CN205690675U - A kind of adjustable composite exchanger heat wind furnace - Google Patents

Abstract

The utility model discloses an adjustable combined heat exchanger hot blast stove. The electric control cabinet communicates with the No. 3 hot air induction motor, the No. 2 hot air induction motor, and the No. 1 hot air induction motor through the control line in the wire slot. , the fresh air induction motor, the flue gas induction platform motor, the flue gas circuit induction platform motor and the flue gas circuit solenoid valve are connected, the air mixing chamber is connected to one end of the tube heat exchanger, and the tube heat exchange The other end of the burner is connected with the heat pipe heat exchanger, and the heat pipe heat exchanger is connected with the fresh air induction motor through the pipe; the burner is connected with the air mixing chamber, and the No. chamber, No. 3 induced air chamber is connected with tube heat exchanger, No. 2 hot air induced air motor is connected with No. 2 induced air chamber, No. 2 induced air chamber 7 is connected with tube heat exchanger, 1 The No. 1 hot air induced air motor is connected with the No. 1 induced air chamber, and the No. 1 induced air chamber is connected with the heat pipe heat exchanger.

Description

An adjustable combined heat exchanger hot blast stove

technical field

The utility model relates to an adjustable combined heat exchanger hot blast stove, which belongs to the technical field of hot blast stoves.

Background technique

At present, hot blast stoves have important applications in modern chemical industry, medical treatment, food, and agriculture. The main function of hot blast stoves is to heat the air to the required temperature output. Many existing hot blast stoves are calculated after a specific heat transfer process Finally, using a single heat exchanger and selecting a specific speed and power motor, the heat exchange efficiency of the equipment is not high, and the whole set of heat exchange equipment can only be used for a certain process, and the heat exchange process with variable parameters cannot be realized. So the existing hot blast stove is still not perfect enough.

Contents of the invention

The purpose of this utility model is to provide an automatic hot blast stove with simple structure and convenient operation. The combined heat exchanger adopted is conducive to improving the comprehensive heat exchange efficiency, the balance between cost and efficiency is reasonable, and the volume of the heat exchanger can be reduced. . Recycling and utilization of the flue gas after the heat exchange process can recycle the waste heat of the flue gas to achieve the purpose of energy saving and emission reduction, and can monitor the blackness of the flue gas during the circulation process and adjust it in time to avoid the excessive blackness of the flue gas from causing heat transfer heat. An adjustable combined heat exchanger hot blast stove with excessive resistance to overcome the deficiencies in the prior art.

The utility model is constituted as follows: an adjustable combined heat exchanger hot blast stove, including a furnace body and a burner arranged on the furnace body, the furnace body is connected with the electric control cabinet through the wire groove, and the electric control cabinet passes through the wire groove The control line is connected with No. 3 hot air induced draft motor, No. 2 hot air induced draft motor, No. 1 hot air induced draft motor, fresh air induced draft motor, flue gas induced draft platform motor, flue gas loop induced draft platform motor and smoke The gas circuit solenoid valve is connected, and a circuit pipe is set on the furnace body. One end of the circuit pipe is connected to the air mixing chamber, and the other end of the circuit pipe is connected to the flue gas outlet through the flue gas circuit solenoid valve. There is a blackness sensor, and a fresh air supply port is set on the air mixing chamber. The air mixing chamber is connected to one end of the tube heat exchanger, and the other end of the tube heat exchanger is connected to the heat pipe heat exchanger. The heat exchanger is connected to the fresh air induction motor through the pipeline; the burner is connected to the air mixing chamber, the No. 3 hot air induction motor is connected to the No. The No. 2 hot air induction motor is connected with the No. 2 induction chamber, the No. 2 induction chamber 7 is connected with the tube heat exchanger, and the No. 1 hot air induction motor is connected with the No. 1 induction chamber. Connection, the No. 1 induced draft chamber is connected with the heat pipe heat exchanger.

The flue gas induced wind platform motor is arranged on the flue gas induced wind platform.

The motor of the air induction platform of the flue gas circuit is arranged on the air induction platform of the flue gas circuit.

A flue gas loop flowmeter is arranged on the loop pipeline.

The No. 3 air induction chamber is connected to the end of the tube heat exchanger, and the No. 2 air induction chamber 7 is connected to the middle of the tube heat exchanger.

