56results about How to "Improve the sealing level" patented technology

A cleaning assembly (2) for an optical device (16) includes a shaft (14) configured for supporting the optical device within an enclosure (4) that is adapted for rotation about the shaft. At least one first sealing element (18) is disposed between the shaft and a mating surface of the enclosure for preventing fluid leakage therethrough. At least one optically transparent window (8) is mounted in association with the enclosure (4), and at least one cleaning element (9, 11) is coupled to the shaft for cleaning a surface of the window (8). The cleaning assembly may include a moisture barrier in the form of a pressure-influenced member (58) such as a bellows (40) having a body of expandable and retractable-volume for containing air that diffuses therein, while equalizing pressure on opposite sides of the barrier.

The invention relates to the technical field of communication and provides a closed type optical fiber pass-through device and a processing method thereof. The device comprises a flange, an installation plate and optical fiber pass-through devices, wherein each of the optical fiber pass-through devices comprises a main body with a through hole, a ceramic inserted core, and two sleeves; the ceramic inserted core is bonded inside the through hole; the ceramic inserted core is provided with a light-permeable bare optical fiber encapsulated with glue; the two sleeves are positioned inside the through hole and sleeve on two ends of the ceramic inserted core. According to the device, the airtightness of the optical fiber pass-through device inside is guaranteed through glue binding sealing mode inside the optical fiber pass-through device; threaded connection is adopted between the optical fiber pass-through device main body and the installation plate, and screw thread assembling play the role of sealing so that the sealing grade of the closed type optical fiber pass-through device is increased, and the sealing effect is good; meanwhile, due to the simple overall structure of the closed type optical fiber pass-through device, less space occupation, simple processing method and small cost, large scale production and application are facilitated.

The invention relates to a heat pipe generator air-cooling cooling device which comprises a generator, and the generator comprises a stator, a rotator and a rotating shaft; the innovation point is in that: the generator also comprises a fan, a heat exchanger assembly, a wind guide cover and a cooling assembly, the cooling assembly is arranged on the periphery of the stator of the generator, the outlet of the fan is communicated with one end of the heat exchanger assembly, and the wind guide cover is communicated with the other end of the heat exchanger assembly; the heat exchanger assembly comprises a heat exchanger shell and condenser pipes, a plurality of condenser pipes are arranged in the heat exchanger shell, and the condenser pipe has a liquid inlet and a liquid outlet; the cooling assembly comprises a cooling shell and evaporating pipes, a plurality of evaporating pipes are arranged in the cooling shell, and the cooling shell is fixedly connected with the periphery of the stator of the generator; and the liquid outlets of the condenser pipes of the heat exchanger assembly are respectively communicated with corresponding evaporating pipes in the cooling shell. According to the invention, the device provided by the invention has advantages of simple structure, high cooling efficiency and low energy consumption.

The invention discloses a fixed radial sealing piece. The fixed radial sealing piece is arranged between an upper shell and a lower shell which are correspondingly matched and connected with each other, comprises a body made of a flexible material, and is characterized in that: at least one first groove capable of tolerating the body to be deformed by force in the axial direction is formed on the body; and the section of the first groove can be a concave arc, a triangle, a trapezoid, a wooden club, a square or a rectangle. By using the structural design of the sealing piece of the invention, relatively large axial deformation can be tolerated, so that relatively large clearance fit between the upper shell and the lower shell is not needed, assembly is convenient, meanwhile, the machining precision of the fitting surfaces of the upper and lower shells can be reduced, and the machining cost can be saved; and the abrasive damage of the sealing piece in the rotational locking process of the upper and lower shells is relatively small, so that sealing reliability is further improved.

