CN117869791A - System and method for realizing low-pressure step feeding in nitrogen - Google Patents

Abstract

A system and a method for realizing low-pressure step feeding in nitrogen relate to the field of gas feeding. Solves the problem that the existing nitrogen supply system can not effectively separate supply. The system comprises: a first medium pressure nitrogen press, a second medium pressure nitrogen press, a third medium pressure nitrogen press, a fourth low pressure nitrogen press, a first spherical tank, a second spherical tank, a spherical tank inlet valve, a spherical tank medium pressure inlet valve, a spherical tank low pressure inlet valve; the first medium-pressure nitrogen compressor is connected with an inlet valve of the spherical tank; the second medium-pressure nitrogen compressor is connected with a medium-pressure inlet valve of the spherical tank; the third medium-pressure nitrogen compressor is connected with a medium-pressure inlet valve of the spherical tank; the fourth low-pressure nitrogen compressor is connected with a ball tank low-pressure inlet valve; the first spherical tank inlet valve receives nitrogen of the first medium-pressure nitrogen compressor; the second spherical tank receives nitrogen of the fourth low-pressure nitrogen compressor; the spherical tank inlet valve is connected with a first medium-pressure nitrogen compressor. Is applied to the field of nitrogen supply.

Description

System and method for realizing low-pressure step feeding in nitrogen

Technical Field

The invention relates to the field of gas supply, in particular to a step supply system for realizing low pressure in nitrogen.

Background

Nitrogen is an important industrial gas and is widely used in many fields. Different applications may have different requirements on the purity, pressure and flow of nitrogen. Therefore, the nitrogen supply system needs to meet these various requirements to ensure smooth production.

However, if nitrogen is not available separately, these different requirements cannot be met. In some cases, a large supply of nitrogen may be required, while in other cases only a small supply is required. Failure to divide as needed can result in inefficiency in the system, increasing operating costs. In addition, if nitrogen is still supplied when not needed, this can lead to waste of nitrogen, which has a negative impact on costs and the environment.

Further, if the nitrogen supply system is always in a high load operation state, the service life of equipment in the system is shortened, and the maintenance cost is increased. Furthermore, since the existing nitrogen supply system is designed without considering the differences of different applications, it is impossible to perform effective distribution. And the existing nitrogen supply system designs too many pipelines and valves, and once the pipelines and the valves are in fault, such as leakage, blockage or valve failure, the nitrogen cannot be properly distributed.

In addition, existing nitrogen supply systems are too old to meet the needs of current applications. This requires a system upgrade or replacement. Therefore, in order to solve these problems, it is required to design a new nitrogen gas supply system which can perform effective distribution according to the needs of different applications and reduce the waste of nitrogen gas and the maintenance cost of equipment.

Disclosure of Invention

Aiming at the problem that the effective sub-supply cannot be carried out due to the fact that the design of the existing nitrogen supply system does not take the difference of different applications into consideration, the invention provides a system for realizing low-pressure step supply in nitrogen, which comprises the following specific steps:

a system for achieving low pressure step feed in nitrogen, the system comprising:

a first medium pressure nitrogen press, a second medium pressure nitrogen press, a third medium pressure nitrogen press, a fourth low pressure nitrogen press, a first spherical tank, a second spherical tank, a spherical tank inlet valve, a spherical tank medium pressure inlet valve, a spherical tank low pressure inlet valve;

the output end of the first medium-pressure nitrogen compressor is connected to the inlet valve of the spherical tank;

the output end of the second medium-pressure nitrogen compressor is connected to a medium-pressure inlet valve of the spherical tank;

the output end of the third medium-pressure nitrogen compressor is connected to a medium-pressure inlet valve of the spherical tank;

the output end of the fourth low-pressure nitrogen compressor is connected to a spherical tank low-pressure inlet valve;

the first spherical tank inlet valve receives nitrogen of the first medium-pressure nitrogen compressor;

the second spherical tank receives nitrogen of a fourth low-pressure nitrogen compressor through a spherical tank low-pressure inlet valve;

the spherical tank inlet valve is connected with a first medium-pressure nitrogen compressor and used for conveying gas to the first spherical tank;

the spherical tank medium pressure inlet valve is connected with the second medium pressure nitrogen press and the third medium pressure nitrogen press and is used for conveying gas to the first spherical tank;

the spherical tank low pressure inlet valve is connected with a fourth low pressure nitrogen compressor to convey gas to the second spherical tank.

Further, there is provided a preferred form, the system further comprising a medium pressure nitrogen regulator valve; the medium-pressure nitrogen regulating valve is used for regulating the pressure of the medium-pressure nitrogen in the first spherical tank.

Further, there is provided a preferred form, the system further comprising a first low pressure nitrogen regulator valve; the first low-pressure nitrogen regulating valve is used for regulating the pressure of the low-pressure nitrogen of the second spherical tank.

