171 results about "Discharge pressure" patented technology

In a fuel supply system that supplies gaseous fuel to the engine of a vehicle, the fluid pressure of the discharged gaseous fuel can be adjusted by electronic control, and the fluid pressure of the gaseous fuel can be safely released in the event of a malfunction such as a power supply failure. [Solution] In a fuel supply system 100 that supplies gas fuel to an engine 6, the system includes an electronically controlled regulator 3 that reduces the introduced gas fuel to a set pressure and discharges it, a pressure sensor 7 that detects the fluid pressure of the gas fuel after reduction, and a normally open electromagnetic relief valve 8 provided downstream of the pressure regulating valve of the electronically controlled regulator 3. The electromagnetic relief valve 8 opens when the fluid pressure detected by the pressure sensor 7 reaches a pressure threshold or when the system is not energized, releasing the gas fuel outside the system.

The present invention relates to an automotive pendulum-slider pump (10, 10') for providing pressurized lubricant. The automotive pendulum-slider pump (10, 10') includes a non-rotatable rotor housing (12); a rotatable rotor ring (20, 20') that rotates within the rotor housing (12) and surrounds a pumping chamber (25) having an intake opening (18) and an exhaust opening (19); a rotatable rotor hub (35) that is rotatably connected to the rotor ring (20, 20'); and a plurality of pendulum blades (30) arranged at equal angles on the circumference of the rotor ring (20, 20') and each blade (30) is pivotally hinged by a separate pendulum hinge (32) at the rotor ring (20, 20'). The vanes (30) divide the fluid in the pumping chamber (25) into multiple pumping compartments (40), wherein the pumping chamber (25) is equipped with an automatically switching pressure matching valve (50, 50') for pre-opening the fluid connection between at least one pre-openable pumping compartment (40B) and the discharge opening (19) just before the pumping compartment (40B) has reached the discharge opening (19). The pre-opening fluid connection provides pressure matching between the pre-openable pumping compartment (40B) and the discharge pressure to reduce noise emissions caused by pressure pulsations resulting from sudden pressure equalization that occurs when the pumping compartment (40) reaches the discharge opening (19).

The present application provides a capacity control valve with high control accuracy and excellent energy efficiency in normal control. The capacity control valve (V) has a valve housing (10) formed with a discharge port (12) through which a discharge fluid of a discharge pressure (Pd) passes, a suction port (13) through which a suction fluid of a suction pressure (Ps) passes, and a control port (13) through which a control fluid of a control pressure (Pc) passes; a rod (83) driven by a solenoid (80); and a main valve (50) composed of a main valve seat (10a) and a main valve core (51), the communication between the discharge port (12) and the control port (14) being opened and closed by the movement of the rod (83), the capacity control valve being provided with a CS valve (56) between the control port (13) and the suction port (14), the CS valve (56) being controlled by the dynamic pressure of the fluid flowing from the discharge port (12) to the control port (13) through the opening of the main valve (50).

The application discloses an air conditioner control method and device, an air conditioner and a storage medium, and belongs to the technical field of air conditioners. The application obtains the discharge pressure and the return air pressure of the compressor; controls the operation of the flow regulating device according to the discharge pressure and the return air pressure, detects the discharge pressure and the return air pressure of the compressor in real time, then adjusts the flow regulating device according to the detected discharge pressure and return air pressure, adjusts the flow regulating device, and effectively avoids the situation that the compression ratio of the compressor is increased, further protects the compressor, and prolongs the service life of the compressor.

The application relates to an air conditioning unit which comprises a compressor, a heat exchanger assembly, a four-way valve and a controller, the controller being connected with the compressor, the four-way valve, a suction pressure sensor and a discharge pressure sensor, when the discharge pressure Pd and the suction pressure Ps satisfy Pd P1 and Pd-Ps

This invention provides a pump body assembly and a compressor. The pump body assembly includes a cylinder liner, a piston, and a muffler structure. The cylinder liner has an inlet and an outlet. The piston is slidably disposed within the cylinder liner to form a variable volume chamber, and the variable volume chamber is located in the sliding direction of the piston. The muffler structure is connected to the cylinder liner and has a muffler cavity. The cavity wall of the muffler cavity has a communication hole for communicating with the outlet, and the cavity wall also has a pressure relief port. When the piston is in the inlet position, the inlet communicates with the variable volume chamber; when the piston is in the outlet position, the outlet communicates with the variable volume chamber; and when the outlet pressure reaches a preset outlet pressure, the pressure relief port is opened. This invention solves the problems in the prior art where oil-containing refrigerant in the compressor severely affects the thermal efficiency of the refrigeration equipment, and where fluctuations in outlet pressure lead to an excessively high suction-to-discharge pressure ratio.

