6results about How to "Reduce gas flow" patented technology

The application discloses a surface throttling type frictionless balance cylinder and a working method, which comprises a front end cover, a cylinder body, a piston rod, a piston and a rear end cover; two circumferential grooves are formed on the outer surface of the piston, a circumferential groove adjacent to the front end cover is a gas supply groove, a circumferential groove adjacent to the rear end cover is a gas discharge groove, a gas discharge hole communicating with the inner cavity of the cylinder body is formed in the gas discharge groove, an axial gas supply channel is arranged on the end surface of the piston adjacent to the rear end cover, the gas discharge hole does not communicate with the gas supply channel, a gas supply hole communicating with the gas supply channel is formed in the gas supply groove, and three circumferential bosses are arranged on the outer surface of the piston so that gas enters the gap between the piston and the cylinder body to form a pressure gas film through surface throttling. The application has the advantages of small occupied space, simple machining and assembly, high precision and difficulty in damage, and can be reliably applied to the stable vertical movement of a vertical shaft of an ultra-precision machine tool.

The invention discloses a preparation technology of a polymer-coated guide wire and the guide wire, and belongs to the field of medical instrument production. The preparation process of the polymer coated guide wire comprises the following steps: cleaning the surface of a core wire; performing sand blasting treatment on the surface of the core wire to form a sand surface; performing plasma surface treatment on the sand surface of the core wire to finish pretreatment of the core wire; and melting a polymer to form a polymer melt, coating the surface of the pretreated core wire with the polymer melt, and cooling to form a polymer coating layer, thereby obtaining the guide wire. The core wire has the effect of enhancing the binding force between the core wire and the coating layer.

The utility model relates to the technical field of automobile air conditioner, disclose a kind of air conditioner box mixed air ratio optimization temperature damper and air conditioner box based on door stop cooperation, and air conditioner box mixed air ratio optimization temperature damper based on door stop cooperation includes door stop and temperature damper. Door stop includes first door stop, second door stop and third door stop, and cold channel is between first door stop and third door stop, and hot channel is between third door stop and second door stop. Temperature damper includes damper body and baffle, and baffle is connected to one end of damper body in the moving direction of temperature damper and close to second door stop, and the length of baffle in the direction perpendicular to the moving direction of temperature damper is consistent with the length of damper body. When temperature damper leaves full cold position, baffle is used to reduce the gap between temperature damper and hot channel inner wall. Temperature damper moves to full hot position, and the projection of third door stop in the thickness direction of temperature damper covers baffle.

This invention relates to the field of oil and gas extraction technology, and in particular to an anti-runaway screw drill bit to solve the problems of motor damage, reduced lifespan, and reduced drilling efficiency during runaway. The invention provides an anti-runaway screw drill bit, including a drill pipe, an upper connector, an anti-drop section, and a motor, and also includes an anti-runaway mechanism. The drill pipe is disposed on the upper part of the upper connector; the anti-drop section is disposed on the lower part of the upper connector; the anti-runaway mechanism is inserted into the anti-drop section; the motor is disposed below the anti-runaway mechanism; the drill pipe, upper connector, anti-drop section, and motor are sequentially connected to form a gas chamber. In the event of a runaway, the anti-runaway mechanism 500 can promptly divert the high-pressure gas in the gas chamber 001, reducing the gas flow rate used to drive the motor 400, thereby reducing the motor speed, reducing motor wear, and ultimately improving drilling efficiency.

The utility model relates to a pole plate pore channel supporting device which comprises a pole plate, a plurality of pore channels are evenly formed in the circumferential direction of the pole plate, a gasket is attached to one side of the pole plate, through holes are formed in the positions, corresponding to the pore channels of the pole plate, of the gasket and communicated with the pore channels, and supporting rings are inserted into the pore channels. One end of each supporting ring is inserted into the corresponding hole channel, and the other end of each supporting ring is inserted into the corresponding through hole. The method has the effect of reducing the probability that the gasket blocks the hole channel.

The invention relates to the technical field of heat pump systems, in particular to an independent mechanical operation experiment system and process flow, the system comprises a tower top condensation evaporator, the tower top condensation evaporator is connected with a compressor unit through a pipeline I, the compressor unit is connected with a tower kettle reboiler through a pipeline, and the tower kettle reboiler is connected with a tower kettle. The tower kettle reboiler is connected with a working medium liquid reservoir through a pipeline; the working medium liquid reservoir is connected with the pipeline I through a pipeline II; a hot gas bypass valve is arranged on the pipeline II; the working medium liquid reservoir is connected with a working medium cooler through a third pipeline, the working medium cooler is connected with the tower top condensation evaporator through a fourth pipeline, a cooler valve and a main throttling valve are arranged on the fourth pipeline, and the cooler valve is located on the side, away from the tower top condensation evaporator, of the main throttling valve. The third pipeline and the fourth pipeline are connected through a fifth pipeline, the fifth pipeline is located between the cooler valve and the main throttling valve, and a cooler bypass valve is arranged on the fifth pipeline. According to the invention, a mechanical operation experiment before formal driving can be realized by adding several small-caliber pipelines and valves.