The invention discloses a small-passage air-liquid two-phase-flow flow measuring device and method based on a PVT method. The device is composed of a two-phase-flow control system and a two-phase-flow parameter measurement system. Two sets of temperature and pressure sensors are adopted in the parameter measurement system to conduct pressure and temperature measurement on the upstream position and the downstream position of a small passage; meanwhile, two sets of photoelectric sensors are used for measuring the two-phase-flow flow speed, and air-liquid two-phase-flow parameter signals are collected by an NI collecting module and are then input into a microcomputer. Measured parameters are processed, and then the flow of the various-phase fluid can be dissolved. The small-passage air-liquid two-phase-flow flow measuring device is good in stability and simple in structure, the higher detection accuracy is achieved, a new method is provided for small-passage two-phase-flow flow measuring, and the reference is provided for measuring other small-passage air-liquid two-phase-flow parameters.

Small-passage air-liquid two-phase-flow flow measuring device and method based on PVT method

The invention relates to a distributed energy resource waste heat utilization system which comprises a gas turbine generator set, a steam turbine generator set and a waste heat boiler The system is characterized in that an exhaust end of a gas turbine is communicated with a gas inlet end of the waste heat boiler, and a steam output end of the waste heat boiler is connected with a steam inlet end of a steam turbine, so that a gas turbine waste heat utilization loop is formed; a steam outlet end of the steam turbine is connected with a water inlet end of the waste heat boiler sequentially by a condenser and a water feed pump, so that a steam turbine waste heat utilization loop is formed; a hot water heat exchanger is arranged at the tail end of the waste heat boiler; a water outlet end of the hot water heat exchanger is connected with a water inlet end of a natural gas heating unit by a hot water supply mother pipe, and a water return end of the hot water heat exchanger is connected with a water outlet end of the natural gas heating unit by a hot water return mother pipe, so that a waste heat cyclic utilization loop of the gas turbine generator set and the steam turbine generator set can be formed The distributed energy resource waste heat utilization system can be used for solving the problems that a natural gas heating mechanism is high in energy consumption and poor in safety in the prior art, and has the beneficial effects of utilizing the flue gas of the waste heat boiler, reducing the system energy consumption and reducing the flue gas emission

Distributed energy resource waste heat utilization system

The invention belongs to the field of hydrate generation and conveying, and particularly relates to a natural gas hydrate pipeline transportation method and device. The natural gas hydrate pipeline transportation device comprises a hydrate generation unit and a hydrate transportation and separation unit. The natural gas hydrate pipeline transportation method comprises the steps of hydrate generation and hydrate transportation and separation. The pipeline jamming is avoided through the physical hydrate conveying method and other methods, and the natural gas hydrate pipeline transportation method and device are safe, reliable and high in feasibility; the economic applicability of combustible ice is also improved; the economic benefits are improved compared with traditional natural gas pipeline conveying; by the adoption of different treatment methods, the comprehensive utilization efficiency of the system is greatly improved, and convenience is provided for utilization of novel clean energy in twenty-first century.

Natural gas hydrate pipeline transportation method and device

The invention belongs to the technical field of peaking of natural gas storage and power grids, and particularly relates to a method and a device for joint peaking of a natural gas pipeline network and a power grid. An urban pipeline network and an urban power grid face the peaking problem each day because of the unbalance between supply and consumption of electric energy and natural gas, so the supply and demand balance of peak load shifting of the urban pipeline network and the urban power grid is realized by the joint peaking function of the natural gas and the power grid. The method has the advantage that the joint peaking of the natural gas pipeline network and the power grid is used for balancing the contradictions between the gas usage and the electricity usage as well as between the gas supply and the electricity supply.

Method and device for joint peaking of natural gas pipeline network and power grid

The invention discloses a method and a device realizing the cold energy utilization of liquefied natural gas (LNG) satellite stations, and belongs to technical fields of oil and gas storage and transportation and transportation engineering According to the method, LNG cold energy is utilized to freeze waste rubber, after the glass transition temperature of rubber is achieved, low-temperature grinding is performed, and refine processing of waste rubber can be satisfied The cold energy can be transferred through refrigerants during the technical process, air is served as cryogenic processing medium, coarse rubber particles are mixed with grinding aiding coal before cryogenic processing, and the refrigerants and the grinding aiding coal are circularly used, so that the whole technical process is realized The method has the advantages that the method is simple to operate and convenient to control, the automation degree is higher, not only is the cold energy of the LNG satellite stations is utilized, but also the refine processing of waste rubber is realized, and the requirement on the size of particles is satisfied on the premise that properties of rubber are not damaged

