhaust gases passes within it, and these two ends, common chamber respectively are outlet flue and smoke inlet; With the shell vertical direction be described aquaporin, its two ends are described delivery port and water inlet.

Be connected with branch connector at described delivery port and/or water inlet.

The utility model has the advantages that: the water route of heat exchanger and radiator or other watering equipments (storage tank, shower set etc.) are connected to circulation waterway, utilize water supply tank to be the circulation waterway moisturizing automatically; Heat exchanger communicates with atmosphere by breather pipe, works under passive state, and is safe; Automatically control by temperature sensor, magnetic valve and electronic controller, can control the keying or the rotating speed of water circulating pump according to water temperature, thereby realize temperature control and the unlatching of water circulating pump and the automatic control that stops, energy-saving effect is better.Can reduce exhaust gas temperature 80-100 ℃, can realize the cost free heating in the area northeastward, can be energy-saving and emission-reduction and make huge contribution, reduce environmental pressure if any continuous smoke evacuation process.

Description of drawings

Fig. 1 is an overall formation schematic diagram of the present utility model;

Fig. 2 is the structural representation of the utility model heat exchanger.

The specific embodiment

Referring to Fig. 1 and Fig. 2, the utility model comprises heat exchanger 1, water pipe 2 and water circulating pump 9, the smoke inlet 14 of the exhaust gases passes 18 of heat exchanger 1 and outlet flue 23 be serially connected in boiler 5 (or device of other discharging flue gases) discharge flue 6 on, the delivery port of the aquaporin 17 of heat exchanger 18 is connected with the inlet of water circulating pump 9 by water pipe 2.It is characterized in that: on the water pipe 2 of the outlet of described water circulating pump 9, be connected with check valve 11, be connected with entering water electromagnetic valve 21 at the water inlet 7 of described heat exchanger 1.Be provided with water supplement port 22 and the breather pipe 15 that communicates with its aquaporin 17 in the upper end of described heat exchanger 1, on this water supplement port 15, be connected with water supply tank 4, on this water supply tank 4, be provided with the water inlet 19 that is connected with water source (as running water).Entering water electromagnetic valve 21 also can adopt machinery to open and close the valve replacement, utilizes the pressure of water to realize opening.

The utility model when using by water pipe 2 and be connected to closed circuit with hot water facility (radiator 12 as described in Figure 1).

In the aquaporin 17 of described heat exchanger 1, temperature sensor 20 is housed, the signal end of this sensor 20 is connected with the input of an electronic controller 10, and the different control output ends of this electronic controller 10 are connected with the coil of described entering water electromagnetic valve 21 and the power supply of described water circulating pump 9 respectively.Electronic controller 10 can be controlled the keying or the rotating speed of water circulating pump 9 according to the water temperature in the heat exchanger 1, thereby realizes temperature control and the unlatching of water circulating pump and the automatic control that stops.When water circulating pump 9 is out of service, close entering water electromagnetic valve 21 simultaneously.

Described heat exchanger 1 comprises cylindrical outer casing 13, and many axial smoke pipes excessively of the even cloth of portion all communicate with the common chamber at shell two ends at these two ends of crossing smoke pipe as described exhaust gases passes 18 within it, and these two ends, common chamber respectively are outlet flue 23 and smoke inlet 14; With the shell vertical direction be described aquaporin 17, its two ends are described delivery port 8 and water inlet 7.

Be connected with branch connector 16 at described water inlet 7 (and/or delivery port), be suitable for large scale system and use.

Claims

1, a kind of boiler afterheat use device, comprise heat exchanger, water pipe and water circulating pump, the smoke inlet of the exhaust gases passes of heat exchanger and outlet flue are serially connected on the discharge flue of boiler, the delivery port of the aquaporin of heat exchanger is connected with the inlet of water circulating pump by water pipe, it is characterized in that: on the water pipe of described recirculated water delivery side of pump, be connected with check valve, be connected with water intaking valve at the water inlet of described heat exchanger; Be provided with water supplement port and the breather pipe that communicates with its aquaporin in the upper end of described heat exchanger, on this water supplement port, be connected with water supply tank, on this water supply tank, be provided with the water inlet that is connected with the water source.

2, boiler afterheat use device according to claim 1 is characterized in that: in described heat exchanger temperature sensor is housed, the signal end of this sensor is connected with the input of an electronic controller; Described water intaking valve is that magnetic valve or machinery open and close valve, and the coil of this magnetic valve is connected with an output of described electronic controller; The power supply of described water circulating pump connects with the corresponding control output end of described electronic controller.

3, boiler afterheat use device according to claim 1 and 2, it is characterized in that: described heat exchanger comprises cylindrical outer casing, many axial smoke pipes excessively of the even cloth of portion are as described exhaust gases passes within it, all communicate with the common chamber at shell two ends at these two ends of crossing smoke pipe, these two ends, common chamber respectively are outlet flue and smoke inlet; With the shell vertical direction be described aquaporin, its two ends are described delivery port and water inlet.

4, boiler afterheat use device according to claim 3 is characterized in that: be connected with branch connector at described delivery port and/or water inlet.