Nitrogen and compressed air integrated adjusting device

Abstract

The utility model relates to gas regulation, in particular to a nitrogen and compressed air integrated regulating device. And the nitrogen system and the compressed air system are complementarily used, so that the use efficiency of the compressor can be improved, and the equipment investment cost can be reduced. Comprising a nitrogen supply system and a compressed air supply system. The nitrogen supply system comprises at least two nitrogen compressors, all the nitrogen compressors are connected to a nitrogen main gas pipe in parallel, and at least two nitrogen storage tanks are arranged on the nitrogen main gas pipe in parallel. The compressed air supply system comprises at least two air compressors, all the air compressors are connected to a main air pipe in parallel, and at least two air storage tanks are arranged on the main air pipe in parallel. Each user is provided with two air pipes, one air pipe is used for being communicated with a nitrogen main air outlet pipe, and the other air pipe is used for being communicated with an air main air outlet pipe so as to achieve communication with a nitrogen supply system and a compressed air supply system.

Description

Technical Field

[0001] The utility model relates to gas regulation, in particular to an integrated regulation device for nitrogen and compressed air. Background Art

[0002] In the metallurgical industry, nitrogen and compressed air, as indispensable power gases, are almost involved in all production processes. Whether it is used to accelerate carbon absorption in metals, prevent steel cooling during the oxidation process, or applied to the annealing process to avoid exothermic reactions, the application scenarios of these two gases are extremely extensive. It is worth noting that many production processes have the flexibility to use either nitrogen or compressed air, that is, the two can be used interchangeably without affecting the quality and efficiency of the process. Traditionally, the nitrogen system and the compressed air system operate independently of each other without direct connection. This separate management method means that each system must independently adjust the working state of the compression equipment according to its own supply and demand situation. In order to ensure stable satisfaction of the needs of each process, the common practice is to increase the corresponding number of compressors to ensure sufficient gas supply and necessary pressure levels.

[0003] However, this method often leads to the problem of mismatch between supply capacity and actual demand. To solve this challenge, operators can only rely on end-users to adjust the gas consumption by themselves and strive to achieve the supply-demand balance of the system, so as to maximize the capacity of the compression equipment. Nevertheless, such a solution still has limitations, especially when facing dynamically changing production demands, it appears to be not flexible enough. In fact, in production practice, in order to ensure full response to various possible process demands, the gas supply capacity of the compressor is often designed to exceed the actual need, which not only increases the initial investment cost but also may lead to waste of energy and resources. Therefore, there is an urgent need to introduce an integrated regulation device that can regulate the supply of nitrogen and compressed air, ensure the effective utilization of resources, reduce unnecessary energy consumption, and ultimately achieve the goal of energy conservation and emission reduction. Summary of the Invention

[0004] The utility model aims at the defects existing in the prior art and provides an integrated regulation device for nitrogen and compressed air. By realizing complementary use between the nitrogen system and the compressed air system, not only can the use efficiency of the compressor be improved, but also the equipment investment cost can be reduced. For those processes that can use either nitrogen or compressed air, a dual gas source (i.e., with both nitrogen and compressed air supply) is laid, and flexible switching between the two can be achieved. By calculating to determine the gas source for switching one or more processes, a better supply-demand balance can be achieved between the two systems, thereby saving energy.

[0005] To achieve the above object, the utility model adopts the following technical solution. An integrated regulating device for nitrogen and compressed air includes a nitrogen gas supply system and a compressed air supply system.

[0006] The nitrogen gas supply system includes at least two nitrogen compressors, each nitrogen compressor is connected in parallel to the nitrogen main pipe, and at least two nitrogen storage tanks are connected in parallel on the nitrogen main pipe, and the number of nitrogen storage tanks is equal to the number of nitrogen compressors; each nitrogen storage tank is provided with an air outlet, and the air outlet is butted with the nitrogen main outlet pipe through a pipeline.

[0007] The compressed air supply system includes at least two air compressors, each air compressor is connected in parallel to the air main pipe, and at least two air storage tanks are connected in parallel on the air main pipe, and the number of air storage tanks is equal to the number of air compressors; each air storage tank is provided with an air outlet, and the air outlet is butted with the air main outlet pipe through a pipeline.