Method and device for realizing cold energy utilization of liquefied natural gas satellite stations

The invention provides a liquefaction peak regulation method and device utilizing pressure energy of a natural gas high-pressure pipe network. The liquefaction peak regulation method and device utilizing the pressure energy of the natural gas high-pressure pipe network includes that when gas utilization is at a low ebb, cooling capacity generated from differential pressure between pipe networks are fully applied to liquefied natural gas to be stored through an expansion machine and when the gas utilization is at a peak time, the liquefied natural gas is gasified to take a peak regulation function and cooling energy generated in the gasification of the liquefied natural gas is applied to a refrigeration house. The liquefaction peak regulation method and device utilizing the pressure energy of the natural gas high-pressure pipe network has the advantages of being capable of effectively recycling the pressure energy containing in the pipe network of the natural gas, having a very far-reaching impact on energy industries in our country and satisfying the requirement of peak regulation of urban gas due to the facts that the natural gas in our country is transported in a high-pressure pipeline transportation mode, pressure of the pipe network for transporting the natural gas is getting higher and higher along the progress of pipeline transportation technology, and large amount of pressure energy loss is generated in pressure regulation through a regulator station; improving the energy utilization rate; achieving economical efficiency of the pipe network operation; and solving the problem of peak regulation in a city.

Liquefaction peak regulation method and device utilizing pressure energy of natural gas high-pressure pipe network

At present, natural gas is transported mainly by long-distance pipeline transportation in China, but the long-distance pipeline transportation has the shortcomings of being immense in initial investment, high in pipeline pressure and low in safety factors. When natural gas is transported inside pipelines, constant pressing is needed, so that the pressure of the end of the pipelines and city gate stations can reach 30 Mpa. Accordingly, requirements of the pipeline are extremely high. As the time goes by, the rigidity and flexibility of the pipelines are reduced due to the facts that the pipelines are oxidized, corroded by water vapor and hydrogen sulfide in natural gas and abraded by mixed solid particles, so that potential risks and economic benefit of the pipelines are very challenging. The invention provides a natural gas transportation method and a device thereof based on hydrate technology, and the natural gas transportation is characterized by being high in transportation capacity, high in safety factors, low in preset requirements and cost, and applicable to middle and long-distance (1000 to 12000 km) natural gas transportation.

Natural gas transportation method and device thereof based on hydrate technology

With the development of the technology of natural gases, the natural gas pipeline transmission pressure is increasing A large amount of pressure energy is generated in a throttling and pressure regulating process of a high-pressure natural gas pipeline And most of the pressure energy not only is wasted, but also brings certain cold damage to the following pipeline devices Therefore, a peak pitching device based on the utilization of the pressure energy of the high pressure natural gas pipeline is developed by basing the utilization of the pressure energy of high-pressure natural gas as a starting point, combining the natural gas storage characteristic, and utilizing the pressure energy for generating electricity According to the peak pitching device based on the utilization of the pressure energy of the high pressure natural gas pipeline, the energy utilization rate is improved effectively, the economical pipeline running is achieved, and the peak pitching of urban pipelines and power grids is solved

Peak pitching method and device based on utilization of pressure energy of high-pressure natural gas pipeline

With rapid development of the economy and adjustment of the energy structure in China, natural gas serving as clean energy develops rapidly. When LNG is used as automotive fuel, the pollution to the atmosphere from automobile exhaust is largely reduced, and meanwhile a large amount of cold energy is generated when the LNG serves as fuel. Therefore, the utility model provides an LNG cold energy recycle device used for a car air conditioning system. The LNG cold energy recycle device used for the car air conditioning system comprehensively utilizes resources, improves energy utilization rate, is combined with the storage characteristics of the natural gas, uses cold energy produced by gasification of the LNG to the car air conditioning system, and meets the requirement for air-conditioning cooling capacity under different working conditions, such as car starting, steady-state operation and parking.

LNG cold energy recycle device used for car air conditioning system

The utility model relates to a skid-mounted cone combination device for measuring volume flow of saturated steam. The device comprises a flow regulating valve, a cone combination measuring module and a steam distributor. The cone combination measuring module comprises a temperature sensor, a pressure sensor, a large V-shaped cone flow sensor, a small V-shaped cone flow sensor, a differential pressure transmitter, a condensation tank, a data collection system, an algorithm controller and a computer terminal. The skid-mounted cone combination device is low in cost, safe, reliable, stable in operation, high in computing speed, and capable of achieving automatic distribution of the saturated steam and accurate measurement of the volume flow.

Skid-mounted cone combination device for measuring volume flow of saturated steam

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