CN202792067U

CN202792067U - Self-adaption chimney

Info

Publication number: CN202792067U
Application number: CN 201220398358
Authority: CN
Inventors: 张金根
Original assignee: WUJIANG WSD WATERPROOF BUILDING MATERIAL CO Ltd
Current assignee: WUJIANG WSD WATERPROOF BUILDING MATERIAL CO Ltd
Priority date: 2012-08-13
Filing date: 2012-08-13
Publication date: 2013-03-13
Anticipated expiration: 2022-08-13

Abstract

The utility model provides a self-adaption chimney which comprises a vertical upward chimney body. An exhaust fan in a coaxial line with the chimney is arranged on an outlet of the chimney body, and the exhaust fan is pivoted with a fixed frame fixed on the chimney body through a rotary shaft. The fixed frame is further provided with an adjustable-speed motor, and the rotary shaft is driven by the adjustable-speed motor. More than three pressure sensors used for sensing wind power are arranged on the periphery of the outlet of the chimney body, each pressure sensor inputs signals to a control circuit which controls the rotating speed of the adjustable-speed motor, and the sensing signals of the pressure sensors are in inverse correlation with the rotating speed of the adjustable-speed motor. The self-adaption chimney can provides strong flue gas emission effect in a low altitude environment to reduce construction cost, the outlet of the chimney can maintain a stable negative pressure to stabilize the emission effect of the chimney.

Description

The self adaptation chimney

Technical field

The utility model relates to a kind of industrial chimney, comprises one section chimney body straight up.

Background technology

In industrial processes, usually can produce some harmful smokes, need by smoke stack emission after the device processes after filtration.Because the flue gas in the production environment is unfavorable to health, therefore, must keep the self adaptation smoke stack emission unobstructed, make pernicious gas in time obtain processing and discharging.

Under existing conditions, flue gas after filtering, by ordinary straight cartridge type chimney discharged to the high-altitude.Adopting the purpose of high-altitude chimney is to make chimney breast be in high altitude environment, under high altitude environment, air velocity is greater than ground environment, according to bernoulli principle, therefore the pressure of chimney import department can pump to outlet side by side with the flue gas of import department fast greater than the pressure in exit.

Yet the cost of building on the one hand the high-altitude chimney is larger, and on the other hand, because the variation of weather is larger, even if under high altitude environment, the variation of wind speed is also very large, even meets sometimes without wind condition, and this moment, the smoke evacuation ability of chimney was just very limited.

Summary of the invention

For the problems referred to above, the purpose of this utility model is to provide a kind of self adaptation chimney, and this self adaptation chimney can provide stronger fume emission effect under low Altitude, to reducing the construction costs, and can make chimney outlet keep stable negative pressure, to stablize the emission effect of chimney.

The technical scheme that its technical problem that solves the utility model adopts is: this self adaptation chimney comprises chimney body straight up, described chimney body exit is provided with an exhaust fan with the chimney coaxial line, and this exhaust fan articulates by rotating shaft with the fixed mount that is fixed on the chimney body; Also be provided with a buncher on the described fixed mount, described rotating shaft is driven by this buncher; Be provided with the pressure sensor that is used for sensing wind-force more than three around the described chimney body exit, each pressure sensor input control circuit, and control the rotating speed of described buncher by described control circuit, make the transducing signal of described pressure sensor become the inverse correlation relation with the rotating speed of described buncher.

As preferably, be the band drive mechanism between described buncher and the described rotating shaft, described buncher is arranged at belt wheel in the described rotating shaft by belt traction.

As preferably, described sensor has four, be uniformly distributed in described chimney body around, to adapt to various wind direction.

As preferably, described control circuit comprises an adder calculator at least, the transducing signal of each described sensor is carried out add operation, and generate the matched moulds analog signal; An inverse proportion amplifying circuit, output is the control electric current that inverse correlation concerns with described matched moulds analog signal, and the described control function of current is in described buncher.

As preferably, described buncher is an inorganic variable speed electric motors, particularly, thereby can change continuously adaptively rotating speed.

The beneficial effects of the utility model are: this self adaptation chimney is provided with discharge directions and is from bottom to top exhaust fan in the exit of chimney body, therefore can provide an additional negative pressure at chimney outlet by the rotation of exhaust fan, to strengthen the emission effect of chimney; For conserve energy, the size of this additional negative pressure suffers restraints, that is, very fast when natural wind speed, that is natural wind is when larger, and described sensor senses signal is larger, then by the control action of described control circuit, described buncher is rotated with slower speed; Otherwise buncher is then with faster speed rotation, and so, the original negative pressure that cooperates the nature wind speed to produce can make the chimney body exit keep comparatively stable negative pressure, to stablize the emission effect of chimney.And because the effect of described additional negative pressure, this self adaptation chimney can provide stronger fume emission effect under low Altitude, reduced construction cost.