[0008] Each user is provided with a dual-channel gas pipe. One channel of the gas pipe is used to communicate with the nitrogen main outlet pipe, and the other channel of the gas pipe is used to communicate with the air main outlet pipe to achieve connection with the nitrogen gas supply system and the compressed air supply system.

[0009] Further, each nitrogen compressor corresponds to a nitrogen storage tank, each air compressor corresponds to an air storage tank, the volume of the nitrogen compressor matches the total gas supply of the nitrogen storage tanks during operation, and the volume of the air compressor matches the total gas supply of the air storage tanks during operation, ensuring a stable supply of compressed gas when the gas demand fluctuates.

[0010] Further, the nitrogen storage tank is connected to the nitrogen main pipe through an input valve, and the nitrogen storage tank is connected to the nitrogen main outlet pipe through an output valve.

[0011] The air storage tank is connected to the air main pipe through an input valve, and the air storage tank is connected to the air main outlet pipe through an output valve.

[0012] Further, in each of the dual-channel gas pipes of each user, a switching valve is provided on each gas pipe; among them, the switching valve on the gas pipe used to communicate with the nitrogen main outlet pipe is used to switch the connection with the nitrogen main outlet pipe, and the switching valve used to communicate with the air main outlet pipe is used to switch the connection with the air main outlet pipe.

[0013] Further, the output end of each nitrogen compressor is connected to the nitrogen main pipe through its respective output valve, and is used to start or stop the nitrogen compressor as needed to adjust the nitrogen gas supply.

[0014] The output end of each air compressor is connected to the air main pipe through its respective output valve, and is used to start or stop the air compressor as needed to adjust the air supply.

[0015] The beneficial effects of the utility model compared with the prior art.

[0016] The integrated regulating device for nitrogen and compressed air of the present utility model is equipped with corresponding storage tanks (i.e., gas storage tanks) for nitrogen compressors and air compressors. It can be configured with gas storage tanks of different capacities according to the number of compressors started in their respective systems, enabling the exhaust volume of the total number of compressors started in real time to be balanced with the capacity of the gas storage tank, and effectively ensuring the stability of the air pressure during gas transmission.

[0017] The integrated regulating device for nitrogen and compressed air of the present utility model is configured with 2 sets of gas supply systems for different users to perform peak shaving control according to different gas consumption of customers. Each user can use the maximum gas supply peak volume of the two systems, which can effectively improve the reasonable complementary use of nitrogen compressors and air compressors and effectively reduce the number of compressors put into use. Brief Description of the Drawings

[0018] The present utility model will be further described below in conjunction with the drawings and specific embodiments. The protection scope of the present utility model is not limited only to the description of the following content.

[0019] Figure 1 It is a schematic diagram of an integrated regulating device for nitrogen and compressed air.

[0020] Figure 2 It is a three-dimensional view of an integrated regulating device for nitrogen and compressed air Figure 1 .

[0021] Figure 3 It is a three-dimensional view of an integrated regulating device for nitrogen and compressed air Figure 2 .

[0022] In the figure, 1. No. 1 nitrogen compressor; 2. No. 2 nitrogen compressor; 3. No. 3 nitrogen compressor; 4. No. 4 nitrogen compressor; 5. No. 5 nitrogen compressor; 6. No. 1 nitrogen storage tank; 7. No. 2 nitrogen storage tank; 8. No. 3 nitrogen storage tank; 9. No. 4 nitrogen storage tank; 10. No. 5 nitrogen storage tank; 11. No. 1 air compressor; 12. No. 2 air compressor; 13. No. 3 air compressor; 14. No. 4 air compressor; 15. No. 5 air compressor; 16. No. 1 air storage tank; 17. No. 2 air storage tank; 18. No. 3 air storage tank; 19. No. 4 air storage tank; 20. No. 5 air storage tank; 21. Air total outlet pipe; 22. Nitrogen total outlet pipe; 211. Air main pipe; 222. Nitrogen main pipe; 23. Switch valve;

