2453results about "Piston pumps" patented technology

An electrical feedthrough includes a base body with a sealing region, at least one opening and an electrical conductor fed through the opening, wherein the conductor is held in the opening by a fixing material and the fixing material seals the opening. The edges which surround the opening are designed to be sharp and all edges of an outer contour of the base body are provided with a chamfer or a rounding, which has a size or a radius r in the range of 0.3 mm to 2 mm.

A valve structure A of an accumulator sprayer X provided with a cylinder body portion B having a main cylinder portion B1 and a sub-cylinder portion B2, and a cover portion C that is attached to cover the cylinder body portion B, wherein; the accumulator sprayer X sucks up liquid in a container J through a first valve FV to the main cylinder portion B1, pressurizes the liquid and spraying the liquid from a nozzle portion F when the pressure of the liquid reaches a certain pressure; and the valve structure A comprises a spring portion and a valve piston portion, wherein the valve piston portion is provided with a spring attaching portion, the spring portion is attached to the spring attaching portion, the spring portion presses the valve piston portion in vertical direction, and the spring portion has higher rigidity than the valve piston portion.

The invention discloses a high-pressure combustion combined heat and power generation energy storage system and method for hydrogen and oxygen production through electrolysis, and relates to the field of hydrogen energy storage. After the electrolytic cell produces high-pressure hydrogen and oxygen, the high-pressure hydrogen and oxygen are stored in the hydrogen / oxygen storage tank, the system can operate in a hydrogen / oxygen mode, and in the oxygen mode operation, the hydrogen and oxygen steam mixed gas from the oxygen storage tank and the hydrogen / oxygen evaporation compressor are combusted in the high-pressure combustion chamber to generate superheated steam, and then the superheated steam enters the expansion turbine to do work; due to excessive oxygen, dead steam after acting is separated into two working media through a gas-liquid separator, that is, gas enters a cooler to be cooled and then returns to a combustion chamber through a hydrogen / oxygen evaporation compressor, drainage water generated after liquid enters a heat supply heat exchanger is pressurized through a water pump and then enters a high-temperature combustion chamber, and therefore clean utilization of hydrogen energy and cyclic regeneration of the working media are achieved. The system can realize high power generation efficiency and excellent environmental protection performance, and is suitable for regions requiring stable consumption of fluctuating renewable energy sources, power and heat supply and the like.

The reciprocating compressor comprises a compressor frame, a crankshaft and a connecting rod, connecting the crankshaft to a crosshead. A piston rod connects a piston to the crosshead. The piston reciprocates in a gas compression cylinder. At least one pressure-drop module is positioned between the gas compression cylinder and a crosspiece guide. The piston rod extends from the gas compression cylinder through a pressure-drop chamber of the pressure-drop module. Also disclosed herein is a method of operating a reciprocating compressor.

A foam dispenser having a foam generator that is moveable within a foam generation chamber, and a pump mechanism that generates a positive pressure differential across the foam generation chamber during a discharge phase and a negative pressure differential across the foam generation chamber during a resupply phase. During the discharge phase, the positive pressure differential forces the foam generator into a first position, and forces foamable liquid and air to pass through the foam generator to generate foam. During the resupply phase, the negative pressure differential forces the foam generator into a second position, and atmospheric air is drawn into the foam dispenser without passing through the foam generator.

A system and method for operating a fleet of pumps for a turbine driven fracturing pump system used in hydraulic fracturing is disclosed. A method of operating a fleet of pumps associated with a hydraulic fracturing system includes receiving a demand Hydraulic Horse Power (HHP) signal. The demand HHP signal may include the Horse Power (HP) required for the hydraulic fracturing system to operate and may include consideration for frictional and other losses. The method further includes operating all available pump units at a percentage of rating below Maximum Continuous Power (MCP) level, based on the demand HHP signal. Furthermore, the method may include receiving a signal for loss of power from one or more pump units. The method further includes operating one or more units at MCP level and operating one or more units at Maximum Intermittent Power (MIP) level to meet the demand HHP signal.

