41results about How to "Not easy to ablate" patented technology

The invention relates to a conductive contact, in particular to a zigzag secondary camber conductive contact used for switches, relays and contactors, comprising a group of two contacts: a movable contact and a fixed contact; the movable contact and the fixed contact are respectively a concave camber and a convex camber which are coincident to each other; the invention uses the curve contact to replace a planar contact or point contact, solves the problems that the contact area of the conductive contact is extremely finite and the contact state is unstable, and overcomes the shortages that the existing conductive contact technique and product have weak current passing capability and the contacts are easy to be burned.

The invention discloses a pulse-detonation engine combustion chamber, and belongs to the technical field of detonation engines. A plurality of rows of gas inlet devices are arranged on a gas inlet path housing and the combustion chamber wall surface; and every two rows of pneumatic gas inlet devices are spaced by a distance which is 0.5-1 time the diameter of the combustion chamber. Each gas inlet device is composed of a drainage section and a gas inlet, wherein the gas inlet path housing defines a circular ring shaped secondary gas inlet path, the drainage section is in the form of a hollow cylinder connecting the gas inlet path housing to the engine wall surface, the cylinder has the same angles of inclination in the axial direction and the peripheral direction of an engine, and a plurality of gas inlets are formed in the front wall surface of the cylinder. The plurality of rows of gas inlet devices are uniformly distributed in a staggered mode in the peripheral direction of the combustion chamber, and positions of the rear row of gas inlet devices are determined by rotating positions of the front row of gas inlet devices clockwise. Other parts are not arranged inside the combustion chamber, so that the service life of the combustion chamber is long; and the drainage sections are arranged outside the combustion chamber, so that internal flow resistance of the detonation chamber is effectively reduced.

It has not only major structure of general contactor but also has secondary static iron-core, as well as corollary secondary coil and locker armature which can drive locking bolt to lock or release lockpin by locking core and controll locking or releasing of dynamic iron core thus to control on or off in controlled circuit. The advantages are: the two coils are only energized in the moment that controlled circuit is actuated to on or released to off, the contactor has no power dissipation, electromagnetic noise and vibration when the controlled circuit is working, safe and reliable operate and release, long service life, rational structure, simple mfg. process and low cost.

The invention discloses an adjustable turbine guiding device and a forming method. The device comprises an annular inner ring assembly, an annular outer ring assembly and guiding blades, wherein the inner ring assembly is coaxially sleeved with the outer ring assembly, and the guiding blades are connected between the inner ring assembly and the outer ring assembly. The tail edge end faces of the guiding blades are provided with deformation adjusting seams extending towards the front edges of the guiding blades, the deformation adjusting seams communicate with blade basins and blade backs of the guiding blades, and the deformation adjusting seams are used for enabling the tail edges of one sides of the guiding blades to form angle-adjustable auxiliary wings for adjusting the direction of airflow flowing through the blade basins of the guiding blades and the flow area between every two adjacent guiding blades.

A plasma pyrolysis water spray gun for a millipore membrane cathode is disclosed and the invention relates to a plasma spray gun. The spray gun consists of a rear seat, the cathode, a spiral fluid director, an anode sheath and an anode. A water supply liquid guide tube and a cathode connecting rod are arranged in a revolving body of the rear seat, the cathode consists of a millipore membrane cathode head and a cathode sleeve, the millipore membrane cathode head has a millipore filtration membrane structure which is formed via metal powder sintering operation, the millipore membrane cathode head is inserted into a wall body of a front part of the cathode sleeve, a spiral liquid guide rib is arranged in the revolving body of the spiral fluid director, a screw pitch space of the spiral liquid guide rib forms a spiral liquid guide passageway, the cathode is connected on a front end of the cathode connecting rod, a rear end of the spiral fluid director is mounted on the rear seat, the anode sheath carrying the anode is mounted on a front end of the spiral fluid director, a head part of the cathode enters an inlet space of a Venturi jet pipe of a rear end of the anode, the inlet space of a Venturi jet pipe forms an electric discharge zone, and an inner space of an expansion segment of the Venturi jet pipe of the anode forms an injection chamber. According to the plasma pyrolysis water spray gun, heat of the cathode head can be rapidly absorbed via latent heat of water vaporization, and therefore the cathode cannot be easily ablated.