[0023] 101. No. 1 nitrogen machine output valve; 201. No. 2 nitrogen machine output valve; 301. No. 3 nitrogen machine output valve; 401. No. 4 nitrogen machine output valve; 501. No. 5 nitrogen machine output valve;

[0024] 601. No. 1 nitrogen tank input valve; 701. No. 2 nitrogen tank input valve; 801. No. 3 nitrogen tank input valve; 901. No. 4 nitrogen tank input valve; 1001. No. 5 nitrogen tank input valve;

[0025] 602, Nitrogen tank 1 output valve; 702, Nitrogen tank 2 output valve; 802, Nitrogen tank 3 output valve; 902, Nitrogen tank 4 output valve; 1002, Nitrogen tank 5 output valve;

[0026] 1101, Air compressor 1 output valve; 1201, Air compressor 2 output valve; 1301, Air compressor 3 output valve; 1401, Air compressor 4 output valve; 1501, Air compressor 5 output valve;

[0027] 1601, Air tank 1 input valve; 1701, Air tank 2 input valve; 1801, Air tank 3 input valve; 1901, Air tank 4 input valve; 2001, Air tank 5 input valve;

[0028] 1602, Air tank 1 output valve; 1702, Air tank 2 output valve; 1802, Air tank 3 output valve; 1902, Air tank 4 output valve; 2002, Air tank 5 output valve. Detailed implementation mode

[0029] To better understand the technical solution of the present invention, the following specific implementation schemes are provided; and the following schemes are only for illustration.

[0030] As Figures 1-3 shown, the integrated regulation device for nitrogen and compressed air of the present invention includes a nitrogen gas supply system and a compressed air supply system.

[0031] The nitrogen gas supply system includes at least 2 nitrogen compressors, each nitrogen compressor is connected in parallel to the nitrogen gas main pipe 222, and at least 2 nitrogen storage tanks are connected in parallel on the nitrogen gas main pipe 222, and the number of nitrogen storage tanks is equal to the number of nitrogen compressors; each nitrogen storage tank is provided with an air outlet, and the air outlet is connected to the nitrogen gas main outlet pipe 22 through a pipeline. The compressed air supply system includes at least 2 air compressors, each air compressor is connected in parallel to the air main pipe 211, and at least 2 air storage tanks are connected in parallel on the air main pipe 211, and the number of air storage tanks is equal to the number of air compressors; each air storage tank is provided with an air outlet, and the air outlet is connected to the air main outlet pipe 21 through a pipeline. Each user is provided with a dual-channel gas pipe, one of which is used to communicate with the nitrogen gas main outlet pipe 22, and the other is used to communicate with the air main outlet pipe 21 to realize the connection with the nitrogen gas supply system and the compressed air supply system.

[0032] Each nitrogen compressor corresponds to a nitrogen storage tank, each air compressor corresponds to an air storage tank, the volume of the nitrogen compressor is matched with the total gas supply of the nitrogen storage tanks during operation, and the volume of the air compressor is matched with the total gas supply of the air storage tanks during operation, ensuring a stable supply of compressed gas when the gas demand fluctuates.

[0033] Example 1. The nitrogen gas supply system includes five nitrogen compressors, namely: No. 1 nitrogen compressor 1, No. 2 nitrogen compressor 2, No. 3 nitrogen compressor 3, No. 4 nitrogen compressor 4, and No. 5 nitrogen compressor 5. There are five nitrogen storage tanks, namely: No. 1 nitrogen storage tank 6, No. 2 nitrogen storage tank 7, No. 3 nitrogen storage tank 8, No. 4 nitrogen storage tank 9, and No. 5 nitrogen storage tank 10. The compressed air supply system includes five air compressors, No. 1 air compressor 11, No. 2 air compressor 12, No. 3 air compressor 13, No. 4 air compressor 14, and No. 5 air compressor 15; there are five air storage tanks, No. 1 air storage tank 16, No. 2 air storage tank 17, No. 3 air storage tank 18, No. 4 air storage tank 19, and No. 5 air storage tank 20, an air main outlet pipe 21, and a nitrogen main outlet pipe 22.

