232 results about "Reciprocating compressor" patented technology

The invention provides a large reciprocating compressor continuous stepless regulation system and method based on intelligent control, and the method comprises the steps: building a continuous stepless regulation model according to a load change trend and process fluctuation characteristics, and determining an initial parameter set of a regulation instruction through a preset load range regulation threshold value and a dynamic response speed requirement; according to the non-equilibrium stress adjustment scheme, dynamically adjusting operation parameters of a compressor execution mechanism, monitoring the abrasion state of key components through a real-time feedback control technology, and determining operation data of the components after stress equilibrium; and the operation data of the parts after stress balance are obtained, the operation parameters of the compressor are subjected to secondary calibration through an intelligent control system in combination with an energy efficiency improvement target, and the optimized optimal pressure ratio state parameters are obtained.

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 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.

A kind of reciprocating compressor full-range control type rotary cup exhaust valve, including valve seat, valve core, valve rod and the like components, valve core and valve seat all adopt V cup type structure, valve core and valve rod adopt integrated structure, are controlled by rotary motion driving device full range, set the motion law of valve core, valve rod, execute acceleration, deceleration, waiting and brake and the like motion instruction, realize rotary valve opening and closing, rotary friction is small, sealing performance is good, long-term use wear can be automatically compensated, flow coefficient is big, resistance coefficient is small, the effective flow area of valve core and valve seat is more than 2 times of conventional plane-shaped meshed intake valve;The present application also has the characteristics of no impact, long stay time when fully open, overcome the essential defects of the prior art meshed exhaust valve, such as large resistance loss, valve piece impact is serious;The present application can be used for the modification of existing meshed exhaust valve, and can also be used as a complete set of exhaust valve for new reciprocating compressor.

The invention discloses a compressor (1) comprising at least a gas leak recirculation duct (R1) connected between the packing (9) and the aspiration of the compressor (17), preferably several ducts (R2, R3, R4) recirculation the leaks from the several compartments (81, 82, 83) of the compressor (1) towards the aspiration (17) of the compressor (1). Thus, possible gas leaks in the compressor (1) are sent to the admission. Further, this compressor (1) comprises a crankcase (7) lubrication system through which an ionic liquid (LI) flows instead of oil (A), and the crankcase (7) is maintained pressurized, that is, essentially airtight.

The invention discloses a compressor assembly, a heat pump system and a clothes dryer. The compressor assembly comprises a reciprocating compressor, a heat pump assembly and a heat pump assembly, the protection shell is arranged on the side, in the first direction, of the reciprocating compressor, the protection shell limits or participates in limiting of a containing cavity, the protection shell is provided with a metal layer and a heat insulation layer, the metal layer is arranged on the outer side of the heat insulation layer, and a wire outlet is formed in the side, in the second direction, of the protection shell. The second direction is perpendicular to the first direction; and the starter is arranged in the accommodating cavity, and a lead wire of the starter is arranged in the wire outlet in a penetrating manner. According to the compressor assembly, the protective shell is provided with the metal layer, so that the risks of melting and overfire are avoided, the structural strength of the protective shell is improved, and the service life of the protective shell is prolonged; in addition, the compressor assembly is small in occupied space, the installation space of other assemblies is not prone to being occupied, and the arrangement difficulty is low.

The invention discloses a reciprocating compressor, a heat management system and a clothes dryer, and the reciprocating compressor comprises a shell provided with a plurality of exhaust pipes; the pump body is arranged in the shell, the pump body comprises a compression cavity, an exhaust cavity and a plurality of high-pressure cavities, the exhaust end of the compression cavity is communicated with the exhaust cavity, the plurality of high-pressure cavities are respectively communicated with the exhaust cavity, and each high-pressure cavity is communicated with at least one exhaust pipe. According to the reciprocating compressor provided by the invention, the exhaust pipes are arranged, so that the exhaust resistance is reduced, the efficiency of exhausting gas out of the reciprocating compressor is improved, the reciprocating compressor can bear higher gas flow, and the refrigerating capacity and the working efficiency of the reciprocating compressor are effectively improved.

