35results about How to "Increased sealing security" patented technology

A sealing arrangement for a rotor of a turbomachine includes a blade (2), a heat shield (3, 4) and a sealing element (5, 6) for sealing between the blade (2) and the heat shield (3, 4) when the blade (2), heat shield (3, 4) and sealing element (5, 6) are assembled for use in the rotor. The heat shield (3, 4) includes a first slot (7, 8) for accommodating a first member (11, 12) of the sealing element (5, 6), and a root portion of the blade (2) includes a second and third slot (9, 10) for accommodating a second member (13, 14) of the sealing element (5, 6). The first slot (7, 8) extends in a direction which is substantially mutually perpendicular to a direction in which the second and third slot (9) extends, and the first member (11, 12) extends in a direction which is substantially mutually perpendicular to a direction in which the second member (13, 14) extends.

A liner-less seal application system is programmed to generate a real time seal, the serial number of which is data-matched with product label data on an approaching article. The image is printed onto the adhesive surface of the sealing tape. A vacuum drive belt has both low and high vacuum sections to assist in moving the sealing tape along a vacuum drive belt toward the print head. The real-time seal is printed while the belt drive indexes the tape, and the cutting action is done while the system collects data and the belt drive is stationary. There is only one stepper motor employed to drive the vacuum belt. The vacuum belt drive pulls the tape from the unwind assembly and feeds the tape through the print head and onto the vacuum drum applicator. A perforator device bursts perforation across the round element of the seal image, as an anti-tampering measure.

The invention belongs to a sealed leakage-resistant thermal couple (resistor), which consists of a junction box, a protection sleeve and a temperature measuring element. The protection sleeve consists of an upper protection sleeve and a lower protection sleeve which are arranged coaxially up and down. The upper end of the upper protection sleeve is fixedly arranged on the junction box; the temperature measuring element is coaxially arranged in the protection sleeve and the upper end of the temperature measuring element is fixedly arranged on the junction box. A leakage-resistant sealing base is fixedly arranged between the upper protection sleeve and the lower protection sleeve coaxially. The upper protection sleeve is coaxially arranged at the upper end of the leakage-resistant sealing base through a movable nut; the lower protection sleeve is fixedly arranged at the lower end of the leakage-resistant sealing base coaxially; and a pressing leakage-resistant device for the temperature measuring element is arranged on the leakage-resistant sealing base. The sealed leakage-resistant thermal couple (resistor) has the advantages of simple structure, scientific and reasonable design, adjustable length of the temperature measuring element of the thermal couple (resistor), separate replacement of the temperature measuring element, higher sealing safety, convenient operation, and long service life.

Provided is a shield portal sealing device capable of adjusting positions and an off-center installation method thereof. The device is installed outside a shield portal, and comprises a steel sleeve, a joint sealing connecting structure and a shield sealing connecting structure, wherein the steel sleeve comprises a round steel cylinder, a portal end connecting steel plate, a tip sealing steel plate, a steel skeleton and a grouting pipe; the joint sealing connecting structure includes embedded parts, a pressing plate, a connecting bolt A and a portal end sealing ring; the shield sealing connecting structure comprises a sealing rubber plate, an arc pressing plate and a turning plate which are successively arranged on the outer side of the tip sealing steel plate, and a connecting bolt B for connecting the sealing rubber plate, arc pressing plate and turning plate on the tip sealing steel plate. The shield portal sealing device can effectively seal the shield portal, and correct or adjust the portal offset to make the shield tunneling attitude more flexible. The method can avoid the adjustment of a launching section tunnel line within a certain range of the deviation value, the portal can easily be shifted a certain distance in an extended mode to a needed direction, and meanwhile the characteristics of the portal center can be quickly adjusted.

The invention discloses a novel flange seal washer. The section of the novel flange seal washer is of a combined structure characterized in that an outer circle part which is rectangular is combined with an inner circle part which is in an O shape. According to the dimension of the section, the rectangular length is a, the width is b, and the radius of the O shape is r, wherein 2r is larger than or equal to b. Accordingly, the flange seal washer is a combined body of a flange ring and an O-shaped ring, the siamesed annular O-shaped ring is designed on the inner ring of a slab type rubber washer, and the sealing performance of the flange seal washer is enhanced due to the shape of the section. The novel flange seal washer has the beneficial effects of being precise to mount and locate and high in sealing safety and stability, and meanwhile the pressure resistance can reach 6 Mpa and is far higher than that of an existing seal washer.

