39 results about "Compressed natural gas" patented technology

This disclosure presents a method for dispensing compressible fluids, specifically natural gas, using a heat exchanger to optimize temperature and pressure conditions. The process involves receiving a first supply stream at an initial temperature and expanding a second supply stream to a lower pressure. Heat is exchanged between these streams within the heat exchanger, reducing the temperature of the first stream for efficient dispensing. This method is particularly suited for filling compressed natural gas (CNG) tanks, ensuring continuous operation without interruptions. The system maintains the first stream's pressure below 4,500 psig and achieves a target density based on reference conditions. Additionally, the method supports integration with natural gas pipelines, maintaining suitable discharge temperatures. The approach enhances energy efficiency by eliminating the need for auxiliary refrigeration, making it ideal for onsite wellhead applications. This innovative system offers a streamlined solution for CNG operations, promoting economic and environmental benefits.

The utility model provides an efficient gas-liquid separator of a large-flow CNG (compressed natural gas) pressure regulating device, which comprises a lower shell, an upper shell is arranged at the top of the lower shell, a gas outlet pipe is fixedly communicated with the top of the upper shell, and a gas guide pipe communicated with the gas outlet pipe is fixedly connected below the gas outlet pipe in the upper shell; the dismounting mechanism is used for connecting the lower shell and the upper shell; a dismounting and mounting mechanism is arranged, the upper shell and the lower shell are connected under the action of a flange through mutual cooperation of a connecting hole and a fixing bolt, dismounting and mounting are convenient, the opening and closing state cannot be easily changed, under mutual cooperation of a sealing groove and a sealing ring, the air tightness between the upper shell and the lower shell is improved, a fixing plate is fixed to the needed position, and the sealing effect is good. And the lower shell is inserted into the mounting ring, so that the lower shell can be limited, the lower shell is prevented from shaking and inclining, the disassembly and assembly are convenient, and the sealing performance is good.

The utility model relates to the technical field of natural gas production, in particular to a front-mounted high-pressure rear-mounted dehydration device for compressed natural gas, and aims to solve the technical problems that after a molecular sieve of a dehydration device absorbs water, long-time reduction dehydration is needed, dehydration operation cannot be carried out in the period, and the production time is wasted. Comprising a normal-pressure gas inlet pipe, a compressor, a multi-way valve, a high-pressure gas inlet pipe, a dehydration tank, a molecular sieve, a valve pipe, a high-pressure exhaust ring, a high-pressure exhaust pipe and a molecular sieve reduction mechanism, normal-pressure natural gas is compressed and injected into the dehydration tank through the compressor, the natural gas penetrates through the molecular sieve and is exhausted through the valve pipe, and dehydration is completed; the controller controls the multi-way valve to switch the gas transmission dehydration tank, close the valve pipe of the previous dehydration tank and open the valve pipe of the new dehydration tank, the dehydration operation is continued in this way, and the molecular sieve in the previous dehydration tank is controlled by the controller to be subjected to dehydration reduction by the molecular sieve reduction mechanism to wait for the next dehydration operation, so that continuous dehydration is realized, and the production time is not wasted.

The invention provides a CNG continuous gas discharging device and method for a point supply station, and relates to the technical field of compressed natural gas supply stations, three gas discharging column pipelines are arranged in parallel, and each gas discharging column pipeline is provided with a pressure sensor; two independent pressure reducing pipelines are arranged in the pressure reducing pry, and the input end of the pressure reducing pry is connected with the output ends of the three gas discharging column pipelines; the outlet flow meter is arranged on the downstream pipe network; the controller is electrically connected with the outlet flow meter, the pressure sensors and the regulating valves on the gas discharging column pipelines; according to the device, the first gas discharge column pipeline, the second gas discharge column pipeline and the third gas discharge column pipeline which are connected in parallel and are communicated with one another are arranged, and the first parallel pipeline and the second parallel pipeline are matched to realize three-path gas source intercommunication, so that the problem that gas supply is still possibly interrupted during switching due to dependence on limited-capacity gas storage tube bundles in comparison files is solved; and the continuous and uninterrupted gas supply effect of multi-vehicle cooperation and mutual standby is achieved.