The invention discloses a virtual reality interactive training method for a reciprocating compressor system, and particularly relates to the technical field of industrial equipment operation training, and the method comprises the four steps: constructing a three-dimensional simulation scene, and generating a preset task standard track; collecting trained behavior data, and judging whether path deviation or key node misjudgment exists or not; calculating a cognitive divergence index and a fault reasoning consistency index, and inputting the indexes into the decision model to generate a training adjustment parameter set; dividing the participants into high-level or low-level interactive behavior types according to a parameter result, and dynamically optimizing a task path or entering a next training process according to the high-level or low-level interactive behavior types; according to the method, through behavior data acquisition and deviation identification, construction of a cognitive divergence index and a fault reasoning consistency index and driving of a decision model to generate training adjustment parameters, participant interaction behavior level identification is realized, a task path structure is dynamically adjusted based on an evaluation result, and personalized training process optimization and cognitive intervention are realized.

A reciprocating compressor is disclosed. The reciprocating compressor includes a housing, an electric motor, a compressor section, a crankshaft, and a counterweight. The counterweight may be equipped with a spill guide extending from a fixed portion toward the opposite side of the eccentric mass portion, guiding oil spilled from the oil flow path toward the compressor section. This causes a large amount of oil spilled from the oil flow path to be spilled further toward the cylinder and piston, thus ensuring a smooth supply between the inner circumferential surface of the cylinder and the outer circumferential surface of the piston, thereby improving the compressor's cooling capacity and / or energy efficiency.

A blow-by plate according to at least one embodiment of the present disclosure can be attached to a housing facing a recess provided in the housing of a reciprocating compressor as a part of a pressure equalizing flow path to form the pressure equalizing flow path for returning blow-by gas of the reciprocating compressor to an intake side. A blow-by plate according to at least one embodiment of the present disclosure is provided with: one or more openings provided at positions facing a recess; and a mesh part which is provided in the opening part and through which blow-by gas can pass.

The utility model discloses an air inlet filter for an air compressor, which relates to the technical field of filters, and comprises an air filtering piece for filtering air, and the air filtering piece is arranged at the air inlet end of a top cover; the top cover is mounted in the tank body filled with lubricating oil in a matched manner; an air inlet channel is formed in the top cover, and an air pipe is fixed below the air inlet channel; the lower end of the air pipe is immersed in the lubricating oil; according to the utility model, under the extraction of the reciprocating compressor or the screw compressor, external air enters the outer shell through the top cover, passes through the filter and the filter element and then enters the air inlet pipe; the air enters the air inlet channel in the top cover, then the air is conveyed into the lubricating oil through the air pipe, when the air is pumped away again, the air carries part of the lubricating oil component, and therefore an air path of the compressor can be conveniently lubricated. Due to the arrangement of the filter and the filter element, dust carried in the air is reduced, and the cleanliness of the air entering the air compressor is guaranteed.

The present invention relates to a method for starting a BLDC motor (10) with a trapezoidal shaped induction voltage under high load conditions using a modified two-level discrete fixed-time or fixed-frequency hysteresis current controller, the BLDC motor (10) being driven by an inverter bridge (30) with only one current sensor (20) placed on the busbar and controlled by a processing unit associated with an analog-to-digital converter, the novelty of which consists essentially in the fact that the intensity of the current (Im) of the BLDC motor is controlled by a two-level discrete fixed-time or fixed-frequency hysteresis current controller.

This reciprocating compressor comprises: a crankshaft; a crosshead part that is connected to the crankshaft; a cross guide part that accommodates the crosshead part; and a compression part that is placed on the cross guide part. The cross guide part includes: a plurality of column parts each continuing from the lower end to the upper end of the cross guide part on one outer wall of wall parts constituting the cross guide part; and one or more recessed shape parts formed in a recessed shape so as to be thinner than the plurality of column parts between the plurality of column parts in a first direction in which the crankshaft extends.

The utility model discloses a symmetrical balance type reciprocating compressor multi-row crankcase which comprises a crankcase body and middle bodies, the middle bodies are arranged on the outer side wall of the crankcase wall of the crankcase body, a plurality of crankshaft seat rib plates are arranged in a crankcase cavity of the crankcase body, the middle bodies with the same number are arranged on the two side walls of the crankcase body, and the crankshaft seat rib plates are arranged on the middle bodies. The box body, the crankshaft seat rib plate and the middle body are cast into a whole; the middle body comprises middle body forward side walls and middle body inclined side walls, the middle body inclined side walls are obliquely arranged on the box wall of the box body, and each middle body forward side wall and each middle body inclined side wall correspond to a crankshaft seat rib plate; the forward side wall of the middle body and the corresponding crankshaft seat rib plate are roughly located on the same plane, and the inclined side wall of the middle body and the corresponding crankshaft seat rib plate intersect on the box wall of the box body. At least two middle bodies are arranged on the box wall of each side of the box body. And the cross section of the box body is generally of a U-shaped structure. The crankcase has the advantages of being good in overall rigidity and reasonable in stress, and is particularly suitable for a symmetric balance type reciprocating compressor.