The invention relates to an injection-molded wire harness and a molding method. The wire harness comprises a terminal and at least one conductor, wherein one end of the terminal is connected with an electrical loop of an electric device, the other end of the terminal is connected with the conductor, and the wire harness is provided with a protection layer which is formed by injection molding and wraps the conductor, and at least one positioning device which is formed by injection molding and is used for fixing the position of the wire harness or/and a sealing device for water prevention. According to the invention, manual operation can be reduced, the consistency of wire harness products is improved, the production cost of the wire harness products is reduced, and the service life of the wire harness is prolonged.

The present invention generally relates to a method for manufacturing an improved solar cell module, more particularly to a method for manufacturing the improved solar cell module that may not happen problems of power leakage and short circuit and save the cost to manufacturing.

The invention relates to an eccentric/concentric combined sealing valve seat which is arranged in the body channel mouth of a three-way change valve comprising a valve body, a spherical double-channel valve plug, a valve cap and a start-stop shaft. The eccentric/concentric combined sealing valve seat is formed by concentric sealing valve seats and eccentric sealing valve seats which are arranged at the two ends of the channel mouths of the valve body and the valve plug. The valve seat and the valve plug are fit and sealed by spring pre-tightening force and medium pressure. The eccentric/concentric combined sealing valve seat comprises eccentric sealing valve seat bodies, concentric sealing valve seat bodies, plate springs, bearing rings, eccentric sealing rings, valve seat pressure caps, sealing gaskets, adjusting gaskets, eccentric soft seals and concentric sealing rings. The eccentric/concentric combined sealing valve seat ensures high valve sealing grade, can achieve zero leakage, thoroughly eliminates the problems of valve blocking and inflexible opening, has the service life as long as more than 200000 times, has good use effect on the chemical pipelines and does not have faults till now.

The embodiment of the invention discloses a mobile terminal. The mobile terminal comprises: a display screen, a back cover, a middle frame, a rotating module and a driving mechanism, wherein the middle frame comprises a fixed part and a movable part; the fixed part is fixedly connected with the display screen and the back cover; the movable part is connected with the rotating module; the driving mechanism is arranged between the display screen and the back cover; notches are formed in the top of the back cover, the rotating module is arranged on the notches and comprises a camera, the outer surface of the rotating module and the back cover are spliced to form the outer surface of the mobile terminal; the driving mechanism is used for driving the rotating module to ascend, descend and rotate, and therefore the camera has the functions of a rear camera and a front camera; in the process that the driving mechanism drives the rotating module to ascend and descend, the moving part and the rotating module ascend and descend synchronously; when the rotating module is contained in the notch, the moving part and the fixed part are spliced to form a middle frame.

The invention relates to a cascading valve clack type adjusting valve, and belongs to the field of thermal power and nuclear power valves. The cascading valve clack type adjusting valve is arranged on a water vapor system pipeline of a thermal power and nuclear power unit and is important equipment for adjusting flow, pressure and temperature of media. The cascading valve clack type adjusting valve is composed of a valve clack, a spring, an auxiliary valve clack, a valve rod, a valve clack pressing cover and the like, and the auxiliary valve clack and the valve rod are of an integral structure. When the valve is opened, the auxiliary valve clack is firstly opened, an upper cavity and a lower cavity of the valve clack are communicated, the valve clack is changed to be of a balance structure, and the valve rod drives the valve clack to move vertically through the valve clack pressing cover and the spring. When the valve is closed, the valve rod compresses the spring, the auxiliary valve clack compresses the inner sealing face of the valve clack, the sealing face on the lower portion of the valve clack compresses the sealing face of a valve seat, the two sealing faces are sealed, and the valve clack is changed to be of an unbalance structure. Opening force of the valve is effectively reduced, and sealing performance in the valve closing process is improved.