[0034] Example 2. The nitrogen storage tanks (No. 1 nitrogen storage tank 6 - No. 5 nitrogen storage tank 10) are connected to the nitrogen main pipe 222 through input valves (No. 1 nitrogen tank input valve 601 - No. 5 nitrogen tank input valve 1001), and the nitrogen storage tanks are connected to the nitrogen main outlet pipe 22 through output valves (No. 1 nitrogen tank output valve 602 - No. 5 nitrogen tank output valve 1002). For example, the input valve of No. 1 nitrogen storage tank 6 is No. 1 nitrogen tank input valve 601, the output valve of No. 1 nitrogen storage tank 6 is No. 1 nitrogen tank output valve 602, and No. 1 nitrogen storage tank 6 is connected to the nitrogen main pipe 222 through No. 1 nitrogen tank input valve 601 and connected to the nitrogen main storage tank 22 through No. 1 nitrogen tank output valve 602.

[0035] The air storage tanks (No. 1 air storage tank 16 - No. 5 air storage tank 20) are connected to the air main pipe 211 through input valves (No. 1 air tank input valve 1601 - No. 5 air tank input valve 2001), and the air storage tanks are connected to the air main outlet pipe 21 through output valves (No. 1 air tank output valve 1602 - No. 5 air tank output valve 2002). For example, No. 1 air storage tank 16 is connected to the air main pipe 211 through No. 1 air tank input valve 1601 and connected to the air main outlet pipe 21 through No. 1 air tank output valve 1602.

[0036] Example 3. In the dual - path gas pipes of each user, a switch valve 23 is provided on each path of the gas pipe; among them, the switch valve 23 on the gas pipe connected to the nitrogen main outlet pipe 22 is used to switch the connection with the nitrogen main outlet pipe 22, and the switch valve 23 on the gas pipe connected to the air main outlet pipe 21 is used to switch the connection with the air main outlet pipe 21.

[0037] Preferably, the output end of each nitrogen compressor (Nitrogen Compressor No. 1 to Nitrogen Compressor No. 5) is connected to the main nitrogen pipe 222 through its respective output valve (Output Valve of Nitrogen Compressor No. 1 to Output Valve of Nitrogen Compressor No. 501), for starting or stopping the nitrogen compressor as needed to adjust the nitrogen supply; the output end of each air compressor (Air Compressor No. 11 to Air Compressor No. 15) is connected to the main air pipe 211 through its respective output valve (Output Valve of Air Compressor No. 11 to Output Valve of Air Compressor No. 1501), for starting or stopping the air compressor as needed to adjust the air supply.

[0038] Technical key points description:

[0039] 1. Gas storage tanks corresponding to the number of compressors are provided on the main pipelines of the nitrogen compressors and air compressors. The purpose is to match the number of actually operating compressors with the capacity of the corresponding gas storage tanks, which can achieve the purpose of stable gas supply, ensuring that the user's gas-using equipment can continuously obtain a stable gas supply. Buffer function purpose: The gas storage tank can play a buffering role, reducing the number of times the compressor starts and stops frequently, thereby extending the service life of the compressor and saving energy.

[0040] 2. The volume of the gas storage tank is matched with the total gas supply of the compressors in operation. Different volumes of gas storage tanks are switched according to the total number of operating compressors and the total gas supply to meet the gas pipeline system. The purpose is to match the total gas supply capacity of the compressors with the capacity of the corresponding gas storage tanks to ensure a stable compressed gas supply even when the gas demand fluctuates. If the gas storage tank is too small relative to the total gas supply of the compressors, it may not be able to effectively buffer the demand, resulting in unstable gas supply. Reducing the start frequency of the air compressor: A suitable gas storage tank can help reduce the start times of the air compressor.

[0041] Introduction to the working process and working principle of the present utility model:

[0042] S1. Given the total gas consumption of the user, the corresponding number of nitrogen compressors and air compressors are controlled to be started according to the user's total gas demand and gas usage type. At the same time, the gas transmission pipeline is switched to the gas storage tank with the corresponding capacity through the valve to provide stable gas supply operations for each user.

