CN213421159U

CN213421159U - Air heater with alarming function

Info

Publication number: CN213421159U
Application number: CN202022251650.7U
Authority: CN
Inventors: 张考
Original assignee: Shenzhen Xinyulong Precision Machinery Co ltd
Current assignee: Shenzhen Xinyulong Precision Machinery Co ltd
Priority date: 2020-10-12
Filing date: 2020-10-12
Publication date: 2021-06-11
Anticipated expiration: 2030-10-12

Abstract

The utility model is suitable for the technical field of air preheating, and provides an air preheater with an alarm function, which comprises a shell, a preheating chamber and a middle box, wherein the top of the shell is provided with a first air inlet, the bottom surface of the shell is provided with a second air inlet, the side surface of the shell is provided with a second air outlet, the front surface of the shell is provided with a channel steel fixing piece, the interior of the shell is provided with the preheating chamber, the first air inlet is directly connected with the top of the preheating chamber, the interior of the preheating chamber is provided with a first preheating pipeline, the bottom of the preheating chamber is provided with an air exchange chamber, the first preheating pipeline is fixedly connected with the air exchange chamber, the front part of the first preheating pipeline is provided with a second preheating pipeline fixedly connected with the air exchange chamber, the upper end of the second preheating pipeline is provided with the middle chamber, the middle chamber is arranged, the air tightness of the equipment is improved, the preheating performance is also improved, the preheating temperature is monitored in real time, and safety accidents are avoided.

Description

Air heater with alarming function

Technical Field

The utility model belongs to the technical field of the air preheats, especially, relate to an air heater with alarming function.

Background

The air preheater is a heating surface for preheating air before entering the boiler to a certain temperature by smoke in a flue at the tail part of the boiler through internal radiating fins, and is equipment for improving the heat exchange performance of the boiler and reducing energy consumption. Air preheaters are generally classified into plate type, rotary type and tubular type. An air preheater is also called an air preheater for short, and is a preheating device for improving the heat exchange performance of a boiler and reducing the heat loss. The air preheater has the function of conducting heat carried in flue gas exhausted from a flue at the tail part of the boiler to air before entering the boiler through the radiating fins so as to preheat the air to a certain temperature. The air after the waste heat device enters the boiler, so that the drying, firing and burning processes of the fuel are accelerated, the stable burning in the boiler is ensured, and the burning efficiency is improved. Because the combustion in the furnace is improved and strengthened, and the temperature of the hot air entering the furnace is increased, the average temperature level in the furnace is also increased, thereby strengthening the radiation heat transfer in the furnace. Because the combustion in the furnace is stable, the radiation heat exchange is strengthened, and the chemical incomplete combustion loss can be reduced; on the other hand, the air preheater utilizes the waste heat of the flue gas, thereby further reducing the loss of smoke discharge and improving the thermal efficiency of the boiler. According to experience, when the air is increased by 1.5 ℃ in the preheater, the exhaust gas temperature can be reduced by 1 ℃, and after the air preheater is arranged in a boiler flue, if the waste heat of the air can be increased by 150 ℃ and 160 ℃, the exhaust gas temperature can be reduced by 110 ℃ and 120 ℃, and the thermal efficiency of the boiler can be improved by 7-7.5%. Can save fuel by 11-12%. In addition, the hot air may also be used as a fuel desiccant.

However, most of the air preheaters commonly used in the market at present adopt a preheating box to heat air, and the air tightness and preheating effect of the device need to be improved; secondly, the preheating device is mostly operated in a high-temperature environment, and the temperature is difficult to control, so that a fire disaster is easily caused, and a safety accident is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides an air heater with alarming function aims at solving present preheating device and preheats the problem that the effect remains to improve and very easily causes the incident.

