CN202072726U

CN202072726U - Heat accumulating type hardening furnace

Info

Publication number: CN202072726U
Application number: CN2011201142641U
Authority: CN
Inventors: 吴昆林; 郭志明
Original assignee: Guangzhou Longxin Regenerative Industrial Furnace Co ltd; CHONGQING HONGQI SPRING Co Ltd
Current assignee: Guangzhou Longxin Regenerative Industrial Furnace Co ltd; CHONGQING HONGQI SPRING Co Ltd
Priority date: 2011-04-19
Filing date: 2011-04-19
Publication date: 2011-12-14
Anticipated expiration: 2021-04-19

Abstract

The utility model discloses a heat accumulating type hardening furnace, which comprises a furnace cavity, burning nozzles, a gas pipe, an air pipe and a flue gas pipe. The air pipe is connected with a draught fan, the burning nozzles are arranged in pairs and respectively arranged on two sides of furnace cavity, gas inlets of the burning nozzles are respectively connected with the gas pipe, the gas pipe is provided with a gas reversing valve, each burning nozzle is provided with a regenerative chamber, a heat accumulator body is filled in the regenerative chamber, and the regenerative chamber, the air pipe and the flue gas pipe are connected with an air reversing valve. By means of the design, fire resistant materials arranged in pairs are led to be the heat accumulator body and heated by high temperature flue gas alternately, heat is transmitted to combustion air, the combustion air is preheated by high temperature to more than 800 DEG C, flue gas exit temperature is reduced to 150 DEG C, discharge of nitric oxide is greatly reduced, flue gas waste heat is recycled to the most limit, and a dual-purpose of energy conservation and environment protection is achieved.

Description

A kind of heat accumulating type quenching furnance

Technical field

The utility model relates to a kind of quenching furnance, particularly a kind of heat accumulating type quenching furnance.

Background technology

Traditional quenching furnance generally directly discharges waste gas after burning, has not only wasted the energy but also has caused the serious environmental pollution.The technology of preheater had appearred installing on smoke discharging pipe afterwards, be used for heating combustion-supporting gas, but owing to reasons such as material, price, technology, life-spans, usually also can only be with about preheating of air to 300 ℃, funnel temperature has still caused the waste of the energy and the pollution of environment generally more than 500 ℃.

The utility model content

The heat accumulating type that the technical problems to be solved in the utility model provides a kind of energy-conserving and environment-protective quenches.

In order to solve the problems of the technologies described above, the utility model provides following technical scheme:

A kind of heat accumulating type quenching furnance, comprise burner hearth, burner, gas line, blast main and fume pipe, blast main is connected with gas blower, fume pipe is connected with induced draft fan, burner in pairs and be separately positioned in the burner hearth both sides, the burner fuel gas inlet is connected with gas line respectively, gas line is provided with the combustion gas reversing valve, be provided with regenerator in the burner, be filled with heat storage in the regenerator, regenerator, blast main and fume pipe are connected with air reversing valve.

By above design, make refractory materials arranged in pairs make heat storage, alternative is heated by high-temperature flue gas, again with the heat transferred combustion air, combustion air is obtained more than the high temperature preheating to 800 ℃, and smog discharge temperature is reduced to 150 ℃, significantly reduces the quantity discharged of oxynitride simultaneously, reclaim fume afterheat to greatest extent, reach energy-conservation and dual purpose environmental protection.

Further, the burner that is arranged on the burner hearth both sides is one or more pairs of, can adapt to the needs of different size starting material processing like this.

Further, heat storage is the ceramic honeycomb heat storage, uses this material can improve the accumulation of heat effect, shortens turnaround time, helps the control of fire box temperature.

Further, be provided with security detection equipment in the quenching furnance and link to each other, when each processing parameter or equipment occur unusual with warning howler, when surpassing the systemic presupposition warning value, time and source that the automatic record trouble of equipment meeting is freeed, and with the sound and light alarm signal, alert is handled, and guarantees security of system.

Description of drawings

Below in conjunction with drawings and Examples technical solutions of the utility model are further specified:

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

Fig. 2 is the structural representation of the utility model embodiment two.

Embodiment

As Fig. 1, shown in Figure 2, a kind of heat accumulating type quenching furnance of the utility model, comprise burner hearth 12, burner 6 and 13, gas line 10, blast main 4 and fume pipe 2, blast main 4 is connected with gas blower 5, fume pipe 2 is connected with induced draft fan 1, burner 6 and 13 in pairs and be separately positioned in burner hearth 12 both sides, burner fuel gas inlet 9 be connected with gas line 10 respectively with 18, gas line 10 is provided with combustion gas reversing valve 11, be provided with

regenerator

7 and 16 in the burner 6 and 3, be filled with

heat storage

8 and 17 in the

regenerator

7 and 16,

regenerator

7 and 16, blast main 4 is connected with air reversing valve 3 with fume pipe 2; The burner 6 and 13 that is arranged on burner hearth 12 both sides is for one or more pairs of;

Heat storage

8 and 17 is the ceramic honeycomb heat storage; Being provided with security detection equipment 14 in the quenching furnance links to each other with warning howler 15.