Description of drawings

Fig. 1 is the structural representation of this self adaptation chimney;

Fig. 2 is the control structure figure of this self adaptation chimney.

Among the figure 1, chimney body; 2, fixed mount; 3, exhaust fan; 4, sensor; 5, control circuit; 6, motor; 36, belt wheel.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further specified:

Figure 1 shows that an embodiment schematic diagram of the present utility model, comprise chimney body 1 straight up, described chimney body 1 exit is provided with an exhaust fan 3 with the chimney coaxial line, and this exhaust fan 3 articulates by rotating shaft with the fixed mount 2 that is fixed on the chimney body 1; Also be provided with a buncher 6 on the described fixed mount 2, described rotating shaft is driven by this buncher 6; Uniform 4 pressure sensors 4 that are used for sensing wind-force around described chimney body 1 exit, described sensor 4 related described bunchers 6, its control structure relation as shown in Figure 2, each described sensor 4 input control circuit 5, and by the rotating speed of the described buncher 6 of described control circuit 5 controls, described control circuit 5 makes the transducing signal of described sensor 4 become inverse correlation to concern with the rotating speed of described buncher 6.

Above-mentioned self adaptation chimney is the band drive mechanism between described buncher 6 and the described rotating shaft, described buncher 6 is arranged at belt wheel 36 in the described rotating shaft by belt traction.

Described control circuit 5 comprises an adder calculator, transducing signal to each described sensor 4 carries out add operation, and generation matched moulds analog signal, the summation of the wind-force that the sensor that described matched moulds analog signal is all directions senses, for chimney, irrelevant by negative pressure and wind direction that wind-force consists of, only concern the wind-force size, therefore, each gets final product to the wind-force summation only to need sensing; Also comprise an inverse proportion amplifying circuit, output is the control electric current that inverse correlation concerns with described matched moulds analog signal, and the described control function of current is in described buncher 6; Described buncher 6 is an inorganic variable speed electric motors, particularly, thereby can change continuously adaptively rotating speed.

This self adaptation chimney is provided with discharge directions and is from bottom to top exhaust fan 3 in the exit of chimney body 1, therefore can provide an additional negative pressure at chimney outlet by the rotation of exhaust fan 3, to strengthen the emission effect of chimney; And the size of this additional negative pressure suffers restraints, and namely when natural wind was larger, described sensor 4 transducing signals were larger, then by the control action of described control circuit 5, described buncher 6 is rotated with slower speed; Otherwise 6 of bunchers rotate with speed faster, so, the original negative pressure that cooperates the nature wind speed to produce, can make chimney body 1 exit keep comparatively stable negative pressure, stablize the emission effect of chimney, and avoid in the larger situation of natural wind, wasting motor kinetic energy; In addition, because the effect of described additional negative pressure, this self adaptation chimney can provide stronger fume emission effect under low Altitude, reduced construction cost.

The above only is preferred embodiment of the present utility model, and is in order to limit the utility model, not all within spirit of the present utility model and principle, any modification of doing, is equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims

1. self adaptation chimney, comprise chimney body (1) straight up, it is characterized in that: described chimney body (1) exit is provided with an exhaust fan (3) with the chimney coaxial line, and this exhaust fan (3) articulates by rotating shaft with the fixed mount (2) that is fixed on the chimney body (1); Also be provided with a buncher (6) on the described fixed mount (2), described rotating shaft is driven by this buncher (6); Be provided with the pressure sensor (4) that is used for sensing wind-force more than three around described chimney body (1) exit, each pressure sensor (4) input control circuit (5), and control the rotating speed of described buncher (6) by described control circuit (5), make the transducing signal of described pressure sensor (4) become the inverse correlation relation with the rotating speed of described buncher (6).

2. self adaptation chimney according to claim 1 is characterized in that: be the band drive mechanism between described buncher (6) and the described rotating shaft, described buncher (6) is arranged at belt wheel (36) in the described rotating shaft by belt traction.

3. self adaptation chimney according to claim 1, it is characterized in that: described sensor (4) has four, be uniformly distributed in described chimney body (1) around.

4. according to claim 1 or 3 described self adaptation chimneys, it is characterized in that: described control circuit (5) comprises an adder calculator at least, the transducing signal of each described sensor (4) is carried out add operation, and generate the matched moulds analog signal; An inverse proportion amplifying circuit, output is the control electric current that inverse correlation concerns with described matched moulds analog signal, and the described control function of current is in described buncher (6).

5. self adaptation chimney according to claim 1, it is characterized in that: described buncher (6) is an inorganic variable speed electric motors, particularly.