The utility model is realized in such a way, an air preheater with alarming function, which comprises a shell, a preheating chamber and a middle box, and is characterized in that a first air inlet is arranged at the top of the shell, a second air inlet is arranged at the bottom surface of the shell, a second air outlet is arranged at the side surface of the shell, a channel steel fixing part is arranged at the front surface of the shell, the channel steel fixing part comprises a fixing piece, a screw and a nut, the preheating chamber is arranged inside the shell, the first air inlet is directly connected with the top of the preheating chamber, a first preheating pipeline is arranged inside the preheating chamber, a ventilation chamber is arranged at the bottom of the preheating chamber, the first preheating pipeline is fixedly connected with the ventilation chamber, a second preheating pipeline is arranged in front of the first preheating pipeline, the second preheating pipeline is fixedly connected with the ventilation chamber, the middle chamber is arranged at the upper end of the second preheating pipeline, the middle chamber is arranged in the preheating chamber, the second air outlet is fixedly connected with the side face of the middle chamber, the front face of the middle chamber is provided with an alarm, the bottom of the alarm is provided with a temperature sensor, an LED lamp is arranged in the alarm, and the LED lamp and the temperature sensor are electrically connected with an external power supply and an external controller and are controlled by the external controller.

Furthermore, the first preheating pipeline and the second preheating pipeline both adopt polyurethane composite materials, and the compressive strength of the first preheating pipeline and the second preheating pipeline is not less than.MPa.

Furthermore, a plastic flat gasket is arranged between the middle chamber and the second air outlet.

Furthermore, a square opening is arranged in the middle of the front face of the shell, and the area of the square opening is smaller than that of the front face of the middle chamber.

Furthermore, the bottoms of the second air inlet and the second air outlet are both provided with internal threads.

Further, the fixing plate is welded to a side surface of the housing.

About implementing the utility model discloses a beneficial technological effect does: firstly, the preheating chamber is directly connected with the first air inlet, and the first preheating pipeline and the second preheating pipeline are separately sealed in the preheating chamber, so that the air tightness is improved, and meanwhile, the preheating performance is also improved as the air flow direction is opposite to the movement direction of waste gas; secondly, because the utility model discloses set up the alarm at the intermediate chamber, guaranteed real time monitoring preheating temperature, avoided the utility model discloses because indoor temperature is too high and cause the incident.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of the internal structure of the present invention from a first perspective;

fig. 3 is a schematic view of the second viewing angle of the internal structure of the present invention;

fig. 4 is a schematic structural view of the channel steel fixing member of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1-4, the utility model relates to an air preheater with alarm function, which comprises a housing 1, a preheating chamber 7 and a middle box 11, and is characterized in that a first air inlet 2 is arranged at the top of the housing 1, a second air inlet 4 is arranged at the bottom of the housing 1, a second air outlet 3 is arranged at the side of the housing 1, a channel steel fixing member 6 is arranged at the front of the housing 1, the channel steel fixing member 6 comprises a fixing piece 61, a screw 62 and a nut 63, the preheating chamber 7 is arranged inside the housing 1, the first air inlet 2 is directly connected with the top of the preheating chamber 7, a first preheating pipeline 8 is arranged inside the preheating chamber 7, a ventilation chamber 9 is arranged at the bottom of the preheating chamber 7, the first preheating pipeline 8 is fixedly connected with the ventilation chamber 9, a second preheating pipeline 10 is arranged in front of the first preheating pipeline 8, the second preheating pipeline 10 is fixedly connected with the ventilation chamber 9, the, the middle chamber 11 is arranged in the preheating chamber 7, the second air outlet 3 is fixedly connected with the side face of the middle chamber 11, the alarm 5 is arranged on the front face of the middle chamber 11, the temperature sensor is arranged at the bottom of the alarm 5, the LED lamp is arranged in the alarm 5, and the LED lamp and the temperature sensor are electrically connected with an external power supply and an external controller and are controlled by the external controller.

The first preheating pipeline 8 and the second preheating pipeline 10 are both made of polyurethane composite materials, the compressive strength of the polyurethane composite materials is not less than 0.3MPa, the temperature resistance is good, the performance is stable, and the polyurethane composite materials can be used for a long time.

Be provided with the flat gasket of plastics between middle room 11 and the second gas outlet 3, improve the utility model discloses the gas tightness guarantees to preheat the performance.

The middle of the front surface of the shell 1 is provided with a square opening, and the area of the square opening is smaller than that of the front surface of the middle chamber 11, so that the preheated air can be normally discharged.

Second air inlet 4 all is provided with the internal thread bottom 3 with the second gas outlet, is convenient for general the utility model discloses be connected with the pipeline of admitting air and giving vent to anger.

Stationary blade 61 welds in 1 side of shell, is convenient for with the utility model discloses be connected with outside channel-section steel.

