Air supply system for air compressor station

Abstract

The present invention discloses an air supply system for an air compressor station, comprising an air compressor unit; a non-purified air storage tank, which is in airflow communication with the air compressor unit; a dryer, which is in airflow communication with the non-purified air storage tank and is used to receive the airflow output from the non-purified air storage tank; an instrument air storage tank, which is in airflow communication with the dryer and is used to receive the airflow passing through the dryer; at least one air-using unit, which is in airflow communication with the non-purified air storage tank and the instrument air storage tank respectively and is used to receive the airflow output by them; an air supply pipe network, comprising a first main road, a second main road, a third main road, a fourth main road, at least one first branch road and at least one second branch road, the first main road is arranged in parallel with the second main road, one end of which is connected to the non-purified air storage tank and the other end is connected to the first branch road, the third main road is arranged in parallel with the fourth main road, one end of which is connected to the instrument air storage tank and the other end is connected to the second branch road, and the first branch road and the second branch road are respectively in airflow communication with the air-using unit.

Description

Background Art

[0002] Instrument gas and power gas are the main types of industrial gases and one of the main power sources for industrial equipment. Due to the increase in the number of production equipment, the extension of the production plant, and the increase in the distance of the gas supply pipeline, the existing air compressor station air supply system is located in a corner of the plant, which makes it impossible for the gas supply end gas-using equipment to respond quickly when an accident occurs or the gas consumption of the intermediate equipment suddenly increases, which easily causes the gas to be unable to be supplied normally, seriously affecting the normal operation of each equipment and the normal production.

[0003] The existing air supply process of the air compression station is as follows: the instrument air, non-purified air and nitrogen supplied to the production workshop are all produced by compressing the ambient air with the screw air compressor of the air compression station. The compressed air enters the non-purified air storage tank, which has two outlets. One outlet is connected to the non-purified air duct network in the factory to each gas usage point, and the other outlet is connected to the dryer. After filtering and drying, instrument air is obtained. Part of the instrument air is transported to the instrument air storage tank to supply gas for the entire factory equipment, and the other part passes through the nitrogen generator, first through the nitrogen buffer tank, and then to each nitrogen gas equipment.

[0004] To sum up, the gas supply is a one-way process, there are terminal gas-consuming equipment, the path is long, the pressure drop is large, and the pressure requirements cannot be met when the gas consumption is large. In addition, the air compressor unit is under high load operation for a long time, and the energy consumption is high. Summary of the invention

[0005] In order to solve the above technical problems, the purpose of the present invention is to provide an air compressor station air supply system that can ensure normal air supply to each air-consuming unit, short air supply response time and stable air pressure.

[0006] To this end, the present invention provides an air supply system for an air compressor station, comprising: an air compressor unit, which is used to compress the air in the environment and output the compressed air to the outside; a non-purified air storage tank, which is in airflow communication with the air compressor unit and is configured to receive the compressed air output from the air compressor unit; a dryer, which is in airflow communication with the non-purified air storage tank and is configured to receive the airflow output from the non-purified air storage tank; an instrument air storage tank, which is in airflow communication with the dryer and is configured to receive the dry airflow filtered by the dryer; at least one air-using unit, which is in airflow communication with the non-purified air storage tank and the instrument air storage tank respectively, and the air-using unit The unit is configured to receive the air flow output from the non-purified air storage tank and / or the instrument air storage tank; the air supply network includes a first main road, a second main road, a third main road, a fourth main road, at least one first branch road and at least one second branch road, the first main road is arranged in parallel with the second main road and one end thereof is connected to the non-purified air storage tank, and the other end is connected to the first branch road, the third main road is arranged in parallel with the fourth main road and one end thereof is connected to the instrument air storage tank, and the other end is connected to the second branch road, and the first branch road and the second branch road are respectively connected to the air flow of the air-consuming unit.

[0007] The air supply system of the air compressor station of the present invention is achieved by setting up an air supply pipe network, wherein the first main road and the second main road are arranged in parallel and one end of the pipe is connected to the non-purified air storage tank, and the other end is connected to the first branch road, so that the first main road and the second main road are used to simultaneously supply non-purified air to the air-consuming units; the third main road and the fourth main road are arranged in parallel and one end of the pipe is connected to the instrument air storage tank, and the other end is connected to the second branch road, so that the third main road and the fourth main road are used to simultaneously supply instrument air to the air-consuming units; when the air consumption of a certain air-consuming unit increases, the air supply pipe network can realize dual-path air replenishment of non-purified air through the first main road and the second main road and dual-path air replenishment of instrument air through the third main road and the fourth main road, and the air replenishment response time is shortened. Compared with the one-way air supply system in the prior art, the pressure of the air compressor station air supply system of the present invention tends to be more stable, and there will be no situation where the local pressure is too high and the terminal pressure is too low, so that the normal air supply of each air-consuming unit can be guaranteed, the air supply response time is short, and the air pressure is stable. In addition, the automatic on / off pressure range of the air compressor unit is reduced, and there is no need to output high pressure, which reduces the load on the air compressor unit, increases the service life of the air compressor unit, and saves electricity resources.

