37results about How to "Increased seal contact area" patented technology

A staged fracturing sliding sleeve used for an oil well comprises a sliding sleeve outer shell, an inner sliding sleeve, a blocking piece and a suppressing pressure control device. The sliding sleeve outer shell is used for being connected to an oil casing pipe, and a first fracturing hole is formed in the side wall of the outer shell. The inner sliding sleeve is fixed in the outer shell through a pin which penetrates through the side wall of the outer shell and the side wall of the inner sliding sleeve, and a second fracturing hole is formed in the side wall of the inner sliding sleeve, wherein the first fracturing hole and the second fracturing hole are staggered in a radial direction. The blocking piece and the suppressing pressure control device are arranged in the inner sliding sleeve. The suppressing pressure device comprises an actuating mechanism which is used for forcing the blocking piece to keep in an opened position, wherein the actuating mechanism enables the blocking piece to move to a closed position when the suppressing pressure control device receives a preset signal, seals an inner cavity of the inner sliding sleeve and forms pressure accumulation. When the pressure is increased to overcome shear force of the pin, the pin is sheared, and the inner sliding sleeve slides along the axial direction until the first fracturing hole aligns at the second fracturing hole in the axial direction of the sliding sleeve.

The invention discloses a novel air impermeability detecting sealing plug which comprises a plug housing, a plug piston, a plug piston rod, a sealing rubber ring and a sealing ventilation joint. A cavity with a sealed end is formed by the plug housing and a plug sealing cover. The sealing ventilation joint introduces a gas into a rod cavity in order that the plug piston and the plug piston rod push the sealing rubber ring. The sealing rubber ring is deformed in the radial direction so as to cover and seal the outer wall of a pipe opening and seal the open end of the plug housing. Thus, the opening of a pipe body to be tested is wrapped in the sealing cavity formed by a sealing plug, thereby greatly reducing the direct damage of a pipe opening component to a sealing component and prolongingthe service life of the sealing component.

The invention relates to a double-layer sealing bypass valve with an air-tight device. A valve body (3) is mounted on an air flue top plate (14) through a valve base (13), a filler sealing device (4) is mounted on the valve base (13) and an upper air flue partition plate (15), and a first valve plate (6), a compression elastic element (7) and a second valve plate (8) are mounted on a connecting rod (2); an air cylinder (1) is mounted on the valve body (3), the connecting rod (2) is connected with the air cylinder (1) and penetrates through the filler sealing device (4) under acting force of the air cylinder (1) to drive the first valve plate (6), the compression elastic element (7) and the second valve plate (8) to vertically move; and a hollow sealing ring (9), an inclined face sealing face (11) and a guiding device (12) are mounted on an air pipe (10) to form a double-layer sealing structure, an air-tight pipeline (5) communicates with the air pipe (10), and under the valve-closed state, compressed air enters the enclosed space formed by the air pipe (10), the first valve plate (6) and the second valve plate (8) through the air-tight pipeline (5) so as to form a positive-pressure chamber, and thus the air-tight effect is achieved. According to the double-layer sealing bypass valve with the air-tight device, zero leakage of an air flue bypass pipeline can be achieved, which is a prerequisite for dust removal equipment to achieve ultra-clean emission.

The invention discloses a machining technology method of a sealing surface. The machining technology method is characterized in that a milling cutter is fed in the direction being vertical to the sealing surface of a machined piece from top to bottom with a circular machining trace diffusing from interior to exterior, and wave peaks and valleys alternately appear on the sealing surface, so that a zigzag structure is formed. The machining technology method of the sealing surface provided by the invention has the advantages that the machining speed is high, the abrasion of the cutter is small, the machining efficiency is high, the cost is lowered, wave peaks and valleys alternately appear on the sealing surface to form the zigzag structure, and a sealing contacting surface of the sealing surface is enlarged, so that a sealing effect is greatly improved.

The invention discloses a water leakage detection device and leakage detection method special for a pipe belt type radiator and a fin type radiator. The water leakage detection device special for the pipe belt type radiator and the fin type radiator comprises a rack and a water detection pool used for conducting leakage detection on the radiator, and the rack is erected on the ground; the water detection pool is arranged on the inner side of the rack and is fixedly connected with the rack; The device further comprises a frame device which is used for supporting the radiators, a clamping device which is used for clamping the radiators, a sealing device which is used for sealing the radiators, an adjusting device which is used for driving the clamping device to move so as to clamp the radiators with different specifications, and a lifting device which is used for driving lifting of the frame device. the device has the beneficial effects that the device is convenient to install, simple to operate and high in detection efficiency, leakage detection is carried out on large radiator water detection by using a special tool, the accuracy of water leakage detection is improved, the contact area is large during sealing, complete sealing can be realized through cylinder pressure, and the accuracy of a leakage detection result is further improved.

