Nitrogen-making pressurizing vehicle

Abstract

The invention discloses a nitrogen-making pressurized vehicle. The nitrogen-making pressurized vehicle comprises a nitrogen-making vehicle and a pressurized vehicle, the nitrogen making vehicle comprises a nitrogen making vehicle power system, an air compression system, an air purification system, a nitrogen separation system, a power generation system, a nitrogen making vehicle control system and a membrane rear pipeline; the supercharged vehicle comprises a supercharged vehicle power system, a supercharging system, a cooling system, a supercharged vehicle control system, a pipeline system and a filtering system. And the nitrogen making vehicle and the booster vehicle are detachably connected through a pipeline. The effects of conveniently and quickly preparing the nitrogen by utilizing the on-site conditions of the oil and gas field, pressurizing to the required pressure and directly meeting various operation requirements of well drilling, oil gas and the like are achieved.

Description

Technical Field

[0001] This invention belongs to the field of oilfield production equipment, specifically relating to a nitrogen booster truck. Background Technology

[0002] Nitrogen production technology refers to the industrial method of separating nitrogen from the air. Its core principle is to achieve efficient separation by utilizing the differences in physical or chemical properties between nitrogen and components such as oxygen. Membrane separation, in particular, utilizes the selective difference in gas permeation rates of hollow fiber membranes. "Fast gases" such as oxygen and water vapor preferentially permeate through the membrane wall and are discharged, while nitrogen, as a "slow gas," is enriched within the membrane tube and output. By adjusting system parameters, this method can produce nitrogen products with flexibly adjustable purity ranging from 90% to 99.9%, and its wide purity range is particularly suitable for diverse operational needs in mobile environments.

[0003] Traditional stationary nitrogen production plants and bottled nitrogen transportation supply models have revealed inherent limitations when dealing with special operational scenarios such as deserts, offshore platforms, and remote oil and gas fields. Currently, nitrogen production trucks used in remote, grid-free areas such as oil fields typically rely on diesel engines, and existing systems have room for optimization in terms of power transmission, load adaptive adjustment, and comprehensive energy utilization. In specific applications such as coal mine gas extraction drilling, high-pressure nitrogen is required as a slag discharge medium. Traditional nitrogen production trucks often require additional pressurization equipment to meet the terminal pressure, which not only increases system complexity and cost but may also affect the stable output of nitrogen. Some existing nitrogen production trucks may also suffer from problems such as inefficient coordination between units, incomplete parameter monitoring, and limited remote control functions.

[0004] A single nitrogen generator truck has insufficient output pressure due to limitations in technology, cost, and space. The outlet pressure of a single nitrogen generator truck, especially those using membrane separation or PSA technology, is typically limited, which is far from sufficient for operations requiring high-pressure nitrogen, such as gas lift in oil and gas wells, high-pressure pipeline purging and pressure testing, and certain chemical processes. If the produced nitrogen pressure does not meet operational requirements, it must be boosted using a booster truck. Boosting systems typically employ booster pumps or nitrogen compressors driven by compressed air or other gases to raise the nitrogen pressure to the required high pressure level.

[0005] In remote areas without power grids, existing nitrogen generators and turbochargers are typically powered by diesel engines. In natural gas-rich oil and gas fields, the inexpensive natural gas resources at the wellhead cannot be effectively utilized, resulting in high operating fuel costs and poor environmental performance. Summary of the Invention

[0006] This invention provides a nitrogen booster vehicle. The use of this equipment can overcome the shortcomings of the prior art and achieve the effect of conveniently and quickly producing nitrogen and boosting it to the required pressure using the conditions at the oil and gas field site, directly meeting the needs of various operations such as drilling and oil and gas.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a nitrogen generator booster vehicle, comprising a nitrogen generator vehicle and a booster vehicle; the nitrogen generator vehicle includes a nitrogen generator vehicle power system, an air compression system, an air purification system, a nitrogen separation system, a power generation system, a nitrogen generator vehicle control system, and a post-membrane pipeline; the booster vehicle includes a booster vehicle power system, a booster system, a cooling system, a booster vehicle control system, a pipeline system, and a filtration system; the nitrogen generator vehicle and the booster vehicle are detachably connected via pipelines.

[0008] Preferably, the nitrogen generator vehicle power system includes a nitrogen generator vehicle chassis, nitrogen generator vehicle tires disposed on the lower part of the nitrogen generator vehicle chassis, and a nitrogen generator vehicle compartment disposed on the upper part of the nitrogen generator vehicle chassis.

[0009] Preferably, the air compression system includes a vertical radiator; a nitrogen-generating gas engine is connected to the rear end of the vertical radiator; a screw air compressor is connected to the rear end of the nitrogen-generating gas engine; and an engine muffler is also provided on the nitrogen-generating gas engine.

[0010] Preferably, the air purification system includes an oil-gas separator; a post-cooling radiator is connected to the rear end of the oil-gas separator; a refrigerated dryer is connected to the rear end of the post-cooling radiator; a gas-liquid separator is connected to the rear end of the refrigerated dryer; an activated carbon tank is connected to the rear end of the gas-liquid separator; a filter is connected to the rear end of the activated carbon tank; and the refrigerated dryer, gas-liquid separator, and activated carbon tank are respectively connected to a wastewater tank via pipelines.

[0011] Preferably, the nitrogen separation system includes a heater; the rear end of the heater is connected to a nitrogen generation module via a pneumatic ball valve; the power generation system includes a generator set; and the nitrogen generation vehicle control system includes an explosion-proof control cabinet.

[0012] Preferably, the post-membrane pipeline includes a flow meter located at the rear end of the nitrogen generation module; a V-type regulating valve is connected to the rear end of the flow meter; a nitrogen buffer tank is connected to the rear end of the V-type regulating valve; and a vent valve is connected to the rear end of the nitrogen buffer tank.

[0013] Preferably, the turbocharged vehicle power system includes a turbocharged vehicle chassis, turbocharged vehicle tires disposed on the lower part of the turbocharged vehicle chassis, and a turbocharged vehicle compartment disposed on the upper part of the turbocharged vehicle chassis.

[0014] Preferably, the booster system includes a first-stage gas-liquid separator, a second-stage gas-liquid separator, a third-stage gas-liquid separator, and a fourth-stage gas-liquid separator connected in sequence; a reciprocating booster is connected to the rear end of the fourth-stage gas-liquid separator; the reciprocating booster is powered by a booster gas engine connected to it.