The utility model discloses an outdoor high -voltage cabinet's burning arc pressure -relief device, and pressure -relief device includes: base subassembly, passageway subassembly and apron subassembly, wherein, base subassembly is used for installing high -voltage cabinet, and the bottom of base subassembly and high -voltage cabinet forms the channel of linking up, passageway subassembly includes pressure -relief channel, and pressure -relief channel includes air intake and gas outlet, and air intake is communicated with the channel of linking up, and gas outlet is located high -voltage cabinet top surface and is communicated with the outside, apron subassembly is located gas outlet, and apron subassembly is used for controlling the opening and closing of gas outlet, and the utility model discloses a channel of linking up and pressure -relief channel are set up, and the pressure -relief airflow is led out the cabinet from high -voltage cabinet inside, and the direction of gas outlet controls the pressure -relief direction from below to top, makes the pressure -relief airflow discharge from high -voltage cabinet top, avoids the harm to the surrounding personnel and things. The utility model is applicable to the field of distribution cabinet pressure relief.

An air gun assembly includes a gun tube and a pressure tube assembly. The gun tube defines a first aperture. The pressure tube assembly includes a fill block and a cylinder coupled to each other. The fill block defines a second aperture and the cylinder defines a chamber configured to contain compressed gas. The air gun assembly includes a pin disposed through the first aperture and the second aperture to couple together the fill block and the gun tube. The pin defines a channel. The air gun assembly also includes a valve assembly attached to the pin and at least partially disposed inside of the channel. The valve assembly is configured to selectively allow fluid communication into the chamber via the channel.

This invention provides a vane pump that can reduce the sliding resistance of the rotor by ensuring a gap between the side plate and the rotor. [Solution] The vane pump 100 according to the present invention comprises a rotor 102 rotatable around an axis 110, a plurality of vane grooves 108 formed radially on the outer circumferential surface of the rotor, a plurality of vanes 106 fitted into the plurality of vane grooves and slidably protruding from the rotating rotor, two side plates 114, 116 arranged on both sides of the rotor and facing the side surface of the rotor, and back pressure grooves 132, 134, 142, 144 formed on the side plates, which are able to communicate with the axis side of the vane grooves of the rotor and through which discharge pressure is guided, and the two side plates have continuous annular protrusions 152, 154 formed on the sliding surfaces 122, 146 facing the rotor and located axis side of the back pressure grooves.

The utility model discloses a low-inlet and high-outlet type depressurization regulating valve which is of a low-inlet and high-outlet structure, that is, an inlet of a fluid inlet channel is lower than an outlet of a fluid pressure relief channel, and the fluid inlet channel can guide fluid to the bottom of a liquid inlet channel; the fluid is discharged out of the pressure relief cavity in the circumferential direction of the valve element after being subjected to pressure relief through at least one bent part of the flow slowing channel, the pressure relief cavity guides the fluid to the fluid pressure relief channel to be discharged, the low-inlet and high-outlet structure counteracts fluid kinetic energy through gravitational potential energy, the flow speed of the fluid entering the valve element is reduced, and erosion to the adjusting valve is reduced.

The refrigeration device using an R454C refrigerant has, as compared with the refrigeration device using an R32 refrigerant, a higher ratio of a discharge pressure to a suction pressure of a compressor, and a larger impact load applied to a bearing portion of a crankshaft, so that the bearing portion is easily damaged. An air conditioning device (1) comprises a refrigerant circuit (10) and an outdoor unit control unit (71). The refrigerant circuit (10) has a compressor (11). The refrigerant circuit (10) circulates a refrigerant by the compressor (11) to perform a refrigeration cycle. The outdoor unit control unit (71) performs control relating to the refrigeration cycle. The compressor (11) has a compression chamber (Sc) in which the refrigerant is compressed, and an injection pipe (53) that communicates with the compression chamber (Sc). A ratio of a discharge pressure to a suction pressure of the compressor (11) is 4.5 times or more and 6.25 times or less a compression ratio of the compression chamber (Sc). The outdoor unit control unit (71) performs control such that a first ratio, which is a ratio of the flow rate of the refrigerant flowing through the injection pipe (53) to the flow rate of the refrigerant circulating through the refrigerant circuit (10), is 79% or more.