The invention relates to the technical field of heavy oil reservoir exploitation, in particular to a device and a method for realizing viscosity-reducing huff-puff exploitation of heavy oil by injecting natural gas into a well and pressurizing. According to the technical scheme, a gas supply pipeline is tripped into an annular space between a sleeve and a pump cylinder, the upper end of the gas supply pipeline is connected with a natural gas injection device on the ground, and the lower end of the gas supply pipeline is communicated with a gas inlet of an underground natural gas booster pump; a gas injection packer is installed on the lower middle side of a pump cylinder, an oil inlet hole is formed in the pipe wall of the lower side of the gas injection packer, and the lower end of the gas injection packer is connected with an underground natural gas booster pump through a transition adapter. The device has the advantages that the pressure of natural gas can be increased in a relay mode, the natural gas is dynamically mixed and dissolved in thickened oil, the viscosity of the natural gas is remarkably reduced, the natural gas is increased along with volume expansion, flowing to a shaft is facilitated, in addition, the foam oil effect can be formed, and the functions of reducing viscosity and increasing yield of a thickened oil reservoir are achieved; and the total operation cost is lower than the steam thermal recovery cost, and the safety is also greatly improved.

The utility model provides a transmission mechanism of an air compressor, and belongs to the technical field of air compressors. The technical problem that the temperature in an existing crankcase is prone to rising is solved. A transmission mechanism of an air compressor comprises a crankcase internally provided with a containing cavity, a driving motor is fixedly connected to the crankcase, the driving motor comprises a motor shaft, one end of the motor shaft extends into the containing cavity, air cylinders are fixedly arranged on the two sides, perpendicular to the driving motor, of the crankcase respectively, two eccentric wheels are fixedly connected to the motor shaft, and the two eccentric wheels are fixedly connected to the crankshaft. The two eccentric wheels are fixedly sleeved with bearings respectively, the two bearings are fixedly sleeved with connecting rods respectively, the ends, away from the motor shaft, of the connecting rods are fixedly connected with pistons, and the pistons are located in the air cylinder. The air compressor is fast in heat dissipation and high in efficiency.

The invention discloses a volume type hydrogen compressor cylinder body structure and a hydrogen compressor system, and belongs to the technical field of compressors, the compressor system comprises the cylinder body structure, the cylinder body structure comprises a cylinder body, piston assemblies and a piston rod, and the piston assemblies comprise the first piston assembly and the second piston assembly; each of the first piston assembly and the second piston assembly comprises a piston ring and a guide ring; an air guide hole is formed in the piston rod, an annular groove is formed between the first piston assembly and the second piston assembly, and one end of the air guide hole communicates with the annular groove; the pressure sampling device further comprises a pressure sampling cylinder, a cavity is formed in the pressure sampling cylinder, and when the piston assembly is in the gas compression stroke, the other end of the gas guide hole is communicated with the cavity. And the pressure sensor is used for measuring the pressure in the cavity. According to the structural design provided by the scheme, online monitoring of the sealing condition of the piston assembly and the air cylinder wall can be achieved, and compared with technologies based on vibration monitoring, sound wave monitoring and the like, adverse effects of the data extraction and analysis process on the monitoring result can be avoided.

A device for compressing a medium is equipped with a compressor unit (2) for compressing a drive medium and with a pressure intensifier (13) operatively connected to the compressor unit, in which a drive piston (15) driven by the drive medium and a high-pressure piston (18a, 18b) cooperating with the drive piston (15) for compressing the medium to be compressed is arranged. According to the invention, hydrogen is used as the drive medium, and the compressor unit (2) comprises a hydrogen storage system (3a, 3b) which has a pressure vessel (4a, 4b) equipped with a metal hydride storage medium (7a, 7b) with at least one supply line (5a, 5b, 6a, 6b) for supplying and / or removing hydrogen into or from the pressure vessel (4a, 4b) and a heating device (8a, 8b) for heating the metal hydride storage medium (7a, 7b) in the pressure vessel (4a, 4b).

A compressor includes a housing, a first compression mechanism and a second compression mechanism disposed in the housing, and a housing cover fixed to the housing. Both the first compression mechanism and the second compression mechanism are configured to compress a working fluid from a suction pressure to a discharge pressure. The first compression mechanism includes a first cylinder housing having a first fluid storage plenum. The second compression mechanism includes a second cylinder housing having a second fluid storage plenum. The housing cover defines an intermediate-fluid port in fluid communication with the first fluid storage plenum via a first intermediate-fluid passage and the second fluid storage plenum via a second intermediate-fluid passage. Working fluid at an intermediate pressure enters the intermediate-fluid port. The intermediate pressure is greater than the suction pressure and less than the discharge pressure.

