Natural ventilation direct air cooling steam exhaust system

Abstract

The utility model provides a natural ventilation direct air cooling steam exhaust system which comprises a mother pipe arranged in an air cooling tower, and the mother pipe is used for allowing to-be-cooled gas to flow in; a gas outlet of the main pipe is divided into a left outlet and a right outlet and communicated with the gyrotron, a layer-by-layer steam exhaust device is arranged on the gyrotron, the pipeline diameter of the gyrotron is gradually reduced in the direction of gas flow, and the layer-by-layer steam exhaust device is arranged on the gyrotron and used for dividing to-be-cooled gas and enabling the to-be-cooled gas to flow into the cooling triangle. The cooling triangle is arranged on the periphery of the air cooling tower, natural air enters the cooling triangle, and the natural air and to-be-cooled gas are converged in the cooling triangle to form natural air cooling. And the extension mother pipe enters the air cooling tower and then is shunted, so that the problem that shunting is not timely is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of direct air cooling, and in particular relates to a natural ventilation direct air cooling exhaust system. Background Art

[0002] In recent years, my country's demand for clean energy has continued to increase, the call for energy conservation and emission reduction has also been strengthened, and higher requirements have been placed on the efficient, green and sustainable development level of the coal-fired power industry.

[0003] There are two widely used air cooling systems, namely direct air cooling system and indirect air cooling system. In my country, the installed capacity of air cooling units currently in production has exceeded 100 million kilowatts, all of which use mechanical ventilation direct air cooling system or natural ventilation indirect air cooling system. Although the two types of air cooling systems, mechanical ventilation direct air cooling system and natural ventilation indirect air cooling system, have their own characteristics and corresponding application places, they also have their own shortcomings. The natural ventilation direct air cooling system combines the characteristics of these two types of air cooling systems to make up for the shortcomings of the mechanical ventilation direct air cooling system and the indirect air cooling system in energy saving and consumption reduction, noise prevention and control, etc. The natural ventilation direct air cooling system of large power stations has a single heat exchange, high heat exchange efficiency, no fans, no circulating water pumps, and basically no factory electricity.

[0004] In the structure of the natural ventilation direct air-cooled exhaust system, the exhaust pipe is set in a ring shape during air intake. The gas pipeline in the air-cooling tower is usually directly diverted to the exhaust branch pipe at the air inlet, which will cause the high-temperature gas to be diverted untimely during diversion, increase the exhaust pressure drop, and various pumps used for exhausting air during the air cooling process will generate greater noise. Utility Model Content

[0005] The utility model aims to overcome the defect in the prior art that the exhaust main pipe is not timely divided at the air inlet, and provides a natural ventilation direct air cooling exhaust system.

[0006] The utility model provides a natural ventilation direct air cooling exhaust system, comprising a main pipe, which is arranged inside an air cooling tower and is used for unidirectional flow of gas to be cooled;

[0007] A gyrotube, one end of which is connected to the air outlet at the end of the mother tube, and the other end of which is connected to the pipeline at the front end of the air inlet of the mother tube;

[0008] The layer-by-layer steam exhaust device is used to divert the gas to be cooled to the cooling triangle. The layer-by-layer steam exhaust device is evenly arranged at the upper end of the vortex tube. The cooling triangle is connected to the end of the layer-by-layer steam exhaust device. The cooling triangle is used to allow external natural wind to enter for gas cooling.

[0009] A further solution is that the air outlet at the end of the mother pipe is bifurcated into two left and right outlets, and the convoluted tube is connected to the left and right outlets respectively.

[0010] Furthermore, the convoluted tube has an arc-shaped diameter from the air outlet at the end of the mother tube to the front end of the air inlet of the mother tube, and the diameter of the tube gradually decreases.

[0011] Furthermore, the layer-by-layer steam exhaust device comprises a first branch pipe, a second branch pipe and a third branch pipe;

[0012] The first branch pipe is connected to the gyrotube;

[0013] The second branch pipe is connected to the first branch pipe, and at least two second branch pipes are provided;

[0014] The third branch pipe is connected to the second branch pipe, the end of the third branch pipe extends to the outside of the air cooling tower and is connected to the cooling triangle, and at least two third branch pipes are provided;

[0015] The diameters of the first branch pipe, the second branch pipe and the third branch pipe decrease in sequence.