The invention discloses a natural gas and compressed air collaborative energy storage system and method for multi-type underground spaces. According to the system, first underground gas storage spaces and second underground gas storage spaces are distributed at intervals; the outlet end of the compressor is connected with the upper end of the first compressed air injection well through a heat exchanger cold side channel. The first air pump is connected with the upper end of the first compressed air recovery well and connected with the inlet end of the expansion machine through a heat exchanger hot side channel. The outlet end of the natural gas compressor connected with the overground gas storage is connected with the natural gas injection well I through an electric control valve; a gas inlet of the overground gas storage is connected with the upper end of the first natural gas recovery well through a second gas pump. The turbine generator is connected with the overground gas storage through a third gas pump and meanwhile connected with the heat exchanger. The method comprises the following steps: in an energy excess period, adopting a strategy of preferentially compressing air energy storage or preferentially compressing natural gas energy storage or alternately storing the compressed air energy storage and the natural gas energy storage at intervals, and in an energy shortage period, adopting a strategy of preferentially generating power or preferentially supplying gas or generating power and simultaneously utilizing natural gas for afterburning and improving efficiency. According to the invention, efficient utilization of energy can be realized.

The utility model discloses a connector for testing a compressed natural gas bottle, which comprises a compressed natural gas bottle body and a connector body which is in threaded connection with the interior of the upper end of the compressed natural gas bottle body and is used for detection, the left end of the connector body is in threaded connection with a first conversion connector, and the right end of the connector body is in threaded connection with a second conversion connector; a long pipe is integrally connected to the lower left end of the connector body, a notch is formed in the lower right end of the connector body, a lifting assembly capable of being limited is arranged on the upper side of the connector body, and the lifting assembly comprises a lifting ring, a threaded rod, a limiting plate, a limiting hole and a lifting hook. Connecting plates are fixedly connected to the upper end of the connector body in a front-back symmetrical mode, mounting blocks are connected to the outer ends of the connecting plates in an embedded mode, and waterproof springs are fixedly connected into the mounting blocks. The connector for testing the compressed natural gas cylinder is convenient to install and prevents falling off during testing, the tested gas cylinder can be conveniently hoisted, falling off during hoisting is prevented, and meanwhile hidden dangers during water injection are prevented.

The present invention relates to a catalytic material for treating an exhaust gas produced by a natural gas engine, which catalytic material comprises a molecular sieve and a platinum group metal (PGM) supported on the molecular sieve, wherein the molecular sieve has a framework comprising silicon, oxygen and germanium, and has a content of heteroatom T-atoms of ≤about 0.20 mol %, wherein the germanium is present in an amount of from 15 to 20 mol %. The present invention further relates to a catalyst article and a compressed natural gas combustion and exhaust system.

The present invention relates to a cylinder valve for compressed natural gas cylinder with integrated pressure reducing function, which is connected to a general burner in a plug and play manner. The cylinder gas of the present invention is improved to increase the safety of gas use and to make it easier to adjust the required gas flow rate. The cylinder valve comprises a first part as an improved part, a second part as a main part directly connected to compressed natural gas, and a third part as an evaporator part. The second part contains a diaphragm in order to accelerate the gas flow, and the third part is an evaporator which is used to overcome the clogging by accelerating the evaporation of the clogging formed due to the cooling caused by the pressure drop.

