17 results about "Temporary seal" patented technology

Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may include a rupture disc having a side surface that has a shallow angle taper inward towards a bottom surface of the rupture disc, and a mounting apparatus to support the rupture disc so that the rupture disc forms the temporary seal. When a disc working pressure is applied to a top surface of the rupture disc, engagement / force transmission between the rupture disc and the mounting apparatus produces enough radial compression in the rupture disc due to the shallow angle taper to significantly mitigate or cancel tensile stresses thereby avoiding the rupture disc from breaking. The rupture disc may be configured to break when the rupture disc is subjected to a disc working pressure that is greater than the disc rupture pressure, thereby removing the temporary seal. An axial abutment surface feature may be provided which is configured and operable to limit downward axial movement of the rupture disc relative to said disc support mechanism and thus be operable to restrict the amount of compression said tapered wall surface of said disc support mechanism can exert on said at least a portion of said rupture disc when the top surface of the rupture disc is subjected to said hydraulic pressure within the well.

The invention relates to the technical field of tank car cleaning, and discloses an automatic steam cleaning system of a chemical tank car and a dosing control method thereof.The automatic steam cleaning system comprises a translation assembly arranged at the top of a supporting frame body, a lifting assembly is arranged at the bottom of the translation assembly, and a temporary sealing cover plate is arranged at the bottom of the lifting assembly; a detection assembly is arranged on the temporary sealing cover plate along the circumference, a spray head body used for cleaning the inner wall of the oil tank body is arranged on the central axis of the temporary sealing cover plate, and an adjusting assembly is arranged on the outer side of the spray head body; according to the device, by arranging the detection assembly, when the remote control center drives the temporary sealing cover plate to descend through the lifting assembly, the detection assembly can serve as a signal for judging whether the temporary sealing cover plate is aligned with the inlet of the oil tank body or not, and manual alignment is avoided; meanwhile, the signal can be used as a signal for the lifting assembly to drive the temporary sealing cover plate to descend in place, and the remote control center judges the current size of the oil tank body according to the descending distance when the lifting assembly descends in place.

The application discloses a kind of underground main structure modular temporary plugging wall and its construction method, and plugging wall includes: the connecting reinforcement for being arranged at the port of underground main structure, for assisting to strengthen positioning plugging wall overall structure;Prefabricated concrete module, including square module main body, module interconnection mechanism, pre-embedded handle, reinforcing rib plate, water stop unit;The module interconnection mechanism includes the groove being opened in the periphery of the module main body, the connecting reinforcement being fixedly connected with module main body and the end being elongated into the groove, the interconnection component for the interconnection of connecting reinforcement between modules;By using modular prefabricated concrete structure assembly to form temporary plugging wall, effectively solve the technical problem that traditional retaining wall needs to use large mechanical equipment to break, cause pre-embedded component and waterproof layer to cause damage, enhance the safety of construction, ensure the structure connection quality, simultaneously detachable module group can realize reuse, with green environmental protection effect.

First and second panel webs are superposed on each other and fed in their longitudinal direction. After a side gusset is temporarily fixed to the second panel web, the side gusset is divided by a dividing device to form a pair of open edges. The open edges are aligned with a line of weakness of the first panel web when the first and second panel webs are superposed on each other. The side gusset is temporarily sealed to the first and second panel webs by a temporary seal device to form temporary sealed sections. The first panel web is guided to be divided along its line of weakness and to be folded on the sides of its division edges. This guiding of the panel web and the temporary sealed sections cause the side gusset to be opened at the open edges to form open surfaces. An end face web is then disposed on the panel web to be superposed on folded parts of the panel web and the open surfaces of the side gusset.

This invention discloses a method for forming an internal curved flow channel in a PDC (Polymer Diode Cartridge) drill bit. First, a specially shaped bend is designed and fabricated, with dimensions identical to the curved flow channel. Second, the specially shaped bend is assembled into the drill bit mold and temporarily sealed. Then, material is loaded into the drill bit mold and sintered. Finally, the mold is opened to remove the temporary seal, forming the curved flow channel. The specially shaped bend is formed using 3D printing or hot bending. The 3D printing material is nickel-based tungsten carbide, nickel-based high-temperature alloy, or steel, while the hot bending material is low-carbon steel or low-carbon alloy seamless steel pipe. Before assembly with the drill bit mold, the bend is filled with resin sand and cured at 200-300℃. The process of loading, sintering, and mold cleaning produces a precision-controlled internal curved flow channel. This invention provides a new solution for installing high-pressure or ultra-high-pressure nozzles on the cutter wings of a PDC drill bit, significantly improving downhole rock-breaking efficiency.