[0043] S2. Once the total user consumption changes, according to the latest gas consumption demand, control the opening or closing of the corresponding nitrogen compressors and air compressors. When the total nitrogen consumption of the user has exceeded the total supply of all nitrogen compressors, the system will judge whether all the air compressors are running at this time. If all are running, it is considered that the maximum gas supply capacity has been reached at present. If there are air compressors not participating in the operation, at this time, according to the nitrogen demand, turn on the corresponding number of air compressors as a compensation gas source to supply gas to the user (provided that the equipment using nitrogen by the user can be switched to compressed air at this time). When the total air consumption of the user has exceeded the total supply of all air compressors, the system will judge whether all the nitrogen compressors are running at this time. If all are running, it is considered that the maximum gas supply capacity has been reached at present. If there are nitrogen compressors not participating in the operation, at this time, according to the air demand, turn on the corresponding number of nitrogen compressors as a compensation gas source to supply gas to the user (provided that the equipment using air by the user can be switched to nitrogen at this time).

[0044] S3. Calculate the total nitrogen and compressed air consumption through the real-time gas consumption of the user, and then combine the operating states of the nitrogen compressors and air compressors to give the switching prompt of nitrogen or compressed air for each user, and give the results of starting and stopping the nitrogen compressors and air compressors, so as to realize the non-combination of the gas supply of the two systems and achieve the purpose of energy saving and sharing equipment.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; therefore, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope defined by the claims of the present invention.

Claims

1. An integrated regulating device for nitrogen and compressed air, characterized in that: It includes a nitrogen gas supply system and a compressed air supply system; The nitrogen gas supply system includes at least 2 nitrogen compressors. Each nitrogen compressor is connected in parallel to the nitrogen main pipe (222), and at least 2 nitrogen storage tanks are provided in parallel on the nitrogen main pipe (222), and the number of nitrogen storage tanks is equal to the number of nitrogen compressors; each nitrogen storage tank is provided with an air outlet, and the air outlet is connected to the nitrogen main outlet pipe (22) through a pipeline; The compressed air supply system includes at least 2 air compressors. Each air compressor is connected in parallel to the air main pipe (211), and at least 2 air storage tanks are provided in parallel on the air main pipe (211), and the number of air storage tanks is equal to the number of air compressors; each air storage tank is provided with an air outlet, and the air outlet is connected to the air main outlet pipe (21) through a pipeline; Each user is provided with a dual-channel gas pipe. One channel of the gas pipe is used to communicate with the nitrogen main outlet pipe (22), and the other channel of the gas pipe is used to communicate with the air main outlet pipe (21) to achieve connection with the nitrogen gas supply system and the compressed air supply system.

2. The integrated adjustment device according to claim 1, characterized in that: Each nitrogen compressor corresponds to a nitrogen storage tank, and each air compressor corresponds to an air storage tank. The volume of the nitrogen compressor is matched with the total gas supply of the nitrogen storage tanks during operation, and the volume of the air compressor is matched with the total gas supply of the air storage tanks during operation to ensure a stable supply of compressed gas when the gas demand fluctuates.

3. The integrated adjustment device according to claim 1 or 2, characterized in that: The nitrogen storage tank is connected to the nitrogen main pipe (222) through an input valve, and the nitrogen storage tank is connected to the nitrogen main outlet pipe (22) through an output valve; The air storage tank is connected to the air main pipe (211) through an input valve, and the air storage tank is connected to the air main outlet pipe (21) through an output valve.

4. The integrated adjustment device according to any one of claims 1 to 2, characterized in that: In each of the dual-channel gas pipes of each user, a switching valve (23) is provided on each channel of the gas pipe; among them, the switching valve on the gas pipe used to communicate with the nitrogen main outlet pipe (22) is used to switch the connection with the nitrogen main outlet pipe (22), and the switching valve (23) used to communicate with the air main outlet pipe (21) is used to switch the connection with the air main outlet pipe (21).

5. The integrated adjustment device according to claim 1, wherein: The output end of each nitrogen compressor is connected to the nitrogen main pipe (222) through its respective output valve, and is used to start or stop the nitrogen compressor as needed to adjust the nitrogen gas supply; The output end of each air compressor is connected to the air main pipe (211) through its respective output valve, and is used to start or stop the air compressor as needed to adjust the air supply.

Images