Further, there is provided a preferred form, the system further comprising a second low pressure nitrogen regulator valve; the second low-pressure nitrogen regulating valve is used for regulating the pressure of the low-pressure nitrogen of the second spherical tank.

Further, there is also provided a preferred mode, the first medium pressure nitrogen compressor including a compressor, an electric motor, a cooling system, a control system and an exhaust duct;

the compressor is used for sucking in nitrogen in the atmosphere and compressing the nitrogen to a medium pressure level;

the motor is used for providing power for the compressor;

the cooling system is used for reducing the temperature of the compressor;

the control system is used for monitoring and adjusting the operation of the compressor;

the exhaust system is used to deliver compressed nitrogen to the spherical tank inlet valve.

Further, there is provided a preferred mode, wherein the compressor is a centrifugal compressor.

Further, there is provided a preferred mode, the system further comprises a filter dryer, and the filter dryer is installed on the air outlet pipeline of the medium pressure nitrogen regulating valve and the first low pressure nitrogen regulating valve.

Based on the same inventive concept, the invention also provides a method for realizing low-pressure step feeding in nitrogen, wherein the method is realized based on the system, and the method comprises the following steps: the nitrogen is supplied at low pressure and the nitrogen is not supplied at low pressure.

Further, there is also provided a preferred mode, wherein the low pressure sub-supply in nitrogen comprises:

operating a first medium pressure nitrogen compressor, a second medium pressure nitrogen compressor and a fourth low pressure nitrogen compressor; stopping the third medium-pressure nitrogen compressor;

and closing a spherical tank medium-pressure inlet valve, opening a spherical tank inlet valve and a spherical tank low-pressure inlet valve, wherein medium-pressure nitrogen and low-pressure nitrogen independently operate at the moment, the medium-pressure nitrogen is supplied by a medium-pressure nitrogen regulating valve, and the low-pressure nitrogen is supplied by a second low-pressure nitrogen regulating valve.

Further, a preferred mode is also provided, the method further comprises low-pressure non-split supply in nitrogen, specifically:

and operating a third medium-pressure nitrogen press, stopping the first medium-pressure nitrogen press, the second medium-pressure nitrogen press and the fourth low-pressure nitrogen press, opening a spherical tank medium-pressure inlet valve and a spherical tank inlet valve, closing a spherical tank low-pressure inlet valve, feeding medium-pressure nitrogen by a pressure nitrogen regulating valve, and feeding low-pressure nitrogen by a first low-pressure nitrogen regulating valve.

The invention has the advantages that:

the invention solves the problem that the design of the existing nitrogen supply system does not consider the difference of different applications, so that effective separate supply cannot be performed.

According to the nitrogen medium-low pressure step feeding system, the combination of the nitrogen presses and the spherical tanks is adopted, so that the system can realize medium-low pressure step feeding according to requirements, and the nitrogen pressure requirements of different applications are met. Each press is responsible for different pressure ranges, so that the system can more effectively adjust the air supply pressure, reduce energy consumption and improve energy efficiency. The system architecture enables the selective activation and deactivation of different presses under different conditions, thereby providing greater flexibility and controllability. Because the spherical tank is used for storing nitrogen, the system can quickly respond when needed, stable nitrogen supply is provided, the influence of start and stop of the press on gas supply is reduced, and the pressure fluctuation of gas in the system can be slowed down through a layered gas supply structure, so that the stability is improved and the abrasion of equipment is reduced.

The first medium-pressure nitrogen press, the second medium-pressure nitrogen press, the third medium-pressure nitrogen press and the fourth low-pressure nitrogen press for realizing the nitrogen medium-low pressure step feeding system are responsible for compressing nitrogen in different pressure ranges. Such a multi-stage compression structure can better accommodate the needs of different applications. The first spherical tank and the second spherical tank respectively receive nitrogen with different pressure levels. The presence of the spherical tanks helps to smooth the gas supply, reducing gas pressure fluctuations within the system. The spherical tank inlet valve 7, spherical tank medium pressure inlet valve 8 and spherical tank low pressure inlet valve 9 act as regulating valves for controlling the flow of nitrogen into the spherical tank and ensuring proper stepped supply under different conditions.

The invention discloses a low-pressure ladder feeding system in nitrogen, which is applied to the field of nitrogen feeding.

Drawings

Fig. 1 is a schematic diagram of a step feeding system for realizing low pressure in nitrogen according to an embodiment.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments.