The invention discloses a cover which comprises a rotary cover, a lower cover and a water outlet pipe. The lower cover is provided with a water outlet; the cover is characterized in that the water outlet pipe penetrates through the rotary cover and is propped against the bottom of the lower cover; the water outlet pipe can seal the water outlet; the rotary cover comprises a casing and a buckling part positioned in the casing; the lower cover is provided with a ring-shaped groove for containing the buckling part; at least one axial notch groove is formed in the outer wall of the buckling part; the cover is also provided with a lifting valve; the lifting valve is connected with the ring-shaped groove through threads; at least one lug boss is formed on the outer wall of the lifting valve; the lug boss is arranged in the notch groove; and the lifting valve is connected with the water outlet pipe. The cover has a simple structure, is convenient to operate, is not separated from a container, such as a cup, a kettle and a bottle, during sealing, opening and closing, is low in manufacture cost, ensures that a sealing ring and the water outlet pipe integrally form a whole body through injection moulding, has high connection strength, is not easy to drop off, and has high sealing safety.

The invention relates to a monolithic plastic bottle cap. A barb-shaped external seal with a circular arc-shaped end is arranged on the side wall of the bottle cap; when in service, an external sealing ring is matched with the external wall of a bottle mouth, and the diameter of the external sealing ring is smaller than that of the bottle mouth; the external seal is arranged at the outer ring of an inner top surface ring-shaped top seal; a ring-shaped inner plug is arranged on the inner top surface of the bottle cap and positioned at the inner ring of the ring-shaped top seal; and the outer surface of the ring-shaped inner plug is circular arc-shaped, and the maximum diameter of the circular arc is larger than the diameter of the bottle mouth matched therewith. When in service, the ring-shaped top seal is matched with the top surface of the bottle mouth. The inventive sealing structure is composed of three portions: the first portion is the ring-shaped inner plug; the second portion is the end part of the ring-shaped top seal, which is a surface just matched with the surface of the top of the bottle mouth; and the third portion is the external seal. The barb-shaped structure only generates axial acting force when the bottle cap is matched with the bottle mouth, and the bottle mouth can obtain the same force in any contact positions.

The invention discloses a dry transformer having the protection dehumidifying function. The dry transformer includes a protection device, shunting connection pieces, a high voltage lead, a high voltage insulator, a conductive row, an upper clamp, a low voltage coil, a high voltage coil, a base protection shell and a connecting frame. The dry type transformer having the protection dehumidifying function is advantaged in that a lead coil is positioned and mounted in the operating position through a fixing plate, a pressing member is closely attached to a high voltage lead end, moisture in the air is then sucked up by an absorbent member, that surrounding of the high voltage lead and each set of the shunting connection pieces is in a dry state is guaranteed, discharge accidents caused by excessive moisture in the air is prevented, safety of the dry transformer is improved, a clamping plate and a connecting panel are closely attached to a lower end of the transformer to protect the bottomof the transformer, small animals are prevented from entering a transformer room through a cable trench below the transformer in operation, safety and efficiency of transformer operation are improved,and occurrence of accidents is reduced.

The invention relates to a high-temperature and high-voltage resistance subsection capacitive level transmitter, which comprises an electric signal processor and a sensor, wherein the sensor is provided with a tubular rigid insulation sleeve with the sealed support bottom end, a plurality of mutually insulated tubular electrodes are arranged from bottom to top in a way of tightly pasting the inner wall of the sleeve in the tubular rigid insulation sleeve, each section of tubular electrode is respectively and electrically connected with the electric signal processor through a connection conducting wire, a flange-shaped connecting body is arranged at a position of the outer wall of the tubular rigid insulation sleeve near the near opening end, and a sealing pad is arranged between the flange-shaped connecting body and the tubular rigid insulation sleeve. The high-temperature and high-voltage resistance subsection capacitive level transmitter has the advantages that the structure is simple and reliable, the simultaneous measurement of various medium interfaces in a container can be realized, in addition, different installation requirements can be met, and the transmitter belongs to the ideal high-temperature and high-voltage resistance subsection capacitive level transmitter.