The invention relates to a plasma spraying gun and discloses a cathode of a microporous membrane structure and a plasma pyrolysis water spraying gun. The cathode is composed of a microporous membrane cathode head and a cathode sleeve, a hydrone filter channel is formed by micropores of the microporous membrane cathode head, the microporous membrane cathode head is embedded in the wall of the front portion of the cathode sleeve, and the head portion of the microporous membrane cathode head stretches out of the front end of the cathode sleeve. The plasma pyrolysis water spraying gun is composed of a rear base, the cathode, a spiral flow diverter, an anode sleeve and an anode, wherein a rotation body of the rear base is internally provided with a water supply guide pipe and a cathode connection rod, a rotation body of the spiral flow diverter is internally provided with a spiral guide rib, the anode is of a Venturi spraying pipe structure and is embedded in the anode sleeve, the space between the outer wall of the anode and the inner wall of the anode sleeve forms a cooling water sleeve, the cathode is connected with the front end of the cathode connection rod of the rear base, the rear end of the spiral flow diverter is installed on the rear base, and the anode sleeve and the anode are installed at the front end of the spiral flow diverter. Heat energy of the cathode head is rapidly absorbed through latent heat of vaporization of water, so that the cathode is not prone to ablation.

The invention provides a hard anodizing method of the top surface of a piston, which comprises the steps of generating a dense oxidation film on the top surface of the piston by adopting a hard anodizing surface processing technology; carrying out the surface processing on the top surface of the piston by utilizing a hard anodizing surface processing power supply device and a composite cooling oxidation device in the course of hard anodic oxidation processing to ensure that heat flow generated in the course of generating the oxidation film on the top of the piston is transmitted to an aluminum piston matrix part without the need of oxidation; and exchanging the heat with circulating cooling liquid. The invention is beneficial to the generation of the oxidation film; the thickness of the processed oxidation film on the top surface of the piston can reach 120 to 150 micrometers, and the hardness can reach 450 to 560HV; and the method has the advantages of dense film tissue, high production efficiency, less electrolyte amount, low energy consumption, stable and reliable performance and almost no waste.

The invention relates to a direct current disconnector and a harmonic current break device thereof. The direct current disconnector includes a fixed contact and a conductive knife switch, the conductive knife switch includes an upper contact tube, a static side arc strike assembly is arranged on the side, close to the conductive knife switch, of the fixed contact, and a dynamic side arc strike assembly is arranged on the upper contact tube. The static side arc strike assembly comprises a static side arc strike seat and a self-resetting arc strike rod, and a static side blocking piece is arranged on the side, back to the conductive knife switch, of the self-resetting arc strike rod. The dynamic side arc strike assembly comprises a dynamic side arc strike seat and a self-resetting arc strikearm, the swinging plane of the self-resetting arc strike arm is perpendicular to the swinging plane of the self-resetting arc strike rod, and a dynamic side blocking piece is arranged on the side, close to the fixed contact, of the self-resetting arc strike arm. The self-resetting arc strike arm is provided with a conductive end for being in conducting contact with the self-resetting arc strike rod and intersecting with the swinging plane of the self-resetting arc strike rod, and the hinged part of the self-resetting arc strike arm is located on the outer side of the swinging plane of the self-resetting arc strike rod. Compared with the prior art, a main contact of the disconnector is not prone to being ablated by harmonic current.

