Device for reducing unit consumption of compressed air

Abstract

The utility model relates to the technical field of air compressor equipment, and provides a device for reducing unit consumption of compressed air, which comprises an air filter, an air compressor, a cooler and a dryer, a first delivery pipe is arranged between the air filter and the air compressor, and a second delivery pipe is arranged between the air compressor and the cooler; a third conveying pipe is arranged between the cooler and the drying machine, a first flow control valve is arranged on the third conveying pipe, the third conveying pipe is connected with a fourth conveying pipe, one end of the fourth conveying pipe is located between the first flow control valve and the cooler, and the other end of the fourth conveying pipe is connected with a compressed air pipe network. And a second flow control valve is arranged on the fourth conveying pipe. According to the method, part of the compressed air is dried, and the dried air and the non-dried common water-containing compressed air are mixed in the compressed air pipe network to form compressed air without free water to be sent to a user, so that unnecessary diffusion waste caused by drainage is reduced, and the unit consumption of the compressed air is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of air compressor equipment, and in particular to a device for reducing the unit consumption of compressed air. Background Art

[0002] In the steel production industry, the main uses of compressed air can be divided into: sintering pneumatic conveying, blast furnace blowing, continuous casting steam spray cooling, converter bottom blowing, steel strip surface blowing, various pneumatic instrument valves, air motors, pulse bag filters, etc.

[0003] At present, the process flow of ordinary compressed air is mainly as follows: the air is filtered by the air intake filter and then enters the air compressor. The air compressor compresses the air to the specified pressure value (about 0.8Mpa) and then sends it to the cooler. The cooler cools the compressed air to about 40℃. The cooled compressed air is then sent to various users through the compressed air pipeline network.

[0004] Since the compressed air enters the user through the compressed air pipeline network, it is a cooling process, so water will be precipitated in this process. In order to ensure the stable gas consumption of the user, it is necessary to add a drain valve at the low point and check and drain it regularly. This measure can also prevent the pipe from freezing in winter. However, it also causes 10%-30% of the compressed air to be released. Due to the resistance loss of the dryer system, if all the compressed air is processed by the dryer before being sent to the pipeline network, in order to meet the gas demand of the subsequent process, the air compressor outlet pressure is often increased by 0.1-0.2MPa. For every 0.1MPa increase in the exhaust pressure of the air compressor, its energy consumption will increase by 3%-10%. Therefore, we have designed a device to reduce the unit consumption of compressed air to solve the above problem. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a device for reducing the unit consumption of compressed air, thereby solving the problems of large discharge volume and high energy consumption of the compressed air pipeline network in the prior art.

[0006] The present invention provides a device for reducing compressed air consumption, which adopts the following technical solutions:

[0007] A device for reducing compressed air consumption includes an air filter, an air compressor, a cooler, and a dryer. A first delivery pipe is provided between the air filter and the air compressor, a second delivery pipe is provided between the air compressor and the cooler, a third delivery pipe is provided between the cooler and the dryer, a first flow control valve is provided on the third delivery pipe, the third delivery pipe is connected to a fourth delivery pipe, one end of the fourth delivery pipe is located between the first flow control valve and the cooler, the other end of the fourth delivery pipe is connected to a compressed air pipeline network, a second flow control valve is provided on the fourth delivery pipe, a fifth delivery pipe is connected to the dryer, and the fifth delivery pipe is connected to the compressed air pipeline network.

[0008] Preferably, a first filter is provided on the third delivery pipe, and the first filter is located between the dryer and the first flow control valve.

[0009] Preferably, a second filter is provided on the fifth delivery pipe.

[0010] Preferably, a pressure gauge is provided on the third delivery pipe, and the pressure gauge is located between the cooler and the fourth delivery pipe.

[0011] Preferably, the third delivery pipe is connected to a relief pipe, the relief pipe is located between the pressure gauge and the fourth delivery pipe, and a relief valve is provided on the relief pipe.

[0012] Preferably, a muffler is provided on the emission pipe.

[0013] Preferably, a valve is provided on the fifth delivery pipe.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] The present application arranges a third delivery pipe and a fourth delivery pipe at the output end of the cooler. The third delivery pipe delivers a portion of the compressed air to the dryer, which dries the compressed air. The dried compressed air is delivered to the compressed air network through the fifth delivery pipe. The fourth delivery pipe delivers the other portion of the compressed air directly to the compressed air network. The dried gas is mixed with the undried ordinary water-containing compressed air in the compressed air network to form compressed air without free water and delivered to the user, thereby reducing unnecessary emission waste caused by drainage and reducing the unit consumption of compressed air. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic structural diagram of some embodiments of the present utility model.

[0018] The reference numerals are:

[0019] 1. Air filter; 2. Air compressor; 3. Cooler; 4. Dryer; 5. First delivery pipe; 6. Second delivery pipe; 7. Third delivery pipe; 8. First flow control valve; 9. Fourth delivery pipe; 10. Compressed air pipeline network; 11. Second flow control valve; 12. Fifth delivery pipe; 13. First filter; 14. Second filter; 15. Pressure gauge; 16. Vent pipe; 17. Vent valve; 18. Muffler; 19. Valve; 20. Drain valve. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings or the orientation or positional relationship commonly used when the product of the present application is used, and are merely for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0024] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "mount", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] Embodiment

[0027] As shown in Figure 1 The device for reducing unit consumption of compressed air described in the embodiments of the present application comprises an air filter 1, an air compressor 2, a cooler 3 and a dryer 4. A first conveying pipe 5 is arranged between the air filter 1 and the air compressor 2. A second conveying pipe 6 is arranged between the air compressor 2 and the cooler 3. A third conveying pipe 7 is arranged between the cooler 3 and the dryer 4. A first flow control valve 8 is arranged on the third conveying pipe 7. The third conveying pipe 7 is connected with a fourth conveying pipe 9. One end of the fourth conveying pipe 9 is located between the first flow control valve 8 and the cooler 3. The other end of the fourth conveying pipe 9 is connected with a compressed air pipe network 10. A second flow control valve 11 is arranged on the fourth conveying pipe 9. The dryer 4 is connected with a fifth conveying pipe 12. The fifth conveying pipe 12 is connected with the compressed air pipe network 10.