[0015] Preferably, the cooling system includes a high-pressure radiator and an engine radiator located at the rear end of the turbocharged gas engine; the turbocharged vehicle control system includes a positive pressure explosion-proof control cabinet.

[0016] Preferably, the piping system includes a venting muffler located at the rear end of the four-stage gas-liquid separator; the filtration system includes a gas filtration system located on the turbocharged gas engine.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention creates a mobile high-pressure nitrogen plant by highly integrating the nitrogen generation system and the pressurization system onto a unified vehicle platform. This system can be directly deployed to remote work sites such as deserts and offshore platforms, achieving integrated operation throughout the entire process from air compression and nitrogen separation to high-pressure output. This solves the problems of limited coverage, complex logistics chains, and slow response times inherent in traditional fixed plants and bottled nitrogen transportation methods. 2. Both the nitrogen generation equipment and the booster equipment use gas engines and share the natural gas storage and filtration system integrated by the booster vehicle, which realizes the single energy source for the vehicle group's power. It can also directly utilize cheap wellhead natural gas at the oil and gas field site, reducing fuel costs. 3. This invention ensures nitrogen quality and system reliability, extending the lifespan of core components. It integrates a highly efficient and reliable compressed air pretreatment system, comprising multi-stage precision filters, including a main pipeline filter, activated carbon filter, ultra-precision filter, and aftercooler. This system systematically removes oil, liquid water, and particulate matter from compressed air and effectively reduces its temperature, ensuring that the air entering the nitrogen generation module is always in a clean, dry, and low-temperature ideal state. This not only guarantees the high purity of the produced nitrogen but also fundamentally protects the precision core separation components, preventing performance degradation due to contamination and ensuring long-term stable operation and service life of the system. 4. The nitrogen booster of this invention can operate stably in remote areas without industrial power grid support, such as the Gobi Desert, offshore platforms, and remote oil and gas fields, thus eliminating the dependence on fixed power sources and expanding the geographical boundaries and working condition adaptability of the equipment. 5. Enhanced environmental tolerance and adaptability to operating conditions, ensuring stable uptime. Designed for harsh outdoor working environments, this invention incorporates specialized wind and sand protection, rainproofing, and high and low temperature resistance designs for the electrical and control systems, ensuring stable operation of the equipment under various extreme climatic conditions, demonstrating excellent environmental adaptability and uptime reliability. 6. The nitrogen booster vehicle of the present invention has a unified intelligent control center, which can centrally monitor and coordinate nitrogen production, boosting and gas supply.

[0018] Other features and advantages of this disclosure will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0020] Figure 1 The nitrogen booster vehicle of this invention is a three-dimensional representation of the nitrogen booster vehicle portion. Figure 1 ; Figure 2 The nitrogen booster vehicle of this invention is a three-dimensional representation of the nitrogen booster vehicle portion. Figure 2 ; Figure 3 The nitrogen booster truck of this invention is a three-dimensional representation of the booster truck portion. Figure 1 ; Figure 4 The nitrogen booster truck of this invention is a three-dimensional representation of the booster truck portion. Figure 2 ; Figure 5 This is a partial side view of the nitrogen-generating booster vehicle of the present invention; Figure 6 This is a front view of the nitrogen-generating booster vehicle of the present invention; Figure 7 This is a side view of the nitrogen-generating booster vehicle of the present invention; Figure 8 This invention relates to the internal structure of a nitrogen-generating booster vehicle. Figure 1 ; Figure 9 This invention relates to the internal structure of a nitrogen-generating booster vehicle. Figure 2 ; Figure 10 This is a diagram showing the internal structure of the booster section of the nitrogen-generating booster vehicle of the present invention; Figure 11 This is a flowchart of the nitrogen generation process for the nitrogen booster vehicle of the present invention; Figure 12 This is a flowchart of the nitrogen booster truck of the present invention. Figure 13 This is a diagram showing the operating status of the nitrogen booster truck of the present invention; Figure 14 This is a graph showing the power variation of the nitrogen-generating engine and the turbocharger engine of the nitrogen-generating and turbocharged vehicle of the present invention at different altitudes. In the diagram: 1. Nitrogen generator truck; 2. Booster truck; 11. Nitrogen generator truck chassis; 12. Nitrogen generator truck tires; 13. Nitrogen generator truck compartment; 14. Vertical radiator; 15. Nitrogen generator gas engine; 16. Screw air compressor; 17. Engine muffler; 18. Oil-gas separator; 19. Aftercooler radiator; 110. Refrigerated dryer; 111. Gas-liquid separator; 112. Activated carbon tank; 113. Filter; 114. Heater; 115. Nitrogen generator module; 116. Generator set; 117. Explosion-proof control cabinet; 118. Wastewater tank. 119. Nitrogen buffer tank; 120. Pneumatic ball valve; 121. Flow meter; 122. V-type regulating valve; 123. Vent valve; 21. Supercharged vehicle chassis; 22. Supercharged vehicle tires; 23. Supercharged vehicle compartment; 24. High-pressure radiator; 25. Primary gas-liquid separator; 26. Secondary gas-liquid separator; 27. Tertiary gas-liquid separator; 28. Quaternary gas-liquid separator; 29. ​​Reciprocating supercharger; 210. Supercharged gas engine; 211. Engine radiator; 212. Positive pressure explosion-proof control cabinet; 213. Vent silencer; 214. Gas filtration system. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0023] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0024] Please see Figures 1-14 The present invention provides a technical solution: The nitrogen generation and booster device of the present invention consists of two special vehicles, the core of which is that the nitrogen generation vehicle unit and the booster vehicle unit are respectively integrated on independent mobile chassis.

[0025] One is a nitrogen generator truck: Includes: a nitrogen generator vehicle power system to provide power to the vehicle, an air compression system and an air purification system to compress and pre-purify ambient air, a nitrogen separation system to separate nitrogen from the purified air, a power generation system, a nitrogen generator vehicle control system, and a pipeline behind the membrane.

[0026] Fixed nitrogen production plants or the transportation of large quantities of bottled nitrogen cannot cover remote areas such as deserts, offshore platforms, and remote oil and gas fields, resulting in extremely high transportation costs and discontinuous supply. The technical solution provided by this invention integrates a complete nitrogen production system onto a truck chassis, allowing it to be directly moved to the work site, eliminating the limitations of long-distance transportation and achieving direct nitrogen supply.