When quenching furnance was in the operation row state of Fig. 1, the normal temperature air that comes out from gas blower 5 was transported to air reversing valve 3 through blast main 4, switched through air reversing valve 3 to enter regenerator 7, was heated to more than 800 ℃ by heat storage 8; Meanwhile switching the combustion gas that enters gas line 10 through combustion gas reversing valve 11 injects from burner gas port 9, combustion gas mixes the back in burner hearth 12 internal combustion with warm air, high-temperature flue gas enters the temperature of regenerator 16 about heat storage 17 coolings are with 150 ℃ and arrives air reversing valve 3, cut 3 swap-ins through air reversing valve and go into fume pipe 2, under the effect of induced draft fan 1, discharge, finish a commutation cycle thus.

Commutate air reversing valve 3 and combustion gas reversing valve 11 simultaneously this moment, enter the working order of Fig. 2, the normal temperature air that comes out from gas blower 5 is transported to air reversing valve 3 through blast main 4, switches through air reversing valve 3 to enter regenerator 16, is heated to more than 800 ℃ by heat storage 17; Meanwhile switching the combustion gas that enters gas line 10 through combustion gas reversing valve 11 injects from burner gas port 18, combustion gas mixes the back in burner hearth 9 internal combustion with warm air, high-temperature flue gas enters the temperature of regenerator 7 about heat storage 8 coolings are with 150 ℃ and arrives air reversing valve 3, enter fume pipe 2 through air reversing valve 3 switchings, under the effect of induced draft fan 1, discharge, finish another commutation cycle thus.

The reversing valve 3 that working temperature is not high switched with the commutation cycle of 30s-200s, made the

heat storage

8 and 17 of two

regenerator

7 and 16 be in the working order of accumulation of heat and heat release.Conversion so goes round and begins again, by

heat storage

8 and 17 these media, absorb high-temperature flue gas physics heat, and discharge to combustion air, make that the fume afterheat major part of clapping book is fully recycled, thereby reach purpose energy-conservation significantly and reduction NOX nitrogen oxide quantity discharged.

The raw-material specification and the size of Cui Huoing as required, and the size of quenching furnance can be random be provided with one in burner hearth 12 both sides to how right burner 6 and 13,

heat storage

8 and 17 is preferably the ceramic honeycomb heat storage, the heat interchanging area of this heat storage unit volume, depth of penetration heating is little, thermal resistance is little, good heat conductivity, and accumulation of heat heat release speed is fast.

Being provided with security detection equipment 14 in the quenching furnance links to each other with warning howler 15, security detection equipment 14 includes combustion flame test set, reversing valve level detection apparatus, fire box temperature test set, funnel temperature test set, furnace pressure test set, gaseous-pressure and falls measurement equipment etc., fact monitoring by above equipment, when each processing parameter or equipment occur unusual, when surpassing the systemic presupposition warning value, time and source that the automatic record trouble of equipment meeting is freeed, and with the sound and light alarm signal, alert is handled, and guarantees security of system.

For a person skilled in the art; under the prerequisite that does not break away from the utility model structure; can also make some distortion and improvement, should be considered as protection domain of the present utility model as these yet, these can not influence effect and practical applicability that the utility model is implemented.

Claims

1. heat accumulating type quenching furnance, comprise burner hearth, burner, gas line, blast main and fume pipe, blast main is connected with gas blower, fume pipe is connected with induced draft fan, it is characterized in that: burner in pairs and be separately positioned in the burner hearth both sides, the burner fuel gas inlet is connected with gas line respectively, gas line is provided with the combustion gas reversing valve, be provided with regenerator in the burner, be filled with heat storage in the regenerator, regenerator, blast main and fume pipe are connected with air reversing valve.

2. heat accumulating type quenching furnance as claimed in claim 1 is characterized in that: the burner that is arranged on the burner hearth both sides is one or more pairs of.

3. heat accumulating type quenching furnance as claimed in claim 1 is characterized in that: heat storage is the ceramic honeycomb heat storage.

4. heat accumulating type quenching furnance as claimed in claim 1 is characterized in that: be provided with security detection equipment in the quenching furnance and link to each other with warning howler.