310 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 utility model discloses a machining tool for a shaft type porous workpiece of a key component of a reciprocating compressor, which belongs to the technical field of workpiece clamping devices and comprises a base, a rolling support component, a clamping component and a fixed support component. The base comprises a vertical plate, and an avoiding channel is formed in the vertical plate; the rolling supporting assembly and the fixed supporting assembly are located on the two sides of the vertical plate correspondingly and support the two ends of a workpiece correspondingly. And the clamping assembly is arranged on the vertical plate and is used for axially limiting the workpiece. The rolling supporting assembly and the fixed supporting assembly are used for supporting the two ends of the workpiece correspondingly; the clamping assembly axially limits the workpiece; and the workpiece can be quickly positioned.

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.

The invention provides an intelligent air flow adjusting system and method for a reciprocating compressor, and the method comprises the steps: obtaining the real-time pressure, flow and rotating speed data during the operation of the compressor, collecting the state of an air valve and the stress parameter of a crosshead pin through a sensor, and determining the specific distribution condition of the current load and compression work; after the target parameter sequence is obtained, the response time of an executing mechanism is adjusted by adopting a dynamic optimization algorithm according to the opening degree and rotating speed control of the gas flow adjusting valve, and a real-time instruction set of adjusting actions is determined; according to the real-time instruction set, a servo motor drives an air valve and a frequency converter to adjust the rotating speed, and the actual air volume adjusting result and energy consumption data of the compressor under the current load are obtained; according to the adjustment scheme of stress balance, finite element analysis is adopted to simulate the long-term change trend of mechanical wear, and stable operation parameters of the air flow adjustment system under the condition that wear is reduced are determined; and according to the optimization adjustment strategy, the operation logic of the compressor is updated by adopting a self-adaptive control algorithm, and a dynamic response instruction set during next load change is determined.

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 utility model relates to a reciprocating compressor cylinder sleeve which comprises a cylinder body and a cylinder sleeve arranged in the cylinder body. The cylinder sleeve comprises an inner ring and an outer ring, a plurality of supporting plates are further arranged between the inner ring and the outer ring, water through holes are further formed in the supporting plates, cavities between the supporting plates form a water cooling layer, and a water outlet hole and a water inlet hole are further formed in the supporting plate on the outermost side. Limiting grooves are further formed in the air cylinder body and the air cylinder sleeve, and an exhaust hole and an air inlet hole are formed in the two limiting grooves correspondingly. The water-cooling cylinder sleeve has the advantages that the water-cooling layer formed by the supporting plates is arranged, the cylinder sleeve can be effectively cooled, the stability of the cylinder sleeve is improved, and the service life of the cylinder sleeve is prolonged; due to the design of an oil inlet hole and a sealing cover 17, lubricating oil can be added more conveniently, and abrasion of the cylinder sleeve in the working process can be reduced.

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 relates to the field of compressors, and provides a reciprocating compressor, a control method thereof and a refrigerator. The reciprocating compressor comprises an air cylinder, a piston, a crankshaft and a gulp valve arranged at a gulp port, the piston reciprocates in a cavity, the motion cycle of the piston comprises an expansion stroke, an intake stroke, a compression stroke and an exhaust stroke, and the gulp valve is basically opened only in an effective gulp area of the compression stroke and closed in other time periods, so that the gulp pressure loss is reduced, and the service life of the gulp valve is prolonged. The compressor energy efficiency is improved. The gulp valve can be an electric control valve or a non-electric control mechanical valve linked with the crankshaft / piston. The compressor can be applied to a refrigerator refrigerating system, one compressor serves a refrigerating chamber and a freezing chamber at the same time, and the thermodynamic perfection degree and the energy-saving effect are improved.