This invention provides a catalytic article useful for treating exhaust gas emissions from compressed natural gas (CNG) engines. [Solution] A three-way catalytic converter article and its use in an exhaust system for a compressed natural gas engine are disclosed. A catalytic converter article for treating exhaust gas from a compressed natural gas (CNG) engine, comprising: a base material having an axial length L and including an inlet end and an outlet end; a first catalytic region beginning at the outlet end and extending over less than the axial length L, comprising a first PGM component; and a second catalytic region beginning at the inlet end and comprising a second PGM component, wherein the first PGM component comprises palladium, platinum, or a combination thereof, and the second PGM component comprises rhodium.

The utility model relates to the technical field of natural gas production, in particular to a special heating device for a compressed natural gas decompression pry, and aims to solve the technical problem that waste heat is remained in preheated and decompressed natural gas, and energy waste is inevitably caused by direct discharge of the waste heat. The tail end of the first spiral gas conveying pipe is communicated with a second spiral gas conveying pipe through an elbow, the first spiral gas conveying pipe and the second spiral gas conveying pipe are the same in diameter, screw pitch, spiral starting position and spiral ending position and are connected to the inner wall of the heating chamber, and the upper end of the second spiral gas conveying pipe is communicated with a spiral exhaust pipe through a pressure reducing valve. The spiral exhaust pipe is spirally wound on the gas inlet pipe, the gas conveying pipe is of a double-spiral structure, compared with a single-spiral gas conveying pipe, on the premise that the pipe length is the same, the preheating effect of the double-spiral gas conveying pipe is better than that of the single-spiral gas conveying pipe, and waste heat of natural gas is conducted to the gas inlet pipe outside a medium through the spiral exhaust pipe for preheating and waste heat recovery.

An apparatus and a method are provided for a compressed natural gas fuel system configured to replace a motor vehicle's fuel system comprising a storage assembly comprising an enclosure, wherein the enclosure contains a plurality of tanks configured to contain compressed natural gas; and a chassis disposed within the enclosure and configured to retain the plurality of tanks, wherein the storage assembly is configured to be mounted to the roof of a motor vehicle.

The application provides a lubricating oil composition for a gas engine, an additive mother liquor, an oil change cycle determination method and a gas engine system comprising the same, and relates to the technical field of lubricating oil.The additive mother liquor takes a III type base oil or a poly-alpha-olefin base oil as a carrier, and comprises a detergent, a dispersant, an anti-wear and extreme pressure agent, an antioxidant, a rust-preventing and corrosion-inhibiting agent, an ash-free friction modifier, a defoaming agent and an auxiliary additive.The additive mother liquor of the application can significantly improve the oxidation resistance and nitration resistance of the lubricating oil, effectively control high-temperature deposition, wear and corrosion when being applied to the lubricating oil for the gas engine through the synergistic compounding of the above-mentioned raw materials.Meanwhile, the lubricating oil composition for the gas engine of the application is suitable for compressed natural gas, liquefied natural gas, biogas, landfill gas or hydrogen-doped compressed natural gas engines and fixed gas power generating sets.

The invention relates to the technical field of automobiles, in particular to an intelligent vehicle-mounted LNG (Liquefied Natural Gas) and CNG (Compressed Natural Gas) multi-path electromagnetic valve monitoring system and method. The method comprises the following steps: extracting electrical characteristics and spectral characteristics representing electromagnetic valve response from multi-channel synchronous time sequence data, and fusing temperature parameters to form a high-dimensional feature vector; inputting the high-dimensional feature vector into a lightweight Transform-CNN (Convolutional Neural Network) hybrid network model to obtain the confidence coefficient of the state of the valve body; and performing fault early warning decision based on the confidence coefficient of the valve body state, uploading vehicle end operation data and a decision result to a cloud platform through a federated learning framework to trigger global incremental updating of the hybrid network model, issuing updated model parameters to the vehicle end to complete self-evolution, and establishing a'data-model-reasoning-decision 'closed loop to complete self-evolution of the hybrid network model. Accurate monitoring and intelligent early warning of the state of the vehicle-mounted LNG and CNG multi-way electromagnetic valve are achieved.