[0008] As a preferred solution of the air supply system of the air compressor station of the present invention, the air-using unit, the first branch, and the second branch are respectively provided in a plurality and the number of the three is equal, and a single air-using unit is provided with one first branch and one second branch. When the number of air-using units increases, each air-using unit can be connected from the branch on the air supply network nearby, thereby introducing more air-using equipment into the air supply system of the air compressor station, so that purified air and non-purified air can be widely used.

[0009] As another preferred solution of the air supply system of the air compressor station of the present invention, regulating valves are respectively provided on the first branch and the second branch, and the regulating valves are configured to adjust the air flow of the corresponding branch or close the branch. By providing regulating valves on the branches corresponding to each gas-consuming unit, when a gas-consuming unit fails, the regulating valve can be used to cut off the branch, thereby not affecting the normal operation of other gas-consuming equipment. In addition, when the gas consumption (non-purified air or instrument air) of a gas-consuming unit increases or decreases, the regulating valve can be used to adjust the air flow on the corresponding branch.

[0010] As another preferred embodiment of the air supply system of the air compressor station of the present invention, the air compressor unit has an intake port for inhaling air from the external environment and an output port for outputting compressed air to the outside, the non-purified air storage tank has a first air inlet, a first air outlet, a second air outlet and an exhaust port, the dryer has a first air inlet and a first air outlet, the instrument air storage tank has a second air inlet, a third air outlet and a fourth air outlet, the output port of the air compressor unit is connected to the first air inlet of the non-purified air storage tank, one end of the first main path is connected to the first air outlet of the non-purified air storage tank, and the other end The first branch is connected to the second main road, one end of the second main road is connected to the second air outlet of the non-purified air storage tank, and the other end is connected to the first branch. The exhaust port of the non-purified air storage tank is connected to the first air inlet of the dryer, and the first air outlet of the dryer is connected to the second air inlet of the instrument air storage tank. The third main road has one end connected to the third air outlet of the instrument air storage tank, and the other end is connected to the second branch. The fourth main road has one end connected to the fourth air outlet of the instrument air storage tank, and the other end is connected to the second branch. The air supply network of the present invention can be arranged in a ring around the factory area, and each gas-consuming unit can be connected to the nearest branch on the air supply network to optimize the layout of the air supply pipeline.

[0011] As another preferred solution of the air supply system of the air compressor station, the overall shape of the air supply pipe network is annular. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structural principle of the present invention;

[0013] Among them: 100, air supply system of air compressor station;

[0014] 1. Air compressor unit; 11. Inlet; 12. Outlet;

[0015] 2. Non-purified air storage tank; 21. First air inlet; 22. First air outlet; 23. Second air outlet; 24. Exhaust outlet;

[0016] 3. dryer; 31. first air inlet; 32. first air outlet;

[0017] 4. Instrument air storage tank; 41. Second air inlet; 42. Third air outlet; 43. Fourth air outlet;

[0018] 5. Gas unit;

[0019] 6. Air supply network; 61. First main line; 62. Second main line; 63. Third main line; 64. Fourth main line; 65. First branch line; 66. Second branch line; 67. Control valve. DETAILED DESCRIPTION

[0020] In order to explain the technical content, structural features, objectives and effects of the invention in detail, the following embodiments are described in detail with reference to the accompanying drawings. The following embodiments are only used to explain the invention in detail and do not limit the protection scope of the invention in any form.

[0021] like Figure 1 As shown, the air supply system 100 of the air compression station includes an air compressor unit 1, a non-purified air storage tank 2, a dryer 3, an instrument air storage tank 4, five air consumption units 5 and an air supply pipe network 6.

[0022] The air compressor unit 1 is used to compress the air in the environment and output the compressed air to the outside. The air compressor unit 1 can select a screw air compressor known in the prior art. The air compressor unit 1 has an intake port 11 for inhaling air from the external environment and an output port 12 for outputting the compressed air to the outside.