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 vibration reduction method for a reciprocating compressor unit system, and belongs to the technical field of system vibration control. The method comprises the following steps: acquiring working condition parameters under the operation condition of a reciprocating compressor unit system and time domain vibration signals of each vibration measuring point in each testing direction, and obtaining a corresponding spectrogram; establishing a mechanical vibration finite element analysis model of the system according to the design drawing information and the quality and rigidity of equipment in the system, and obtaining the distribution condition of the inherent frequency of the structure; vibration measuring points with vibration amplitudes exceeding a set limit value are recognized through the spectrogram and serve as vibration reduction positions; and corresponding tuned mass dampers are respectively designed and mounted at the vibration reduction positions according to the inherent frequency of the system for vibration reduction. According to the method, the vibration characteristics of the reciprocating compressor unit system put into use in the operation process can be analyzed, targeted vibration reduction measures are provided, and meanwhile the service life, safety and reliability of equipment of the reciprocating compressor unit system can be prolonged.

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.

[Object] To reduce the amount of wear of a lip ring containing PTFE as a main component.[Solving Means] A sliding mechanism for a locking piston type oil-free reciprocating compressor includes: a cylinder; and a lip ring. The cylinder includes a metal cylinder body having a cylindrical inner peripheral surface extending in an axial direction and a coating film provided on the inner peripheral surface. The lip ring is attached to a piston reciprocating along the axial direction while swinging in the cylinder and slides with respect to the coating film during the reciprocation of the piston. The lip ring contains PTFE as a main component. The coating film contains PTFE and a binder resin as main components, and a mass ratio of the PTFE to the binder resin is 0.4 or more and 2.0 or less.

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.

A reciprocating compressor is disclosed. The reciprocating compressor comprises a shell, a driving motor, a driving shaft, a piston, a cylinder block, a muffler assembly and a clamping member, wherein the clamping member can have a clamping elastic part that is elastically deformed and allows the muffler assembly to be pressed toward the cylinder block during fastening of the clamping member. Therefore, when a clamping fixing part is fastened to the front end surface of the cylinder block, the clamping elastic part is widened and extended and the clamping elastic part serves as a type of buffer, thereby enabling the muffler assembly, which is made of a plastic material, to be firmly fixed to the cylinder block while preventing deformation thereof.

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 single-action air cylinder structure with oil lubrication, which comprises a separator and a compressor, an outlet end of the separator is connected with an air cylinder of the compressor through a process gas pipeline, a piston component is arranged in the air cylinder, a liquid discharge pipeline is connected to a non-action side of the air cylinder, and the liquid discharge pipeline is communicated with the process gas pipeline. One end of the liquid drainage pipeline is connected with the inlet end of the separator, a one-way valve and a stop valve are sequentially arranged on the liquid drainage pipeline, the reciprocating compressor relates to the technical field of reciprocating compressors, and the liquid drainage pipeline is arranged on the non-acting side of the air cylinder and connected with the inlet end of the separator, so that the problem of liquid accumulation on the non-acting side is effectively solved. The accumulated liquid is discharged into the separator through the liquid discharging pipeline, the one-way valve and the normally-open stop valve, the liquid impact phenomenon caused by the accumulated liquid in the running process of the compressor is avoided, and the running safety and reliability of equipment are improved.

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.

A reciprocating compressor is disclosed. The reciprocating compressor may comprise: a shell; a compression part; a discharge pipe; a loop pipe; and a damper member, wherein the damper member may be formed of a material having a rigidity that is less than that of the loop pipe to surround at least a portion of the loop pipe. Accordingly, when the compressor is operated to vibrate the loop pipe, a damper member surrounding the loop pipe is deformed by the vibration of the loop pipe so as to absorb and thus reduce the vibration of the loop pipe.

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.

The compressor unit comprises: a connecting rod sealing part for sealing between the piston connecting rod and the cylinder part; and a leakage gas discharge part for discharging the hydrogen gas leaked to the connecting rod sealing part to the outside. The connecting rod sealing part comprises a sealing ring part; a discharge passage through which the hydrogen gas leaked through the seal ring part flows into the leaked gas discharge part; a gas seal part that forms a gas seal in a gap between the piston rod and the rod seal part on the basis of the hydrogen gas at a position located on the crank mechanism side with respect to the discharge passage; and a seal ring portion disposed between the gas seal portion and the discharge passage. And the pressure of the hydrogen in the gas sealing part is higher than that of the hydrogen in the leaked gas discharging part.

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