The invention relates to the technical field of flue gas treatment equipment application, and discloses a flue gas low-temperature denitration and dust sulfur integrated treatment device for non-electric industry. The device comprises a bottom plate, wherein the top of the bottom plate is fixedly connected with a base; the top of the base is fixedly connected with a heat exchanger shell; the leftside and the right side of the bottom of the heat exchanger shell are fixedly connected with flue gas conveying pipes; the left side and the right side of the heat exchanger shell are fixedly connected with low-temperature conveying pipes positioned at the tops of the flue gas conveying pipes; and the other ends, far away from the flue gas conveying pipes, of the low-temperature conveying pipes are fixedly connected with sealing sleeves. The flue gas low-temperature denitration and dust sulfur integrated treatment device for the non-electric industry is very efficient and rapid in flue gas treatment; and meanwhile, the integrated treatment device is simple in overall structure, so that the device is good in practicability and convenient to popularize and use, and therefore the problems that now the flue gas integrated treatment device is less in application and the existing equipment is relatively numerous and jumbled are effectively solved.

The invention discloses a nuclear reactor safety rod with a rotating mechanism and a sealing structure of the safety rod. The nuclear reactor safety rod comprises a travel chamber which is mainly composed of a pressure chamber seal head of a nuclear reactor, a travel shell fixed on the outer surface of the pressure chamber seal head, and a travel top cover, wherein a safety rod of which one end stretches into the nuclear reactor is arranged in the travel chamber; the other end of the safety rod is connected with a transmission shaft; a rotating mechanism is arranged on the top of the transmission shaft; a lifting control mechanism is arranged in the middle of the transmission shaft; and a sealing structure is formed in the joint of the safety rod and the pressure chamber seal head in the nuclear reactor. According to the nuclear reactor safety rod disclosed by the invention, the rotating mechanism of the safety rod in the nuclear reactor is increased, the sealing structure of the safety rod is improved, the safety rod is rotated by virtue of the rotating mechanism so as to cause contact surface variation with the pressure chamber seal head, eccentric wear of the safety rod caused by shake of the nuclear reactor is avoided, and the service life is prolonged. Meanwhile, the sealing structure around the safety rod is improved, the safety rod is convenient to rotate, and zero leakage of inside heavy water is realized.

The invention discloses an on-line operation sealing device with a double-layer sealing function for an air duct, the on-line operation sealing device is used for connecting an air inlet pipe and an air outlet pipe, the on-line operation sealing device comprises a shell, an adjusting device and a flow guiding device, two ends of the shell are respectively communicated with the air inlet pipe and the air outlet pipe, the shell is connected with the adjusting device, the flow guiding device is movably connected with the shell, and the shell is connected with the adjusting device. The shell comprises a fixed seat and a mounting seat, a mounting groove is formed in the fixed seat, one end of the mounting seat is inserted into the mounting groove, a clamping groove is formed in the fixed seat, one end of the air inlet pipe is inserted into the clamping groove, one side of the mounting seat is fixedly connected with the air outlet pipe, one end of the fixed seat is inserted into an outlet of the air inlet pipe, and a negative pressure flow channel is formed in the fixed seat; the negative pressure flow channel is communicated with the sealing cavity, the flow guiding device comprises a sealing ring, the sealing ring is arranged in the sealing cavity, the sealing cavity is arranged in a quincunx shape and is sealed through the sealing ring, the sealing cavity is designed in the quincunx shape, sealing wedge faces are added, and the air-tight sealing performance is improved.

The invention belongs to the technical field of goggles, and discloses goggles and a production method thereof. The goggles comprise a main lens body integrally formed by 3D printing, a flexible washer and an elastic band; the main lens body integrally formed by 3D printing comprises a lens frame, a main lens, side lenses, and a lens holder; the lens frame is a cover-shaped frame as a whole, the main lens is integrally formed at the front side of the cover-shaped frame, the side lenses are integrally formed at the left and right sides of the cover-shaped frame, the lens holder is integrally formed at the lower side of the cover-shaped frame, and an eyebrow-eye contact part is integrally formed at the rear side of the cover-shaped frame; the lens holder is provided with a nose bridge fitting part; the flexible washer is embedded in the eyebrow-eye contact part; and two ends of the elastic band are respectively connected to the left and right sides of the cover-shaped frame. According tothe goggles and the production method thereof provided by the invention, the production efficiency can be improved.