[0027] Nitrogen and oxygen are the main components of air, with nitrogen accounting for approximately 78% and oxygen approximately 21%. Existing nitrogen generation equipment, such as membrane separation and PSA systems, is typically designed for fixed factory environments. Their sophisticated separation components are ill-suited for harsh conditions in the field, including strong vibrations, impacts, significant temperature differences, sandstorms, and corrosion. This results in poor equipment reliability and short lifespan, limiting the application of on-site nitrogen generation technology in remote areas such as oil and gas fields. The technical solution provided by this invention aims to overcome the shortcomings of the aforementioned background technology. Its core lies in: compressing and purifying ambient air, and then using gas separation technology to enrich and purify the nitrogen components in the air, thereby obtaining high-purity nitrogen on-site.

[0028] The technical solution provided by this invention integrates a highly efficient compressed air pretreatment system into the nitrogen generator truck. This pretreatment system, through the synergistic effect of multiple purification units, systematically removes contaminants such as liquid water, oil, and particulate matter from the compressed air, ensuring that the air delivered to the nitrogen generator module meets its required high cleanliness and low dew point. This fundamentally guarantees the long-term stable operation of the core separation components and the purity of the final product, nitrogen.

[0029] The technical solution provided by this invention integrates an independent power system for the nitrogen generator truck, which provides power to the air compressor and all electrical equipment in the vehicle, freeing the equipment from dependence on a fixed industrial power grid and achieving energy self-sufficiency and independent operation in the absence of an external power source.

[0030] Another component of this invention is a turbocharged vehicle: Includes: a turbocharged vehicle power system to provide power to the vehicle, a turbocharging system to pressurize low-pressure nitrogen from a nitrogen generator or other gas sources, a cooling system, a turbocharged vehicle control system, a piping system, and a filtration system.

[0031] Fixed compression stations are immobile, and existing mobile booster equipment, limited by space and weight, has limited output pressure, failing to meet the ultra-high pressure requirements of deep well gas lift and pipeline pressure testing. Existing equipment largely relies on diesel engines, which cannot utilize inexpensive wellhead gas sources in natural gas-rich oil and gas fields, resulting in high fuel costs and poor environmental performance. The technical solution provided by this invention uses a mobile chassis as the carrying and transportation platform for the entire system, enabling rapid access to various remote work sites. The power system provides independent power to the entire booster equipment, selectable from a gas engine, diesel engine, or electric motor, preferably a gas engine that can directly utilize on-site natural gas, significantly reducing operating costs.

[0032] The technical solution provided by this invention uses a multi-stage pressurization system with at least two stages of "compression-cooling-separation" cycle units, preferably a four-stage reciprocating piston compressor unit. Through a progressive pressurization process, the low-pressure nitrogen gas of the self-made nitrogen vehicle is stably pressurized to an ultra-high pressure state in the range of 25-40MPa.

[0033] The technical solution provided by this invention also includes an integrated safety and control system. This system combines multiple redundant safety mechanisms with a centralized intelligent control unit to achieve real-time monitoring, fault warning, and safety interlocking of the high-pressure boosting process. This overcomes the shortcomings of traditional equipment's single safety measures and reliance on manual operation, achieving inherent safety in high-pressure operations under complex conditions.

[0034] The combination of a nitrogen generator truck and a booster truck in this invention ensures both high-purity nitrogen production and stable high-pressure output, forming a complete mobile high-pressure nitrogen supply solution. The nitrogen generator truck is responsible for producing nitrogen, and its core task is to separate a large amount of low-pressure nitrogen that meets the purity requirements from the air; the booster truck is responsible for refining the nitrogen, and its core task is to compress the low-pressure nitrogen produced by the nitrogen generator truck to the high-pressure state required for operation.

[0035] The nitrogen generator truck and the booster truck can work together to form a complete on-site nitrogen generation and booster operation, or they can be used as independent units in different application scenarios. When working together, the nitrogen generator truck produces nitrogen with a purity of over 90% and directly delivers it to the booster truck for pressure boosting. When used independently, the nitrogen generator truck can provide a gas source for occasions requiring atmospheric or low-to-medium pressure nitrogen, while the booster truck can be used independently for boosting various gaseous media, including imported nitrogen, air, and natural gas. This modular design enhances the applicability and economy of the equipment, allowing a single unit to participate in integrated operations or function independently, significantly improving equipment utilization and return on investment.

[0036] The technical solution provided by this invention features a nitrogen generator truck and a booster truck that possess excellent environmental adaptability, structural reliability, and off-road mobility in their overall design and integration. Their overall structure meets the operational and driving requirements under harsh climates and complex road conditions, ensuring stable operation of the equipment in demanding environments such as oil and gas fields. Example:

[0037] This invention provides a nitrogen-generating booster vehicle, see nitrogen-generating vehicle 1. Figures 1-2 See also turbocharged vehicle 2 Figures 3-4 The system includes: a nitrogen generator chassis 11, nitrogen generator tires 12, a nitrogen generator compartment 13, and a booster truck chassis 21, booster truck tires 22, and a booster truck compartment 23; the nitrogen generator and booster truck are respectively mounted on the chassis. The chassis is the foundation of the entire system, providing the necessary installation and securing conditions for the nitrogen generator and booster trucks, and also driving the nitrogen generator and booster trucks, thus enabling flexible relocation of work sites. The entire system meets the requirements for fire prevention, explosion prevention, sand prevention, and rain protection in oil and gas fields, and can operate normally under windy, sandy, rainy, and snowy weather conditions.

[0038] Specifically, both the nitrogen generator truck and the booster truck are equipped with metal hull protection. (See also...) Figures 5-7The cabin is rainproof and dustproof, and features sound and heat insulation. After removing the fixing screws, the entire cabin can be lifted out for easy equipment overhaul. The cabin has doors on both sides that open upwards and downwards. The upward-opening door is supported by nitrogen springs, while the downward-opening door can be folded down to serve as a walkway. Both doors are equipped with locks for safety and aesthetics. All supplied equipment has excellent sealing and vibration resistance to ensure it can operate in humid, rainy, and sandy conditions, and can withstand operating temperatures from -19°C to +35°C. The main profiles of the subframe and key load-bearing components are made of high-strength Q355D, while other non-load-bearing components are made of Q235B or other materials with equivalent performance. Two fire extinguisher brackets are installed in suitable locations within the cabin or at the bottom, and two 8KG ABC type fire extinguishers are provided for emergencies. The bottom of the cabin is designed with hose supports and a toolbox for easy carrying of hoses and storage of related tools.