The invention discloses an arc plasma gun and relates to plasma heating equipment. The gun is characterized by consisting of an anode, a cathode, a gun barrel and a back seat, wherein the anode has a hollow annular body structure; a cooling groove is formed in an annular body and provided with a cooling water interface; the cathode has a hollow stick body structure; a cooling cavity is formed in a stick body and provided with a working water interface; the back seat has a disc body structure; the center of a disc body is provided with a passage hole; the anode, the gun barrel and the back seat are arranged coaxially; the back end of the gun barrel is connected to the back seat so as to form a gun body; the anode is connected to the front end of the gun barrel; the annular space of the anode forms a jet orifice; the internal space of the gun barrel forms an air chamber; the front end of the cathode extends into the gun barrel through the passage hole on the back seat; a discharge spaceis formed in the space between the front end of the cathode and the anode; a back stick body of the cathode is outside the gun body; and the working water interface is connected to the cooling cavityof the cathode from the outside of the gun body. The efficiency of the gun is almost 100 percent and the anode and the cathode are protected from being ablated more effectively.

The invention belongs to the technical field of disconnecting switches, and particularly relates to a fracture structure of a disconnecting switch. The invention provides a double-fracture isolating switch and GIS equipment, and aims to solve the problems that a movable contact seat is easy to ablate and short in service life in the prior art. A first moving contact and a second moving contact of the double-break disconnecting switch are connected through an insulating connecting piece, a second moving contact seat arc striking contact is fixed on a second moving contact seat, and a contact body of the second moving contact seat arc striking contact is fixed on a hole wall of a second moving contact mounting through hole through a connecting block. The second moving contact seat arc striking contact is located in the second moving contact installation through hole, and the position where the insulation connecting piece is located is provided with an avoiding space used for avoiding the second moving contact seat arc striking contact. The arc is mainly generated between the first moving contact and the arc striking contact of the second moving contact seat, and the second moving contact seat is not easy to ablate, so that the second moving contact seat is not easy to damage, and the service life is long.

The invention discloses a pulse-detonation engine combustion chamber, and belongs to the technical field of detonation engines. A plurality of rows of gas inlet devices are arranged on a gas inlet path housing and the combustion chamber wall surface; and every two rows of pneumatic gas inlet devices are spaced by a distance which is 0.5-1 time the diameter of the combustion chamber. Each gas inlet device is composed of a drainage section and a gas inlet, wherein the gas inlet path housing defines a circular ring shaped secondary gas inlet path, the drainage section is in the form of a hollow cylinder connecting the gas inlet path housing to the engine wall surface, the cylinder has the same angles of inclination in the axial direction and the peripheral direction of an engine, and a plurality of gas inlets are formed in the front wall surface of the cylinder. The plurality of rows of gas inlet devices are uniformly distributed in a staggered mode in the peripheral direction of the combustion chamber, and positions of the rear row of gas inlet devices are determined by rotating positions of the front row of gas inlet devices clockwise. Other parts are not arranged inside the combustion chamber, so that the service life of the combustion chamber is long; and the drainage sections are arranged outside the combustion chamber, so that internal flow resistance of the detonation chamber is effectively reduced.

The invention discloses a cooling structure for a recirculation combustion chamber, which comprises a flame tube outer ring, a flame tube inner ring, a large bend, a small bend and a flame tube head. One end of the flame tube outer ring is provided with a large bend, a large bend It is a ring structure, the other end of the flame tube outer ring is provided with a flame tube head, the inside of the flame tube outer ring is provided with a flame tube inner ring, and the end of the flame tube inner ring close to the large bend tube is provided with a small bend; the flame tube outer ring , which is provided with a plurality of outer ring mixing holes, and is divided into a plurality of first L-shaped unit bodies along the circumferential direction; the small elbow is in a ring structure, and is divided into a plurality of second L-shaped unit bodies along the circumferential direction . The invention belongs to the technical field of cooling, and the cooling efficiency of an L-shaped cooling elbow is higher than that of a conventional cooling elbow; the L-shaped cooling elbow is not easy to be ablated; the L-shaped cooling elbow can reduce the cost of sheet metal processing; The assembly of the segmental lap welded structure of the pipe is simple and easy to realize.