Embodiment one, this embodiment will be described with reference to fig. 1. The embodiment of the system for realizing low-pressure step feeding in nitrogen gas comprises:

a first medium pressure nitrogen compressor 1, a second medium pressure nitrogen compressor 2, a third medium pressure nitrogen compressor 3, a fourth low pressure nitrogen compressor 4, a first spherical tank 5, a second spherical tank 6, a spherical tank inlet valve 7, a spherical tank medium pressure inlet valve 8, and a spherical tank low pressure inlet valve 9;

the output end of the first medium-pressure nitrogen compressor 1 is connected to a spherical tank inlet valve 7;

the output end of the second medium-pressure nitrogen compressor 2 is connected to a spherical tank medium-pressure inlet valve 8;

the output end of the third medium-pressure nitrogen compressor 3 is connected to a spherical tank medium-pressure inlet valve 8;

the output end of the fourth low-pressure nitrogen compressor 4 is connected to a spherical tank low-pressure inlet valve 9;

the first spherical tank 5 spherical tank inlet valve 7 receives nitrogen of the first medium-pressure nitrogen compressor;

the second spherical tank 6 receives nitrogen of a fourth low-pressure nitrogen compressor through a spherical tank low-pressure inlet valve 9;

the spherical tank inlet valve 7 is connected with the first medium-pressure nitrogen compressor 1 and is used for conveying gas to the first spherical tank 5;

the spherical tank medium pressure inlet valve 8 is connected with the second medium pressure nitrogen press 2 and the third medium pressure nitrogen press 3 and is used for conveying gas to the first spherical tank 5;

the spherical tank low pressure inlet valve 9 is connected with a fourth low pressure nitrogen compressor 4 to deliver gas to the second spherical tank 6.

According to the embodiment, the combination of the nitrogen presses and the spherical tanks is adopted, and the system can realize medium-low pressure step feeding according to the needs so as to meet the nitrogen pressure requirements of different applications. Each press is responsible for different pressure ranges, so that the system can more effectively adjust the air supply pressure, reduce energy consumption and improve energy efficiency. The system architecture enables the selective activation and deactivation of different presses under different conditions, thereby providing greater flexibility and controllability. Because the spherical tank is used for storing nitrogen, the system can quickly respond when needed, stable nitrogen supply is provided, the influence of start and stop of the press on gas supply is reduced, and the pressure fluctuation of gas in the system can be slowed down through a layered gas supply structure, so that the stability is improved and the abrasion of equipment is reduced.

The first, second, third and fourth medium pressure nitrogen presses of the system in this embodiment are responsible for nitrogen compression in different pressure ranges. Such a multi-stage compression structure can better accommodate the needs of different applications. The first spherical tank and the second spherical tank respectively receive nitrogen with different pressure levels. The presence of the spherical tanks helps to smooth the gas supply, reducing gas pressure fluctuations within the system. The spherical tank inlet valve 7, spherical tank medium pressure inlet valve 8 and spherical tank low pressure inlet valve 9 act as regulating valves for controlling the flow of nitrogen into the spherical tank and ensuring proper stepped supply under different conditions.

Compared with the traditional nitrogen gas supply system, the nitrogen gas medium-low pressure step supply system of the embodiment has the advantage that the flexibility and the energy efficiency of the system are remarkably improved. Through the gas compression and the storage structure of adaptability, the system can better adapt to the gas pressure demands of different applications, reduces the energy waste, and improves the stability and the controllability of the system. The introduction of this structure is an innovation in conventional nitrogen supply systems and is expected to bring about a more economical and reliable gas supply solution in the fields of industry, laboratory, etc.

In the second embodiment, the low-pressure step feeding system in nitrogen is further defined, and the system further comprises a medium-pressure nitrogen regulating valve 10; the medium-pressure nitrogen regulating valve 10 is used for regulating the pressure of the medium-pressure nitrogen in the first spherical tank 5.

The introduction of the medium pressure nitrogen regulator valve 10 in this embodiment enables the system to more precisely adjust the nitrogen pressure in the first spherical tank 5 to suit the specific application requirements. This helps to ensure stability and controllability of the gas supply. The existence of the regulating valve increases the flexibility of the system, and operators can adjust the pressure of medium-pressure nitrogen in real time according to specific requirements, so as to meet the requirements of different processes or experiments. By precisely controlling the pressure of medium-pressure nitrogen, the quality of the gas can be optimized, and the gas can be ensured to meet the requirements of specific applications, especially in the occasions with higher requirements on the purity and stability of the gas.

The medium-pressure nitrogen regulating valve 10 of the present embodiment is located on the medium-pressure nitrogen pipe of the first spherical tank 5, and its function is to adjust the pressure level of nitrogen as needed. By adjusting the opening of the valve, the speed of the gas flowing through the valve can be controlled, thereby adjusting the pressure of the gas. The medium pressure nitrogen regulating valve 10 is typically connected to a pressure sensor and control system for real-time feedback control. By monitoring the nitrogen pressure in the first spherical tank 5 and adjusting the opening of the valve accordingly, the system can quickly respond to pressure changes, maintaining a stable supply pressure. This step of introducing the medium pressure nitrogen regulator valve 10 significantly enhances the precision and controllability of the system. Through the pressure of the medium-pressure nitrogen gas in real time adjustment, the system can better adapt to the gas requirements under different working conditions, and the quantitative and quality control level of nitrogen gas supply is improved. The application of the regulating valve enables the system to be more intelligent, provides a greater degree of freedom of operation for users, and improves the overall performance of the gas supply system.