The invention discloses a hydraulic system for preventing reversing cutoff of a cone valve type filling industrial pump. The hydraulic system comprises a first oil pump set, a second oil pump set, a main oil cylinder set, a first pressure valve suction valve oil cylinder set, a second pressure valve suction valve oil cylinder set, a reversing valve set and a pipeline. The first oil pump set is composed of a first oil pump, a second oil pump and a first constant-pressure oil pump set. The second oil pump set is composed of a third oil pump, a fourth oil pump and a second constant-pressure oil pump set. The first pressure valve suction valve oil cylinder set comprises a first pressure valve oil cylinder and a first suction valve oil cylinder, and the second pressure valve suction valve oil cylinder set comprises a second pressure valve oil cylinder and a second suction valve oil cylinder. The reversing valve group comprises first to sixth reversing valves. According to the reversing cutoff prevention hydraulic system of the cone valve type filling industrial pump, through unique structural design and assembly configuration, the cutoff problem in the reversing process is effectively solved, continuous and stable operation of the system is ensured, and the working efficiency and reliability of the industrial pump are improved.

The invention relates to the technical field of switch cabinets, in particular to a power distribution intelligent alternating-current high-voltage switch cabinet capable of preventing electric arc overflow, which comprises a cabinet body, and a bracket and a fixed plate which are fixed in the cabinet body, and is characterized in that an electric control structure is arranged on the bracket; the pump air cylinder is fixed on the fixing plate, and an air storage tank is fixed on the pump air cylinder; the first piston disc is connected into the pump air cylinder in a sliding and sealing mode, the first piston disc is connected with a second piston disc in a sliding and sealing mode, the second piston disc is connected with the inner wall of the pump air cylinder in a sliding and sealing mode, a high-pressure cavity is formed between the first piston disc and the pump air cylinder and between the second piston disc and the pump air cylinder, and a conduction switching mechanism is arranged on the pump air cylinder; according to the invention, when the current fluctuates, the position of the first piston disc can be constrained, when the current exceeds a set value, the constraint on the first piston disc is relieved, and meanwhile, under the action of the energy storage triggering mechanism, high-voltage arc extinguishing gas is quickly sprayed to an arc area so as to execute efficient arc extinguishing action.

An electric compressor includes a housing, refrigerant inlet port, a refrigerant outlet port, an inverter section, a motor section, a compression device and a front cover. The housing defines an intake volume and a discharge volume. The refrigerant inlet port is coupled to the housing and is configured to introduce the refrigerant to the intake volume. The compression device is a compression device configured to compress the refrigerant. The refrigerant outlet port is coupled to the housing and is configured to allow compressed refrigerant to exit the electric compressor from the discharge volume.

A high-pressure hydraulic fracturing pump. The pump is in-line in orientation, with a static section having a high-pressure discharge chamber and a dynamic section having a dynamic internal bore threaded to the static section. A fluid routing plug is disposed within a bore which includes the dynamic internal bore. The pump is designed for ease of access and for reducing wear. Large, external threads on the dynamic section pair with internal threads on the static section to reduce wear associated with repeated pressurization of hydraulic fracturing fluid found within the pump. Seals and wear rings are found at a nose of the dynamic section to further prevent wear and damage.

The invention discloses a motor, a compressor and refrigeration equipment, and relates to the technical field of refrigeration equipment, stator slots comprise a first stator slot and a second stator slot, the cross section area of the first stator slot is larger than that of the second stator slot, the maximum radius of the outer periphery of a stator punching sheet is R1, and the maximum radius of the outer periphery of the stator punching sheet is R2; the maximum distance between the groove wall of the first stator groove and the circle center of the stator punching sheet is R0, the length of the stator iron core in the axial direction is h, the elastic modulus of the stator iron core is E, the density of the stator iron core is rho, the Poisson ratio of the stator iron core is v, and the condition that the * is larger than or equal to 3000Hz and smaller than or equal to 5000Hz is met. According to the technical scheme provided by the invention, the rigidity of the stator is improved, and the electromagnetic noise of the motor is reduced.