The utility model discloses a return gas temperature regulation and control system of a reciprocating compressor system, which comprises an air inlet pipeline and an inlet washing tank, the air inlet pipeline is communicated with an air inlet of the inlet washing tank, and an air outlet of the inlet washing tank is communicated with an air inlet of an inlet buffer tank. An air outlet of the inlet buffer tank is communicated with an air inlet of the reciprocating compressor, an air outlet of the reciprocating compressor is communicated with an air inlet of the outlet buffer tank, an exhaust port of the outlet buffer tank is communicated with an air inlet of the cooler through an air outlet pipeline of the outlet buffer tank, and the cooler is communicated with an exhaust pipeline. According to the return gas temperature regulation and control system of the reciprocating compressor system, an outlet buffer tank gas outlet pipeline is connected with a return gas inlet pipeline through a hot return pipeline, a return temperature control valve is arranged on the hot return pipeline, and a pressure transmitter is installed on an inlet washing tank. Signals of the pressure transmitter are used for controlling the valve opening degree of the backflow pressure control valve.

The high-precision piston rod connecting structure comprises a piston rod, the upper end of the piston rod is connected with a piston body, the lower end of the piston rod is connected with a crosshead, the upper end of the crosshead is connected with a positioning flange with a center hole, and the lower end of the piston rod is a reducing end transited through a conical surface section. The reducing end penetrates through the center hole of the positioning flange and is stretched and locked by a first fastening structure; the upper section of the center hole of the positioning flange is a taper hole matched with the conical surface section of the piston rod; the upper end of the piston rod penetrates into a center hole of the piston body, is stretched and locked by a second fastening structure and is provided with an anti-rotation structure. Automatic centering is achieved through conical surface matching, stable pre-tightening force is provided in cooperation with a double-fastening structure, the problems that a traditional connecting structure is insufficient in precision and poor in locking reliability are effectively solved, the operation precision and stability of a compressor are greatly improved, and meanwhile the compressor connecting structure has the advantages of being convenient to install and maintain and long in service life.

The present invention relates to the field of offshore oil and gas extraction technology, and more specifically, to a one-button start system for a multi-stage reciprocating compressor and a method for starting the system. The one-button start system comprises a controller, a one-button start control unit, a positive pressure ventilation and fire and gas system detection unit, an external auxiliary system detection unit, an alarm unit, and a signal acquisition unit. The present invention overcomes the disadvantage of the prior art that multi-stage reciprocating compressors cannot be started with one button. By integrating the entire startup process of the multi-stage reciprocating compressor through sequential control, a highly automated, safe, and efficient startup solution is formed, which avoids the safety risks of manual startup, saves manpower, reduces labor costs, and also improves the production and operation efficiency of offshore oil and gas extraction platforms.

A reciprocating compressor is disclosed. The reciprocating compressor includes a shell, a driving motor, a crankshaft, a piston, and a bearing protrusion, wherein the bearing protrusion may have at least one oil receiving groove formed in a linear bearing portion extending along a reciprocating direction of the piston in a direction intersecting the reciprocating direction of the piston. Accordingly, a sealing surface using an oil film in the linear bearing portion is reinforced while the refrigerant in a compression chamber is effectively prevented from leaking through a gap between a cylinder and the piston, thereby improving energy efficiency and / or cooling capacity of the compressor.

Disclosed is a reciprocating compressor. The reciprocating compressor can include a housing, a driving motor, a driving shaft, a piston, a cylinder, and a suction muffler, and a refrigerant trapping portion wider than a suction inlet can be provided between an internal space of the housing and the suction inlet of the suction muffler. Thereby, manufacturing costs of the suction muffler can be saved by simplifying the structure of the suction muffler, and vibration and / or noise at the suction muffler can be effectively attenuated by sufficiently securing a muffling space while simplifying the structure of the suction muffler, and the amount of refrigerant suction into the compression chamber can be increased and compressor performance can be improved by increasing the amount of refrigerant suction by the suction inlet.