In the third embodiment, the low-pressure step feeding system in nitrogen is further limited in the second embodiment, and the system further comprises a first low-pressure nitrogen regulating valve 11; the first low-pressure nitrogen regulating valve 11 is used for regulating the low-pressure introduction of the second spherical tank 6 into the first low-pressure nitrogen regulating valve 11, so that the system can accurately regulate the low-pressure nitrogen in the second spherical tank 6. This helps to ensure that a stable gas pressure is provided in applications requiring low pressure nitrogen.

In this embodiment, by adjusting the low-pressure nitrogen pressure of the second spherical tank 6, the system has better adaptability, and can meet the specific requirements of different equipment or laboratories, thereby ensuring the flexibility of nitrogen supply. The first low-pressure nitrogen regulating valve 11 allows fine control of low-pressure nitrogen, is suitable for occasions with higher requirements on the accuracy of gas pressure, and improves the performance of a gas supply system.

The first low-pressure nitrogen gas regulating valve 11 of the present embodiment is located on the low-pressure nitrogen gas pipe of the second spherical tank 6, and functions to regulate the pressure of nitrogen gas by adjusting the opening degree of the valve. The flow rate of the gas can be controlled by adjusting the valve, so that the pressure of the low-pressure nitrogen can be adjusted and controlled. In practical application, the first low-pressure nitrogen regulating valve 11 is connected with a pressure sensor and a feedback control system. This allows the system to monitor the real time pressure of the low pressure nitrogen in the second spherical tank 6 and adjust the opening of the regulating valve according to the feedback information to maintain a stable low pressure gas supply.

This embodiment achieves finer and controllable regulation of the low pressure nitrogen by introducing a first low pressure nitrogen regulator valve 11. The addition of the regulating valve enables the system to be more flexible, and can adapt to special requirements of different occasions on low-pressure nitrogen pressure, so that the overall performance of the gas supply system is improved. The adjustability and precision of the system are further enhanced and the user can better meet the gas pressure requirements of a particular experiment or application. Pressure of nitrogen.

Embodiment four, this embodiment is a further limitation of the low-pressure step feeding system in implementing nitrogen according to the first embodiment, and the system further includes a second low-pressure nitrogen adjusting valve 12; the second low-pressure nitrogen regulating valve 12 is used for regulating the pressure of the low-pressure nitrogen of the second spherical tank 6.

The present embodiment incorporates a second low pressure nitrogen regulator valve 12 to provide the system with a dual regulation function. This means that there are two independent regulating valves in the system for regulating the pressure of the nitrogen, respectively, which increases a more flexible and accurate control of the gas pressure. The second low-pressure nitrogen regulating valve 12 is dedicated to regulating the pressure of the low-pressure nitrogen of the second spherical tank 6. The subdivision design allows the system to more finely adjust and control the pressure of the nitrogen, and is suitable for application scenes with higher requirements on the accuracy of the pressure of the gas. Because the second low-pressure nitrogen regulating valve 12 is introduced into the system, even if one regulating valve fails, the system can still regulate the nitrogen pressure through the other regulating valve, so that the reliability of the system is improved.

The design of the second low pressure nitrogen regulator valve 12 in this embodiment allows the system to make a double regulation of the nitrogen supply. The second low-pressure nitrogen regulating valve 12 is located on the low-pressure nitrogen pipeline of the second spherical tank 6, and the pressure of the low-pressure nitrogen in the second spherical tank 6 can be accurately regulated by adjusting the opening degree of the valve. The second low pressure nitrogen regulating valve 12 is independent of the first low pressure nitrogen regulating valve 11, which means that the operator can adjust both regulating valves separately, enabling a more flexible and accurate nitrogen pressure control. This independently adjustable design provides greater flexibility for different experiments or applications.

The introduction of the second low pressure nitrogen regulator valve 12 in this embodiment significantly enhances the flexibility and precision of the system. The system has finer nitrogen pressure control capability and can adapt to wider experimental and application requirements. The dual regulation design improves the reliability of the system, ensuring that the system is able to provide a stable nitrogen supply even if one regulator valve is problematic. This advancement has made the low pressure step feed system in nitrogen more suitable for a variety of laboratory and industrial applications.

In a fifth embodiment, the present embodiment is further defined by implementing a low-pressure step feeding system in nitrogen according to the first embodiment, where the first medium-pressure nitrogen compressor 1 includes a compressor, a motor, a cooling system, a control system, and an exhaust pipe;

the compressor is used for sucking in nitrogen in the atmosphere and compressing the nitrogen to a medium pressure level;

the motor is used for providing power for the compressor;

the cooling system is used for reducing the temperature of the compressor;

the control system is used for monitoring and adjusting the operation of the compressor;

the exhaust system is used to deliver compressed nitrogen to the spherical tank inlet valve 7.