The utility model relates to the technical field of air compressors, in particular to a direct-drive piston type air compressor, which is characterized in that a reciprocating component is arranged in a main body, a power mechanism is fixedly arranged at the side end of the main body, an output shaft is arranged on the power mechanism, the output shaft extends into the main body and is in transmission connection with the reciprocating component, and a cylinder body is arranged at the other end of the main body. A compression cavity is formed in the cylinder body, the piston is movably arranged in the compression cavity, a transmission shaft is arranged on the piston, the transmission shaft extends into the main body and is in transmission connection with the reciprocating assembly, the cylinder body is further provided with an air inlet and an air outlet which are communicated with the compression cavity, and the air outlet is communicated with an air outlet valve. The reciprocating assembly is driven by the power mechanism so as to drive the piston to do reciprocating motion, gas in the compression cavity is compressed through the piston, the gas is discharged from the gas outlet and led to the gas outlet valve, finally, the gas can be discharged from the gas outlet valve, the control mode is simple and reliable, and the driving efficiency of the piston is effectively improved.

A high-pressure water pump based on water or aqueous solution lubrication comprises a water pump water inlet, a hydraulic cylinder body, a shell, a plunger cavity, a plunger and a driving mechanism. A communicating flow channel for supplying water to the water inlet one-way valve is arranged between the accommodating space and the water inlet one-way valve; water or a water solution flows through the containing space through the water inlet of the water pump and then flows to the water inlet one-way valve through the communicating flow channel to achieve water supply of the water pump. According to the utility model, the movement mechanism in the accommodating space is fully cooled and lubricated. By means of the special design of the communication flow channel from the containing space to the hydraulic cylinder body and the communication flow channel with the specific size and shape such as small holes or slits, the flowing resistance of water or aqueous solution is increased, and therefore the influence on pumping of the water or aqueous solution due to flow field turbulence is reduced, high-pressure water can be stably output, and the pumping efficiency of the water or aqueous solution is improved. Operation noise of the water pump is reduced, and working stability of the water pump is improved.

The invention relates to the field of air compressors, in particular to a vehicle-mounted two-stage compression air compressor structure. The air compressor comprises an air compressor body, a motor, an oil groove and two lubricating mechanisms. The air compressor body comprises a shell, a cylinder arranged at the top of the shell and provided with two sliding ways distributed side by side, two piston barrels arranged in the two sliding ways in a sliding mode respectively, mounting shafts arranged in the piston barrels, a crankshaft rotationally arranged on the shell and a piston rod with the two ends rotationally connected with the crankshaft and the mounting shafts respectively. The motor is arranged on one transverse side of the air compressor body. An output shaft is connected with the crankshaft through a coupler. The oil groove is formed in the shell; the lubricating mechanism comprises an oil spraying pipe arranged on the piston barrel, an oil conveying pipe communicated with the oil spraying pipe, an oil bailing piece used for bailing oil from the oil groove and a linkage assembly in transmission connection with the piston rod and the oil bailing piece, and a plurality of liquid spraying holes are evenly distributed in the periphery of the piston barrel. Lubricating oil can be evenly sprayed to the inner wall of the cylinder body channel for lubrication, and the self-lubricating effect is good.

The invention provides a constant-pressure energy storage system and a constant-pressure expansion power generation method. Comprising a first-stage compressor motor, a first-stage compressor, a second-stage compressor motor, a second-stage compressor, a high-pressure cylinder, a low-pressure cylinder, a generator, an exhaust funnel, a hot water storage tank, a cold water storage tank, a compressed air condenser, a ground pipeline steel gas storage, a hot water storage pump, a cold water storage pump, a liquid air booster pump, an air inlet cooler, a first-stage cold water storage heater and a first-stage air cooler. The system comprises a first-stage gas-water separator, a second-stage cold water storage heater, a second-stage air cooler, a second-stage gas-water separator, a second-stage hot water storage cooler, a first-stage hot water storage cooler, a seawater preheater, a seawater heater, a compressor outlet shut-off valve, a pressure stabilization regulating valve and a liquid air supply valve. The air storage device is miniaturized, cold energy is efficiently utilized, and the system efficiency is improved.