The application provides a gas-based reduction method, a gas-based reduction system and application of a particulate iron ore, and relates to the technical field of smelting. The gas-based reduction method does not need pure oxygen or high-calorific-value gas, and uses natural gas as a raw material. Compressed natural gas is converted into hydrogen-rich gas through desulfurization, steam reforming, shift reaction, first dehydration treatment and first CO2 removal treatment. The hydrogen-rich gas is preheated and countercurrently contacted with particulate iron ore of a specific particle size and at a specific preheating temperature to perform a reduction reaction, so as to obtain particulate direct reduced iron. Since the particle size of the particulate iron ore is small, the reduction reaction speed at the same temperature is faster than that of a traditional pellet, and other binders and a sintering process are not needed, so that pollution is greatly reduced. Meanwhile, the particulate iron ore at the specific preheating temperature is directly subjected to the reduction reaction with the hydrogen-rich gas, and the reduction reaction at low temperature is realized by using the heat of the particulate iron ore and the hydrogen-rich gas.

A method and apparatus for capturing natural gas at the wellhead and enhancing production and efficiency, comprising a suction pressure regulator to control annular pressure on the wellhead, a suction scrubber to receive natural gas and allow condensation or fluid within the gas stream from the annulus to accumulate before entering a compressor, a compressor, a power source, a bypass pressure regulator, a discharge pressure regulator and a discharge scrubber. The compression system compresses natural gas from the well until the operating pressure set by the discharge pressure regulator is achieved and the pump is activated. The bypass pressure regulator allows natural gas to circulate from the discharge side to the suction side until a sufficient volume is achieved to charge the system at an appropriate operating pressure. Then, the pump delivers fluid from the well into a flow line, which goes to a separator / tank facility for normal processing.

The utility model relates to compressed natural gas storage well leak detection device technical field discloses a compressed natural gas storage well leak detection device, including detection device main part, both sides of detection device main part all are fixedly installed with antiskid pad, one side fixed mounting of detection device main part front -end has the movable shaft, one side outer surface movable joint of movable shaft has the protective door, when using this device, can through the second protection structure that the sliding cover and the connecting groove of setting avoided the detection head in non -use state to expose in dust or mechanical impact environment, adopts the arc clamping piece cooperation reset spring and the protective soft pad, when the storage state, automatic fixed detection head, prevents the connection line winding, avoids the probe surface wear and tear again, antiskid push pad design makes the sliding cover operation more convenient, can reduce the risk of skidding in the process of opening and closing simultaneously, can bring better use prospect.

A kind of surplus energy power generation system for natural gas distribution pressurizing station, system includes: natural gas compression subsystem for providing compressed natural gas, its inlet is the natural gas inlet of system, i.e. upstream natural gas, its outlet is compressed high pressure natural gas, continue to be transported to remote city;Natural gas expansion subsystem for providing medium pressure natural gas and low pressure natural gas, its inlet is the natural gas inlet of system, i.e. upstream natural gas, its outlet is expanded medium pressure natural gas and low pressure natural gas, respectively transported to peripheral remote and peripheral close city;Organic rankine cycle subsystem, with the hot gas stream of the compressed natural gas output as heat inlet, carries out power generation.The present application can provide pressure suitable natural gas for close, medium, remote three places respectively, and effectively utilize the waste heat when natural gas distribution pressurizes, improve system energy utilization rate, make the whole system energy maximization utilization, reduce the consumption of fossil fuel and greenhouse gas, pollution gas emission.