[0016] Furthermore, a fixing frame is provided at the bottom of the cooling triangle, each of the third branch pipes is connected to a cooling triangle, and the cooling triangle is arranged at the periphery of the air cooling tower.

[0017] Furthermore, the cooling triangle is provided with a shutter for adjusting the air intake volume.

[0018] Compared with the prior art, the utility model has the following beneficial effects: the utility model is provided with a mother pipe with a long channel, and two groups of left and right gyroscopic tubes are provided at the gas outlet of the mother pipe, and the mother pipe with a long channel allows the high-temperature gas to have sufficient slow flow time during diversion, so that the gas can fully flow into the gyroscopic tube during diversion;

[0019] The gyrotube is also provided with a layer-by-layer exhaust device to discharge the high-temperature gas in sections, and a cooling triangle is provided at the end of the layer-by-layer exhaust device to allow natural wind to blow into the cooling triangle and directly cool the high-temperature gas at the diversion point;

[0020] The diameter of the overall pipe structure gradually decreases along the flow direction of the gas, which is suitable for the volume of the gas flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The following drawings are only used to illustrate and explain the present invention, and are not intended to limit the scope of the present invention, wherein:

[0022] Figure 1 : Schematic diagram of the structure of natural ventilation direct air cooling exhaust system;

[0023] Figure 2 : Schematic diagram of layer-by-layer steam exhaust device;

[0024] In the figure: 1-main pipe, 101-air outlet, 102-air inlet, 2-convolute, 3-layer-by-layer exhaust device, 4-cooling triangle, 5-first branch pipe, 6-second branch pipe, 7-third branch pipe, 8-fixed frame. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution, design method and advantages of the utility model clearer, the utility model is further described in detail through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0026] like Figure 1 As shown, the utility model provides a natural ventilation direct air cooling exhaust system, including a mother pipe 1, which is arranged inside an air cooling tower and is used for unidirectional flow of gas to be cooled; an air outlet 101 at the end of the mother pipe 1 is bifurcated into two left and right outlets; the steam turbine exhausts steam to the mother pipe 1, and then enters the air cooling tower of the natural ventilation direct air cooling exhaust system through the large-diameter mother pipe 1, and the mother pipe 1 directly penetrates into the air cooling tower, and the air outlet 101 of the mother pipe 1 is split to start air cooling layer by layer;

[0027] A gyrotube 2, one end of which is connected to the gas outlet 101 at the end of the mother tube 1, and the other end of which is connected to the pipe at the front end of the gas inlet 102 of the mother tube 1; the gyrotube 2 is connected to the left and right outlets respectively, and the gyrotube 2 diverts the high-temperature gas in the mother tube 1 to the left and right sides for natural air cooling;

[0028] The diameter structure of the gyrotube 2 is in an arc shape. The gyrotube 2 is connected from the air outlet 101 at the end of the mother tube 1 to the front end of the air inlet 102 of the mother tube 1, and the diameter of the gyrotube 2 gradually decreases along the air flow direction.

[0029] The layer-by-layer steam exhaust device 3 is used to divert the gas to be cooled to the cooling triangle 4. The layer-by-layer steam exhaust device is evenly arranged at the upper end of the vortex tube 2. The cooling triangle 4 is connected to the end of the layer-by-layer steam exhaust device 3. The cooling triangle 4 is used to allow external natural wind to enter and then cool the gas.

[0030] It should be noted that the high-temperature gas flows from the air inlet 102 to the air outlet 101 and is divided into the left and right vortex tubes 2 , and then flows through the layer-by-layer exhaust device 3 from the vortex tubes 2 one by one, and finally flows out to the cooling triangle 4 through the layer-by-layer exhaust device 3 .

[0031] It is worth noting that the layer-by-layer exhaust device 3 is evenly arranged along the pipe diameter direction of the vortex tube 2. In the present embodiment, a total of eight groups are arranged, which are symmetrically arranged along the left and right vortex tubes 2 with the mother tube 1 as the axis. The high-temperature gas flows into the layer-by-layer exhaust device 3 in sequence along the vortex tube 2, and enters the cooling triangle after multiple diversions through the various branch pipes of the layer-by-layer exhaust device 3, and is naturally air-cooled in the cooling triangle.