A vortex high-energy magnetic coupling switch, wherein the rotation of coupling discs (1) (6), drive the rotation of leaves (11) (19) on a circular trigger electrode axis (25) to produce a high-speed vortex field. The high-speed rotary vortex field takes away the ionized gas sputtering substance generated by the discharge of an electrode (14) and electrodes (12) (17), through a collection purifier (15), cycling from area B to area A through airflow windows (27) (28), thus improving the electrode cooling conditions to prevent electrode ablation from polluting the electrode cavity, and extending the service life. The invention applies to all kinds of high voltage, high current, and anti-impact pulse discharging devices.

The invention relates to a steel mill blast furnace hot metal pretreatment tool, in particular to a hot metal pretreatment long-service-life spray gun. The hot metal pretreatment long-service-life spray gun comprises a gun body and a vaporizing chamber positioned at the lower part of the gun body, wherein the vaporizing chamber comprises an inner side and an outer side which are formed by a heat resistant steel skeleton and a poured refractory material. The whole alloy steel structure of the vaporizing chamber is changed; heat resistant stainless steel reinforcement is welded into the skeleton and poured into the vaporizing chamber formed by the refractory material; and because the steel reinforcement is arranged in the refractory material, not in direct contact with hot metal and difficult to be ablated, the hot metal pretreatment long-service life spray gun has longer service life which commonly can reach more than 200 times and low cost, improves the service life by more than 3 times compared with the common spray gun and completely can meet the requirement of production.

The invention provides an arc plasma torch and relates to a plasma heating device. The arc plasma torch is characterized in that the torch is composed of a positive pole, a combined negative pole, a torch barrel and a back seat, wherein the positive pole, the torch barrel and the back seat are arranged in a coaxial mode, the back end of the torch barrel is connected on the back seat to form a torch body, the positive pole is connected at the front end of the torch barrel, a loop core space of the positive pole forms a nozzle, an inner space of the torch barrel forms an air chamber, and the back seat forms a back closed end of the torch barrel; the positive pole is of a hollow ring form structure, a ring-form cooling groove is arranged in the ring form, and the ring-form cooling groove is connected with a cooling water port; and the combined negative pole is composed of a negative pole rod, a negative pole head and a negative pole cap, the portion from the middle to the front end of the negative pole rod is of a tubular structure, a cooling cavity is formed in the space in a tube, the front end of the negative pole head is a reduced circular conical surface, and a back portion solid of the negative pole head is provided with a driving water gasification hole or a vaporization fin. The arc plasma torch is used in a gasification device, the efficiency of the torch reaches nearly 100%, and the arc plasma torch can effectively protect the negative pole and the negative pole from being ablated.

A cathode with a microporous membrane structure and a plasma pyrolysis water spray gun, relating to a plasma spray gun, the cathode is composed of a microporous membrane cathode head and a cathode sleeve, and the micropores of the microporous membrane cathode head form a filtration channel for water molecules , the microporous membrane cathode head is embedded in the wall body at the front of the cathode sleeve, and the head of the microporous membrane cathode head protrudes from the front end of the cathode sleeve; the plasma pyrolysis water spray gun consists of a rear seat, a cathode, a spiral deflector, The anode sleeve and the anode are composed of a water supply guide pipe and a cathode connecting rod in the rotator of the rear seat, and a spiral guide rib is provided in the rotator of the spiral deflector. The anode is a venturi nozzle structure, and the anode is installed in an embedded manner. In the anode sleeve, the space between the outer wall of the anode and the inner wall of the anode sleeve constitutes a cooling water jacket, the cathode is connected to the front end of the cathode connecting rod of the rear seat, the rear end of the spiral deflector is installed on the rear seat, and the anode sleeve and the anode are installed on the spiral front end of deflector. The invention utilizes the latent heat of vaporization of water to quickly absorb the heat of the cathode head, so that the cathode is not easy to be ablated.