[0028] In use, the air filter 1 filters the air, the filtered air enters the air compressor 2 through the first conveying pipe 5, the air compressor 2 compresses the air, the compressed air enters the cooler 3 through the second conveying pipe 6, the cooler 3 cools the compressed air, the cooled compressed air enters the third conveying pipe 7, a part of the compressed air (about one third of the total amount of compressed air) enters the dryer 4 through the third conveying pipe 7, the compressed air is dried by the dryer 4, and the dried compressed air is conveyed to the compressed air pipe network 10 through the fifth conveying pipe 12, and the other part of the compressed air (about two thirds of the total amount of compressed air) is conveyed to the compressed air pipe network 10 through the fourth conveying pipe 9, and the dried gas and the ordinary water-containing compressed air are mixed in the compressed air pipe network 10, and since the exhaust temperature after cooling in winter is about 30℃, the 0.7Mpa compressed air one third of which is dried has a dew point lower than-40℃ and does not contain water, and the two third saturated gas has an absolute humidity of 30.6g / m 3 After mixing, the absolute humidity is about 20.4g / m 3 , the dew point temperature is about 23℃, and the pipe network temperature drop is basically free of water when the temperature drop is 7℃, in addition, the pipe network pressure is gradually reduced with the temperature drop and the use of the user, and the dew point temperature also decreases, and in actual use, there is no free water, thereby reducing unnecessary waste due to drainage and reducing the unit consumption of compressed air.

[0029] In this embodiment, the third conveying pipe 7 is provided with a first filter 13, the first filter 13 is located between the dryer 4 and the first flow control valve 8, and the first filter 13 is used to filter the compressed air entering the dryer 4, thereby improving the cleanliness of the compressed air entering the inside of the dryer 4.

[0030] In this embodiment, the fifth conveying pipe 12 is provided with a second filter 14, and the second filter 14 is used to filter the compressed air dried by the dryer 4 again, thereby further improving the cleanliness of the compressed air.

[0031] In this embodiment, the third conveying pipe 7 is provided with a pressure gauge 15, and the pressure gauge 15 is located between the cooler 3 and the fourth conveying pipe 9, and the pressure gauge 15 is used to detect the air pressure inside the third conveying pipe 7.

[0032] In this embodiment, the third conveying pipe 7 is connected with a bleeding pipe 16, the bleeding pipe 16 is located between the pressure gauge 15 and the fourth conveying pipe 9, and the bleeding pipe 16 is provided with a bleeding valve 17, when the reading of the pressure gauge 15 is abnormal, the bleeding valve 17 is opened, the compressed air is discharged through the bleeding pipe 16, and the purpose of pressure relief is achieved.

[0033] In this embodiment, the bleeding pipe 16 is provided with a silencer 18, and the silencer 18 is used to weaken the noise generated when the compressed air is discharged.

[0034] In this embodiment, the fifth delivery pipe 12 is provided with a valve 19. When it is necessary to overhaul the drying machine 4, if it is necessary to deliver compressed air to the compressed air network 10, the air compressor 2 is turned on, the first flow control valve 8 and the valve 19 are closed, and the second flow control valve 11 is opened, so that the air flow enters the compressed air network 10 through the fourth delivery pipe 9.

[0035] The above only is the preferred embodiment of the present application, and is not used to limit the present application, and the present application can have various changes and changes for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A device for reducing compressed air consumption, characterized in that: It includes an air filter, an air compressor, a cooler and a dryer. A first delivery pipe is provided between the air filter and the air compressor, a second delivery pipe is provided between the air compressor and the cooler, a third delivery pipe is provided between the cooler and the dryer, a first flow control valve is provided on the third delivery pipe, the third delivery pipe is connected to a fourth delivery pipe, one end of the fourth delivery pipe is located between the first flow control valve and the cooler, the other end of the fourth delivery pipe is connected to a compressed air pipeline network, a second flow control valve is provided on the fourth delivery pipe, the dryer is connected to a fifth delivery pipe, and the fifth delivery pipe is connected to a compressed air pipeline network.

2. The device for reducing compressed air consumption according to claim 1, characterized in that: The third delivery pipe is provided with a first filter, and the first filter is located between the dryer and the first flow control valve.

3. The device for reducing compressed air consumption according to claim 2, characterized in that: The fifth delivery pipe is provided with a second filter.

4. The device for reducing compressed air consumption according to claim 1, characterized in that: The third delivery pipe is provided with a pressure gauge, and the pressure gauge is located between the cooler and the fourth delivery pipe.

5. The device for reducing compressed air consumption according to claim 4, characterized in that: The third delivery pipe is connected to a relief pipe, the relief pipe is located between the pressure gauge and the fourth delivery pipe, and a relief valve is provided on the relief pipe.

6. The device for reducing compressed air consumption according to claim 5, characterized in that: The emission pipe is provided with a muffler.

7. The device for reducing compressed air consumption according to claim 1, characterized in that: The fifth delivery pipe is provided with a valve.

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