[0032] Please continue to refer to Figure 1 As shown, the layer-by-layer exhaust device 3 includes a first branch pipe 5, a second branch pipe 6 and a third branch pipe 7;

[0033] The first branch pipe 5 is connected to the gyrotube 2;

[0034] The second branch pipe 6 is connected to the first branch pipe 5, and at least two second branch pipes 6 are provided;

[0035] The third branch pipe 7 is connected to the second branch pipe 6, the end of the third branch pipe 7 extends to the outside of the air cooling tower and is connected to the cooling triangle 4, the end of the third branch pipe 7 is connected to the cooling triangle 4, the cooling triangle 4 is arranged outside the air cooling tower, and at least two third branch pipes 7 are provided. In this embodiment, three third branch pipes 7 are provided, and different numbers of branch pipes can be provided according to the flow rate of the gas to be cooled. If the gas flow rate is large, the number of branch pipes is increased;

[0036] The diameters of the first branch pipe 5 , the second branch pipe 6 and the third branch pipe 7 decrease in sequence.

[0037] A fixing frame 8 is provided at the bottom of the cooling triangle 4, and each of the third branch pipes 7 is connected to a cooling triangle 4;

[0038] The cooling triangle 4 is provided with a shutter for adjusting the air intake amount, and the air intake amount of the cooling triangle 4 can be adjusted according to demand.

[0039] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A natural ventilation direct air cooling exhaust system, characterized in that: include A mother pipe (1), the mother pipe (1) being arranged inside the air cooling tower and used for unidirectional flow of the gas to be cooled; A gyrotube (2), one end of the gyrotube (2) being in communication with the air outlet (101) at the end of the mother tube (1), and the other end of the gyrotube (2) being in communication with the pipeline at the front end of the air inlet (102) of the mother tube (1); The layer-by-layer steam exhaust device (3) is used to divert the gas to be cooled so that the gas to be cooled flows into the cooling triangle (4). The layer-by-layer steam exhaust device is evenly arranged at the upper end of the vortex tube (2). The cooling triangle (4) is connected to the end of the layer-by-layer steam exhaust device (3). The cooling triangle (4) is used to allow external natural wind to enter and then cool the gas.

2. A natural ventilation direct air cooling exhaust system according to claim 1, characterized in that: The gas outlet (101) at the end of the mother tube (1) is bifurcated into two left and right outlets, and the convoluted tube (2) is respectively connected to the left and right outlets.

3. A natural ventilation direct air cooling exhaust system according to claim 1, characterized in that: The gyratory tube (2) has an arc-shaped tube diameter from the air outlet (101) at the end of the mother tube (1) to the front end of the air inlet (102) of the mother tube (1), and the diameter of the tube diameter gradually decreases.

4. A natural ventilation direct air cooling exhaust system according to claim 1, characterized in that: The layer-by-layer steam exhaust device (3) comprises a first branch pipe (5), a second branch pipe (6) and a third branch pipe (7); The first branch pipe (5) is in communication with the gyrotube (2); The second branch pipe (6) is connected to the first branch pipe (5), and at least two second branch pipes (6) are provided; The third branch pipe (7) is connected to the second branch pipe (6), the end of the third branch pipe (7) extends to the outside of the air cooling tower and is connected to the cooling triangle (4), and at least two third branch pipes (7) are provided; The diameters of the first branch pipe (5), the second branch pipe (6) and the third branch pipe (7) decrease in sequence.

5. A natural ventilation direct air cooling exhaust system according to claim 4, characterized in that: A fixing frame (8) is arranged at the bottom of the cooling triangle (4), each of the third branch pipes (7) is connected to a cooling triangle (4), and the cooling triangle (4) is arranged outside the air cooling tower.

6. A natural ventilation direct air cooling exhaust system according to claim 5, characterized in that: The cooling triangle (4) is provided with a shutter for adjusting the air intake volume.

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