The present embodiment draws in and compresses atmospheric nitrogen to a medium pressure level through the compressor, and the system achieves efficient nitrogen compression. This ensures that the system is able to provide enough compressed nitrogen to meet the needs of subsequent experiments or applications. The motor powers the compressor, which provides a reliable source of power. The motor is typically capable of providing a constant rotational speed and power, ensuring a stable power supply to the compressor, helping to achieve a reliable nitrogen compression process. The presence of the cooling system helps to reduce the temperature of the compressor. By controlling the temperature, the system can avoid overheat, and the working efficiency and the service life of the compressor are improved. The control system monitors and regulates operation of the compressor. This ensures that the system can be intelligently adjusted under different loads and operating conditions to meet practical demands and to improve the stability and efficiency of the system. The exhaust system is responsible for delivering compressed nitrogen to the spherical tank inlet valve 7. This ensures efficient nitrogen delivery so that the nitrogen can smoothly enter the next stage supply process of the system.

In this embodiment, the compressor sucks in nitrogen in the atmosphere by a mechanism such as a piston, a screw, or the like, and then compresses it to a medium pressure level by mechanical work. This process increases the density and pressure of the nitrogen, making it suitable for laboratory or industrial applications. The motor provides power for the compressor, converts the electric energy into mechanical energy and pushes the compressor to work. The power supply in this manner is efficient and controllable and is suitable for industrial applications requiring a stable power output. The cooling system reduces the temperature of the compressor by dissipating heat or otherwise preventing overheating. This helps to maintain system stability while reducing energy waste and extending equipment life. The control system is responsible for monitoring the operating state of the compressor, and adjusting the power and other parameters of the motor through a feedback mechanism to ensure that the system can stably operate under various working conditions. The exhaust system is responsible for delivering compressed nitrogen to the spherical tank inlet valve 7. This is accomplished by piping and valves, etc., to ensure that nitrogen flows and supplies efficiently in the system.

The embodiment integrates efficient nitrogen compression, reliable motor power, temperature control, intelligent monitoring and a nitrogen transmission system. The comprehensive design improves the performance, stability and efficiency of the system, so that the low-pressure ladder supply system in nitrogen is more suitable for various application scenes.

In a sixth embodiment, the low-pressure step feeding system in nitrogen is further defined as described in the first embodiment, and the compressor is a centrifugal compressor.

In this embodiment, a centrifugal compressor is used, which generally has a high compression efficiency. It can compress nitrogen to a desired medium-low pressure level with lower energy consumption, thereby reducing energy consumption while providing a desired nitrogen pressure. Centrifugal compressors are suitable for continuous operation because their design allows for continuous compression and delivery of gas, which is very advantageous for applications requiring a continuous supply of nitrogen. Such compressors typically have fewer operating parts and therefore require relatively less maintenance and repair. This reduces maintenance costs and downtime, improving the reliability of the system. Centrifugal compressors are generally compact in design and take up little space. This makes its installation and integration into the nitrogen supply system more convenient.

The working principle of the centrifugal compressor in this embodiment is based on centrifugal force. As the gas enters the compressor, it is fed into a rotating centrifugal rotor. The rotor rotates at a high speed, causing the gas to be pulled to the center and increase in pressure due to centrifugal force. This supercharging effect causes the gas to be compressed and delivered to the outlet of the system at a higher pressure.

In the embodiment, as the efficient compression mechanism of the centrifugal compressor can reach the required nitrogen pressure with lower energy consumption, the energy consumption is reduced. The continuous operation characteristics of the centrifugal compressor ensure a stable gas output, and are suitable for scenes in which a continuous stable nitrogen supply is required. Its fewer operating parts and lower maintenance requirements improve the reliability of the system and reduce maintenance costs. The compact design makes the system easier to install and integrate, saves space and makes the system more flexible.

In summary, the centrifugal compressor provides an efficient, reliable and space-saving gas compression solution as part of a low-pressure stepped feed system in nitrogen.

Embodiment seven and this embodiment are further defined by implementing the low-pressure stepped nitrogen supply system according to the first embodiment, where the system further includes a filter dryer, and the filter dryer is installed on an air outlet pipe of the medium-pressure nitrogen adjusting valve 10 and the first low-pressure nitrogen adjusting valve 11.

The installation of the filter dryer in the embodiment can effectively remove impurities and moisture in the gas, thereby improving the purity and quality of the nitrogen. This is of great importance for applications requiring high purity nitrogen, such as laboratory, industrial production, etc. The filter dryer helps protect critical components in the system, such as the air regulating valve and other sensitive equipment, from particulate matter and moisture. This may extend the life of the device and reduce maintenance costs. The filter dryer helps to prevent clogging of pipes and equipment by removing moisture and impurities, improves the stability of the nitrogen supply system, and ensures long-time and reliable operation thereof. The use of a filter dryer helps to reduce the negative impact on the environment. Removing moisture and impurities can reduce corrosion and damage to other system components, reducing the risk of environmental pollution.

