407results about How to "Avoid seal failure" patented technology

An ultrasonic sealing apparatus prevents a sealing failure by preventing a tunnel (through passage) to form in the step portions in the vicinity of both end portions of longitudinally sealed portions, when the tubular laminated packaging material is transversely ultrasonically sealed. An ultrasonic sealing apparatus, in which a laminated packaging material containing a thermoplastic resin layer and a paper layer is formed into a tubular form and the tubular laminated packaging material is transversely ultrasonic sealed, includes a horn having an elongated and flat sealing face and an opposing jaw having an elongated pressing face which presses the laminated packaging material in cooperation with the sealing face of the horn, wherein the center portion in longitudinal direction of the pressing face of the opposing jaw is narrower than both end portions of the pressing face. Further, at a center portion in longitudinal direction of a pressing face of the opposing jaw, a recess having an arc shape, etc. in section is formed along a direction perpendicular to the longitudinal direction of the pressing face.

The invention discloses a mechanical plug pipe column for multi-point discharge of a cased hole completion multi-section fractured horizontal well and a water plugging method. The water plugging pipe column comprises a pipe plug and a Y445-type releasing packer, wherein at least three Y441-type packers are arranged between the pipe plug and the Y445-type releasing packer at intervals; sealed oil layer packing sections and water outlet layer packing sections are formed between two adjacent Y441-type packers and the inner wall of a horizontal well sleeve; a security joint and a control switch are orderly connected between the two Y441-type packers on each oil layer packing section through oil pipes in series; the security joint is serially connected between the two Y441-type packers on each water outlet layer packing section through the oil pipe; and the oil layer packing sections and the water outlet layer packing sections are connected in series through the oil pipes. According to the mechanical plug pipe column for multi-point discharge of the cased hole completion multi-section fractured horizontal well and the water plugging method, a plurality of Y441-type packers are adopted to be in multi-stage combination with the control switch, so that effective plugging of multi-point discharge of the multi-section fractured horizontal well or any point discharge is achieved; effective production of a major reservoir section is achieved, and the effects of controlling water and increasing oil are achieved.

The invention provides a direct carbon fuel battery reaction device, belonging to the field of direct carbon fuel battery technique. An upper base (1) of the reaction device is coaxially arranged into a water cooling sleeve (2); the connection of the upper base and the water cooling sleeve is welded and sealed to form a water cooling chamber; an anode current collecting Pt net (12) is used for collecting current from the anode of a button-typed solid oxide fuel battery (16); two ends of an anode current collecting Pt wire (15) are respectively used as an reference electrode and a testing electrode; the temperature measuring point of a temperature measuring thermal-couple (17) and the button-typed solid oxide fuel battery (16) keep in the same height; the bottom of an anode chamber pipe (6) is inserted into the upper hole of a lower base (43); the lower surface of a quartz sand sintering plate (42) is provided with a carbon fuel thermal-couple (56); all pipes and sealing heads (46) are hermetically connected with each other. The direct carbon fuel battery reaction device of the invention solves the problem of water adding of anode chamber and the arranging of carbon fuel, realizes that the temperatures required by the running of fuel battery and the reacting of the carbon fuel are respectively controlled, avoids complex disassembly/assembly process and personnel scald, prevents the sealing invalidity and reduces the cost.

The invention relates to the technical field of submarine observation equipment, in particular to a pressure-balanced photoelectric separation device for main submarine base stations. The device includes a submarine cable, an armored steel wire fixing mechanism, a cable core sealing protection mechanism and an oil-filled tank body mechanism. The submarine cable includes an armored steel wire (1) and a submarine cable core (12). The submarine cable core (12) is wrapped with a PE insulating layer, and a copper conductor (13) and an optical fiber unit (16) are arranged inside the submarine cablecore (12). The armored steel wire fixing mechanism is in butt joint with the cable core sealing protection mechanism, and the cable core sealing protection mechanism is in butt joint with the oil-filled tank body mechanism. The submarine cable is inserted into the armored steel wire fixing mechanism, and passes through the cable core sealing protection mechanism to the inside of the oil-filled tank body mechanism. The copper conductor (13) is connected through electrical leading with an electrical cable cabin-penetrating part (15) arranged at the end of the oil-filled tank body mechanism. Theoptical fiber unit (16) is directly welded to an optical cable cabin-penetrating part (18). The problem that a submarine cable core creeps into a photoelectric separation cabin under the pressure of deep water is solved.