A fresh air induced air flowmeter is arranged on the pipeline connecting the heat pipe heat exchanger and the fresh air induced air motor.

A No. 3 hot air outlet thermometer is arranged on the No. 3 induced air chamber, a No. 2 hot air outlet thermometer is arranged on the No. 2 induced air chamber, and a No. 1 hot air outlet thermometer is arranged on the No. 1 induced air chamber.

Due to the adoption of the above technical solution, compared with the prior art, the utility model not only has the advantages of simple structure and ingenious design, but also can adjust the fresh air flow rate for heat exchange, change the total energy of heat exchange, and divide the heat exchanger into Three-stage type, when the air flow rate and total heat exchange energy are constant, materials with different temperatures can be obtained according to needs. At the same time, the flue gas is recycled to achieve energy saving effects, the blackness of the flue gas is monitored, and the thermal resistance of the heat transfer process is controlled.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the bottom view of Fig. 1;

Explanation of reference signs: 1-electrical control cabinet, 2-burner, 3-wire duct, No. 4-3 hot air induced draft motor, No. 5-3 induced draft chamber, No. 6-3 hot air outlet thermometer, 7-2 No. 1 induced draft chamber, No. 8-2 hot air outlet thermometer, No. 9-2 hot air induced draft motor, No. 10-1 induced draft chamber, No. 11-1 hot air outlet thermometer, No. 12-1 hot air induced draft motor, 13 -Fresh air induction motor, 14-Fresh air induction flowmeter, 15-Flue gas induction platform, 16-Flue gas outlet, 17-Flue gas circuit solenoid valve, 18-Flue gas circuit flow meter, 19-Heat pipe exchange Heater, 20-loop pipe, 21-tube heat exchanger, 22-blackness sensor, 23-air mixing chamber, 24-fresh air supply port, 25-flue gas circuit induction platform, 26-furnace body, 27 - motor for flue gas induced wind platform, 28 - motor for flue gas circuit induced wind platform.

detailed description

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail.

Implementation of the utility model: an adjustable combined heat exchanger hot blast stove, including a furnace body 26, a burner 2 arranged on the furnace body, the furnace body 26 is connected with the electrical control cabinet 1 through the wire slot 3, and the electrical control Cabinet 1 connects with No. 3 hot air induced draft motor 4, No. 2 hot air induced draft motor 9, No. 1 hot air induced draft motor 12, fresh air induced draft motor 13, and flue gas induced draft platform through the control line in wire slot 3 The motor 27, the flue gas circuit induction platform motor 28 and the flue gas circuit electromagnetic valve 17 are connected. One end is connected to the flue gas outlet 16 through the flue gas circuit solenoid valve 17, a blackness sensor 22 is arranged in the air mixing chamber 23, and a fresh air supply port 24 is arranged on the air mixing chamber 23, and the air mixing chamber 23 and One end of the tube heat exchanger 21 is connected, and the other end of the tube heat exchanger 21 is connected with the heat pipe heat exchanger 19, and the heat pipe heat exchanger 19 is connected with the fresh air induction motor 13 through a pipe; the burner 2 is connected with the air mixing chamber 23, the No. 3 hot air induction motor 4 is connected with the No. 3 induction chamber 5, the No. 3 induction chamber 5 is connected with the tube heat exchanger 21, and the No. 2 hot air induction motor 9 is connected with No. 2 induced air chamber 7, No. 2 induced air chamber 7 is connected with tube heat exchanger 21, No. 1 hot air induced air motor 12 is connected with No. 1 induced air chamber 10, and No. 1 induced air chamber 10 is connected with heat pipe heat exchanger 19.

The flue gas induction platform motor 27 is arranged on the flue gas induction platform 15 .

The flue gas circuit induction platform motor 28 is arranged on the flue gas circuit induction platform 25 .

A flue gas loop flow meter 18 is arranged on the loop pipe 20 .

The No. 3 air induction chamber 5 is connected to the end of the tube heat exchanger 21 , and the No. 2 air induction chamber 7 is connected to the middle of the tube heat exchanger 21 .

A fresh air induced air flowmeter 14 is arranged on the pipeline connecting the heat pipe heat exchanger 19 and the fresh air induced air motor 13 .