[0039] Heating systems (heating cables or penetrating electric heaters) are installed on key components of nitrogen generator trucks and booster trucks, such as sewage pipes, sewage tanks, lubricating oil tanks, and modules, to adapt to high-altitude and cold environments, thereby ensuring that the equipment on the platform can be put into use quickly in cold environments.

[0040] Secondly, each vehicle is equipped with a positive pressure explosion-proof control cabinet 212, which houses a PLC and communication module. The PLC and communication module are selected from the Siemens S7-1200 series, which features fast processing speed, stable performance, and more flexible interfaces such as DI, DQ, AI, AQ, and PI. A tri-proof tablet computer is installed in the driver's cab for communication with the local control cabinets of the nitrogen generator and booster trucks, enabling remote monitoring and control of equipment operation.

[0041] In the nitrogen generator truck, see [link / reference] Figures 8-9 : This nitrogen generator truck uses a 480kW nitrogen-generating gas engine 15 as its core power source. This power configuration not only provides energy for the nitrogen generation process but can also directly utilize natural gas resources that may be available at the work site. In terms of the nitrogen generation process, the nitrogen generator truck uses membrane separation for nitrogen generation. The system of this embodiment can operate stably within a wide operating range, from -19℃ to +35℃ and at an altitude not exceeding 2700 meters. Its specific performance parameters are: at an altitude below 1000m, the nitrogen generator truck 1 produces a gas flow rate of not less than 1200Nm³. 3 / h; At an altitude of 2700 meters, given the decrease in air density, the gas production flow rate can still be guaranteed to be no less than 1000 Nm³. 3 / h. The purity of the produced nitrogen can be adjusted within the range of 90%-95%. After being processed by the booster truck 2, the exhaust pressure of the nitrogen can reach 35MPa to meet the non-continuous requirements of related high-pressure operations.

[0042] The screw air compressor 16 mounted on the nitrogen generator truck of this invention has an input power of 430kW and a rated continuous operating exhaust pressure of 14bar. The compressed air pretreatment system includes four stages of filters 113, with filtration precision as follows: primary filter 100μm, secondary filter 1μm, tertiary filter 0.5μm, and quaternary filter 0.01μm. The maximum allowable operating pressure of the nitrogen generator module 115 is 20bar, and its suitable operating temperature range is 5℃-55℃. The module used in this embodiment consists of 20 membrane tubes. To ensure the nitrogen generator module 115 operates under ideal conditions, its temperature is controlled in combination with a pre-heater 114 and a module heating cable.

[0043] The nitrogen-generating vehicle of this invention integrates a self-contained power system, which consists of a gas generator set 116 with a rated power of 100kW and a rated output voltage of 400V. This power system can supply power to all electrical equipment in the vehicle, covering the electrical systems in the nitrogen generation process and the electrical systems of the compressor vehicle.

[0044] In this embodiment, the piping system is used to connect various components and transport the medium. The pipe outlet of the screw air compressor 16 is connected to the pipe inlet of the gas-liquid separator 111. The piping system includes a screw air compressor 16 inlet pipe connected to the inlet of the oil-gas separator 18; an oil-gas separator 18 pipe outlet connected to the inlet of the aftercooler radiator 19; an aftercooler radiator 19 pipe outlet connected to the inlet of the refrigerated dryer 110; a refrigerated dryer 110 pipe outlet connected to the inlet of the nitrogen generator gas-liquid separator 111; a nitrogen generator gas-liquid separator 111 pipe outlet connected to the inlet of the activated carbon tank 112; an activated carbon tank 112 pipe outlet connected to the inlet of the first to fourth stage filters 113; a first to fourth stage filter 113 pipe outlet connected to the inlet of the heater 114; and a heater 114 pipe outlet connected to the inlet of the nitrogen generator module 115. The gas from the nitrogen generator module 115 is then discharged through the pipes, thus achieving nitrogen generation.

[0045] To ensure the effectiveness of the module, the compressed air must be dewatered, degreased, and decomposed of particles before entering the module. The nitrogen generator of this invention is equipped with an activated carbon tank 112 to remove oil from the air and a four-stage filter 113. The filter 113 has both manual and automatic drainage options at its bottom, with the automatic drainage controlled by a PLC for timed automatic drainage. The drainage pipeline is equipped with heat insulation material and a heating cable. The low-temperature compressed air discharged from the outlet of the rear cooler radiator 19 enters the inlet of the refrigerated dryer 110 to remove moisture. The purified compressed air then enters the gas-liquid separator 111 from the outlet for centrifugal separation to remove moisture and particulate matter from the air. A drainage pipeline is designed at the lower end of the gas-liquid separator 111, which is then connected to a wastewater tank 118. A level switch is installed on the gas-liquid separator 111 itself. The drainage port is designed with both manual and automatic venting lines, with a manual ball valve installed on the manual venting line. The automatic venting pipeline is equipped with an explosion-proof solenoid valve and a manual ball valve. The explosion-proof solenoid valve is controlled by a PLC and can perform periodic drainage according to a program to ensure the normal operation of the gas-liquid separator 111.

[0046] refer to Figure 11 In the actual operation of the system of this invention, compressed air filtered by a four-stage purification filter 113 enters a dedicated heating tank. An electric heater 114 with a total power of 35kW is integrated at the top of this tank, and the heating power is precisely controlled through a controllable module. Based on real-time monitoring data from the temperature transmitter in the pre-membrane pipeline, a PID control algorithm is used to dynamically adjust the heating power, stabilizing the gas temperature within the set value within the range of 0-50℃, ensuring that the membrane separation system is always in the optimal operating temperature range. The main function of heating the compressed air is: (1) Appropriately increasing the temperature of compressed air is beneficial to improving the efficiency of membrane separation and increasing the nitrogen production rate.

[0047] (2) Increasing the temperature of compressed air can effectively prevent water vapor in the membrane tube from condensing into water droplets and damaging the nitrogen separation membrane.

[0048] Specifically, a first pressure sensor is installed at the front end of the outlet pipe of heater 114 entering the inlet of nitrogen generator module 115 to monitor the pressure of the heated gas in real time. When the pressure exceeds the set safety value, the system will discharge the overpressure gas through a parallel venting branch. This venting branch is equipped with a shut-off valve, which can be used as a manual isolation valve to completely shut off the gas during maintenance or long-term non-venting, ensuring reliable sealing. Secondly, a second pressure sensor is installed at the rear end of the inlet of nitrogen generator module 115, forming a closed-loop control system with its pneumatic ball valve 120. This sensor detects the inlet pressure in real time and feeds the signal back to the control system, thereby precisely adjusting the opening of pneumatic ball valve 120. Pneumatic ball valve 120 can be used as a quick shut-off valve to isolate nitrogen generator module 115.

