A grate cooler air beam pressure stabilizing and air control device

Abstract

The present invention discloses a grate cooler inflatable beam pressure stabilizing and wind control device, comprising a first silent pressure diffuser, a flow stabilizing tube, a second silent pressure diffuser, a rectifier pressure stabilizing tube and a pressure dividing tube; the first silent pressure diffuser and the second silent pressure diffuser are both arranged in a V-shaped structure, the large end of the first silent pressure diffuser is connected to the small end of the second silent pressure diffuser through the flow stabilizing tube, and the large end of the second silent pressure diffuser is connected to at least two of the pressure dividing tubes; a rectifier pressure stabilizing impeller is arranged in the rectifier pressure stabilizing tube, a main shaft is fixedly installed in the middle of the rectifier pressure stabilizing impeller, the main shaft is rotatably installed in the rectifier pressure stabilizing tube, a driving motor and a reducer are fixedly installed on the outside of the rectifier pressure stabilizing tube, the output shaft of the driving motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the main shaft. The device has a simple structure, is easy to process and manufacture, and the wind pressure of the wind blown out from the pressure dividing tube is uniform and stable.

Description

Technical Field

[0001] The invention relates to the technical field of material layer cooling and heat exchange on a grate bed of a grate cooler, and in particular to a pressure stabilizing and wind controlling device for an air beam of a grate cooler. Background Art

[0002] Grate cooler is an important main equipment in the clinker burning system of cement plant. Its main function is to cool and transport cement clinker. At the same time, it provides hot air for rotary kiln and decomposition furnace, and is the main equipment for heat recovery in the burning system.

[0003] At present, the air supply system of the third-generation grate cooler's pneumatic beam has an uneven air supply problem. The wind in the grate cooler's pneumatic beam is sometimes large and sometimes small, and some material layers are blown through. Without wind, the heat exchange effect of the clinker is not good. The reason is that the gas is unevenly distributed from the fan outlet to the pneumatic beam inlet, and the dynamic pressure loss of the fan outlet pipeline is also large.

[0004] The current domestic practice is to connect a straight pipe from the fan outlet, and separate several pressure-dividing pipes when close to the grate cooler. The gas tends to be discharged through the pipe closest to the main pipe, and when the pressure on each beam is different, the gas tends to be discharged through the air-filled beam with relatively low pressure. This can easily cause the clinker on the grate bed to be blown through. After the blow-through, the wind is blown out from one beam, and the remaining beams cause the fan to short-circuit without wind, and the clinker on the grate bed cannot be cooled. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by this patent application is: how to provide a grate cooler air beam pressure stabilizing and wind control device with a simple structure, easy processing and manufacturing, and uniform and stable wind pressure.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A pressure-stabilizing and wind-controlling device for an inflatable beam of a grate cooler, comprising a first silent pressure diffuser, a flow stabilizer, a second silent pressure diffuser, a rectifier pressure-stabilizing tube and a voltage-dividing tube; the first silent pressure diffuser and the second silent pressure diffuser are both arranged in a V-shaped structure, the large end of the first silent pressure diffuser is connected to the small end of the second silent pressure diffuser through the flow stabilizer, the first silent pressure diffuser, the flow stabilizer, the second silent pressure diffuser, the rectifier pressure-stabilizing tube and the voltage-dividing tube together form an airflow channel; a rectifier pressure-stabilizing impeller is arranged in the rectifier pressure-stabilizing tube, a main shaft is fixedly installed in the middle of the rectifier pressure-stabilizing impeller, the main shaft is rotatably installed in the rectifier pressure-stabilizing tube, the rectifier pressure-stabilizing impeller is arranged in the vertical section of the rectifier pressure-stabilizing tube, a drive motor and a reducer are fixedly installed on the outside of the rectifier pressure-stabilizing tube, the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the main shaft.

[0008] In this way, the small end of the first silent diffuser is fixedly connected to the fan outlet interface, and the fan outlet interface is connected to the air outlet of the fan through the fan outlet soft connection, and the pressure divider is used to connect to the air-filled beam. The device has a simple structure and is easy to design and manufacture. When the device is used, it is more efficient and energy-saving. The effect of converting the dynamic pressure at the fan outlet into static pressure is more efficient. When the airflow at the fan outlet passes through the rectifier and voltage-stabilizing tube and the rectifier and voltage-stabilizing impeller, the air volume of the airflow is more uniform, and the air volume and pressure entering each air-filled beam are uniform. This allows the material layer on the grate plate of the grate cooler to obtain a uniform air volume and pressure, so that the cooling effect of the clinker on the grate plate is better, and the strength of the clinker is improved. At the same time, the secondary air temperature entering the rotary kiln system is also increased, and the coal consumption is reduced. Due to the improved heat exchange effect, the power generation of the waste heat at the head of the rotary kiln is also increased.