The invention relates to an aluminum profile liquid-cooling type high-pressure box. The aluminum profile liquid-cooling type high-pressure box includes an upper cover, a box body and a buffer protection plate, wherein the upper cover, the box body and the buffer protection plate are made of aluminum profiles. The top of the box body is of an open structure and is internally provided with a plurality of electrical components; the upper cover is hermetically fastened to the open end of the top of the box body, and the buffer protection plate is detachably installed on the outer side surface of the bottom wall of the box body. A liquid-cooling channel is arranged on the bottom wall of the box body. A liquid-cooling joint communicating with the liquid-cooling channel is installed on the side wall of the box body. The high-pressure box is supported by aluminum profiles and has a good corrosion resistance effect; the liquid-cooling channel is arranged on the bottom wall of the high-pressurebox, no additional liquid-cooling pipeline is required, so that the bottom wall of the high-pressure box is in directly contact with liquid coolant, the heat dissipation effect is good, the temperature of the high-pressure box can be quickly lowered, frequent replacement of the liquid-cooling pipeline is not required, the aluminum profiles have high corrosion resistance to a liquid-cooling agent,and long-term effective use of the liquid-cooling channel can be ensured; and the buffer protection plate arranged on the outer side surface of the bottom wall of the box body can effectively improvethe stone-chipping resistance of the high-pressure box.

The invention provides a rotor engine, belongs to the technical field of engines, and solves such technical problems as bad wear and difficult sealing of a traditional rotor engine. The rotor engine comprises a cylinder, and rotors positioned in the cylinder; the rotors divide the cylinder into three combustion chambers; the rotors include main bodies, and sealing parts respectively positioned at three corners of the main bodies; multiple sealing steel rings are arranged on the inner wall of the cylinder; rotating columns capable of freely rotating are arranged at the sealing parts, and are provided with sealing modules corresponding to the sealing steel rings one to one; the main bodies are provided with hydraulic cavities corresponding to the rotating columns one to one; the main bodies are provided with pressure synchronizing devices capable of keeping synchronization between the pressures in the hydraulic cavities and the higher pressure of the pressures in the two combustion chambers on two sides of seals; and the sealing parts can be pressed with the inner wall of the cylinder under the effect of the pressures in the hydraulic cavities. The rotor engine has such advantages as low wear and excellent sealing.

The invention discloses a double-cylinder compressor for refrigeration equipment, comprising a compressor body, an upper silencer and a lower silencer, wherein the upper silencer is arranged on an upper bearing of the compressor body, and the lower silencer is arranged on a lower bearing of the compressor body. An inner edge corner of a center hole of the lower silencer should be processed into an inclined plane, and an outer edge corner of an upper end face of the lower bearing which is contacted with the inner edge corner should be processed into an inclined plane matching with the inclined plane of the center hole of the lower silencer. Because sealing contact area between the two edge corners is increased by means of the contact, thereby effectively improving sealing property of the double-cylinder compressor and reducing leakage; and mutual pressure between the two edge corners is dispersed, thereby reducing deformation of the lower bearing and noise of the double-cylinder compressor.

The invention provides a composite door and window sealing strip. The composite door and window sealing strip solves the problems that existing door and window sealing strips are poor in sealing performance and have poor a heat and sound insulation effect, the sealing performance under the low-temperature environment is reduced, and meanwhile right-angle corners are also seriously deformed. The composite door and window sealing strip comprises a connecting part used for being fixed in a door and window clamping groove and an elastic sealing part in composite connection with the connecting part, and the connecting part and the elastic sealing part are all strip-shaped sections; the composite door and window sealing strip is characterized in that the elastic sealing part is a solid thermoplastic elastomer, and the connecting part is strip-shaped thermoplastic plastic with a clamping end. According to the composite door and window sealing strip, through the improvement of the material andstructure of the sealing strip, the sealing, heat preservation and noise resistance performance is further improved, the service life is prolonged, and the low-temperature environment resistance is improved; the portions, at door and window corners, of the sealing strip can also be bent, so that the continuous sealing effect is achieved.