The invention discloses an adjustable turbine guider and a forming method, comprising: an annular inner ring assembly, an annular outer ring assembly coaxially sleeved outside the inner ring assembly, and an inner ring assembly and an outer ring assembly. For the guide vane between the components, the trailing edge end surface of the guide vane is provided with a deformation adjustment seam extending toward its leading edge. The deformation adjustment seam connects the vane pot and the blade back of the guide vane. The deformation adjustment seam is used to make the trailing edge on one side An adjustable aileron with an adjustable angle is formed to adjust the airflow direction flowing through the vane basin of the guide vane and the flow area between two adjacent guide vanes.

The invention discloses a strontium titanate annular piezoresistor copper-tin electrode manufacturing method which comprises the steps of 1) printing an annular piezoelectric electrode on an annular piezoelectric magnet through copper paste, and sintering the annular piezoelectric electrode into a copper electrode; and 2) carrying out tin plating processing on the copper electrode in the step 1), wherein tin plating is carried out in two modes, one mode is tin immersion, the copper electrode is immersed in a solution containing tin ions, and tin is replaced with copper, and the other mode is tin electroplating, a barrel plating method is adopted, the piezoresistor with a copper electrode is placed in a cathode barrel plating tank, tin metal is connected to an anode, and tin can be electroplated on the copper electrode after the electroplating solution passes through current. Compared with the prior art, the method has the advantages that the electrode is sintered through copper paste, the harshness of the process for sintering the copper electrode is greatly reduced, the copper-tin electrode is formed through tin plating, tin soldering is facilitated, ablation is not prone to occurring during tin soldering, the tin layer protects inner layer copper from being easily oxidized, the production technology is mature and reliable, and the cost is low.

The invention discloses a self-melting alloy powder material in the metal welding and railway signal control method, which comprises the following steps: polishing the railway surface to obtain fresh metal surface; proceeding resistance seam welding through resistance seam welding equipment; producing the needed alloy; coating alloy powder on the metal surface at 1000-1130 deg C fusing point. The powder displays NiCrBSi system self-melting alloy powder or NiCrBSiCu alloy system with HRC20-HRC45 welding layer hardness. The weight percentage of NiCrBSiCu alloy system is 0.2-0.5 percent C, 0.5-5.0 percent B, 1.0-5.0 percent Si, 3.0-15 percent Cr, 2-12 percent Fe, 3-20 percent Cu and Ni. The invention improves the bonding surface of metal and steel, which solves the problem of big rail damage and low production efficiency.

The invention relates to a control method for a high-transmission-ratio spaced shifting of a tandem type electric transmission vehicle. The method comprises an upshifting control process and a downshifting control process, during upshifting, a transmission comprehensive controller sends a separation command to a control valve of a brake of a speed change mechanism; the rotational speed of a planet carrier of the speed change mechanism and the rotational speed of a motor are obtained, so that a speed difference of an active edge and a passive edge of a clutch is obtained; and a rotational speed regulating command is sent to a motor controller, the speed difference is reduced, and when the speed difference is not greater than a limit value, the clutch is jointed; during downshifting, the transmission comprehensive controller sends the rotational speed regulating command to the motor controller, so that the rotational speed is lowered to about a shifting point, and the transmission comprehensive controller sends the separation command to the control valve of the clutch of the speed change mechanism; the rotational speed of the planet carrier of the speed change mechanism, the rotational speed of the motor and the rotational speed of a gear ring of the speed change mechanism are determined to obtain the speed difference of the active edge and the passive edge of the brake; the rotational speed regulating command is sent to the motor controller, the rotating speed difference is reduced, and when the rotating speed difference is not greater than a limit value, the clutch is jointed. The method covers a needed vehicle speed range, and satisfies the requirement of the largest output torque of the vehicle.