[0009] It needs further explanation:

[0010] When the gas is blown out from the outlet of the fan, it undergoes a preliminary static pressure conversion when passing through the first static pressure diffuser, and the gas flow rate decreases. Due to the dynamic pressure of the gas, when the gas flow rate V becomes lower, the dynamic pressure of the gas in the pipeline will decrease, the energy consumption of the gas flow will decrease, the dynamic pressure of the gas is converted into static pressure energy, and the gas energy loss is reduced; after the static pressure conversion through the first static pressure diffuser, the gas still has a very high flow rate, and there are eddies and turbulence in the airflow. When the gas passes through the first static pressure diffuser and enters the steady flow tube, the gas gradually changes from turbulence to regular laminar flow, thereby reducing the eddy loss of the gas flow; the rectified gas enters When passing through the second static pressure diffuser, the gas flow rate is further reduced, the dynamic pressure loss is further reduced, and the static pressure of the gas can be significantly improved; finally, when the gas enters the rectifier and voltage-stabilizing tube, the rectifier and voltage-stabilizing impeller rectifies and stabilizes the gas, because the outlet of the rectifier and voltage-stabilizing tube is connected to the inlet of multiple air-filled beams. When the airflow enters the rectifier and voltage-stabilizing tube, the airflow goes out of the pipe closest to itself and the pipe with the lowest pressure. This is the characteristic of the fluid. However, the gas is evenly pressured and diverted after passing through the rectifier and voltage-stabilizing impeller. Each airflow passing through the pressure-dividing tube has the same pressure and flow, so the wind entering each air-filled beam of the grate cooler is uniform and equal.

[0011] Furthermore, the angle between the upper surface and the lower surface of the first silent diffuser is 28° to 40°, and the angle between the upper surface and the lower surface of the second silent diffuser is 28° to 40°.

[0012] In this way, the diffusion area can be better increased and the static pressure conversion effect can be improved.

[0013] Furthermore, the length of the rectifying and voltage-stabilizing tube is greater than or equal to three times the length of the diameter of a circle having the same cross-sectional area as the rectifying and voltage-stabilizing tube.

[0014] In this way, the cross-sectional length of the rectifying and voltage-stabilizing tube is A, and the width is B, then the cross-sectional area of ​​the rectifying and diffusing tube is S = A × B, and the diameter of the circle corresponding to the area S is (because the circle area D is the diameter), then the length L of the rectifying and diffusing tube is at least equal to = 3 × D. It can better improve the rectifying effect of the airflow, and improve the stability and uniformity of the airflow entering the inflatable beam.

[0015] Furthermore, the first silent diffuser and the flow stabilizer, the flow stabilizer and the second silent diffuser, the second silent diffuser and the rectifier and voltage regulator, and the rectifier and voltage divider are all connected by flange bolts.

[0016] In this way, it is convenient to install and disassemble, and the cost is low.

[0017] Furthermore, five voltage-dividing tubes are provided.

[0018] In this way, the five inflatable beams can be better connected.

[0019] Furthermore, the blades of the rectifying and voltage-stabilizing impeller are straight plates.

[0020] In this way, a straight plate structure is adopted, the moment of inertia is smaller, the energy consumption is lower, and the blades are directly welded to the main shaft, which is convenient for production.

[0021] Furthermore, the flow stabilizer tube and the rectifying and voltage-stabilizing tube are fixedly installed downward with a support column; along the airflow direction, the vertical heights of the first silent pressure diffuser tube, the flow stabilizer tube, the second silent pressure diffuser tube, the rectifying and voltage-stabilizing tube and the voltage-dividing tube are continuously reduced.

[0022] In this way, along the airflow direction, the first silent diffuser, the flow stabilizer, the second silent diffuser, the rectifier and the voltage divider are shortened in height and increased in width, which can better stabilize the flow rate of the gas.

[0023] In summary, the device can better stabilize the air flow, so that the air flow pressure and flow rate entering the inflatable beam are uniform and stable, which enables the material layer on the grate plate of the grate cooler to obtain uniform air volume and pressure, so that the cooling effect of the clinker on the grate plate is better, and the strength of the clinker is improved. At the same time, it also increases the secondary air temperature entering the rotary kiln system, reduces coal consumption, and improves the heat exchange effect. At the same time, it also increases the waste heat power generation of the rotary kiln head. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of the grate cooler air beam pressure stabilizing and wind controlling device disclosed in the present invention.

[0025] Figure 2 for Figure 1 A-direction view.

[0026] Figure 3 for Figure 1 Top view of the .