A pipeline shaft pump for extracting fluid from a geothermal production well is proposed, wherein the geothermal production well includes an inner well surface, and wherein the pipeline shaft pump includes a drive unit and a hydraulic unit having a rotor, wherein the hydraulic unit includes: an inlet section for receiving fluid under suction pressure; an outlet section including a discharge head for discharging fluid under discharge pressure; and a riser pipe. The invention also proposes a method for installing the pipeline shaft pump.

The present application relates to a compressor and an air conditioner capable of reducing noise generated by a rotating shaft bending vibration. The compressor of the embodiment is provided with a cylinder, a rotating shaft, a bearing, a discharge valve mechanism, and a muffler. The discharge valve mechanism, which is arranged at a flange portion of the bearing, has a discharge valve that is longer in a prescribed direction and that is deformed to open when refrigerant compressed in the cylinder reaches a prescribed discharge pressure, and a valve pressing member that suppresses further deformation of the discharge valve when the discharge valve is opened. The muffler covers the bearing in a manner surrounding between the flange portion and a boss portion, forms a muffler chamber for discharging the refrigerant compressed in the cylinder, and defines an outer profile of the muffler chamber by a face portion on one end side in an axial direction of the rotating shaft, a flange portion on the other end side in the axial direction of the rotating shaft, and a side face portion that connects the face portion and the flange portion in a cylindrical shape over the entire circumference of the rotating shaft, and has recesses in which the face portion and the side face portion are respectively recessed inward of the muffler chamber.

This application discloses an air conditioner control method, an air conditioner control device, and a readable storage medium. The method is applied to an air conditioner equipped with a liquid pump. The method includes: when the air conditioner is operating in cooling mode, acquiring the opening degree of the air conditioner's electronic expansion valve and the air conditioner's suction superheat; starting the liquid pump based on the opening degree of the electronic expansion valve and the air conditioner's suction superheat; acquiring the air conditioner's compressor discharge pressure and the liquid pump's head; determining the air conditioner's target composite pressure based on the discharge pressure and the head; determining the target speed of the air conditioner's outdoor fan based on the target composite pressure to perform a first pressurization of the refrigerant; and adjusting the operating frequency of the liquid pump based on the air conditioner's suction superheat to perform a second pressurization of the refrigerant. By pressurizing the refrigerant through the liquid pump and the outdoor fan, the energy consumption of the air conditioner is reduced.

A liquid discharge head is provided that can quickly discharge a variety of liquids without increasing the size. The liquid discharge head includes a plurality of inlet portions corresponding to the variety of liquids, a plurality of pressure chambers in which discharge pressure is applied to the liquids, a plurality of individual outlet portions through which the liquids are supplied to the pressure chambers, and a manifold that communicates with the plurality of inlet portions and through which the liquids from the plurality of inlet portions are supplied to the plurality of individual outlet portions. The manifold includes a plurality of upstream side portions in each of which a passage corresponding to one of the plurality of inlet portions is defined, and a downstream side portion that communicates with the plurality of upstream side portions and in which a passage that communicates with the plurality of individual outlet portions is defined.

A kind of hydraulic oil supplement system and supplement method of diaphragm compressor, control module judges that oil discharge pressure signal is less than the preset low alarm threshold of oil discharge pressure, and exhaust pressure signal is less than the preset low alarm threshold of exhaust pressure, and exhaust flow signal is greater than the preset high alarm threshold of exhaust flow, then control module will action instruction be given to actuating mechanism, actuating mechanism automatically rotates the adjusting screw cover on oil supplement plunger pump, it moves towards the direction of eccentric sleeve, to increase the movement stroke of plunger, to increase the oil supplement amount of oil supplement plunger pump.The present application can adjust the oil supplement amount of oil supplement plunger pump on line without stopping diaphragm compressor and disassembling cylinder head component, to supplement the hydraulic oil that leakage increases due to piston sealing element failure or sealing performance weakening of diaphragm compressor, reduce the great workload brought by shutdown replacement sealing element, and avoid the economic loss caused by shutdown.