A stable discharge pressure of compressed hydrogen gas generated from the electrolysis of water is achieved and maintained at the outlet of a "hybrid" multistage compression system comprising at least a first section comprising at least one centrifugal 5 compressor powered at least in part by electricity generated from at least one renewable energy source and a further section downstream of the first section, wherein the further section comprises at least one reciprocating compressor. 10 15 20 25 20 24 21 96 83 13 S ep 2 02 4 A B S T R A C T 2 0 2 4 2 1 9 6 8 3 1 3 S e p 2 0 2 4 5 1 0 1 5 2 0

This application relates to a device for reducing the energy consumption of a reciprocating compressor in a light hydrocarbon recovery unit. The device includes a feed gas compressor, a desulfurization tower and a molecular sieve tower connected to the feed gas compressor, a first expander connected to the molecular sieve tower, and a cold box connected to one side of the first expander. A second expander is disposed between the feed gas compressor and the desulfurization tower, and the pressurization ends of the feed gas compressor and the second expander are in relative communication. A circulating cooling device is also provided between the feed gas compressor and the desulfurization tower. This application reduces the outlet pressure of the reciprocating compressor and the inlet temperature of the feed gas in the cold box of the light hydrocarbon recovery unit, thereby reducing the energy consumption of the reciprocating compressor and improving the operating efficiency and yield of the light hydrocarbon recovery unit.

A water tank is connected with a main water pump and an auxiliary water pump which are connected in parallel, and overflow stop valves are respectively arranged at outlets of the main water pump and the auxiliary water pump; the water pump is divided into two paths, the first path leads to the air cylinder through a first bypass service valve, the second path is connected with a cooling device, the cooling device is composed of two coolers connected in parallel, the cooling device is connected with a filtering device, and an outlet of the filtering device leads to the filler; a mixed flow valve is connected between the rear end of the cooling device and the front end of the first bypass service valve, and an outlet of the mixed flow valve leads to the air cylinder and leads to the filtering device through the second bypass service valve. The mixed flow valve is adopted to adjust the temperature, that is, the temperature is automatically adjusted through the change of the opening degree of the adjusting valve, and the temperature stability during operation of the softened water station is realized. Overflow stop valves are arranged at outlets of the main water pump and the auxiliary water pump respectively, the minimum continuous stable flow of the centrifugal water pump is met by adjusting the stop valves, and the centrifugal water pump can be protected to operate under safe pressure.

The utility model discloses a multistage oil-free reciprocating compressor which comprises two units, and each unit comprises a main body, two side plates and a rotating shaft. The main body comprises a bin body and a cylinder body, the two sides of the bin body are through, an inner groove is formed in the inner side of the end of the through side, the cylinder body is arranged at the top of the bin body, and the interior of the bin body is communicated with the interior of the cylinder body; a sealing boss is arranged on the edge of one end face of the side plate, and a round hole is formed in the center of the side plate. Widening parts are arranged at the two ends of the rotating shaft, special-shaped holes are formed in the ends of the widening parts, two cranks are symmetrically arranged in the middle section of the rotating shaft, a driven shaft is connected between the two cranks, and the central axis of the driven shaft is parallel to the central axis of the rotating shaft but does not coincide with the central axis of the rotating shaft; the two side plates block the two through sides of the bin body respectively, and the sealing boss is embedded into the inner groove in the bin body, so that the transmission consistency is improved, and the heat dissipation efficiency is enhanced.

The invention relates to the technical field of compressor air valve maintenance, in particular to a multi-angle adjustable disassembling and assembling tool for a heavy air valve of a reciprocating compressor. The device comprises an air valve multi-angle adjustable disassembly and assembly tool and an air valve disassembly and assembly fixing pull rod set. The multi-angle adjustable disassembling and assembling tool for the air valve comprises a three-jaw chuck, a lifting supporting frame, a hydraulic lifter and an angle adjusting base, the three-jaw chuck is installed at the top end of the lifting supporting frame, the hydraulic lifter can drive the lifting supporting frame to ascend and descend, and the bottom end of the lifting supporting frame is installed on the angle adjusting base. Hydraulic lifting is achieved, time and labor are saved, the labor intensity of maintenance staff is reduced, safety and reliability are achieved, disassembly, assembly, movement and transportation are convenient, working efficiency is high, and air valve installation is firmer and high in precision.

A multi-mode operation method for the coordinated operation of screw compressors and reciprocating compressors relates to the field of compressor unit control technology. The multi-mode operation includes screw compressor standalone operation mode, reciprocating compressor standalone operation mode, screw compressor and reciprocating compressor coordinated operation mode, screw compressor and reciprocating compressor coordinated gas supply operation mode, and over-condition operation mode. The unit is equipped with a wireless remote transmission module, and the host computer is connected to a cloud-based management platform, supporting real-time access from multiple terminals to achieve remote monitoring and control. Based on real-time perception and big data analysis of multi-source operating parameters, this invention innovatively constructs a full-process intelligent control architecture of "operating condition monitoring - mode matching - precise control - remote coordination", realizing intelligent switching between multiple modes such as screw compressor standalone operation, reciprocating compressor standalone operation, screw compressor and reciprocating compressor coordinated operation, screw compressor and reciprocating compressor coordinated gas supply operation, and over-condition operation.