[0027] Figure 4 The present invention discloses an assembly diagram of a grate cooler air beam pressure stabilizing and wind controlling device and a fan. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-4 A grate cooler air beam pressure stabilizing and wind control device comprises a first silent pressure diffuser 1, a flow stabilizing tube 2, a second silent pressure diffuser 3, a rectifier pressure stabilizing tube 4 and a pressure dividing tube 5; the first silent pressure diffuser 1 and the second silent pressure diffuser 3 are both arranged in a V-shaped structure, the large end of the first silent pressure diffuser 1 is connected to the small end of the second silent pressure diffuser 3 through the flow stabilizing tube 2, the large end of the second silent pressure diffuser 3 is connected to at least two of the pressure dividing tubes 5, the first silent pressure diffuser 1, the flow stabilizing tube 2, the second silent pressure diffuser 3, The rectifier and voltage-stabilizer tube 4 and the voltage-dividing tube 5 together form an airflow channel; a rectifier and voltage-stabilizer impeller 6 is arranged in the rectifier and voltage-stabilizer tube 4, a main shaft is fixedly installed in the middle of the rectifier and voltage-stabilizer impeller 6, the main shaft is rotatably installed in the rectifier and voltage-stabilizer tube 4, the rectifier and voltage-stabilizer impeller 6 is arranged in the vertical section of the rectifier and voltage-stabilizer tube 4, a drive motor and a reducer 7 are fixedly installed on the outside of the rectifier and voltage-stabilizer tube 4, the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the main shaft.

[0030] In this way, the small end of the first silent diffuser 1 is fixedly connected to the outlet interface of the fan 91, and the fan outlet interface 91 is connected to the air outlet of the fan 9 through the fan outlet soft connection 92, and the pressure dividing tube 5 is used to connect with the air-filled beam. The device has a simple structure and is easy to design and manufacture. When the device is used, it is more efficient and energy-saving. The effect of converting the dynamic pressure at the fan outlet into static pressure is more efficient. When the airflow at the fan outlet passes through the rectifier and voltage-stabilizing tube and the rectifier and voltage-stabilizing impeller, the air volume of the airflow is more uniform, and the air volume and pressure entering each air-filled beam are uniform. This allows the material layer on the grate plate of the grate cooler to obtain a uniform air volume and pressure, so that the cooling effect of the clinker on the grate plate is better, and the strength of the clinker is improved. At the same time, the secondary air temperature entering the rotary kiln system is also increased, and the coal consumption is reduced. Due to the improved heat exchange effect, the power generation of the waste heat at the head of the rotary kiln is also increased.

[0031] It needs further explanation:

[0032] When the gas is blown out from the outlet of the fan 9, it undergoes a preliminary static pressure conversion when passing through the first static pressure diffuser, and the flow rate of the gas decreases. Due to the dynamic pressure of the gas, when the flow rate V of the gas becomes lower, the dynamic pressure of the gas in the pipeline will decrease, the energy consumption of the gas flow will decrease, the dynamic pressure of the gas is converted into static pressure energy, and the gas energy loss is reduced; after the static pressure conversion through the first static pressure diffuser, the gas still has a very high flow rate, and there are eddies and turbulences in the air flow. When the gas passes through the first static pressure diffuser and enters the steady flow tube, the gas gradually changes from turbulence to regular laminar flow, thereby reducing the eddy loss of the gas flow; the rectified gas enters When passing through the second static pressure diffuser, the gas flow rate is further reduced, the dynamic pressure loss is further reduced, and the static pressure of the gas can be significantly improved; finally, when the gas enters the rectifier and voltage-stabilizing tube, the rectifier and voltage-stabilizing impeller rectifies and stabilizes the gas, because the outlet of the rectifier and voltage-stabilizing tube is connected to the inlet of multiple air-filled beams. When the airflow enters the rectifier and voltage-stabilizing tube, the airflow goes out of the pipe closest to itself and the pipe with the lowest pressure. This is the characteristic of the fluid. However, the gas is evenly pressured and diverted after passing through the rectifier and voltage-stabilizing impeller. Each airflow passing through the pressure-dividing tube has the same pressure and flow, so the wind entering each air-filled beam of the grate cooler is uniform and equal.

[0033] Furthermore, the angle between the upper surface and the lower surface of the first silent diffuser 1 is 28° to 40°, and the angle between the upper surface and the lower surface of the second silent diffuser 3 is 28° to 40°.

[0034] In this way, the diffusion area can be better increased and the static pressure conversion effect can be improved.

[0035] Furthermore, the length of the rectifying and voltage-stabilizing tube 4 is greater than or equal to three times the length of the diameter of a circle having the same cross-sectional area as the rectifying and voltage-stabilizing tube 4 .