The present application relates to a kind of water plugging methods of screen gravel filling self-flowing oil well, including accurate identification water layer section by comprehensive well logging, production logging and numerical simulation data;Determine packer setting position based on well condition and indoor experiment;Design coiled tubing and tubing annulus injection temporary plugging agent temporary sealing upper oil production layer and gravel packing annulus, while injecting temporary plugging agent, coiled tubing injects certain viscosity preflush, prevent temporary plugging agent from entering bottom water production layer, prevent subsequent main blocking agent damage;Determine preflush viscosity according to reservoir permeability simulation sand filling pipe test.Determine main blocking agent injection time according to temporary plugging agent gel time, ensure that main blocking agent enters water production layer after gelation.Main blocking agent needs to have lower viscosity, to ensure that it enters water production layer first, and forms high-strength plugging barrier;Finally, release packer and induce flow.This application has achieved the beneficial effects: realize the deep precise plugging of water production layer, maximize the protection of oil production layer, effectively extend the self-flowing period of oil well and improve the recovery of crude oil.

The invention relates to the technical field of plate drilling, and discloses an office table machining plate drilling device which comprises a machining table and further comprises a support fixedly connected to the bottom of the machining table and used for supporting the machining table; the blockboard is placed above the processing table; and the adjusting mechanism is arranged on the machining table and used for moving the punching mechanism installed on the adjusting mechanism to punch the blockboard. When the woodworking board is punched and a drill bit is in contact with the board, a temporary sealed cavity tightly attached to the surface of the board is formed to completely surround a dust production point, and air is directly pumped from the sealed cavity through external negative pressure equipment, so that wood chips and dust generated during drilling are captured at a production source, and the dust is prevented from being damaged. The problem of dust diffusion in traditional processing is solved, the health of operators is effectively protected, the dust explosion risk is avoided, meanwhile, the cleanness of equipment and workshop environment is kept, and the high-standard requirements of modern green production and occupational health and safety are met.

A battery cell manufacturing apparatus according to an embodiment of the present invention may comprise: a vacuum chamber in which a battery cell semi-finished product that includes an accommodation part accommodating an electrolyte and an electrode assembly and a gas pocket part connected to the accommodation part and positioned above the accommodation part is disposed; a piercing unit for perforating a degassing hole in the gas pocket part; a sealing tool for forming a temporary sealing part that crosses between the degassing hole and the accommodation part, and forming a sealing area that includes the temporary sealing part while rising in contact with the gas pocket part; a cutting unit for forming an opening by cutting a portion of the upper end of the gas pocket part after the temporary sealing part is formed; and an injection unit for injecting gas into the opening.

A water filter includes an elongated housing including a first distal portion forming a mouth, a second distal portion forming holes, and a sidewall forming a nozzle that is fluidly coupled to an inner chamber of the elongated housing via a passage. The inner chamber fluidly couples the mouth with: the nozzle in a first configuration; and an external environment via the holes in a second configuration. The water filter includes a substantially spherical structure disposed in the inner chamber. The substantially spherical structure is configured to be forced: toward the mouth in the first configuration; and toward a portion of the inner chamber that is opposite the mouth in the second configuration to create a temporary seal. The elongated housing forms a protrusion that extends into the inner chamber and is configured to prevent the substantially spherical structure from exiting through the mouth.

This method for producing a power storage device includes temporary sealing steps (S21, S24), removal steps (S23, S26), and a main sealing step (S27). In the temporary sealing steps (S21, S24), a heat plate is pressed against a protruding frame part (53) via a sealing material (54), and the sealing material (54) is joined to the protruding frame part (53) in a state in which the protruding frame part (53) and the sealing material (54) are incompatible. In the removal steps (S23, S26), the sealing material (54) joined to the protruding frame part (53) in a non-compatible state is removed. In the main sealing step (S27), the heat plate is pressed against the protruding frame part (53) via the sealing material (54) after removal of the sealing material (54), and the sealing material (54) is joined to the protruding frame part (53) while the protruding frame part (53) and the sealing material (54) are in a compatible state.

The invention is a bag production system, characterized in that it comprises a main feeding unit (10) with the aforementioned base material (A), strip material (B) and adhesive strip (D) that are advanced simultaneously, a glue unit (13) that creates an adhesive layer on the adhesive strip (D), an ultrasonic welding (15) unit that fixes the strip material (B) and adhesive strip (D) on the base material (A), a folding unit (50) for folding the base material (A), a perforating cutting blade (14) that creates a tear line near the mouth edge (A1) of the bag (AB) after folding, and a temporary sealing unit (25) to restrict the movement of the handles during production.

The utility model relates to the technical field of conveying machinery, in particular to a glue supply device capable of controlling glue dipping amount. According to the scheme, the glue dipping device comprises the elastic body arranged at the outlet end of the glue supply assembly, and the elastic body is immersed in the glue, used for blocking the pipe opening of the pipe body to be dipped with the glue during operation and capable of being compressed into the glue layer under the action of pressure so that the periphery of the pipe body to be dipped with the glue can be immersed into the glue layer. And when the pipe body to be dipped with the glue is pressed to the elastic body immersed in the glue, the elastic body deforms and is tightly attached to the pipe opening of the pipe body to be dipped with the glue. A temporary seal is formed, and glue is effectively prevented from entering the pipe body. And excessive glue is prevented from entering the pipe body to be dipped with glue, and cleanness of the interior of the pipe body is guaranteed. And the glue is controlled to be only attached to the outer part of the pipe body, so that the glue dipping consistency and accuracy are ensured, and the stability of the product quality is favorably ensured. In addition, glue is prevented from entering the pipe body to be wasted, and the production cost is also reduced.