The working principle of the filter dryer mainly comprises two aspects: filtering and drying.

The filter portion typically includes a filter medium such as filter paper, mesh or other material. These materials can block solid particles in the air, such as dust, rust particles, etc., to ensure the passage of pure nitrogen.

The dry portion typically includes an adsorbent or swelling agent for adsorbing and removing moisture from the gas. This helps to prevent moisture-induced pipe corrosion, equipment damage, and in some applications, gas quality requirements.

The introduction of the filter dryer in this embodiment significantly improves the purity of the nitrogen, making it more suitable for use in situations where higher demands are placed on gas purity, such as laboratory and some industrial processes. The use of the filter dryer helps to prevent clogging of pipes and equipment, reduces the risk of failure due to impurities and moisture, and improves the reliability and stability of the system. The filter dryer helps to extend the life of critical components in the system by removing particulates and moisture that may damage the equipment, reducing maintenance costs. The filter dryer helps to reduce the negative environmental impact and reduces the risk of corrosion and contamination that may be caused during system operation.

An eighth embodiment is a method for realizing low-pressure step feeding in nitrogen according to the present embodiment, the method being implemented based on the system according to any one of the first to seventh embodiments, the method including: the nitrogen is supplied at low pressure and the nitrogen is not supplied at low pressure.

In the embodiment, by implementing the method of low-pressure separate supply and non-separate supply in the nitrogen, the system can more flexibly adjust the air supply mode according to the requirement, thereby realizing the optimization of energy efficiency. In some cases, the flexible switching between sub-supply and non-sub-supply can reduce energy consumption and improve the energy efficiency of the system. By adopting the method of separate supply and non-separate supply, the system is more adaptive and can adapt to different working conditions and requirements. This is important for widely varying application scenarios, such as laboratories, production lines, etc. By means of separate supply and non-separate supply, the system can realize fine control of nitrogen pressure, and stability and reliability of air supply are ensured. This is particularly important in areas where there is a high demand for gas supply.

In this mode, the system can distribute nitrogen to different gas consuming devices or pipes in a proportion as required. This is accomplished by corresponding gas regulating valves and flow controllers to ensure that each device obtains the desired nitrogen pressure and flow. In this mode, the system supplies nitrogen gas intensively to the entire system without subdivision. This applies to cases where the nitrogen pressure requirements are more consistent in some scenarios.

The traditional nitrogen supply system can only supply air in a fixed mode, and the air supply mode can be adjusted according to specific requirements by adopting a medium-low pressure step supply method, so that the flexibility of the system is improved. The switching between sub-supply and non-sub-supply ensures that the system can better optimize the energy efficiency according to the actual needs, avoids unnecessary energy consumption and improves the overall energy efficiency of the system. Through the separate supply mode, the system can realize the fine control of different gas utilization devices, ensure that each device can obtain the most proper nitrogen supply, and improve the controllability of the system.

In a ninth embodiment, the method for implementing a low-pressure step feeding method in nitrogen according to the eighth embodiment is further defined, wherein the low-pressure step feeding in nitrogen includes:

operating a first medium pressure nitrogen compressor 1, a second medium pressure nitrogen compressor 2 and a fourth low pressure nitrogen compressor 4; the third medium-pressure nitrogen compressor 3 is shut down;

the spherical tank medium pressure inlet valve 8 is closed, the spherical tank inlet valve 7 and the spherical tank low pressure inlet valve 9 are opened, medium pressure nitrogen and low pressure nitrogen are independently operated at this time, the medium pressure nitrogen is supplied by the medium pressure nitrogen regulating valve 10, and the low pressure nitrogen is supplied by the second low pressure nitrogen regulating valve 12.

According to the embodiment, the system can better adapt to different pressure requirements and improve energy efficiency by operating the specific nitrogen presses, such as the first medium-pressure nitrogen press, the second medium-pressure nitrogen press and the fourth low-pressure nitrogen press. And the third medium-pressure nitrogen press is stopped, so that unnecessary energy consumption is further reduced. By closing the spherical tank medium pressure inlet valve and opening the spherical tank inlet valve and the spherical tank low pressure inlet valve, independent operation of medium pressure nitrogen and low pressure nitrogen is realized. The independent operation mode enables the system to be more flexible, and the supply of medium-pressure nitrogen and low-pressure nitrogen can be independently adjusted according to the needs. Through reasonable control of each valve, the system can realize flow control of nitrogen under different pressures. The medium pressure inlet valve is closed, the low pressure inlet valve is opened, and the medium pressure and low pressure nitrogen can be respectively supplied to required equipment.