[0023] The non-purified air storage tank 2 is connected to the air compressor unit 1 and is configured to receive compressed air output from the air compressor unit 1. Specifically, the non-purified air storage tank 2 has a first air inlet 21, a first air outlet 22, a second air outlet 23 and an exhaust port 24. The output port 12 of the air compressor unit 1 is connected to the first air inlet 21 of the non-purified air storage tank 2.

[0024] The dryer 3 is connected to the non-purified air storage tank 2 and is configured to receive the air flow output from the non-purified air storage tank 2. Specifically, the dryer 3 has a first air inlet 31 and a first air outlet 32. The air outlet 24 of the non-purified air storage tank 2 is connected to the first air inlet 31 of the dryer 3.

[0025] The instrument air storage tank 4 is in airflow communication with the dryer 3 and is configured to receive the dried airflow filtered by the dryer 3. Specifically, the instrument air storage tank 4 has a second air inlet 41, a third air outlet 42 and a fourth air outlet 43, and the first air outlet 32 ​​of the dryer 3 is connected to the second air inlet 41 of the instrument air storage tank 4.

[0026] The five air-using units 5 are respectively connected to the non-purified air storage tank 2 and the instrument air storage tank 4 by air flow, and the air-using units 5 are configured to receive the air flow output from the non-purified air storage tank 2 and / or the instrument air storage tank 4 .

[0027] The air supply network 6 has an annular shape as a whole. It includes a first main road 61, a second main road 62, a third main road 63, a fourth main road 64, five first branches 65 and five second branches 66. The first main road 61 and the second main road 62 are arranged in parallel and one end thereof is connected to the non-purified air storage tank 2 and the other end is connected to the five first branches 65. The third main road 63 and the fourth main road 64 are arranged in parallel and one end thereof is connected to the instrument air storage tank 4 and the other end is connected to the five second branches 66. The five first branches 65 and the five second branches 66 are respectively connected to the air flow of the air consumption unit 5.

[0028] Specifically, one end of the first main path 61 is connected to the first air outlet 22 of the non-purified air storage tank 2, and the other end is connected to the first branch 65. One end of the second main path 62 is connected to the second air outlet 23 of the non-purified air storage tank 2, and the other end is connected to the first branch 65. Thus, the non-purified air is supplied to the five air consumption units 5 at the same time by means of the first main path 61 and the second main path 62.

[0029] One end of the third main path 63 is connected to the third air outlet 42 of the instrument air storage tank 4, and the other end is connected to the second branch 66. One end of the fourth main path 64 is connected to the fourth air outlet 43 of the instrument air storage tank 4, and the other end is connected to the second branch 66. Thus, the third main path 63 and the fourth main path 64 simultaneously supply instrument air to the five air consumption units 5.

[0030] In addition, a single gas unit 5 is provided with a first branch 65 and a second branch 66. Thus, when the number of gas units 5 increases, each gas unit 5 can be connected to a branch on the air supply network 6 nearby, thereby introducing more gas-consuming equipment into the air supply system of the air compressor station, so that instrument air and non-purified air can be widely used.

[0031] The first branch 65 and the second branch 66 are provided with regulating valves 67, respectively, and the regulating valves 67 are configured to adjust the air flow of the corresponding branch or close the branch. By providing regulating valves 67 on the corresponding branches of each gas-using unit 5, when a certain gas-using unit 5 fails, the regulating valve 67 can be used to cut off the branch, thereby not affecting the normal operation of other gas-using equipment. In addition, when the gas consumption (instrument air or non-purified air) of a certain gas-using unit 5 increases or decreases, the regulating valve 67 can be used to adjust the air flow on the corresponding branch.

[0032] In this example, the air supply network 6 can be arranged in a ring around the factory area, and each gas-consuming unit 5 can be connected to a branch on the air supply network 6 nearby, thereby optimizing the layout of the air supply pipeline.

[0033] It is understood by those skilled in the art that in order to adapt to the development of industrial gas plants, increase the number of gas-using equipment and provide a stable gas supply to the gas-using equipment in the plant, the number of gas-using units 5 is not limited to Figure 1 The number shown in the figure can also be designed to be more according to actual needs. Of course, it is not ruled out that only one gas unit is designed to supply air to industrial gas for a separate gas-consuming equipment.