The invention provides a fracturing pump and an electric fracturing sledge, and relates to the technical field of petroleum and natural gas extraction equipment, the fracturing pump provided by the invention comprises a pump body and a plurality of power units arranged in parallel; the pump body comprises a cavity and a plurality of connecting ends arranged in one-to-one correspondence with the power units, the cavity is provided with a liquid inlet valve group and a liquid outlet valve group, and the liquid inlet valve group and the liquid outlet valve group are communicated with the connecting ends through the cavity; the power unit comprises an electric driving mechanism, a transmission mechanism and a moving assembly, the moving assembly is in sliding and sealing fit with the corresponding connecting end, and the electric driving mechanism drives the moving assembly to reciprocate relative to the connecting end through the transmission mechanism. The fracturing pump has the advantages of being efficient, capable of saving energy, environmentally friendly, low in noise, high in reliability, easy and convenient to maintain, small in size, light in weight, high in energy adaptability and the like.

The invention provides an air compressor refrigerating system and an air compressor system.The air compressor refrigerating system comprises a cooling liquid cooling loop, a heat exchanger, an indirect water cooling loop and a first water cooling loop, and the cooling liquid cooling loop and the indirect water cooling loop both communicate with the heat exchanger so that cooling liquid can be cooled through water in the heat exchanger; the cooling liquid cooling loop and the first water cooling loop are respectively communicated with a motor in the air compressor in an on-off manner; the air compressor cooling system has a first mode and a second mode, in the first mode, the cooling liquid cooling loop communicates with the motor to cool the motor, and the first water cooling loop does not communicate with the motor; and in the second mode, the cooling liquid cooling loop is not communicated with the motor, and the first water cooling loop is communicated with the motor to cool the motor. Through dynamic switching between the two cooling modes, reasonable matching of refrigeration efficiency and energy consumption is achieved, and therefore the energy efficiency ratio of overall operation of the system is increased.

The invention belongs to the technical field of compressed air energy storage, and discloses a compressed air energy storage system suitable for multiple well sites, the compressed air energy storage system comprises the well sites and a power station, the multiple well sites are connected in parallel through pipelines and connected with the power station, and the power station comprises an energy storage module and an energy release module; each well site comprises a gas storage module, an engine in the power station is connected with the energy storage module, and the engine provides electric energy for operation of the energy storage module; the energy storage module is connected with each air storage module in a plurality of well sites, and air compressed by the energy storage module is stored in the air storage module; the air storage module is connected with the energy release module, and air compressed in the air storage module acts through the energy release module to generate power for a generator in the power station. A plurality of well sites are connected through pipelines, the requirement for the capacity of an overground gas storage tank is further lowered, about 35-45 MWh of electric energy can be stored under the gas storage volume provided by a single well site corresponding to the gas storage pressure of 20 MPa, the storage space of compressed air is greatly increased through the arrangement mode of the multiple well sites, and the storage capacity of the compressed air is greatly improved. And a waste oil and gas well field after exploitation of a petroleum production enterprise is fully utilized.

The utility model discloses a gas booster pump driven by a lead screw motor, which relates to the technical field of gas compression and comprises a booster pump body formed by connecting a gas pressure cylinder part and a lead screw motor driving part. The gas pressure cylinder part comprises a compression cavity which is provided with a gas inlet, a gas outlet and a one-way valve, and a piston is arranged in the cavity; and a screw rod motor shaft capable of stretching and retracting in a reciprocating manner is arranged in the screw rod motor driving part and is fixedly or floatingly connected with the piston. A stator and a rotor nut are coaxially sleeved in the lead screw motor shell, and a lead screw motor shaft is provided with an anti-rotation structure. During working, the rotor nut rotates to drive the lead screw motor shaft to move to push the piston to compress gas. The air compressor has the beneficial effects that the screw rod motor is used for driving the booster pump to work, the noise is low during air boosting work, and the efficient and accurate air compression requirement is met.

A power end includes a monolithic core with a base having a surface configured to mount to a fluid end of the reciprocating pump and a plurality of extensions integral to the base. Each extension of the plurality of extensions includes a ring portion that defines an opening configured to receive a crankshaft of the reciprocating pump. The power end also includes a plurality of plates separate from the monolithic core. Each plate of the plurality of plates extends between a pair of adjacent of extensions of the plurality of extensions to enclose the monolithic core.