The invention relates to the technical field of silicone rubber, in particular to a silicone rubber foaming material and a preparation method thereof. The silicone rubber foaming material is prepared from the following components in parts by mass: 30 to 70 parts of liquid silicone rubber, 5 to 40 parts of methyl vinyl silicone oil, 1 to 5 parts of hydrogen-containing silicone oil, 0.5 to 1.5 parts of platinum catalyst, 0.01 to 0.05 part of inhibitor, 1 to 5 parts of foaming agent, 10 to 50 parts of flame retardant and 10 to 50 parts of reinforcing agent. The silicone rubber foaming material provided by the invention is characterized in that an Si-H bond of the hydrogen-containing silicone oil is activated by the platinum catalyst to generate a silicon hydrogenation addition reaction, so as to form an elastomer with a three-dimensional net structure, so that the silicone rubber foaming material provided by the invention has good flexibility; by adding the foaming agent, dense and uniform pores are formed inside the silicone rubber foaming material, the silicone rubber foaming material has better elasticity and smaller stress relaxation property, a sealing effect of communication equipment is guaranteed, and the maintenance cost is reduced.

The invention discloses a gas-liquid distributor used for a wood tar fluidized bed reactor, the gas-liquid distributor is mainly composed of a center pipe, a bubble cap, a non-return ball, a taper ball seat and a limit seat; the bubble cap is a cylindrical matter with a bottom opening, covers the upper end of the center pipe, and is fixedly connected with the center pipe, a material outlet is arranged on the pipe wall of the upper end part of the center pipe, the limit seat is arranged in the center pipe below the material outlet, the taper ball seat is arranged on the pipe wall of the center pipe located below the limit seat, the non-return ball is arranged on the taper ball seat; the bubble cap, the center pipe, the limit seat, the non-return ball and the taper ball seat are coaxially arranged, an annular channel is formed between the bubble cap and the center pipe, and the lower end of the center pipe is provided with a material inlet. The gas-liquid distributor can not only guarantee a gas is broken into continuous micro bubbles in a liquid, and can effectively solve or ease countercurrent congestion problem of a catalyst-carrying material when gas and liquid pressure is instable or gas and liquid material feed is suddenly interrupted, at the same time, an internal flow dead zone in the distributor is reduced, and the pressure drop is smaller.

The invention relates to a double-valve-core double-sealing-surface adjusting valve, and in particular to an adjusting valve. The double-valve-core double-sealing-surface adjusting valve comprises a valve body and a cavity, wherein the cavity is formed by encircling of the valve cover; a valve inlet and a vale outlet communicated with the cavity are formed in the valve body; a valve core and a valve base are arranged inside the cavity; the valve core consists of a main valve core and a secondary valve core; a first sealing surface and a second sealing surface matched with the main valve core and the secondary valve core are respectively arranged on the valve base; the main valve core and the secondary valve core are in adjustable fixed connection; when the relative position between the main valve core and the secondary valve core is adjusted, the secondary valve core can be separated from the second sealing surface when the main valve core is clung to the first sealing surface, or the main valve core is separated from the first sealing surface when the secondary valve core is clung to the second sealing surface. Due to adoption of double valve cores and double sealing surfaces, sealing can be achieved by using a secondary sealing pair if a main sealing pair is invalid, and the service life of the valve is effectively prolonged.

The invention relates to a pipeline connector used for a filling system with higher sealing requirements, and aims to provide a redundant seal pipeline connector which has a simple structure, is reliable to seal, simple and convenient to operate, and can carry out the on-line detection on the sealing effect of the pipeline connector at the same time. The redundant seal pipeline connector comprises a seal receptacle, a seal cone, end surface sealing pieces, radial sealing pieces and fastening pieces, wherein the seal receptacle comprises a first axial bulge, a first annular flange and a first welding end, which are manufactured integrally; the seal cone comprises a second axial bulge, a second annular flange and a second welding end, which are manufactured integrally; the end surface of the second axial bulge is in butt joint with the end surface of the first annular flange; the end surface sealing pieces are positioned on the butt-joint matched surfaces; the front end of the second axial bulge is sleeved with the first annular flange; the radial sealing pieces are positioned in the radial matched surfaces; the fastening pieces are used for fixedly connecting the seal receptacle with the seal cone; a pressure measuring channel is arranged on the first annular flange; an air outlet end port of the pressure measuring channel is connected with a seal cap.