An airbag device is provided for a saddle seat vehicle, which can restrict the separation of an airbag until the airbag is deployed, so that the airbag can be separated in a deployed state. The airbag device for a saddle seat vehicle comprises a gas generator (43) and an airbag (42), wherein the airbag device has a first restriction section (90) that restricts the separation between the gas generator (43) and the airbag (42). The first restriction section (90) has an elastic element (71) positioned inside the gas generator (43). When the gas generator (43) releases a gas at a first gas discharge pressure (P1), the diameter of the elastic element (71) increases due to the gas pressure, and the gas generator (43) and the elastic element (71) enter a locked state, thus restricting the separation of the airbag (42). When the gas generator (43) releases a gas at a second gas discharge pressure (P2), the elastic element (71) decreases to a diameter smaller than the diameter in the locked state, and the locked state is released.The separation of the airbag (42) is not restricted.

The utility model provides a liquid cosmetic container which comprises a container body for containing contents by improving the sealing performance between a pump component and the container. A pump device coupled to the top opening of the container body and discharging the contents by an elastic pumping action; the discharge head is connected with the pump device and applies discharge pressure, and the front end of the discharge head is provided with a content outlet; according to the pump device, the air tightness is remarkably improved through a double-sealing structure of the annular ribs and the grooves. Sealing is achieved through the annular rib formed on the lower end flange of the pump component, and compared with a sealing structure between the lower end flange and the shoulder shell of a traditional pump component, poor combination can be prevented, and air tightness can be improved.

This image, as shown in the reference diagram, is intended to display the operating status of a fire pump installed in a fire engine or similar vehicle. The part for which design registration is sought displays a bar graph showing the discharge pressure and suction pressure (compound pressure) of the fire pump.

This application relates to the field of intelligent air conditioning technology, disclosing a method, device, air conditioner, and storage medium for air conditioning control. The air conditioning compressor includes a bypass electronic expansion valve. The method includes: when it is determined that the air conditioning compressor is in unloaded operation, obtaining the current pressure ratio between the current discharge pressure and the current suction pressure of the compressor, and obtaining the current guide vane valve opening of the compressor intake guide vane; when it is determined that the compressor is in noise control mode based on the current pressure ratio, the current guide vane valve opening, the current water temperature, and the current load state of the compressor, determining the current initial opening and the current maximum opening of the bypass electronic expansion valve based on the current pressure ratio; after adjusting the bypass electronic expansion valve to the current initial opening, controlling the bypass electronic expansion valve to increase its operation until it reaches the current maximum opening in a first set cycle. This reduces the noise caused by the intake guide vane during air conditioning unloaded operation.

This application provides an automotive thermal management system, a thermal management method, and an automobile. The automotive thermal management system comprises a compressor, a condenser, and an evaporator connected in sequence to form a refrigerant circulation loop. A bypass branch is connected between the compressor's inlet and outlet. A bypass switch valve is located on the bypass branch, and a recirculation switch valve is located in the refrigerant circulation loop. A controller is connected to the bypass switch valve and the recirculation switch valve. The controller controls the recirculation switch valve to ensure the refrigerant circulation loop is open. It also controls the opening and closing of the bypass switch valve based on the compressor's outlet discharge pressure, and controls the opening degree of the bypass switch valve based on the temperature difference between the compressor's inlet suction pressure, the refrigerant temperature at the evaporator's outlet, and the air inlet temperature at the evaporator's inlet. Furthermore, it controls the opening degree of the recirculation switch valve based on the compressor's outlet discharge superheat. This application prevents refrigerant backflow into the evaporator, ensuring normal system operation and reducing energy consumption.

The utility model discloses an automatic stamping production line, which relates to the technical field of stamping and comprises a feeding platform, a discharging platform and a stamping platform positioned between the feeding platform and the discharging platform. The power transmission device comprises a power part, a feeding compression roller assembly, a discharging compression roller assembly and a transmission assembly, and the discharging compression roller assembly is in power connection with the power part and is in transmission connection with the feeding compression roller assembly through the transmission assembly, so that the discharging compression roller assembly and the feeding compression roller assembly roll synchronously; wherein the feeding compression roller assembly corresponds to the feeding platform and forms a feeding end capable of rolling in a plate, and the discharging compression roller assembly corresponds to the discharging platform and forms a discharging end capable of sending out the plate. Therefore, an automatic production mode can be formed, the production efficiency is greatly improved, input and output of the plates can be synchronized, and the sequential stamping intervals on the plates can be accurately controlled.