The invention discloses an on-line maintenance structure and method for a non-stop type separator transmission device, and relates to the technical field of material grinding and powder.The structure comprises a mill separator body, an internal rotor and a modular maintenance structure arranged at a top cover through hole; through the unique annular sealing air cavity design, the structure is matched with a sealing air supply system to inject gas to form positive pressure, and leakage of media in equipment is effectively blocked. During maintenance, under the condition that the mill is kept in a normal operation state, driving and transmission parts can be sequentially disassembled, and the transmission shaft is lowered, so that the annular convex edge on the transmission shaft is matched with the sealing ring in the sealing sleeve to form temporary sealing, and fault parts such as a bearing and the like can be safely and quickly replaced. According to the invention, on-line maintenance under the working conditions of load, pressure and temperature is realized, production interruption caused by shutdown in a traditional mode is thoroughly avoided, the maintenance time is shortened from tens of hours to within 2 hours, and the operation efficiency and economic benefit of equipment are remarkably improved.

This invention discloses a method and equipment for sealing leaking rainwater and sewage well chambers. The method includes: excavating earth to the point of leakage, cleaning the well chamber and compacting the excavation surface; constructing a brick masonry layer on the excavation surface and sealing the gaps between the brick structure and the well chamber; wrapping wire mesh tightly around the leak point, ensuring it fits snugly against the well chamber; installing PVC pipes and wrapping them around the leaking well chamber; installing steel molds around the well chamber and connecting the upper ends of the PVC pipes to a displacement box; installing a vacuum pump to ensure the discharge of rainwater and sewage; adjusting the vacuum pump and pouring concrete into the steel molds; temporarily shutting down the vacuum pump, removing the temporary seal, connecting the concrete pump box, and using the displacement box and vacuum pump to seal the PVC pipes with concrete slurry; after sealing, removing the excess PVC pipes and steel molds at both ends; and waterproofing the top of the poured concrete. This invention reduces construction costs and time, effectively controls the spread of rainwater and sewage during construction, and improves the working environment for workers to some extent.

Disclosed is a rupture disc assembly for use in making a temporary seal in a vessel such as a casing string. The rupture disc assembly may generally include (A) a rupture disc having a side surface having a shallow taper inward towards a bottom surface of the rupture disc (B) an actuating mechanism including (i) an outer sled having an inner supporting surface forming a taper complimentary to the shallow taper of the side surface, (ii) an inner sled disposed within the outer sled and having a support shoulder to support the bottom surface of the rupture disc and (iii) a securing mechanism and (C) a housing to house the rupture disc and actuating mechanism.

The invention relates to a method for manufacturing battery cells (30) that are provided with a filling opening (38) on an accessible side. The following process steps are carried out: First, the battery cells (30) are filled (10) with an electrolyte and the filling openings (38) are temporarily closed. Then, the battery cells (30) are introduced into a processing station (40) comprising a drying chamber (24), the filling openings (38) of the battery cells (30) are opened, and degassing devices (52) are connected to the battery cells (30). Subsequently, the battery cells (30) are removed from the processing station (40), and a forming process (34) is carried out on the battery cells (30), with simultaneous removal of gases generated during the forming process (34) outside the processing station (40).The formed battery cells (30) are then introduced into the processing station (40), the degassing device (52) is removed from the battery cells (30), and the filling openings (38) of the battery cells (30) are temporarily sealed. Electrolyte is then added to the formed battery cell (30) after the temporary seal is removed. Finally, the filling openings (38) of the battery cells (30) are sealed with a material-locking seal, which is carried out outside the processing station (40).

This invention relates to a method and apparatus for sealing a pre-reserved pressure relief well in a caisson. The method includes installing an installation component on a branch pipe on one side of the pressure relief well; extending a first grouting pipe to the bottom of the pressure relief well and a second grouting pipe to the upper end of the well; temporarily sealing the pipe opening at the upper end of the well; performing a first grouting through the first grouting pipe; stopping grouting the first grouting pipe and allowing it to stand after the grout injected into the first grouting pipe has initially solidified; performing a second grouting through the second grouting pipe, with the grouting pressure of the second grouting pipe being greater than that of the first grouting pipe; opening the temporary seal; and slowly pulling the second grouting pipe outwards while grouting in the later stages of the second grouting; and finally removing the installation component. This invention ensures that there is no groundwater in the pressure relief well, achieving a tight seal without precipitation in the surrounding environment. The sealing process significantly reduces grout loss, has low construction costs, and guarantees high construction quality and sealing quality.