The invention discloses a multi-station transfer mechanism and motor bearing assembly equipment, and belongs to the technical field of motor assembly. The multi-station transfer mechanism comprises anX-axis transfer assembly, a Y-axis spacing regulating assembly and at least one group of Z-axis lifting assemblies; each Z-axis lifting assembly comprises a rolling ball lead screw and a lifting table which is fixedly connected to a nut in the rolling ball lead screw, wherein the upper end of the lead screw in the rolling ball lead screw is provided with an operation table, the lower end of the lead screw in the rolling ball lead screw is arranged on a support base in a penetrating mode, and the lower end of the lead screw is in transmission connection to a drive motor; the Y-axis spacing regulating assembly comprises two groups of supporting plates which are separately and fixedly connected onto supporting frames in a one-to-one correspondence mode; the supporting frames are arranged ona two-way lead screw in pair, and the two-way lead screw is in transmission connection to a drive motor; and the X-axis transfer assembly comprises transfer plates which axially extend along the X-axis, and are provided with clamping assemblies, and the transfer plates are axially arranged on the supporting plates slidably in the one-to-one correspondence mode. The multi-station transfer mechanismcan quickly take workpieces and switches to different stations, so that operation on each station is convenient.

The invention relates to an anti-loosing locking structure and a projection lamp provided with the same. The locking structure comprises a locking part, a locked part, a bolt, a nut, an anti-loosing element and a fastening element, wherein the locked part and the locking part are correspondingly provided with a first through hole and a second through hole which are communicated with each other, one tip of the first through hole away from the locking part is a counter sink, the bolt passes through the first through hole and the second through hole, the nut is arranged in the counter sink and is matched with the bolt, the anti-loosing element is fastened on the locked part and covers the counter sink, the fastening element is arranged in the counter sink, and the two ends of the fastening element are respectively in contact with the nut and the anti-loosing element. The locking structure can effectively prevent the problem that the nut is dropped, thus causing that the locking fails; and when being applied to a projection lamp, the locking structure can effectively prevent loss caused by invalid locking between a lamp holder and a lamp shade fails.

A solenoid valve includes a main valve having a valve member which switches over flow paths by contacting with and separating from valve seats in a valve casing, a solenoid operating portion to drive the valve member, and a manually-operated device including an operation rod air-tightly and slidably accommodated in a rod-insertion hole provided in the valve casing and abuts against an end surface of a movable iron core to push the movable iron core in its axial direction, and an operating member movably mounted to a mounting surface of the valve casing to drive the operation rod.

The invention relates to a sealing mechanism, in particular to an automatic adjusting and sealing mechanism for an uplift riser tube of an anti-gravity casting machine, which comprises a riser tube and a middle partition plate, wherein the riser tube is integrally formed by a flange and a tube body from top to bottom. The mechanism further comprises a sealing gasket, a riser tube supporting plateand an elastic element, wherein an insertion hole is formed in the middle of the riser tube supporting plate; the elastic element with a through hole is arranged on the upper end face of the riser tube supporting plate; the tube body is arranged in the insertion hole and the through hole in a penetrating mode; the tube body is fixedly connected with the riser tube supporting plate; the flange makes contact with the elastic element; the middle partition plate is inserted into the upper end face of the flange; and the middle partition plate is connected with the flange in a sealed mode. The problem that sealing of the riser tube fails due to deformation of the middle partition plate is solved, and smooth differential pressure pouring can be guaranteed.

The invention discloses a pressure device for airtightness detection of a casing, and a manufacturing method of the pressure device. The pressure device for the detection comprises a casing body formed in a manner that a first casing is connected with a second casing, wherein the tail end of the second casing is closed; two packer components set by the action of high pressure gas and pressure energy storage rings are arranged on the first casing and the second casing correspondingly; a first one-way valve and a second one-way valve that are opposite in conduction direction are arranged on the casing body between the two packer components; the first casing is provided with an annular hollow structure; and the second casing is provided with a hollow structure. The pressure device for the detection is convenient to use and carry, and can detect the airtightness of the casing on a construction site.