[0049] The pipeline downstream of the nitrogen generator module 115 outlet is collectively referred to as the post-membrane pipeline. This pipeline is equipped with a flow meter 121, an oxygen concentration transmitter, a temperature transmitter, a pressure transmitter, a proportional valve, a check valve, and a vent valve 123. Their respective functions are as follows: Flow meter 121 measures the instantaneous flow rate of nitrogen; oxygen concentration transmitter measures the oxygen concentration in the downstream pipeline, thereby automatically calculating the nitrogen concentration; temperature transmitter is explosion-proof and measures the temperature of nitrogen in the downstream pipeline; pressure transmitter is explosion-proof and measures the discharge pressure of nitrogen in the downstream pipeline; proportional valve adjusts the nitrogen flow rate, thereby adjusting the nitrogen concentration; check valve prevents high-pressure gas backflow from damaging the nitrogen-generating membrane; vent valve 123 is an electric three-way ball valve. Before operation, this valve is switched to the vent pipe to purge the delivery pipeline to ensure nitrogen purity. After operation, this valve is operated to guide the pressurized nitrogen accumulated in the pipeline into the vent pipe for release.

[0050] During the operation of the nitrogen generator truck 1, the high-temperature, high-pressure oil-gas mixture discharged from the screw air compressor 16 first enters the oil-gas separator 18. After oil-gas separation, the high-temperature lubricating oil is discharged from the bottom pipe of the oil-gas separator 18 and transported through a dedicated pipeline to the vertical radiator 14 driven by the nitrogen generator gas engine 15 for cooling. The cooled lubricating oil then flows back to the compressor host to resume its lubrication, sealing, and cooling functions, thus achieving resource recycling.

[0051] In turbocharged vehicles, see Figure 10 : The turbocharger truck uses a 380kW turbocharged gas engine 210 as its core power source, which can directly utilize natural gas resources that may be available at the work site. The turbocharger core adopts a five-stage, four-row reciprocating turbocharger 29, with a maximum output pressure of 35MPa and a standard processing capacity of 1200Sm. 3 / h. The engine and turbocharger are connected via a diaphragm coupling, smoothly transmitting torque and power. This turbocharger can compress nitrogen or natural gas from 1.1MPa to 35MPa, effectively reducing the risk of high cylinder temperatures.

[0052] The piping system connects the various components and the transported medium. Specifically, the nitrogen pipeline at the system inlet connects to the inlet pipeline of the primary gas-liquid separator 25. (Reference) Figure 12In the pressurization system of this invention, a straight-through Lansie filter and an electric ball valve are sequentially installed on the air inlet pipe from the nitrogen inlet to the primary gas-liquid separator 25, according to the direction of medium flow, together constituting the pretreatment unit at the front end of the system. The outlet pipe of the primary gas-liquid separator 25 is connected to the primary compression inlet. From the outlet of the primary compression pipe, it is connected to the inlet of the secondary gas-liquid separator 26 through the high-pressure radiator 24. The outlet of the secondary gas-liquid separator 26 is connected to the secondary compression inlet. The outlet of the secondary compression pipe is connected to the inlet of the tertiary gas-liquid separator 27 through the high-pressure radiator 24. From the outlet of the tertiary gas-liquid separator 27, it enters the tertiary compression inlet. From the outlet of the tertiary compression pipe, it is connected to the inlet of the quaternary gas-liquid separator 28 through the high-pressure radiator 24. The outlet of the quaternary gas-liquid separator 28 enters the quaternary compression inlet. The outlet of the quaternary compression pipe leads to the working point through the high-pressure radiator 24.

[0053] In the nitrogen generator of this embodiment, nitrogen gas is filtered by a gas-liquid separator before entering each stage cylinder to prevent particulate matter from entering the cylinder. Furthermore, each stage discharge pipeline is equipped with an explosion-proof pressure transmitter, an explosion-proof temperature transmitter, a safety valve, and a high-pressure radiator 24.

[0054] In the above embodiments, the present invention employs an integrated sewage system to manage liquid impurities in the pressurization unit. Independent sewage pipes are installed at the bottom of each of the first to fourth stage gas-liquid separators, with each sewage port equipped with dual manual ball valves to provide mechanical isolation redundancy. The sewage branch pipes of each separator ultimately converge into the integrated sewage main pipe and are uniformly discharged into the sewage tank 118 for media collection. Specifically, the dual manual ball valves installed at the bottom of each gas-liquid separator provide double isolation protection, ensuring complete sealing during maintenance.

[0055] In this invention, dual pressure monitoring devices are installed on the connecting pipes between each stage of the compression unit and the high-pressure radiator 24 in the booster system. Specifically, two independent pressure sensors are installed in parallel between the exhaust pipes of the first to fourth stage compressors and the intake ports of the corresponding high-pressure radiators 24 for each stage.

[0056] refer to Figure 12 At the end of the high-pressure nitrogen delivery pipeline after four stages of compression and cooling, there are two key manual safety control devices: First, a special manual valve is installed on the intake pipe of the vertically installed venting silencer 213 for system purging and safety pressure relief control before and after operation; Second, a final exhaust manual valve is installed on the main pipeline that finally outputs to the wellhead, serving as the ultimate mechanical isolation device at the system output end.

[0057] The gas filtration system 214 of this invention comprises, in sequence according to the medium flow direction, a wellhead filter, a coarse filter, and a fine filter. The natural gas, after multi-stage purification, ultimately flows into a natural gas collection tank. The main inlet pipe of this collection tank is connected to the outlet of the fine filter, and the tank body is equipped with three independent output ports, which are respectively connected to the nitrogen generator vehicle's power system and the booster vehicle's power system via dedicated pipelines.

[0058] In the aforementioned process, a dual valve system is installed on the connecting pipeline from the system inlet to the wellhead filter: a heavy-duty handwheel ball valve and a pneumatic ball valve, respectively. Secondly, each wellhead filter has an independent drain pipe at its bottom, which ultimately converges into a unified drain collection system. Specifically, both key filtration devices are equipped with a dual valve control unit on their respective drain pipes: an automatically controlled electric drain valve and a mechanically operated manual drain valve connected in parallel. This dual drain design achieves automated process management and ensures the system's emergency handling capability under abnormal operating conditions. When the control system detects excessive filter differential pressure, the electric valve will automatically open for draining; in case of electrical faults, emergency operation can be performed via the manual valve.