[0034] The working principle is: the air in the external environment is compressed by the air compressor unit 1 and then outputs the compressed air, which enters the non-purified air storage tank 2. The non-purified air storage tank 2 simultaneously delivers the non-purified air to multiple first branches 65 through the first main road 61 and the second main road 62, so as to be used by each gas unit 5. Then the non-purified air storage tank 2 outputs the non-purified air to the dryer 3 for drying and filtering, and then the dryer 3 outputs the filtered dry air flow to the instrument air storage tank 4. The instrument air storage tank 4 simultaneously delivers the instrument air to multiple second branches 66 through the third main road 63 and the fourth main road 64, so as to be used by each gas unit 5. In this process, when the gas consumption of a certain gas-consuming unit 5 increases, the air supply network 6 can realize the dual-channel air supply of non-purified air through the first main road 61 and the second main road 62, and realize the dual-channel air supply of instrument air through the third main road 63 and the fourth main road 64. The air supply response time is shortened. Compared with the one-way air supply system in the prior art, the pressure of the air compressor station air supply system 100 tends to be more stable, and there will be no local pressure being too high or the terminal pressure being too low. It can ensure the normal air supply of each gas-consuming unit 5, the air supply response time is short, and the wind pressure is stable. In addition, the pressure range of the automatic on / off of the air compressor unit is reduced, and it is unnecessary to output high pressure, which reduces the load of the air compressor unit, increases the service life of the air compressor unit, and saves electricity resources.

[0035] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An air supply system for an air compressor station, include: An air compressor unit (1) is used to compress the air in the environment and output the compressed air to the outside; A non-purified air storage tank (2) is connected to the air compressor unit (1) and is configured to receive compressed air output from the air compressor unit (1); A dryer (3) connected to the non-purified air storage tank (2) and configured to receive the air flow output from the non-purified air storage tank (2); An instrument air storage tank (4) is in airflow communication with the dryer (3) and is configured to receive the dried airflow after being filtered by the dryer (3); At least one air-using unit (5) is in airflow communication with the non-purified air storage tank (2) and the instrument air storage tank (4), respectively, and the air-using unit (5) is configured to receive the airflow output from the non-purified air storage tank (2) and / or the instrument air storage tank (4); characterized in that it also includes: An air supply pipe network (6), comprising a first main road (61), a second main road (62), a third main road (63), a fourth main road (64), at least one first branch road (65) and at least one second branch road (66); the first main road (61) and the second main road (62) are arranged in parallel, and one end of the first main road (61) and the second main road (62) are connected to the non-purified air storage tank (2), and the other end is connected to the first branch road (65); the third main road (63) and the fourth main road (64) are arranged in parallel, and one end of the third main road (63) and the fourth main road (64) are connected to the instrument air storage tank (4), and the other end is connected to the second branch road (66); the first branch road (65) and the second branch road (66) are respectively connected to the air flow of the air consumption unit (5); The gas-using unit (5), the first branch (65), and the second branch (66) are respectively provided in a plurality and the number of the three is equal, and a single gas-using unit (5) is provided with one first branch (65) and one second branch (66); The first branch (65) and the second branch (66) are respectively provided with regulating valves (67), and the regulating valves (67) are configured to adjust the air flow of the corresponding branch or close the branch; The air compressor unit (1) has an intake port (11) for inhaling air from the external environment and an output port (12) for outputting compressed air to the outside. The non-purified air storage tank (2) has a first air inlet (21), a first air outlet (22), a second air outlet (23) and an exhaust port (24). The dryer (3) has a first air inlet (31) and a first air outlet (32). The instrument air storage tank (4) has a second air inlet (41), a third air outlet (42) and a fourth air outlet (43). The output port (12) of the air compressor unit (1) is connected to the first air inlet (21) of the non-purified air storage tank (2). One end of the first main path (61) is connected to the first air outlet (22) of the non-purified air storage tank (2), and the other end is connected to the first branch path (65). One end of the second main path (62) is connected to the second air outlet (23) of the non-purified air storage tank (2), and the other end is connected to the first branch path (65); the air outlet (24) of the non-purified air storage tank (2) is connected to the first air inlet (31) of the dryer (3); the first air outlet (32) of the dryer (3) is connected to the second air inlet (41) of the instrument air storage tank (4); one end of the third main path (63) is connected to the third air outlet (42) of the instrument air storage tank (4), and the other end is connected to the second branch path (66); one end of the fourth main path (64) is connected to the fourth air outlet (43) of the instrument air storage tank (4), and the other end is connected to the second branch path (66); the overall shape of the air supply pipe network (6) is annular.

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