The invention relates to a sealing structure of a wedge-shaped blocking cap, which comprises a pit and a cap. The cap is a bowl-shaped structure, and the cap is pressed into the pit. The opening of the cap faces upward, and the cap The bottom end of the cover is sealed in the pit; the outer wall of the blocking cover is an interference fit with the pit; the bottom surface of the blocking cover is a tapered surface, and the two ends of the bottom surface are in close contact with the two ends of the pit ; The outer wall and the bottom surface of the blocking cover are transitioned through a circular arc; the beneficial effects of the present invention are: 1. Increase the sealing contact area between metals; 2. Compact structure, no extra space, can be used for structural Compact metal parts are sealed; 3. No extra riveting points are required, which does not affect the appearance.

The invention relates to an integrated closed sample dissolving system and method, belongs to the technical field of sample dissolving devices, and solves the problems of complicated operation steps,high operation intensity, low experiment efficiency, various used equipment/devices, large occupied space and environmental pollution of an existing sample dissolving device. The integrated closed sample dissolving system comprises a sample dissolving tank, a heating table and a fixed sealing assembly, wherein the sample dissolving tank comprises a tank body and a cover body; the heating table isprovided with a sample dissolving tank mounting hole; and the fixed sealing assembly comprises a fixed cover plate and a closing bolt, the fixed cover plate is located above the heating table and connected with the heating table, the fixed cover plate is provided with a first screw hole, and the closing bolt abuts against the cover body through the first screw hole. The system integrates the functions of sample dissolving, acid driving and redissolving, realizes sample dissolving, acid steam collection treatment and redissolving under a closed condition, has the advantages of simple structure,small size, less used equipment, low operation intensity, high experiment efficiency and low cross contamination risk, and has great popularization potential.

The invention relates to the technical field of splicing sealing structures, and provides a splicing sealing structure of a ventilating duct, which is large in sealing contact area, good in sealing reliability, long in service life, good in use flexibility and time-saving and labor-saving in operation. The splicing sealing structure comprises two angle iron rings and two ventilating ducts, an inner sealing assembly and an outer sealing assembly. The two angle iron rings are connected to the side walls of the two ventilating ducts correspondingly, the two angle iron rings are connected with gradual change rings correspondingly, the inner sealing assembly comprises four lining strip frames, every two adjacent head-to-tail lining strip frames of the four lining strip frames are connected through a corner sleeve. The four lining strip frames are connected with front wedge-shaped push strips and rear wedge-shaped push strips, the outer sealing assembly comprises four outer corner sealing sleeves, and every two adjacent outer corner sealing sleeves in the four outer corner sealing sleeves are connected through an outer adjusting sleeve. A plurality of tension springs are connected between every two adjacent outer corner sealing sleeves in the four outer corner sealing sleeves.

The invention provides a three-color injecting molding device with an adjustable middle injecting nozzle. A middle injecting gun is moved within a large range in the horizontal direction by a moving rail to adapt to the position of a middle feeding hole of a molding die. After a locking device is unscrewed, a middle switch-over bend can rotate with the assistance of a connector of a first bend part and a conical head at the discharge end of the middle injecting gun, so that the middle injecting nozzle is aligned with the middle feeding hole of the molding die specifically; and then, the locking device can be screwed, so that convex positioning strips and stripped grooves are correspondingly buckled, and the middle switch-over bend is guaranteed not to rotate casually. When the locking device is screwed, the surface of the conical head is matched with the conical inner surface of the connector so as to enable elastic seal cushions to be clamped on the contact surface to be sealed. External annular convex lines and inner annular convex lines can be used for clamping the elastic seal cushions on two sides, so that the surfaces of the elastic seal cushions are deformed, and the elastic seal cushions after deformation are correspondingly embedded in the external annular convex lines and the inner annular convex lines. The sealed contact area is increased remarkably, and the sealing effect is better.

The invention discloses a three-colour injection moulding device. According to the invention, a middle material ejection gun transversally moves by virtue of a movement track, and the position of a middle charge hole of a moulding die can be adapted through large-range transversal movement of the middle material ejection gun; after a locking device is unscrewed, a middle adapter elbow is capable of rotating with a conical head at the discharge end of the middle material ejection gun by virtue of a connector of a first elbow part, so that a middle material ejection nozzle is specifically aligned with the middle charge hole of the moulding die, and the locking device can be screwed, so that location convex bars and strip-shaped concave grooves are correspondingly buckled to guarantee no desiderative rotation of the middle adapter elbow; and after the locking device is screwed, the surface and a conical inner surface of the conical head are mutually matched to clamp elastic sealing cushion layers to seal on the contact surfaces, and external annular convex lines and internal annular convex lines can clamp the elastic sealing cushion layers at the two sides, so that the surfaces of the elastic sealing cushion layers are deformed and mutually embedded in the external annular convex lines and the internal annular convex lines, thus sealing contact areas are remarkably increased, and the sealing effect is better.