[0059] The working process of the nitrogen booster truck is as follows, see below. Figure 13 : Natural gas enters through the pipeline interface at the rear of the turbocharged vehicle. It first passes through a wellhead filter to remove large solid impurities, and then passes through a coarse filter and a fine filter in sequence to systematically complete the deep purification of impurities such as particulate matter, liquid water and light oil. The purified clean natural gas is collected in a natural gas collection tank, which is stably supplied with fuel through three independent pipelines to the nitrogen-generating gas engine 15, the generator set 116 and the turbocharged gas engine 210.

[0060] When the nitrogen-generating gas engine 15 starts working, ambient air is drawn into the main unit of the screw air compressor 16. Under the action of the meshing rotors, its containment space gradually decreases, the gas is forcibly compressed, and the pressure and temperature rise accordingly. During the compression process, the system continuously injects a large amount of cooling lubricating oil into the compression chamber. This lubricating oil carries away the heat generated by compression. Finally, the oil-gas mixture that has reached the predetermined pressure is discharged from the exhaust port and enters the oil-gas separator 18.

[0061] After the high-temperature lubricating oil enters the oil-gas separator 18, the oil is separated and flows out from the bottom of the separator. It is then transported through a dedicated pipeline to the vertical radiator 14 driven by the nitrogen generator gas engine 15 for forced cooling. The lubricating oil cooled down by this cooling process eventually flows back into the screw air compressor 16, realizing a closed-loop recycling of the lubricating oil.

[0062] Meanwhile, the high-temperature gas, after preliminary purification by the oil-gas separator 18, is first cooled by the aftercooler 19, and then the cooled gas enters the refrigerated dryer 110 for deep dehumidification. During this stage, the system can effectively remove more than 95% of the liquid water, and this condensate is discharged to the wastewater tank 118 for unified treatment via an automatic drainage device. The resulting dry gas is then transported to the gas-liquid separator 111 to complete the pre-purification process.

[0063] The pre-purified dry gas first passes through the activated carbon canister filter 112, which effectively adsorbs residual vapors and organic impurities. It then sequentially passes through primary to quaternary filters 113 for further filtration. This multi-stage filtration architecture systematically removes various impurities, including liquid oil mist and gaseous particles, ensuring the cleanliness of the gas entering the membrane separation system.

[0064] After undergoing multi-stage purification, the gas is heated to the 0-50°C range by heater 114 and then enters the nitrogen generation module 115. Inside the module, taking advantage of the difference in permeation rates of different gas components in the hollow fiber membrane, impurity gases such as oxygen (O2) with faster permeation rates preferentially permeate through the membrane wall and are discharged from the exhaust port above the membrane module, while nitrogen with slower permeation rates is enriched in the membrane tube, thereby obtaining high-purity nitrogen (N2) product. Then, the nitrogen is regulated by an electric V-type regulating valve 122 on the output pipeline. By changing the valve opening, the nitrogen discharge and output pressure can be controlled for the next pressurization operation.

[0065] During the collaborative operation of nitrogen generator 1 and booster 2, nitrogen gas produced by the nitrogen generator unit, meeting purity requirements, enters the booster system via a delivery pipeline, initiating a multi-stage progressive boosting process. This system employs a four-stage compression architecture, following a process cycle of separation-boosting-cooling. Through multi-stage progressive boosting, it ensures that the nitrogen gas remains in optimal condition throughout the pressure increase process. The nitrogen produced by the nitrogen generator first enters the primary gas-liquid separator 25. After preliminary purification, the nitrogen then enters the primary compression unit for initial pressurization. The high-temperature nitrogen generated during compression is cooled by the high-pressure radiator 24. The cooled nitrogen then enters the secondary gas-liquid separator 26 for gas-liquid separation. The separated nitrogen then enters the secondary compression unit for further pressurization. The pressurized high-temperature nitrogen is also cooled by the corresponding high-pressure radiator 24. It then passes through the tertiary gas-liquid separator 27 and then the tertiary compression unit for further compression. The pressurized nitrogen is cooled by the high-pressure radiator 24 again and finally separated by the quaternary gas-liquid separator 28. The separated nitrogen then undergoes quaternary compression and is finally cooled by the high-pressure radiator 24. The high-pressure nitrogen, after four stages of complete processing, is then transported to the working wellhead through pipelines.

[0066] It should be noted that, to ensure continuous operational safety and ease of maintenance, this invention incorporates dual isolation protection on all critical process pipelines: redundant safety measures consisting of automatically controlled solenoid valves and manually operated ball valves. This configuration not only provides dual protection with rapid remote automatic shut-off and local manual shutdown, but also offers a reliable mechanical isolation point for equipment maintenance, enhancing the overall safety and operational flexibility of the system.

[0067] It should be noted that the present invention incorporates multiple safety monitoring and protection mechanisms in the gas filtration system 214. Specifically, each branch pipe of the wellhead filter is independently equipped with a safety valve. When the pipeline pressure exceeds the preset safety limit due to abnormal operating conditions, the safety valve will automatically open, quickly guiding the excess gas into the venting system, effectively preventing damage to system components due to overpressure.

[0068] In the nitrogen booster equipment provided in the above embodiments, both the nitrogen generator vehicle 1 and the booster vehicle 2 use gas engines as their power systems. This allows them to share fuel with the gas filtration system integrated into the booster vehicle 2, achieving single-source and efficient use of energy for the vehicle group and significantly reducing operating costs at oil and gas fields. Of course, the power system can also be selected based on the energy resources of the work site. For example, a high-power diesel engine can be used to ensure power stability in areas with scarce natural gas resources; or, in fixed locations with a stable industrial power grid, an electric drive system can be used to achieve zero-emission, low-noise clean operation.

[0069] In the nitrogen-generating turbocharged vehicle provided in the above embodiments, the rated power of the gas engine is 480kW. It is understood that the engine power configuration is not limited to this; depending on actual operating conditions and load requirements, a power range of 300kW to 600kW can achieve the objectives of this invention. For example, in scenarios with light loads or low operational intensity, a 300kW-level engine can be selected to optimize costs; while when more severe operating conditions need to be addressed or a larger power margin is required, a 600kW-level engine can be selected.