The No. 3 hot air outlet thermometer 6 is arranged on the No. 3 induced air chamber 5, the No. 2 hot air outlet thermometer 8 is arranged on the No. 2 induced air chamber 7, and the No. 1 hot air outlet thermometer 8 is arranged on the No. 1 induced air chamber 10. Outlet thermometer11.

A working method of an adjustable combined heat exchanger hot blast stove. The flue gas generated by the burner is mixed with the waste heat flue gas in the circuit channel after heat exchange in the air mixing chamber, so that the temperature of the flue gas drops to the usable temperature of the equipment, and the flue gas The motor of the induced draft platform works, and the flue gas is introduced into the shell and tube heat exchanger, and then enters the heat pipe heat exchanger. At the same time, according to the required air flow rate, the fresh air induced draft motor is started, and the fresh air is introduced into the heat pipe for heat exchange. Then enter the shell and tube heat exchanger; the flue gas in the shell and tube heat exchanger and the heat pipe heat exchanger and the fresh air outside their tubes flow relatively, and the heat generated by the flue gas and the shell and tube heat exchanger and the heat pipe heat exchanger Exchange, while the tube heat exchanger and the heat pipe heat exchanger exchange heat with the fresh air to achieve the heat exchange process.

By controlling the fresh air induced draft motor, No. 3 hot air induced draft motor, No. 2 hot air induced draft motor, No. 1 hot air induced draft motor, flue gas loop induced draft platform motor and burner, the flue gas production, smoke The hierarchical control of air return flow, fresh air intake, and heat pipe heat exchanger access to the heat exchange process, such as: only access to No. 1 induced draft chamber 10 and No. 1 hot air induced draft motor 12, the entire heat exchange process is equivalent to Only the heat pipe heat exchanger 19 is connected to participate in the heat exchange process, and the heat exchange area is the smallest. When only No. 2 induced air chamber 7 and No. 2 hot air induced air motor 9 are connected, the heat exchange process is connected to heat pipe heat exchanger 19 and part of tube heat exchanger 21, and so on.

The electrical control cabinet 1 of the utility model controls No. 3 hot air induced draft motor, No. 2 hot air induced draft motor 9, No. 1 hot air induced draft motor and fresh air induced draft motor 13, flue gas Induced wind platform motor 27, flue gas loop induced wind platform motor 28, flue gas loop solenoid valve 17 and burner 2. Burner 2 burns the mixture of fuel and air to generate flue gas. Since the initial temperature of the flue gas is too high, it will have a destructive effect on the equipment if it is directly passed into the heat exchange equipment. The flue gas is mixed. At this time, the flue gas circuit electromagnetic valve 17 in the circuit pipeline is opened, the flue gas outlet 16 is closed, and the flue gas is ejected into the air mixing chamber 23 by the motor 27 in the flue gas induction platform 25. The flue gas The flow rate can be measured by the flue gas circuit flowmeter 18, after mixing, the temperature of the flue gas can be reduced to a safe temperature value, and the flow rate can be increased. A blackness sensor 22 is installed in the air mixing chamber 23. When the blackness sensor reaches the set value, the smoke circuit solenoid valve 17 is closed, and the smoke is discharged through the smoke outlet 16. At this time, the fresh air supply port 24 is opened, and the fresh air After being filtered by the peripheral equipment, it enters the air mixing chamber 23 from the supplementary air port and mixes with the flue gas generated by the burner to reduce the temperature and blackness of the flue gas. The flue gas enters the heat exchange tubes of the tube-and-tube heat exchanger 21 through the air mixing chamber 23, and exchanges heat with the heat exchange tubes. The flue gas enters the heat pipe heat exchanger 19 after passing through the tube heat exchanger 21. This design adopts a gravity heat pipe heat exchanger, and the medium is water. The shell of the heat pipe heat exchanger 19 is divided into upper and lower parts and sealed. The lower part of the heat pipe exchanges heat with the flue gas, and the upper part exchanges heat with the material. The fresh air induced by the frequency conversion motor 13 according to the specified rotation speed injects fresh air into the upper part of the heat pipe heat exchanger 19 to exchange heat with the heat pipes, and the heated air enters the tube heat exchanger 21 to exchange heat with the tubes. After the heat exchange process is completed, an induced draft chamber that is opened flows out of the heat exchanger.