The utility model discloses a theory of operation does: firstly, the utility model is connected with an external power supply, a nut 63 is screwed to control the distance between a screw 62 and a fixing sheet 61, the required external connection equipment is connected with a channel steel fixing piece 6, the screw nut 63 fixes the external connection equipment, a second air inlet 4 is connected with an exhaust gas discharge pipe, the heated exhaust gas enters a shell 1 from the second air inlet 4, the exhaust gas enters a first preheating pipeline 8 from the bottom outside a preheating chamber 7 due to the gas fluidity, then the exhaust gas enters a ventilation chamber 9 along with the first preheating pipeline 8, then the exhaust gas enters a second preheating pipeline 10 and finally enters an intermediate chamber 11 along with the pipeline and is discharged from a second air outlet 3, a temperature sensor on an alarm 5 arranged in the intermediate chamber 11 detects the temperature in the intermediate chamber 11, if the temperature is higher than a specified temperature, an LED lamp in the alarm 5 is constantly lighted to alarm, at the moment, the utility model is completely disconnected with the external connection equipment, terminating preheating; if the alarm 5 does not react, the first air inlet 2 is connected with an external air pump to pump air, the air directly enters the preheating chamber 7 from the first air inlet 2, preheating is completed under the heating of the first preheating pipeline 8 and the second preheating pipeline 10, and finally the air is discharged from a square outlet on the front surface of the shell 1 outside the middle chamber 11, so that preheating can be completed.

About implementing the utility model discloses a beneficial technological effect does: firstly, because the preheating chamber 7 is directly connected with the first air inlet 2 and the first preheating pipeline 8 and the second preheating pipeline 10 are separately sealed in the preheating chamber 7, the air tightness is improved, and the preheating performance is also improved when the air flowing direction is opposite to the waste gas moving direction; secondly, because the utility model discloses set up alarm 5, LED lamp and temperature sensor at the intermediate chamber, guaranteed real time monitoring preheating temperature, avoided the utility model discloses because indoor temperature is too high and cause the incident.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. An air preheater with an alarm function comprises a shell (1), a preheating chamber (7) and an intermediate chamber (11), and is characterized in that a first air inlet (2) is formed in the top of the shell (1), a second air inlet (4) is formed in the bottom surface of the shell (1), a second air outlet (3) is formed in the side surface of the shell (1), a channel steel fixing piece (6) is arranged on the front surface of the shell (1), the channel steel fixing piece (6) comprises a fixing piece (61), a screw (62) and a nut (63), the preheating chamber (7) is arranged in the shell (1), the first air inlet (2) is directly connected with the top of the preheating chamber (7), a first preheating pipeline (8) is arranged in the preheating chamber (7), a ventilation chamber (9) is arranged at the bottom of the preheating chamber (7), and the first preheating pipeline (8) is fixedly connected with the ventilation chamber (9), first preheating pipe (8) the place ahead is provided with second preheating pipe (10), second preheating pipe (10) with scavenge air room (9) fixed connection, second preheating pipe (10) upper end is provided with middle room (11), middle room (11) set up in inside preheating chamber (7), second gas outlet (3) with middle room (11) side fixed connection, middle room (11) openly are provided with alarm (5), alarm (5) bottom is provided with temperature sensor, the inside LED lamp that is provided with of alarm (5), the LED lamp with temperature sensor is connected with external power source and external control ware electricity to receive external control ware control.

2. An air preheater with an alarm function according to claim 1, wherein: the first preheating pipeline (8) and the second preheating pipeline (10) are both made of polyurethane composite materials, and the compressive strength of the first preheating pipeline and the second preheating pipeline is not less than 0.3 MPa.

3. An air preheater with an alarm function according to claim 1, wherein: a plastic flat gasket is arranged between the middle chamber (11) and the second air outlet (3).

4. An air preheater with an alarm function according to claim 1, wherein: the middle of the front surface of the shell (1) is provided with a square opening, and the area of the square opening is smaller than that of the front surface of the middle chamber (11).

5. An air preheater with an alarm function according to claim 1, wherein: and internal threads are arranged at the bottoms of the second air inlet (4) and the second air outlet (3).

6. An air preheater with an alarm function according to claim 1, wherein: the fixing sheet (61) is welded on the side surface of the shell (1).