The utility model provides an automotive combination valve for a compressed natural gas bottle, which relates to the technical field of gas valves and comprises a valve body, a manual cut-off component arranged on one side of the valve body, an electromagnetic valve switch component arranged on the other side of the valve body and a temperature protection component arranged on one side of the valve body. The combined gas valve is installed on a compressed natural gas cylinder, the problem that a gas storage cylinder of a natural gas energy automobile is inconvenient to operate is effectively solved, the electromagnetic valve switch assembly is controlled by an automobile ECU computer board, a pipeline is automatically closed to supply gas when power is off, potential safety hazards caused by leakage or other factors are avoided, and the gas storage cylinder is safe and reliable. The double-insurance temperature and pressure relief device is arranged on the valve body, so that gas in the gas storage bottle is safer to use, when the temperature exceeds a designed value, fusible alloy in the temperature relief device is molten, gas in the gas storage bottle is quickly released, and when the pressure exceeds a set value, a safety disc in the relief valve is opened, the relief valve is opened, and the gas in the gas storage bottle is quickly released. And emergency pressure relief of gas in the gas storage bottle is realized.

Methods and systems are provided for a modular compressed natural gas (CNG) refueling station. The modular CNG refueling station modules include a control station skid, an interface module, and a compressor skid. The compressor skid includes a refueling station for a compressed natural gas (CNG) vehicle. Each of the modular CNG refueling station modules is configured as a fully wired, plug-and-play station module. The control station module, interface module, and compressor module are each pre-installed with electrical connections to allow the CNG station to be portable and easily installed above ground at a utility site.

The invention discloses a compressed natural gas dryer, and relates to the technical field of natural gas treatment.The compressed natural gas dryer comprises a support, a gas conveying pipe is installed on the support, a heat pipe mechanism and a condensation mechanism are further arranged on the support, one end of the gas conveying pipe is connected with a water removal mechanism, and the condensation mechanism comprises an evaporation box fixedly installed on the support; a condensation box is fixedly installed above the evaporation box, a snakelike circulating pipe communicated with the condensation box is further arranged above the evaporation box, heat dissipation fins are further fixedly installed between the evaporation box and the condensation box, a water inlet pipe and a flow guide pipe which are connected with a water removal mechanism are arranged on the evaporation box and the condensation box respectively, and an air conveying pipe is composed of a horizontal end and a vertical end. Through the design of the horizontal end and the vertical end of the gas conveying pipe, heat absorption of the heat conducting plate of the evaporation section and cooling medium circulation of the snakelike circulating pipe, a dual-condensation mechanism is formed, the natural gas cooling efficiency is improved, sufficient condensation of water vapor is ensured, and the problem that condensation of a traditional device is not thorough is solved.

1. Name of the product in this design: Natural Gas Regulator. 2. Purpose of this design: For pressure reduction and regulation of compressed natural gas. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to a buried compressed natural gas storage well which comprises a ground main body, a gas storage well assembly and an equipment box, and the gas storage well assembly and the equipment box are arranged on the ground main body. According to the buried compressed natural gas storage well, the circulating cooling mechanism is arranged, cooling water in the water storage tank is pumped into the U-shaped heat exchange pipe in the cooling chamber through the first water pressure pump, and then the cooling water in the U-shaped heat exchange pipe is refrigerated through low-temperature gas generated by the refrigerating machine; the cooled cooling water enters the refrigeration cavity again, the cooling mode can effectively avoid the situation that the pressure in the tank is increased due to heating of natural gas in the inner tank, finally, a water return pipe and a second water pressure pump are arranged, the cooling water losing the cooling effect can flow back into the water storage tank again, and then the recycling effect is achieved; according to the design, water resources are effectively saved, meanwhile, environmental pollution is reduced, the operation cost is reduced, and the practicability is high.

The present application relates to a kind of compressed natural gas filling station intelligent risk assessment method;Including the following construction steps: step 1 constructs wedge wave multi-core support vector machine;Step 2 determines the improved locust algorithm optimization optimization wedge wave support vector machine;Step 3 determines the risk assessment index system of compressed natural gas filling station;Step 4 gathers and is related to the data of compressed natural gas filling station risk index system and determines input sample data using expert evaluation method and questionnaire method.Step 5 the risk level of compressed natural gas filling station is divided into five grades and risk grade is used as the output sample data of evaluation model.Step 6 collects the risk assessment data of compressed natural gas filling station and determines training sample and test sample;Step 7 uses training data sample to train evaluation model and uses the evaluation model after training to evaluate the risk level of compressed natural gas filling station to be evaluated.The above-mentioned petrochemical enterprise refining unit energy management system optimization method is constructed.This application can improve the precision and efficiency of compressed natural gas filling station risk assessment, and then can improve the safety management level of compressed natural gas filling station.