The invention discloses a range extender rack test system and a range extender peak specific power evaluation method, the system comprises a rack host computer, a low-voltage power supply module, a battery simulation module, an air inlet module, an oil consumption meter, a power analyzer and a cooling module, and multi-device synchronous control and data acquisition are realized through integrated design; the method comprises the following steps: acquiring test data of primary test of an internal combustion engine and a generator in the range extender based on a power analyzer; calculating the peak specific power of the range extender in the initial test according to the test data; and retesting an internal combustion engine and a generator in the range extender based on the peak specific power, evaluating the peak specific power of the range extender according to a retesting result, and outputting an evaluation result. According to the system and the method, the peak specific power of the range extender can be accurately evaluated, the dynamic property of the vehicle is effectively guaranteed, the transient discharge pressure of the battery is reduced, and therefore the reliability of the system is improved.

The invention discloses a reinforced conductive cable, which belongs to the technical field of cables, and comprises a cable, the head end of the cable is connected with a female head, the tail end of the cable is connected with a male head, a plurality of cables can be connected together through mutual cooperation of the female head and the male head, and the outermost layer of the cable is a protective layer for enhancing the strength of the cable. The protection layer is internally provided with a plurality of protection hoses used for increasing the flame retardant strength of the cable. When the cable disclosed by the invention is used, after a certain part of the cable is short-circuited or burns through the protection hose, the flame-retardant gas in the protection hose can be quickly sprayed out to extinguish the fire part, so that the fire behavior is suppressed, and the fire behavior is prevented from quickly spreading; and the flame-retardant gas in the pressure sleeve can be continuously conveyed into the protective hose along with the emission of the flame-retardant gas in the protective hose, so that more flame-retardant gas is released to participate in fire extinguishment, and the flame-retardant gas can be conveniently used for inhibiting fire spreading when the cable is short-circuited and on fire.

The utility model discloses a discharge adjusting device of a high-speed shearing homogenizer, which relates to the technical field of homogenizers and comprises a homogenizer body, a homogenizing head mounted on the front side of the homogenizer body, a pressure tank mounted at the front end of the homogenizing head, a booster pump mounted on the pressure tank and an adjusting pipe arranged at the front end of the pressure tank and capable of sliding inside and outside. Half sleeves are arranged on the upper side and the lower side of the adjusting pipe, the two half sleeves are rotationally connected to the pressure tank, two adjusting valve blocks are arranged at the front end of the adjusting pipe, a sliding groove is formed in the front end of the adjusting pipe, and the two adjusting valve blocks slide at the front end of the adjusting pipe through the sliding groove. By adjusting the internal volume and flow of the pressure tank, the discharge pressure is accurately controlled, the requirements of different materials and a homogenizing head are met, the phenomenon of excessive shearing or demulsification is avoided, liquid leakage is effectively prevented through a sealing rubber mat, the product consistency is improved through accurate flow and pressure control, the good emulsification effect is ensured, and the production efficiency is improved. The equipment loss is reduced, the service life is prolonged, and the discharging adjusting system is efficient and stable.

The present invention provides an external gear pump that can suppress a reduction in the volumetric efficiency of the pump even when the liquid being sucked in and discharged is a liquid with low lubricity, such as water. [Solution] The casing 1 includes a main body member 3 that slides against one side of both gears 11 and 12. The main body member 3 divides the sliding contact surface 3A that slides against one side of both gears 11 and 12 into a discharge pressure acting region where the force based on the discharge pressure of the liquid being drawn in and discharged acts in the axial direction away from both gears 11 and 12, and an suction pressure acting region where the suction pressure of the liquid being drawn in and discharged acts. The main body member 3 divides the back surface 3B, which is the back side of the sliding contact surface 3A, into a back discharge pressure acting region 19 where the force based on the discharge pressure of the liquid being drawn in and discharged acts in the axial direction approaching both gears 11 and 12, opposite to the force acting in the discharge pressure acting region. The back discharge pressure acting region 19 is shaped to overlap with the discharge pressure acting region in a plan view, but not overlap with the suction pressure acting region.