The utility model provides a kind of valve group and compressor of miniaturization reciprocating compressor, it is related to compressor field, to the problem that the temperature of existing small compressor cylinder head is too high, gas flow resistance increases and leads to efficiency reduction, by the offset structure of valve plate on the valve plate subassembly suction hole, enlarge suction valve port flow area, reduce suction resistance, reduce the pressure loss and friction heat in suction process, to reduce suction overheating, from the source to relieve cylinder head overheating problem, allow to adopt smaller size cylinder hole, meet the demand of compressor miniaturization, the valve tongue both sides of suction valve piece are provided with contraction part to form waist, exhaust hole is arranged between two sides waist, adapt to the compact space of miniaturization valve group, suction muffler outlet and cylinder cover keep apart, leave gap, cut off the heat conduction path between cylinder cover and suction muffler, form heat insulation, reduce suction overheating, reduce cylinder head temperature benign cycle, improve miniaturization reciprocating compressor efficiency.

A reciprocating compressor including a cylinder; a piston disposed to reciprocate a certain distance inside the cylinder; a connecting rod connected to the piston; a rotation shaft configured to operate the connecting rod; a rotor configured to rotate integrally with the rotation shaft; and a stator disposed inside of the rotor along a direction toward the rotation shaft or outside the rotor along the direction toward the rotation shaft. A speed fluctuation rate of the rotor is 20% or less is achieved based on consideration of a relationship between a moment of inertia of the rotor, an internal pressure of the cylinder, a cross-sectional area and a stroke length of the piston, and a minimum speed of the rotor.

The invention relates to the technical field of reciprocating compressors, in particular to a reciprocating compressor blowdown manifold structure with liquid sealing and gas-liquid separation functions. Comprising a first connecting hole, a second connecting hole and a third connecting hole, a liquid seal connector is arranged in the first connecting hole, a filler drainage connector is arranged in the second connecting hole, and a filter is arranged in the third connecting hole. An exhaust joint is arranged in the third connecting hole; the end face, located in the inner cavity of the sewage collecting pipe, of the liquid seal connector is a diagonal plane. According to the invention, the liquid seal joint presents the diagonal plane, so that on one hand, exhaust gas can be conveniently discharged, and on the other hand, the liquid seal joint with the diagonal plane can be used for discharging waste oil and completing a liquid seal effect on the exhaust gas when the waste oil exceeds the diagonal plane; and the pressurized sulfur-containing process gas leaked from the filler pollution discharge joint is prevented from entering the machine body middle body through the liquid seal joint to enter a plant.

The present invention relates to a method for monitoring the condition of a piston rod sealing system (12) of a reciprocating compressor, wherein the piston rod sealing system (12) comprises at least two grooved annexes (12a) arranged sequentially along a longitudinal direction (L) and each having at least one sealing element (12b) disposed therein, wherein a piston rod (16) extending through the sealing element (12b) and the grooved annexes (12a) is movable longitudinally and sealed by the sealing element (12b), wherein the piston rod sealing system (12) has an inlet side (E) and an outlet side (A) with a pressure difference between them, the pressure difference having a static pressure component (D). S ) and dynamic pressure component (D D The leaking gas is located in the grooved annulus (12a), and the dynamic pressure component of the leaking gas is at least measured in the piston rod sealing system (12) as a percentage (D). D ), by the dynamic pressure component (D) D The state change of at least one of these sealing elements (12b) over time is determined.

This invention relates to the field of compressor testing and control technology, and more specifically, to a fault simulation testing and control system and method for reciprocating compressors. It addresses the problem that existing reciprocating compressor fault simulation testing and control systems often employ deterministic or simplified excitation methods for valve fault simulation, making it difficult to integrate dynamic operating conditions with real random disturbances, and thus failing to achieve precise and repeatable fault injection based on crankshaft phase. This invention integrates quantum random signals and the compressor operating condition spectrum through a valve quantum fault simulation module. By dynamically adjusting the disturbance and feature ratio through time-varying weights, it generates a high-fidelity, adaptive composite excitation. Based on preset fault types and crankshaft phases, features are injected at specified angles through phase window control, achieving controllable, repeatable, and highly realistic simulation of multiple types and phases of faults.