In the embodiment, the system can adjust the medium-low pressure supply of nitrogen by selectively operating the first medium-pressure nitrogen press, the second medium-pressure nitrogen press and the fourth low-pressure nitrogen press. And the third medium-pressure nitrogen press is stopped, so that unnecessary medium-pressure nitrogen is avoided, and the energy efficiency is improved. By closing the spherical tank medium pressure inlet valve and opening the spherical tank inlet valve and the spherical tank low pressure inlet valve, independent operation of medium pressure and low pressure nitrogen is realized. This is achieved by reasonably controlling the state of the valve to ensure that nitrogen flows to different channels as required. The medium-pressure nitrogen gas is controlled in flow rate by the medium-pressure nitrogen gas regulating valve 10, and the low-pressure nitrogen gas is regulated in flow rate by the second low-pressure nitrogen gas regulating valve 12. This ensures that the nitrogen pressure and flow for each channel can meet specific requirements.

According to the nitrogen compressor, the system can reduce power consumption under the condition of partial load through stopping the nitrogen compressor which is not needed, and the overall energy efficiency level is improved. By realizing independent operation of medium-pressure nitrogen and low-pressure nitrogen, the system has more flexibility and controllability, and can better adapt to different working conditions and requirements. Through reasonable control valve state and governing valve's flow, the system can realize the optimization distribution of nitrogen gas supply, ensures that each equipment obtains suitable nitrogen gas pressure and flow, has improved the operating efficiency of whole system.

The tenth embodiment is further defined that the method for implementing the step feeding of low pressure in nitrogen according to the eighth embodiment, where the method further includes no step feeding of low pressure in nitrogen, specifically:

the third medium-pressure nitrogen compressor 3 is operated, the first medium-pressure nitrogen compressor 1, the second medium-pressure nitrogen compressor 2 and the fourth low-pressure nitrogen compressor 4 are stopped, the spherical tank medium-pressure inlet valve 8 and the spherical tank inlet valve 7 are opened, the spherical tank low-pressure inlet valve 9 is closed, medium-pressure nitrogen is supplied by the pressure nitrogen regulating valve 10, and low-pressure nitrogen is supplied by the first low-pressure nitrogen regulating valve 11.

According to the embodiment, the third medium-pressure nitrogen press is only operated, other unnecessary nitrogen presses are stopped, the system can more accurately meet the requirements of medium-low-pressure nitrogen, and the energy efficiency is improved. The nitrogen is not supplied separately at medium and low pressure, and is supplied through the unified medium pressure nitrogen regulating valve 10 and the first low pressure nitrogen regulating valve 11, so that the system structure is simplified, and the running and maintenance cost of equipment is reduced. By adjusting the medium-pressure nitrogen gas regulating valve 10 and the first low-pressure nitrogen gas regulating valve 11, the system can more precisely control the pressure of the medium-pressure nitrogen gas, ensuring that the nitrogen gas supply for each channel is within a proper range.

The present embodiment provides medium pressure nitrogen by operating the third medium pressure nitrogen press 3. Medium-pressure nitrogen is supplied to the equipment requiring medium-pressure nitrogen by opening the spherical tank medium-pressure inlet valve 8 and adjusting the flow rate by the medium-pressure nitrogen adjusting valve 10. By shutting down the first medium pressure nitrogen press 1, the second medium pressure nitrogen press 2 and the fourth low pressure nitrogen press 4, the spherical tank low pressure inlet valve 9 is closed and the system stops production of low pressure nitrogen. The low-pressure nitrogen gas is supplied to the apparatus requiring low-pressure nitrogen gas by opening the spherical tank inlet valve 7 and adjusting the flow rate by the first low-pressure nitrogen gas adjusting valve 11. By controlling the states of the spherical tank medium pressure inlet valve 8, the spherical tank inlet valve 7 and the spherical tank low pressure inlet valve 9, and adjusting the medium pressure nitrogen adjusting valve 10 and the first low pressure nitrogen adjusting valve 11, independent supply of medium and low pressure nitrogen is realized.

According to the embodiment, the system reduces power consumption under the condition of partial load by stopping the unnecessary nitrogen press, and improves the overall energy efficiency level. The nitrogen gas with medium and low pressure is not supplied separately, the system structure is simplified, the number and complexity of the equipment are reduced, and the reliability and stability of the system are improved. Through adjusting valve and governing valve, the pressure of well low pressure nitrogen gas can be controlled more accurately to the system, ensures that the nitrogen gas supply accords with actual demand more.

While the preferred embodiments of the present disclosure have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the disclosure.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present disclosure without departing from the spirit or scope of the disclosure. Thus, the present disclosure is intended to include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

It will be appreciated by those skilled in the art that embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present disclosure is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present disclosure and not for limiting the scope thereof, and although the present disclosure has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: various alterations, modifications, and equivalents may be suggested to the specific embodiments of the invention, which would occur to persons skilled in the art upon reading the disclosure, are intended to be within the scope of the appended claims.