The invention relates to a hollow blade shaft-end sealing mechanism which comprises a packing seal and a mechanical seal arranged in the rear of the packing seal. A material collection box is arranged between the packing seal and the mechanical seal and communicated with the same, and a dust ring is arranged at the communicating position of the tail end of the material collection box and the mechanical seal. The material collection box is arranged between the packing seal and the mechanical seal, a traditional integral combination mode is changed to a split mode, the purpose is to separate the packing seal from the mechanical seal by the material collection box, the probability that solid granular matters such as dust enter the mechanical seal is lowered greatly by the aid of the material collection box, and accordingly sealing performance of the mechanical seal is improved, reliability of two-stage seal is improved, and sealing class is increased; meanwhile, by the aid of the material collection box, emptying time is prolonged, operation amount of workers is decreased, the workers can view material level in the material collection box through a sight glass hole, an empty valve is turned on to discharge excess materials after the material level reaches a certain height, and the hollow blade shaft-end sealing mechanism has high practicality.

The invention relates to a back-up buzzer assembly; a connector is plugged in a plug port of a housing; the connector and the plug port are plugged in a snap fastener mode; a power plug pin of the connector is an embedded or injection molding integrated structure; the connector is plugged with a fixed seat through a snap fastener in the housing; the fixed seat is provided with a circuit control board, and fasteners can combine the connector, the housing with the fixed seat; the power plug pin is connected with the circuit control board through a power line, and connected with a buzzer; a shield is embedded through a seal ring. The connector is plugged with the plug port through the snap fastener, and the power plug pin of the connector is the embedded or injection molding structure, thus forming a first defense line; the connector is plugged with the fixed seat through the snap fastener in the housing, so a second defense line is formed to provide dustproof and waterproof effects; the two defense lines can generate a protection level as IP6K7, which is higher than same type products.

The invention discloses a sealing inspection well socket and relates to the field of sealing connection devices of plastic inspection well sockets. The sealing inspection well socket comprises a socket body. The socket body comprises a fixed socket body and a removable socket body. The removable socket body is composed of an outer sleeve, an inner sleeve and an annular groove formed between the inner sleeve and the outer sleeve. The outer wall of the fixed socket body is provided with external threads. The inner wall of the outer sleeve is provided with internal threads corresponding to the external threads. The inner diameter of the fixed socket body is larger than the outer diameter of the inner sleeve. The sealing inspection well socket can compress a sealing ring between a pipe and the socket through the threads to reduce the gap between the pipe and the socket. The sealing inspection well socket is good in sealing performance and easy to operate.

The invention relates to a sealing ring for rotating shaft seal. The sealing ring is used for being mounted on a rotating shaft and embedded into a sealing ring groove of a shell, and comprises a rubber main body, wherein a sleeving hole through which the rotating shaft is in interference fit is formed in the center of the rubber main body; the root is connected with the rubber main body; a first circular sealing lip and a second circular sealing lip are arranged along the axial direction of the rubber main body at an interval; an included angle between a lip surface of each of the first circular sealing lip and the second circular sealing lip and the axis of the rubber main body is an acute angle; an outer edge of the first circular sealing lip is a first sealing part in squeeze fit with the groove bottom of the sealing ring groove; and an outer edge of the second circular sealing lip is a second sealing part in squeeze fit with the side wall of the sealing ring groove. According to the sealing ring for rotating shaft seal, the sealing property of a shaft extension position can be effectively improved. The invention also relates to a shaft sealing structure adopting the sealing ring for shaft seal.

The invention belongs to the technical field of pipeline engineering, and particularly relates to a pressurizing pilot-operated type high-temperature and high-pressure labyrinth valve. According to the technical scheme, a pressurizing type pilot structure is introduced, a pilot valve is closed, unbalanced force acts on the upper surface of a main valve element when the valve is in a closed state,the sealing specific pressure of a sealing pair is increased, and the sealing grade is improved; by opening the pilot valve, pressure balance of the upper and lower surfaces of a main valve element inan adjusting state is achieved, the size of an executing mechanism is reduced, and action time is shortened; a flow equalizing sleeve is introduced to realize uniform circumferential flow of a mediumand prevent the medium from directly impacting a valve rod; and the flow equalizing sleeve and a valve element guide face form guiding, and the valve is stable in action and free of jamming.