The invention discloses a safety manhole cover for a ship and a use method thereof and belongs to the technical field of ship equipment. The safety manhole cover for the ship comprises a cover plate,a pair of handles, a sealing ring and a rubber sealing ring used for sealing, wherein the pair of handles is hinged to the cover plate; multiple connecting bolts distributed in the form of an annulararray are connected between the cover plate and the sealing ring; a heating groove is dug in one end, far away from the cover plate, of the sealing ring; an electric heating plate is mounted in the heating groove; a heat conducting net sleeves the electric heating plate; the sealing ring is in contact with the rubber sealing ring; a heat insulating mounting plate is fixedly connected to the lowerend of the electric heating plate; a circuit board is arranged in the heat insulating mounting plate; a single chip microcomputer is embedded on the circuit board; the single chip microcomputer is electrically connected with the circuit board; and multiple temperature sensors are mounted in the sealing ring. The safety manhole cover for the ship can be automatically adjusted for temperature changenear the rubber sealing ring; the rubber sealing ring can be automatically heated when the temperature is lower so that an optimal use temperature is always kept; and the sealing safety at the manhole cover is obviously enhanced.

An operating means such as for example a crown, with an element rigid with the housing and with an operable element which is movable with respect to this. Between these two elements there is arranged a lip seal with an elastic lip, which bears on the element rigid with the housing and delimits the timepiece inner space to the surroundings. By way of the fact that the lip is led in the direction of the surroundings conically onto the element rigid with the housing and lies on this element with pretensioning, on the one hand with an inner space excess pressure it may release itself from the element rigid with the housing for the purpose of pressure compensation between the inner space and the surroundings and on the other hand with a surrounding excess pressure it is more strongly pressed on the element rigid with the housing for the purpose of sealing the inner space with respect to the surroundings.

The invention discloses a centrifugal type slurry pump. The centrifugal type slurry pump comprises a pump cover, a pump shell connected with the pump cover, a bearing base connected with the pump shell, an impeller positioned in the pump shell and a rotary main shaft connected with the impeller, wherein the rotary main shaft extends out of the pump shell, and is connected with the bearing base; a shaft seal is arranged on a contact part of the rotary main shaft and the pump shell; the shaft seal comprises a sealing box connected with the pump shell, a sealing box pressure cover, a main seal close to the pump shell side, and a secondary seal at the rear side of the main seal; the secondary seal is an external type mechanical seal; the main seal is formed by superposing a plurality of lip-shaped sealing rings; the lip-shaped sealing rings are sealing rings with filter devices; each sealing ring with the filter device comprises a ring-shaped rubber basal body and a reinforcing framework embedded into the rubber basal body, wherein a sealing lip is arranged at the inner ring of the rubber basal body, one side of the rubber basal body is a flow-in side, the other side of the rubber basal body is a flow-out side, a filter part is arranged between the rubber basal body and the sealing lip, and the filter part comprises an accommodating cavity filled with a filter element body and a penetrating channel for enabling the accommodating cavity to communicate with the flow-out side of the rubber basal body;and slurry enters each accommodating cavity from the corresponding flow-in side, and is filtered through the corresponding filter element body, so that filtered clean liquor enters the corresponding flow-out side from the corresponding penetrating channel.

The invention provides a matte type high-barrier flat-bottom-zipper nut packaging bag and a preparation method thereof. The nut packaging bag comprises a bag body and a sealing zipper chains, the bagbody is composed of a front bag body, a rear bag body and a bottom layer, the front bag body and the rear bag body are arranged on the two sides of the bottom layer respectively, the upper ends of thefront bag body and the rear bag body are connected through sealing zipper chains, the front bag body, the rear bag body and the bottom layer are the same in composition and structure, and the front bag body comprises a base layer, an aluminum plating layer, a high-barrier polypropylene film layer, an adhesive layer, an ink layer, a matte layer and a heat-sealing film layer. According to the nut packaging bag, the mechanical strength of the bag body can be improved through the high-barrier polypropylene film layer and the aluminum plating layer, and has good moisture-proof performance, light-shielding performance, ultraviolet-proof performance and sealing performance, and the storing life of the nut in the bag body can be prolonged, and the combined airtightness between the front bag body,the rear bag body and the bottom layer can be improved through the concave folding lines below the front bag body and the rear bag body and the convex folding lines on the two sides of the upper surface of the bottom layer.