[0036] In this way, the cross-sectional length of the rectifying and voltage-stabilizing tube is A, and the width is B, then the cross-sectional area of ​​the rectifying and diffusing tube is S = A × B, and the diameter of the circle corresponding to the area S is (because the circle area D is the diameter), then the length L of the rectifying and diffusing tube is at least equal to = 3 × D. It can better improve the rectifying effect of the airflow, and improve the stability and uniformity of the airflow entering the inflatable beam.

[0037] Furthermore, the first silent diffuser 1 and the flow stabilizer 2, the flow stabilizer 2 and the second silent diffuser 3, the second silent diffuser 3 and the rectifier voltage stabilizer 3, and the rectifier voltage stabilizer 4 and the voltage divider 5 are all connected by flange bolts.

[0038] In this way, it is convenient to install and disassemble, and the cost is low.

[0039] Furthermore, five voltage-dividing tubes 5 are provided.

[0040] In this way, the five inflatable beams can be better connected.

[0041] Furthermore, the blades of the rectifying and voltage-stabilizing impeller 6 are straight plates.

[0042] In this way, a straight plate structure is adopted, the moment of inertia is smaller, the energy consumption is lower, and the blades are directly welded to the main shaft, which is convenient for production.

[0043] Furthermore, the flow stabilizer tube 2 and the rectifying and voltage-stabilizing tube 4 are fixedly installed downward with a support column 8; along the airflow direction, the first silent diffuser tube 1, the flow stabilizer tube 2, the second silent diffuser tube 3, the rectifying and voltage-stabilizing tube 4 and the voltage-dividing tube 5 are continuously reduced in height in the vertical direction.

[0044] In this way, along the airflow direction, the first silent diffuser, the flow stabilizer, the second silent diffuser, the rectifier and the voltage divider are shortened in height and increased in width, which can better stabilize the flow rate of the gas.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A grate cooler air beam pressure stabilizing and wind control device, characterized in that: It includes a first silent diffuser, a flow stabilizer, a second silent diffuser, a rectifier and a voltage-dividing tube; the first silent diffuser and the second silent diffuser are both arranged in a V-shaped structure, the large end of the first silent diffuser is connected to the small end of the second silent diffuser through the flow stabilizer, the large end of the second silent diffuser is connected to at least two of the voltage-dividing tubes, the first silent diffuser, the flow stabilizer, the second silent diffuser, the rectifier and the voltage-dividing tube together form an airflow channel; a rectifier and voltage-stabilizing impeller is arranged in the rectifier and voltage-stabilizing tube, a main shaft is fixedly installed in the middle of the rectifier and voltage-stabilizing impeller, the main shaft is rotatably installed in the rectifier and voltage-stabilizing tube, the rectifier and voltage-stabilizing impeller is arranged in the vertical section of the rectifier and voltage-stabilizing tube, a drive motor and a reducer are fixedly installed on the outside of the rectifier and voltage-stabilizing tube, the output shaft of the drive motor is connected to the input shaft of the reducer, and the output shaft of the reducer is fixedly connected to the main shaft.

2. The grate cooler air beam pressure stabilizing and wind controlling device according to claim 1, characterized in that: The angle between the upper surface and the lower surface of the first silent diffuser is 28° to 40°, and the angle between the upper surface and the lower surface of the second silent diffuser is 28° to 40°.

3. The grate cooler air beam pressure stabilizing and wind controlling device according to claim 2, characterized in that: The length of the rectifying and voltage-stabilizing tube is greater than or equal to three times the length of the diameter of a circle having the same cross-sectional area as the rectifying and voltage-stabilizing tube.

4. The grate cooler air beam pressure stabilizing and air controlling device according to claim 3, characterized in that: The first silent pressure diffuser and the flow stabilizer, the flow stabilizer and the second silent pressure diffuser, the second silent pressure diffuser and the rectifier voltage stabilizer, and the rectifier voltage stabilizer and the voltage divider are all connected by flange bolts.

5. The grate cooler air beam pressure stabilizing and wind controlling device according to claim 4, characterized in that: There are five voltage divider tubes.

6. The grate cooler air beam pressure stabilizing and wind controlling device according to claim 5, characterized in that: The blades of the rectifying and voltage-stabilizing impeller are straight plates.

7. The grate cooler air beam pressure stabilizing and air controlling device according to claim 6, characterized in that: The flow stabilizing tube and the rectifying and voltage stabilizing tube are fixedly installed downward with a support column; along the airflow direction, the heights of the first silent pressure diffuser, the flow stabilizing tube, the second silent pressure diffuser, the rectifying and voltage stabilizing tube and the voltage divider tube in the vertical direction are continuously reduced.

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