The invention belongs to the technical field of shaft sealing, in particular to a sealing structure of an extension end of a motor shaft. The structure comprises a motor end cover and a motor shaft extension end. The motor shaft extension end is arranged on the motor end cover through a bearing. A double oil sealing structure is arranged between the motor end cover and the motor shaft extension end. The double oil sealing structure comprises an oil sealing seat connected with the motor end cover and an outer oil sealing and an inner oil sealing arranged in the oil sealing seat. The outer oil sealing and an inner oil sealing are arranged opposite with each other and are matched with the oil sealing seat in interference mode. An oil storage chamber is arranged between the outer oil sealing and the inner oil sealing and an oil sealing ring is accommodated in the oil storage chamber. By designing two oil sealings, when there is no lubricating medium inside the motor, an oil storage space is formed in the middle of the two oil sealings and lubricating oil is injected into the middle of the two oil sealings, so that the lubricating environment necessary for normal operation of the oil sealing can be provided, so that the service life and the sealing reliability of the oil sealing are prolonged.

The invention relates to the field of sealing and particularly relates to a rubber barrel with relatively hard upper and lower end parts, which is used in an oil exploitation process and can bear high temperature and high pressure, a packer and a bridge plug. According to one aspect of the invention, the rubber barrel is provided; and the hardness of the upper end part of the rubber barrel is greater than that of the middle part of the rubber barrel, so that the deformation of the middle part in the radial direction is greater than that of the upper end part in the radial direction when the upper end part bears first axial pressure. The hardness of the upper end part of the rubber barrel is greater than that of the middle part of the rubber barrel, so that the upper end part is almost used for transmitting the first axial pressure to the middle part and the lower end part, but not utilizes the first axial pressure to self radial deformation when the upper end part bears the first axial pressure. Therefore, the middle part and the lower end part have the radial deformation when the relatively small first axial pressure is used, and the sealing of the whole rubber barrel is realized.

The invention relates to a honeycomb spiral radial brush-type labyrinth split seal. The honeycomb spiral radial brush-type labyrinth split seal comprises a shaft sleeve assembly, a honeycomb seal body assembly, a driving end brush-type seal assembly and an impeller end brush-type seal assembly, wherein the driving end brush-type seal assembly and the impeller end brush-type seal assembly are arranged at the two ends of the honeycomb seal body assembly. An original seal length is nearly doubled, and the sealing effect is effectively enhanced. The shaft sleeve assembly, the honeycomb seal body assembly, the driving end brush-type seal assembly and the impeller end brush-type seal assembly are all of a split structure. Due to the fact that all the assemblies are of the split structure, the applied range is made wider. A shaft sleeve is in a split type and is closed at the outer circle position and the end face position of the shaft sleeve, so that strength of the shaft sleeve is increased, and the phenomenon that the shaft sleeve can be split due to insufficient closing force in the high-speed rotating process is prevented. Moreover, the middle part and the driving end of the shaft sleeve are both provided with bosses, due to the facts that a spiral groove and seal teeth arranged in the middle section boss are matched, and a groove formed in the back of an impeller and the impeller end brush-type seal assembly are also matched, the original seal length is nearly doubled, and the sealing effect is greatly enhanced. The structure is novel and the practicality is high.

The present invention discloses a method using a low-melting-point alloy for sealing a micro heat pipe filling hole, and the method is used for heat pipe packaging manufacturing and device heat dissipation, and belongs to the field of device packaging and heat dissipation. Before a working medium is filled, the low-melting-point alloy is preset in a silicon-based micro heat pipe, after completion of vacuumizing operation, a vacuumizing hole is sealed by low-melting-point alloy melting and solidification; and after the working medium filling proceeds, a working medium filling hole is sealed by low-melting-point alloy melting and solidification to complete the entire micro heat pipe filling operation. A micro heat pipe sealed with the method is free of a sealant, the method is suitable for solvents such as ethanol, acetone and the like as the filling working medium, the micro heat pipe has long-term sealing effect; and by use of the low-melting-point alloy for sealing, impact on micro heat pipe heat transfer properties due to material gas release can be reduced.