The present invention relates to a compressed natural gas combustion and exhaust system comprising: (i) a natural gas combustion engine; and (ii) an exhaust treatment system comprising an inlet for receiving exhaust gas from the combustion engine and a catalytic article arranged to receive and treat the exhaust gas, the catalytic article comprising a substrate having at least a first coating and a second coating, the first coating being free of platinum group metals and comprising a copper-containing zeolite having a CHA framework type, and the second coating comprising a palladium-containing zeolite, the first coating being arranged to contact the exhaust gas prior to the second coating. The present invention further relates to methods and uses.

The utility model relates to the technical field of natural gas storage peak shaving, in particular to a biogas and natural gas combined peak shaving system. Comprising a biogas module, a natural gas module, a compressed natural gas module and a mixed gas module, the biogas module comprises a biogas conveying pipeline and a first three-way pipe valve, the natural gas module comprises a natural gas conveying pipeline and a second three-way pipe valve, and the compressed natural gas module comprises a compressed gas conveying pipeline, a compressor and a gas storage tank; the leading-out end of the first three-way pipe valve is connected with a generator, the generator is electrically connected with the compressor, the leading-out end of the second three-way pipe valve is in butt joint with the compressor, the mixed gas module comprises a mixing tank and a mixed transportation pipeline, and the mixed transportation pipeline is in butt joint with an urban pipe network. And the biological natural gas conveying pipeline, the natural gas conveying pipeline and the compressed gas conveying pipeline are respectively butted with the mixing tank. Through combined peak regulation of biological natural gas and natural gas, the problem of natural gas source shortage in part of areas can be effectively relieved.

The utility model belongs to the technical field of natural gas purification devices, and particularly relates to a compressed natural gas purification device which comprises a natural gas compressor, and a purification mechanism is fixedly mounted on the left side of the natural gas compressor; the purification mechanism comprises a main pipe, the right end of the main pipe communicates with the left side of the natural gas compressor, the outer surface of the main pipe communicates with a flow dividing assembly, the flow dividing assembly comprises a flow dividing pipe, a valve is fixedly installed on the outer surface of the flow dividing pipe, a filter box is fixedly installed on the outer surface of the flow dividing pipe, and a sealing rubber sleeve is fixedly installed on the inner surface of the filter box. The left end of the shunt pipe communicates with an air inlet pipe. According to the compressed natural gas purification device, natural gas enters the two flow dividing pipes through the gas inlet pipe, then enters the purification filter element in the filter box and is filtered by the filter block in the purification filter element for multiple times, and mercury and heavy hydrocarbon in the natural gas are accumulated in the filter block and accumulated in the storage box below the filter block through gravity; and the purified natural gas is gathered in the main pipe.

This invention relates to the cylinder valve that integrated with the pressure reducing function for using compressed natural gas cylinders by plug and play for connecting to burner in general. The cylinder gas of this invention is modified so as to increase safety in ingestion and make it easier regulate the required gas flow speed. The cylinder valve is included the first part as a modification part, the second part as a main part which is directly connected to the compressed natural gas, and the third part as an evaporator part. The second part is contained a membrane so that it can speed up gas flow, while the third part is an evaporator which functions to overcome blockages by speeding up the evaporation of blockages formed due to cooling that occurs due to pressure drops.

1. The name of the design product: gas filling machine (TCE-JQJ-30-2). 2. The use of the design product: the design product is used for compressed natural gas filling machine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.