[0070] In the nitrogen booster equipment provided in the above embodiments, the screw air compressor 16 mounted on the nitrogen booster vehicle 1 has an input power of 430kW and a rated continuous operating discharge pressure of 14bar. It is understood that the compressor's parameter configuration is not limited to this; depending on the nitrogen production scale and output pressure requirements, an input power in the range of 350kW to 500kW and a rated discharge pressure in the range of 8bar to 16bar can achieve the purpose of this invention. For example, in cases with lower processing capacity requirements, a unit with an input power of 350kW and a discharge pressure of 8bar can be selected to optimize energy consumption; while when a higher processing capacity is required or pressure margin is reserved for subsequent processes, a unit with an input power of 500kW and a discharge pressure of 16bar can be selected. Secondly, the booster gas engine 210 of the booster vehicle has a rated power of 380kW. It is understood that the engine's power configuration is not limited to this; depending on the load and output pressure requirements of the booster system, a power in the range of 300kW to 500kW can achieve the purpose of this invention. For example, in scenarios where medium-pressure boosting or intermittent operation is the primary function, a 300kW-class engine can be selected to optimize fuel economy; while in situations requiring continuous ultra-high-pressure operation or handling larger volumes of air, a 500kW-class engine can be selected to ensure ample power and reliable operation.

[0071] In the nitrogen-generating booster vehicle provided in the above embodiment, the nitrogen-generating module 115 consists of twenty membrane tubes. It is understood that the number of membrane tubes is not limited to this; depending on the target nitrogen production and purity requirements, the number can range from eighteen to twenty-five to achieve the purpose of this invention. For example, in cases where higher gas production is desired but purity requirements are slightly lower, eighteen membrane tubes can be configured; while when higher purity needs to be ensured, twenty-five membrane tubes can be configured.

[0072] In the nitrogen-generating booster vehicle provided in the above embodiments, the compressed air dehumidification unit of the nitrogen-generating vehicle 1 is a refrigerated dryer 110. This allows for the efficient and economical removal of most of the liquid water from the compressed air, meeting the basic dew point requirements for membrane separation nitrogen generation. Alternatively, an adsorption dryer can be used as the dehumidification unit. This equipment utilizes the adsorption effect of a desiccant to deeply remove water vapor, resulting in dry air with a lower pressure dew point. However, its equipment cost and regeneration energy consumption are relatively high, making it suitable for applications with extreme requirements for air dryness.

[0073] In the nitrogen booster equipment provided in the above embodiments, the compression system of the booster vehicle 2 adopts a five-stage, four-row reciprocating compressor 29. In this way, through multi-stage progressive pressurization and interstage cooling, the gas can be smoothly and efficiently compressed to an ultra-high pressure of over 35 MPa, with a small single-stage pressure rise and high equipment reliability. Of course, the compression system can also be simplified to a three-stage or four-stage compression architecture according to the final output pressure requirements to achieve a balance between cost and performance; or, in applications requiring higher flow rates, a combination of a high-pressure screw compressor and a reciprocating compressor connected in series can be used.

[0074] In the nitrogen booster vehicle provided in the above embodiments, the maximum output pressure of the reciprocating booster 29 is 35 MPa. It is understood that this output pressure configuration is not limited to this; depending on the actual needs of the terminal operation, the maximum output pressure can be achieved within the range of 25 MPa to 40 MPa to achieve the purpose of this invention. For example, in scenarios such as medium- and high-pressure nitrogen injection or pipeline pressure testing, an output of 25 MPa is sufficient; while in extreme conditions such as ultra-deep well gas lift and ultra-high-pressure testing, an output capacity of 40 MPa is required, and the booster system of this invention can handle this range.

[0075] In the nitrogen booster equipment provided in the above embodiments, the gas supply system is integrated on the booster vehicle 2, and supplies gas to the nitrogen-generating gas engine 15 and generator set 116 via pipelines. This achieves multi-purpose use of the fuel supply system, simplifies the structure, and reduces overall complexity and cost. Of course, the nitrogen-generating vehicle 1 and the booster vehicle 2 can also each integrate independent gas filtration and pressure regulation systems, directly drawing gas from the on-site gas source. This solution increases the independence of the equipment, avoids connecting fuel pipelines between vehicles, and is suitable for operational scenarios with long vehicle distances or more flexible layouts.

[0076] In the nitrogen generator booster equipment provided in the above embodiments, the gas generator set 116 integrated in the nitrogen generator vehicle 1 can simultaneously supply power to the electrical systems of both the nitrogen generator vehicle 1 and the booster vehicle 2. This achieves centralized power supply and management for the vehicle group, reducing the equipment complexity and manufacturing cost of the entire system. Of course, the nitrogen generator vehicle 1 and the booster vehicle 2 can also be equipped with independent generator sets. This approach increases the power autonomy of a single unit and is suitable for specific operational scenarios where the two vehicles need to be deployed separately over a long distance.

[0077] In the nitrogen generation and booster equipment provided in the above embodiments, the nitrogen generation vehicle 1 and the booster vehicle 2 adopt independent vehicle-mounted structures. This ensures high mobility for both vehicles, allowing for rapid and independent relocation. They can operate collaboratively or independently, resulting in high equipment utilization and return on investment. Alternatively, the nitrogen generation and booster systems can be configured with a multi-skid layout, placing each functional module on an independent skid, and quickly connected on-site to form a system, enhancing adaptability to different chassis specifications and special road conditions. Alternatively, the entire system can be integrated onto a single ultra-large chassis to form an integrated nitrogen generation and booster vehicle, simplifying on-site docking procedures.

[0078] The complete nitrogen generation system and booster system are highly integrated onto two independent mobile chassis, creating a mobile high-pressure nitrogen plant solution that can be separated and combined. Both nitrogen generation vehicle 1 and booster vehicle 2 are powered by gas engines and share a natural gas filtration and supply system integrated on booster vehicle 2, enabling efficient utilization of inexpensive wellhead gas sources at the oil and gas field site; as well as a shared natural gas pretreatment system to supply fuel to the two gas engines.

[0079] A high-power nitrogen-generating gas generator set 116 is integrated on the nitrogen-generating vehicle 1 to construct an independent "vehicle-mounted microgrid". This grid not only supplies power to all electrical equipment of the nitrogen-generating vehicle 1, but can also be extended to provide power to the booster vehicle 2 that works in cooperation, realizing centralized supply and management of power for the vehicle group.