Labyrinth seal for a turbine engine, in particular of an aircraft, including a rotor element rotating about an axis of rotation (A), and a stator element extending around the rotor element (14), the rotor element including a series of annular lip(s) extending radially outwards and surrounded by at least one abradable element carried by the stator element, each lip comprising an inner peripheral body portion, an outer peripheral body portion, an upstream annular face of impact of an air flow during operation and a downstream annular face, wherein at least one lip includes, on the inner peripheral body portion thereof and/or the outer peripheral body portion thereof, through-orifices for the passage of air extending between the upstream and downstream annular faces.

The invention relates to an aging and insulation testing device for a vacuum arc-extinguishing chamber. The aging and insulation testing device for the vacuum arc-extinguishing chamber comprises a shell, the shell is provided with an inflation cavity for accommodating the vacuum arc-extinguishing chamber to be aged or subjected to insulation testing, a conductive connecting rod is used for being fixedly connected with a movable conductive rod of a vacuum arc-extinguishing chamber to be aged, the shell is provided with a connecting rod penetrating-out channel for the conductive connecting rod to penetrate out, and a direct-acting sealing structure is arranged between the connecting rod penetrating-out channel and the peripheral surface of the conductive connecting rod. The sealing peripheral surface of the conductive connecting rod is processed according to high-grade surface processing precision, so that the sealing grade between the sealing peripheral surface and the direct-acting sealing structure is relatively high, the sealing requirement when a relatively large pressure difference exists inside and outside the inflation cavity is met, and the inflation cavity can be filled with compressed gas with relatively high pressure; therefore, the aging and insulation testing device for the vacuum arc-extinguishing chamber has a relatively high insulation grade, thereby being suitable for aging or insulation testing of the vacuum arc-extinguishing chamber with a high voltage grade.

The invention discloses a charging port cover and a port cover assembly. The charging port cover comprises an actuator assembly, a positioning assembly, a gooseneck, a port cap and a port pipe, wherein the port pipe is installed in the automobile body metal plate in an embedded mode. The port cap is mounted on the gooseneck in a clamping manner; through holes are formed in the upper surface of the port pipe; the other end of the gooseneck penetrates through the through hole to be installed in the port pipe; an actuator assembly is installed at the joint of the gooseneck and the port pipe; the positioning assembly is arranged on one side of the port cap; a limiting assembly used for fixing the positioning assembly is installed on the surface of the port pipe in an embedded mode; and a shielding rib is mounted on the back of the gooseneck. According to the invention, the covering cap is driven to operate through the actuator assembly, intelligent application of a product is improved, and use of a customer is facilitated; by adding a decorative structure on the back of the gooseneck, after the port cap is opened, the port cap covers the through hole and is integrated with the gooseneck, a mold does not need to be developed independently, and the product development and production cost is reduced; a positioning structure is additionally arranged between the port cap and the port pipe, so that the surface difference and the gap value between the port cap and the automobile body metal plate are ensured.

The invention discloses a small square soft sheet membrane module, belonging to the technical field of water treatment filtering mediums. The small square soft sheet membrane module comprises a percolating water guide pipe provided with water permeable holes, soft sheet membranes and locking plates which are arranged on the percolating water guide pipe in a staggered way, and end plates respectively arranged at the two ends of the percolating water guide pipe, wherein through holes, through which the percolating water guide pipe can pass, are respectively formed in the middle parts of the locking plates; the inner wall of each locking plate is provided with a convex part, and the convex parts enable a percolating water flow channel to be formed between the percolating water guide pipe and the inner walls of the locking plates. The small square soft sheet membrane module is provided with the stable percolating water converging flow channel, thus being basically constant in outlet water resistance and stable in permeant flux; furthermore, sealing rings arranged in the locking plates do not fall off, so that a membrane filtration component structure which is stable in all the directions and firm in sealing can be formed.