The invention discloses a fishbone-shaped winding type gasket in the field of winding type gaskets. The fishbone-shaped winding type gasket comprises a plurality of winding parts which are different in radius and are concentrically arranged, each winding part comprises a plurality of elastic metal belts which are tightly wound into a ring shape in the circumferential direction, the center of each elastic metal belt is bent, the inclined faces of the two sides of each elastic metal belt incline towards the medium pressure direction, and each inclined face is provided with at least one bent part. According to the fishbone-shaped winding type gasket, a sealing interface formed by the plurality of winding parts is more uniform in stress and higher in sealing safety and reliability, the plurality of winding parts can share pressure and better bear higher pressure and impact fluctuation, a steel belt with multiple bending points or bent faces is adopted for winding, stress concentration is not prone to being generated, the secondary compression and springback performance can be provided, and the compression and springback variables are greatly improved.

The invention discloses an automatic pressing pump test device. The traditional test device has low efficiency and high cost. An installation base of the automatic pressing pump test device is used for installing and fixing a suction pipe part and an exhaust pipe part, and providing a placement platform for a tested pump; the tested pump is positioned between the suction pipe part and the exhaustpipe part which are used as pipeline channels of a test medium and also used as pressing members of the tested pump; a piston of the exhaust pipe part can be flexed within a certain range when the pressure of a cylinder cavity changes so as to realize pre-pressing, working pressing and concession of the tested pump; and the working pressing of the piston to the tested pump is automatically realized by the pressure of an exhaust hole of the tested pump. In the whole test process, the pump is placed on the corresponding position and centered, the connection and the separation of the pump and a test pipeline system can be completed rapidly; meanwhile, because the pressing force of the working pressing is from the tested pump, additional energy sources can not be provided, thus the energy is saved and the environment is protected.

The invention provides a reversing device for fracturing operation. The reversing device comprises a body, a cock, a valve rod, a piston and a first handle. The cock is assembled in a cavity of the body, a fracturing mixed liquid inlet is formed in the top end of the cock, and a first fracturing mixed liquid outlet communicating with the fracturing mixed liquid inlet is formed in the side portionof the cock. At least two sets of second fracturing mixed liquid outlets capable of rotationally communicating with the first fracturing mixed liquid outlet are formed in the side portion of the body.The piston is connected to the bottom end of the body in a sealed manner, and the interior of the piston is in threaded connection with the valve rod. The end, stretching into the body, of the valverod is in threaded connection with the bottom end of the cock, and the first handle is fixed to the end, stretching out of the body, of the valve rod. According to the reversing device, a traditionalfive-way valve and a gate valve are fused into a whole, fluid leakage points are reduced, the overall structure is optimized, cost is greatly reduced, sealing is facilitated, operation is simple, andthe installing and maintaining time is saved.

The invention provides a hydraulic splint valve, which includes a central splint body and side splint bodies symmetrically arranged on both sides of the central splint body. The inside of the central splint body is a hollow structure. One side of the face is provided with a fluid passage for the fluid to pass through, and a movable plate capable of opening or closing the fluid passage is provided inside the central splint body, and the movable plate passes through the hydraulic pressure provided on one side of the central splint body. drive mechanism movement.

The invention belongs to the field of machinery, and in particular relates to a cam sleeve power shaft-driven hollow cam sleeve impact box for implementing a method for driving rotation of a hollow cam sleeve by a cam sleeve power shaft. The cam sleeve power shaft-driven hollow cam sleeve impact box comprises an impact box, a hollow cam sleeve, hollow cam sleeve bearings, a cam sleeve power shaft,power shaft bearings, connecting rods, guiding components, a power source component, impact heads and the like, wherein a left supporting transmission bearing hole for supporting the cam sleeve powershaft is formed in a left side box plate, and a right supporting transmission bearing hole for supporting the cam sleeve power shaft is formed in a right side box plate; one end of the cam sleeve power shaft runs through the left supporting transmission bearing hole, then is inserted into the hollow cam sleeve, and then is arranged on the power shaft bearing of the right supporting transmission bearing hole; the power source component drives the cam sleeve power shaft to rotate; the cam sleeve power shaft drives the hollow cam sleeve; the hollow cam sleeve drives the connecting rods to move;the connecting rods drive the guiding components and the impact heads to achieve reciprocating impact. The cam sleeve power shaft-driven hollow cam sleeve impact box is simple in structure, does not use easy-shed and quick-wear parts, the service life of the impact box is improved, and the safety and the reliability of equipment are not guaranteed.