[0080] A shared natural gas pretreatment system, namely a gas filtration system 214, is integrated on the turbocharged vehicle. This system serves as the fuel center for the entire vehicle group, providing clean and stable natural gas to the three core power units: the nitrogen-generating gas engine 15 of the nitrogen-generating vehicle, the gas generator set 116 of the nitrogen-generating vehicle, and the turbocharged gas engine 210 of the turbocharged vehicle. The nitrogen-generating gas engine 15 and the turbocharged gas engine 210 of this invention exhibit excellent performance at different altitudes; their specific power variation curves are shown in [reference needed]. Figure 14 The solid line represents nitrogen-generating gas engine 15, and the dashed line represents turbocharged gas engine 210.

[0081] More specifically: For nitrogen generator truck 1: 1. The power system of the nitrogen generator vehicle 1 includes a nitrogen generator gas engine 15 with a rated power of 300-600kW; and a generator set 116 fueled by natural gas; 2. The nitrogen generator 1 includes a lubricating oil cooling circuit, which connects the oil-gas separator 18 of the air compressor, the vertical radiator 14 driven by the engine, and the screw air compressor 16 in series to form a cycle. 3. The complete process of “compression-oil-gas separation-post-cooling-cold drying-gas-liquid separation-activated carbon filtration-multi-stage precision filtration-heating-membrane separation” is adopted, and the temperature of the gas entering the membrane is precisely controlled at 0-50℃ through heater 114 and heat tracing cable to ensure that the nitrogen generation membrane unit 115 works in the best condition.

[0082] For turbocharged vehicle 2: 1. The multi-stage reciprocating booster compressor 29 is adopted, preferably five stages and four rows. Through multiple cycles of "compression-cooling-gas-liquid separation", the gas is stably boosted from low pressure to ultra-high pressure, ranging from 25-40MPa. The single-stage pressure rise is small and the reliability is high. 2. The power system of the turbocharged vehicle 2 is a turbocharged gas engine 210 with a rated power of 300-500kW, which is connected to the reciprocating turbocharger 29 through a modular coupling; 3. Install an venting pipe equipped with a venting silencer 213 at the end of the pressurization system, and design a circulation pipe with a one-way valve at its front end to connect to the system inlet for system purging before operation and safe depressurization after operation. 4. Two independent pressure sensors are installed in parallel on the exhaust pipes of each compression unit in the booster system; parallel automatic and manual valves are installed on the key drain pipes of the system.

[0083] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A nitrogen generation pressurization vehicle, characterized by: The nitrogen production pressurizing vehicle comprises a nitrogen production vehicle (1) and a pressurizing vehicle (2); the nitrogen production vehicle (1) comprises a nitrogen production vehicle power system, an air compression system, an air purification system, a nitrogen separation system, a power generation system, a nitrogen production vehicle control system and a post-membrane pipeline; the pressurizing vehicle (2) comprises a pressurizing vehicle power system, a pressurizing system, a cooling system, a pressurizing vehicle control system, a pipeline system and a filtering system; the nitrogen production vehicle (1) and the pressurizing vehicle (2) are detachably connected through pipelines.

2. A nitrogen generation and pressurization vehicle as claimed in claim 1, characterized in that: The nitrogen production vehicle power system comprises a nitrogen production vehicle chassis (11), nitrogen production vehicle tires (12) arranged at the lower part of the nitrogen production vehicle chassis (11) and a nitrogen production vehicle cabin body (13) arranged at the upper part of the nitrogen production vehicle chassis (11).

3. The nitrogen generation and pressurization vehicle of claim 1, wherein: The air compression system comprises a vertical radiator (14); the rear end of the vertical radiator is connected with a nitrogen production gas engine (15); the rear end of the nitrogen production gas engine (15) is connected with a screw air compressor (16); the nitrogen production gas engine (15) is further provided with an engine silencer (17).

4. The nitrogen generation and pressurization vehicle of claim 1, wherein: The air purification system comprises an oil-gas separator (18); the rear end of the oil-gas separator (18) is connected with a post-cooling radiator (19); the rear end of the post-cooling radiator (19) is connected with a cold dryer (110); the rear end of the cold dryer (110) is connected with a gas-liquid separator (111); the rear end of the gas-liquid separator (111) is connected with an activated carbon tank body (112); the rear end of the activated carbon tank body (112) is connected with a filter (113); the cold dryer (110), the gas-liquid separator (111) and the activated carbon tank body (112) are respectively connected with a sewage tank (118) through pipelines.

5. The nitrogen generation pressurization vehicle of claim 1, wherein: The nitrogen separation system comprises a heater (114); the rear end of the heater (114) is connected with a nitrogen production module (115) through a pneumatic ball valve (120); the power generation system comprises a generator set (116); the nitrogen production vehicle control system comprises a control explosion-proof cabinet (117).

6. The nitrogen generation pressurization vehicle of claim 1, wherein: The post-membrane pipeline comprises a flowmeter (121) arranged at the rear end of the nitrogen production module (115); the rear end of the flowmeter (121) is connected with a V-shaped regulating valve (122); the rear end of the V-shaped regulating valve (122) is connected with a nitrogen buffer tank (119); the rear end of the nitrogen buffer tank (119) is connected with a vent valve (123).

7. The nitrogen generation pressurization vehicle of claim 1, wherein: The pressurizing vehicle power system comprises a pressurizing vehicle chassis (21), pressurizing vehicle tires (22) arranged at the lower part of the pressurizing vehicle chassis (21) and a pressurizing vehicle cabin body (23) arranged at the upper part of the pressurizing vehicle chassis (21).

8. The nitrogen generation pressurization vehicle of claim 1, wherein: The pressurizing system comprises a primary gas-liquid separator (25), a secondary gas-liquid separator (26), a tertiary gas-liquid separator (27) and a quaternary gas-liquid separator (28) connected in sequence; the rear end of the quaternary gas-liquid separator (28) is connected with a reciprocating pressurizing machine (29); the reciprocating pressurizing machine (29) is powered by a pressurizing gas engine (210) connected therewith.

9. The nitrogen generation pressurization vehicle of claim 1, wherein: The cooling system comprises a high-pressure radiator (24) and an engine radiator (211) arranged at the rear end of the supercharged gas engine (210); the supercharged vehicle control system comprises a positive pressure explosion-proof control cabinet (212).

10. The nitrogen generation pressurization vehicle of claim 1, wherein: The pipeline system comprises a venting silencer (213) arranged at the rear end of the four-stage gas-liquid separator (28); the filtering system comprises a gas filtering system (214) arranged on the supercharged gas engine (210).

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