412 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 invention relates to a reciprocating compressor. The reciprocating compressor may include a housing, a drive motor, a drive shaft, a piston, a cylinder, a valve plate, a suction valve, and a suction valve stopper, and the suction valve stopper composed of an elastic member may be disposed between the suction valve and the cylinder to support a reed valve portion of the suction valve to limit an opening degree of the reed valve portion. Therefore, the opening degree of the suction valve can be sufficiently ensured, so that not only can the cooling force in a high-load operation region be improved, but also dead volume can be prevented in advance, and then the energy efficiency in a low-load operation region and / or a high-load operation region can be improved.

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 invention provides an operation power identification method and device of a reciprocating compressor, a medium and equipment. The operation power identification method comprises the steps that valve state information of all air cylinders in the reciprocating compressor in a detection period is obtained; and determining the total power of the reciprocating compressor according to the valve state information and the rated power of each cylinder. The working state of each cylinder in the detection period is determined through the valve state information, and is further combined with the rated power of each cylinder, so that the total power of the reciprocating compressor is accurately identified, and the management accuracy of the reciprocating compressor is guaranteed.

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 discloses an air suction silencer, a reciprocating compressor and a clothes dryer, the air suction silencer comprises a shell, a first silencer, a second silencer, a second silencer and a third silencer, the shell is internally provided with a first silencing cavity; the inlet pipe is communicated with the first silencing cavity; the first end of the silencing pipe is communicated with the first silencing cavity, the silencing pipe is located in the first silencing cavity, and the silencing pipe is provided with a first silencing hole communicated with the first silencing cavity; and the plurality of outlet pipes are respectively communicated with the second end of the silencing pipe. According to the air suction silencer provided by the utility model, the plurality of outlet pipes are arranged, so that the efficiency of discharging air out of the air suction silencer is improved, the air suction silencer can bear higher air flow, and the working efficiency of a reciprocating compressor is improved.

The utility model discloses a reciprocating compressor, a vehicle-mounted refrigerator and a vehicle, and belongs to the technical field of compressors. The reciprocating compressor is used for the vehicle-mounted refrigerator and comprises a shell, a pump body, a driving motor and a wiring part. The pump body is installed in the shell and comprises a pump main body and a crankcase which are arranged in the first direction, and a crankshaft is arranged in the crankcase; the driving motor is mounted on the lower side of the crankcase and is in dynamic coupling connection with the crankshaft; the wiring part is installed on the first side wall, in the second direction, of the shell and electrically connected with the driving motor, and the first direction and the second direction intersect. According to the reciprocating compressor, the wiring part can be used for being connected with the external power source, the wiring part is arranged in the second direction, and then the length of the reciprocating compressor in the arrangement direction of the pump body and the crankcase is reduced, so that the overall structure of the reciprocating compressor is more compact, and the reciprocating compressor can be better matched with the size of a vehicle-mounted refrigerator; and the plot ratio of the vehicle-mounted refrigerator is improved.

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 belongs to the technical field of compressor installation, and particularly provides a reciprocating compressor coaxiality detection method and an alignment tool. The objective of the invention is to solve the problems of low detection efficiency and low detection precision of an existing compressor coaxiality detection method. A method for detecting the coaxiality of a reciprocating compressor comprises the steps that an emission target assembly is placed in a compressor body, and a switch of an emission target is turned on; placing an alignment tool in a slide way of the compressor so as to align the light emitted by the emission target; a receiving target assembly is installed in the slide way, and a detected reference site is determined; and the receiving target assembly is installed in an air cylinder of the compressor, and the concentricity deviation value of the sliding way and the air cylinder is determined according to the reference site. The detection method provided by the invention can be used for measuring the concentricity of the cylinder-slideway of the horizontal reciprocating compressor of different types of products, and the precision of initial alignment, the overall detection efficiency and the accuracy of the detection result are effectively improved.

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 present invention provides a leakage detection device for a reciprocating compressor air valve, which relates to the technical field of sealing test. The leakage detection device body comprises a boosting cavity, a secondary detection cavity and a main detection cavity. A boosting mechanism is inserted at the top of the boosting cavity, an electric heating wire is embedded on the inner wall of the boosting cavity, the air valve body to be tested is pressed against the bottom of the boosting cavity, the secondary detection cavity is sleeved on the side of the air valve body to be tested, and a sealing ring is integrally formed at the edge of the secondary detection cavity. The leakage detection device can timely detect leakage problems in the leakage detection device itself through the two detection cavities, so as to avoid the interference of the air tightness state change of the device itself on the detection result of the air valve to be tested. The positioning detection mechanism at the bottom can more accurately determine the specific leakage area of ​​the air valve, so that the final detection result is more accurate, and an additional verification and detection function is provided in the top boosting mechanism.

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.

The utility model relates to the technical field of support equipment of a reciprocating compressor unit, and particularly discloses a fuel gas system of a wellhead gas reciprocating compressor unit, which comprises a gas taking port, a first cooler, a coalescence type filter and an engine, a pressure reducing valve is arranged between the first cooler and the coalescence type filter, the engine is connected with the coalescence type filter, a compressor and a second cooling device are arranged between the gas taking port and the first cooler, one end of the compressor is communicated with the gas taking port, and the other end of the compressor is communicated with the second cooler. Compared with the prior art, according to the technical scheme, well head gas can reach the ideal state of fuel gas of an engine in the aspects of pressure, temperature and purity, and the use requirement of the engine for the fuel gas is met.

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.

Externally pressurized gas is used to provide a gas seal and gas lubrication for a piston rod packing unit of a reciprocating compressor. The externally pressurized gas can also be used to provide gas lubrication for the cylinder via flow of the externally pressurized gas through the piston of the reciprocating compressor. The gas seal and gas lubrication can reduce or eliminate greenhouse gas emissions from a reciprocating compressor used to compress natural gas.

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.