In the present utility model, after the shell and tube heat exchanger 21 and the heat pipe heat exchanger 19 are designed and installed, the heat transfer coefficient and the heat transfer area are constant, but the fresh air induced air frequency conversion motor 13 can be adjusted according to the required heat transfer air flow. , adjust the fresh air flow intake flow, the fresh air flow value is measured by the fresh air flow meter 14. Adjusting the fuel quantity of the burner can adjust the heat exchange energy. Turn on the No. 1 hot air induction motor 12 and the No. 1 induction chamber 10 and close other hot air induction platforms. During the heat exchange process of the hot air in the equipment, it is equivalent to only connecting the heat pipe heat exchanger 19, and the temperature of the hot air is changed by the No. 1 hot air Outlet thermometer 11 measures; Turn on No. 2 hot air induction motor 9 and No. 2 induction chamber 7 and close other hot air induction platforms. The heat exchange process is equivalent to connecting the heat pipe heat exchanger 19 and some tube heat exchangers 21. The temperature is measured by the No. 2 hot air outlet thermometer 8; the No. 3 hot air induction motor 4 and the No. 3 induction chamber 5 are turned on to close other hot air induction platforms. Heater 21, hot air temperature is measured by No. 3 hot air outlet thermometer 6; thus, different heat exchange areas are connected in three stages to realize hierarchical heat exchange.

Claims (6)

1. an adjustable composite exchanger heat wind furnace, including the combustor (2) arranged on body of heater (26), body of heater, its feature exists In: described body of heater (26) is connected with electrical control cabinet (1) by wire casing (3), and electrical control cabinet (1) is by wire casing (3) Control line and No. 3 hot-air blower motors (4), No. 2 hot-air blower motors (9), No. 1 hot-air blower motor (12), fresh Air blower motor (13), flue gas air inducing platform motor (27), flue gas circuit air inducing platform motor (28) and flue gas circuit electricity Magnet valve (17) is connected, and is provided with return (20), one end of return (20) and wind mixed chamber (23) on body of heater (26) Being connected, the other end of return (20) is connected with exhanst gas outlet (16), at mixed wind by flue gas circuit electromagnetic valve (17) It is provided with blackness sensor (22) in room (23), wind mixed chamber (23) is provided with fresh air wind-supplying mouth (24), described mixed wind Room (23) is connected with one end of tubular heat exchanger (21), and the other end of tubular heat exchanger (21) is connected with heat exchange of heat pipe (19) Connecing, heat exchange of heat pipe (19) is connected with fresh air blower motor (13) by pipeline；Described combustor (2) and wind mixed chamber (23) being connected, No. 3 hot-air blower motors (4) are connected with No. 3 air inducing rooms (5), No. 3 air inducing rooms (5) and tubular heat exchanger (21) being connected, No. 2 hot-air blower motors (9) are connected with No. 2 air inducing rooms (7), No. 2 air inducing rooms 7 and tubular heat exchanger (21) being connected, No. 1 hot-air blower motor (12) is connected with No. 1 air inducing room (10), No. 1 air inducing room (10) and heat pipe heat exchanging Device (19) is connected.

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: described flue gas air inducing platform Motor (27) is arranged on flue gas air inducing platform (15).

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: described flue gas circuit air inducing is put down Platform motor (28) is arranged on flue gas circuit air inducing platform (25).

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: on return (20) It is provided with flue gas circuit effusion meter (18).

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: described No. 3 air inducing rooms (5) Being connected with the end of tubular heat exchanger (21), described No. 2 air inducing rooms (7) are connected with the middle part of tubular heat exchanger (21).

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: heat exchange of heat pipe (19) with Fresh air draught flow rate meter (14) it is provided with on the pipeline that fresh air blower motor (13) is connected.

Adjustable composite exchanger heat wind furnace the most according to claim 1, it is characterised in that: described No. 3 air inducing rooms (5) On be provided with No. 3 hot-blast outlet thermometeies (6), described No. 2 air inducing rooms (7) are provided with No. 2 hot-blast outlet thermometeies (8), institute State and on No. 1 air inducing room (10), be provided with No. 1 hot-blast outlet thermometer (11).