The utility model discloses a welded pipe welding seam polishing device which comprises a machine frame. The supporting mechanism is arranged on the rack and comprises a feeding compression roller assembly, a supporting seat and a discharging compression roller assembly which are sequentially arranged in the conveying direction of the welded pipe, the feeding compression roller assembly and the discharging compression roller assembly limit the welded pipe, and the supporting seat is used for supporting the welded pipe; the grinding mechanism is arranged between the feeding compression roller assembly and the discharging compression roller assembly and comprises a longitudinal adjusting assembly, an up-down adjusting assembly arranged on the longitudinal adjusting assembly, a grinding tool arranged on the up-down adjusting assembly and a motor for driving the grinding tool to rotate, and the grinding tool is located above the supporting base; the longitudinal adjusting assembly can horizontally move in the direction perpendicular to the conveying direction of the welded pipe, and the grinding tool polishes a welding seam of the welded pipe. The welding pipe can be supported, deformation of the welding pipe during grinding is prevented, meanwhile, the position of the grinding tool is convenient to adjust, and the flexibility of equipment is improved.

A refrigerant circuit (102) includes a main circuit (104) and a bypass circuit (106). The main circuit comprises: at least one heat exchanger (110); a first expansion valve (112) configured to control a flow rate of refrigerant through the refrigerant circuit; a compressor; a sensor (116) for detecting at least one of a discharge overheating, a discharge temperature, a discharge pressure, a suction overheating, a suction temperature, a suction pressure, a temperature of refrigerant, and a time period from the compressor (130). The bypass circuit includes a second expansion valve (114) configured to control a flow of refrigerant through the refrigerant circuit. A controller (122) controls opening and closing of the first and second expansion valves based on the detected discharge superheat, discharge temperature, discharge pressure, suction superheat, suction temperature, suction pressure, temperature of refrigerant, and time period.

The invention relates to an integrated, convenient and discharge-pressure-adjustable automatic gas-liquid discharge valve which integrates automatic exhaust, automatic pressure relief and automatic gas supply, and the discharge pressure can be manually and conveniently adjusted. The pressure regulating valve is composed of a sealing gasket, a pressure regulating bolt, a lock nut, a sealing ring, a large spring, a small spring, a valve element, a valve body, a small valve element, a supporting plate, a valve bonnet and a pressing plate. The small spring is sleeved with the small valve element and installed in the valve body, then the bearing plate, the large spring and the pressing plate are sequentially installed, the sealing ring is installed in a groove in the end of the valve body, then the valve bonnet is screwed on the valve body, the lock nut is screwed into the pressure adjusting bolt and then screwed into a threaded hole in the center of the valve bonnet, and the sealing filler is embedded into a sealing gasket counter bore of the valve bonnet. After being properly pre-tightened, the nut is sent to a test board for working condition scene test, and the nut is firmly locked after the test is finished. The valve-in-valve double-valve-element integrated design is adopted, vertical and horizontal multi-flow channels are communicated, and blockage of an air path caused by displacement of the valve elements is avoided, so that balanced distribution of air flow is achieved, and stable and reliable performance is ensured.

The present application relates to a compressor and an air conditioner capable of reducing noise generated by a rotating shaft bending vibration. The compressor of the embodiment includes a cylinder, a rotating shaft, a bearing, and a discharge valve mechanism. The cylinder compresses refrigerant. The rotating shaft has an eccentric portion disposed in the cylinder. The bearing has a flange portion defining one face of the rotating shaft in the axial direction in the cylinder, and a boss portion continuous with the flange portion and extending in a tubular shape concentric with the rotating shaft to support the rotating shaft so as to be rotatable. The discharge valve mechanism is disposed in the flange portion and has a discharge valve longer in a defined direction and deformed to open when refrigerant compressed in the cylinder reaches a defined discharge pressure, and a valve pressing member suppressing further deformation of the discharge valve when the discharge valve opens. The valve pressing member has a main body portion longer in the length direction of the discharge valve, and a fixing portion protruding in a direction crossing the length direction of the discharge valve with respect to the main body portion and fixed to the bearing.