A pressurized gas delivery system includes at least a first gas supply source and a second gas supply source. The first gas supply source is configured to supply a first pressurized gas output, and the second gas supply source is configured to supply a second pressurized gas output. A valve including at least a first position and a second position fluidly connects an outlet of the first gas supply source to a system outlet in the first position and to an inlet of the second gas supply source in the second position.

The invention relates to the technical field of compressors, in particular to a compressor, an integrated heat management system comprising the compressor and a vehicle comprising the integrated heat management system.The compressor comprises a shell with the hollow interior, and the shell comprises a shell upper portion used for containing a motor and a shell lower portion used for containing a pump body; a refrigerant compressed by the pump body is discharged from the upper portion of the shell, a cooling flow channel independent of the inner space of the shell is arranged on the upper portion of the shell, the cooling flow channel is provided with a flow channel inlet allowing cooling water to flow in and a flow channel outlet allowing the cooling water to flow out, and the cooling water flows through the cooling flow channel and absorbs heat in the shell. In the integrated heat management system, a cooling flow channel is connected into an environment end water circulation loop and located on the upstream of an outdoor side heat exchanger. Cooling of the exhaust side motor and the pump body can be achieved.

A system and method delivering hydraulic liquid at different predetermined and controllable pressures for a hydraulic tool or machine is disclosed. The system comprises an electric motor (100) comprising a rotor (110) and a stator (120); a pump (200), the pump being a plunger-type pump and comprising a cam (210), a cam shaft (220), a plunger (230), a plunger chamber (240), and a valve (250), the valve (250) opening or closing an inlet (260) for the hydraulic liquid to the plunger chamber (240), the plunger chamber (240) comprising an outlet (270) for the hydraulic liquid, the plunger (230) engaging the cam (210), and the cam shaft (220) being connected to the rotor (110); a pressure sensor (290) sensing pressure of the hydraulic liquid to be delivered; and a controller (300) configured to control the opening and closing of the valve (250) in relation to pressure sensed by the pressure sensor (300) and rotational position of the rotor (110) or cam (210), the controller (300) thereby controlling the volume and pressure of the hydraulic liquid to the outlet (270) and the load on the electric motor (100).

The utility model relates to the technical field of door and window mechanisms, in particular to an environment-friendly aluminum alloy door and window mechanism which comprises a door and window, and a blocking device is fixedly connected to the upper end of one side of the door and window. The blocking device comprises a mounting shell, two ends of the mounting shell are provided with filter screens with a lampblack filtering function, one end of the mounting shell is fixedly connected with a driving motor, one end of a main shaft of the driving motor penetrates through one side of the mounting shell and is fixedly connected with a connecting rod, and the outer side of the connecting rod is fixedly connected with an extrusion block; the upper end of the guide block is fixedly connected with an extrusion spring, one side of the guide block is fixedly connected with a guide rod, one end of the guide rod is fixedly connected with a piston, the inner side of the mounting shell is fixedly connected with a mounting plate, the upper end of the mounting plate is provided with an empty bin, and the inner side of the mounting plate is provided with a pipeline. Therefore, the service life of the door and window is prolonged.

The invention relates to a switching device (24) for switching a volume flow of a liquid medium to and from two cylinder chambers of a device (10) of an application system for the liquid medium, the switching device comprising: a substantially cylindrical switching body (32), a housing (28), and an interior (30) which is formed in the housing and into which the switching body (32) is inserted to rotate about the central axis (34), comprising a housing inlet (26a) which is connected, through the housing (28) via a channel, to a first cylinder chamber outlet (36a) and a second cylinder chamber outlet (36b) on the housing (28), and a housing outlet (26b) which is connected, through the housing (28) via a channel, to a first cylinder chamber housing inlet (36c) and a second cylinder chamber housing inlet (36d) on the housing (28), wherein the switching body (32) has at least a first channel (38a) and a second channel (38b) which each extend between two corresponding points on the lateral face of the switching body and are designed such that a rotation of the switching body in the interior of the housing results in a mutual connection of the housing inlet (26a) to the first cylinder chamber housing outlet (36a) or the second cylinder chamber housing outlet (36b) and a connection between the first cylinder chamber inlet (36c) or the second cylinder chamber inlet (36d) and the housing outlet (26b). The invention further relates to a device (10) for an application system for a liquid medium, having the switching device (24) and having a device with two cylinder chambers (20a, 20b).