Claims (10)

1. A system for achieving a low pressure step feed in nitrogen, the system comprising:

the device comprises a first medium-pressure nitrogen press (1), a second medium-pressure nitrogen press (2), a third medium-pressure nitrogen press (3), a fourth low-pressure nitrogen press (4), a first spherical tank (5), a second spherical tank (6), a spherical tank inlet valve (7), a spherical tank medium-pressure inlet valve (8) and a spherical tank low-pressure inlet valve (9);

the output end of the first medium-pressure nitrogen compressor (1) is connected to a spherical tank inlet valve (7);

the output end of the second medium-pressure nitrogen compressor (2) is connected to a medium-pressure inlet valve (8) of the spherical tank;

the output end of the third medium-pressure nitrogen compressor (3) is connected to a spherical tank medium-pressure inlet valve (8);

the output end of the fourth low-pressure nitrogen compressor (4) is connected to a spherical tank low-pressure inlet valve (9);

the first spherical tank (5) spherical tank inlet valve (7) receives nitrogen of the first medium-pressure nitrogen compressor;

the second spherical tank (6) receives nitrogen of a fourth low-pressure nitrogen compressor through a spherical tank low-pressure inlet valve (9);

the spherical tank inlet valve (7) is connected with the first medium-pressure nitrogen compressor (1) and is used for conveying gas to the first spherical tank (5);

the spherical tank medium pressure inlet valve (8) is connected with the second medium pressure nitrogen press (2) and the third medium pressure nitrogen press (3) and is used for conveying gas to the first spherical tank (5);

the spherical tank low-pressure inlet valve (9) is connected with a fourth low-pressure nitrogen compressor (4) and is used for conveying gas to the second spherical tank (6).

2. A system for achieving a low pressure step feed in nitrogen according to claim 1, characterized in that the system further comprises a medium pressure nitrogen regulating valve (10); the medium-pressure nitrogen regulating valve (10) is used for regulating the pressure of the medium-pressure nitrogen in the first spherical tank (5).

3. A system for achieving a low pressure step feed in nitrogen according to claim 2, characterized in that the system further comprises a first low pressure nitrogen regulating valve (11); the first low-pressure nitrogen regulating valve (11) is used for regulating the pressure of the low-pressure nitrogen of the second spherical tank (6).

4. A system for achieving a low pressure step feed in nitrogen according to claim 1, characterized in that the system further comprises a second low pressure nitrogen regulator valve (12); the second low-pressure nitrogen regulating valve (12) is used for regulating the pressure of the low-pressure nitrogen of the second spherical tank (6).

5. A system for achieving a low pressure step feed in nitrogen according to claim 1, characterized in that the first medium pressure nitrogen press (1) comprises a compressor, an electric motor, a cooling system, a control system and an exhaust duct;

the compressor is used for sucking in nitrogen in the atmosphere and compressing the nitrogen to a medium pressure level;

the motor is used for providing power for the compressor;

the cooling system is used for reducing the temperature of the compressor;

the control system is used for monitoring and adjusting the operation of the compressor;

the exhaust system is used for delivering compressed nitrogen to a spherical tank inlet valve (7).

6. A low pressure step feed system in implementing nitrogen as recited in claim 1, wherein said compressor is a centrifugal compressor.

7. A system for realizing a low-pressure step feed in nitrogen according to claim 1, characterized in that it further comprises a filter-dryer, which is installed on the outlet line of the medium-pressure nitrogen regulating valve (10) and the first low-pressure nitrogen regulating valve (11).

8. A method for realizing low pressure step feed in nitrogen, characterized in that the method is realized based on the system of claims 1 to 7, the method comprising: the nitrogen is supplied at low pressure and the nitrogen is not supplied at low pressure.

9. The method for realizing low-pressure step feeding in nitrogen according to claim 8, wherein the low-pressure step feeding in nitrogen comprises:

operating a first medium-pressure nitrogen compressor (1), a second medium-pressure nitrogen compressor (2) and a fourth low-pressure nitrogen compressor (4); the third medium-pressure nitrogen press (3) is shut down;

and closing a spherical tank medium-pressure inlet valve (8), opening a spherical tank inlet valve (7) and a spherical tank low-pressure inlet valve (9), wherein medium-pressure nitrogen and low-pressure nitrogen independently operate, the medium-pressure nitrogen is supplied by a medium-pressure nitrogen regulating valve (10), and the low-pressure nitrogen is supplied by a second low-pressure nitrogen regulating valve (12).

10. The method for realizing low-pressure step feeding in nitrogen according to claim 8, further comprising the step of not distributing low pressure in nitrogen, specifically comprising the steps of:

and operating a third medium-pressure nitrogen press (3), stopping the first medium-pressure nitrogen press (1), the second medium-pressure nitrogen press (2) and the fourth low-pressure nitrogen press (4), opening a spherical tank medium-pressure inlet valve (8) and a spherical tank inlet valve (7), closing a spherical tank low-pressure inlet valve (9), feeding medium-pressure nitrogen by a pressure nitrogen regulating valve (10), and feeding low-pressure nitrogen by a first low-pressure nitrogen regulating valve (11).