86 results about "Rupture disc" 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.

A downhole tool is provided, which comprises burst or rupture disc sub for use in wellbore tubing strings is provided. The burst disc sub includes a frangible disc that, in the initial or closed state of the sub, prevents the flow fluids. The sub includes one or more breaking pins that are adapted to apply a radially inward force against the disc one the sub is pressurized, with such force being capable of shattering the disc and thereby place the sub in its open state.

The present invention is characterized in that: a sealing body (30) comprises a rupture disc (31) that is crimped and fixed to an opening (24) via a gasket (34), and a terminal plate (32) that is disposed on the inner surface side of the rupture disc (31) and is electrically connected to the rupture disc (31) at a radially central part; the rupture disc (31) has a valve part (31A) that deforms if the internal pressure exceeds a prescribed threshold value; and in a region radially outward of the valve part (31A), the rupture disc (31) and the terminal plate (32) are joined via an adhesive layer (33) composed of an insulating adhesive.

A toe valve system positioned along a tubing string. The toe valve system a piston sleeve slidably disposed in an outer housing which has ports therethrough. The toe valve system comprises a shifting sleeve shiftable between positions with respect to the ports. A piston sleeve initially held in a position closing off the at least one port to prevent flow between the interior and exterior of the tubing string. A compensator sleeve mounted within the outer housing, wherein the compensator sleeve is free floating and can accommodate changes in tubing pressure. A piston chamber filled with a liquid which is located between the piston sleeve, the compensator sleeve and the outer housing. The liquid in the piston chamber is retained by a rupture disk that can release the liquid when sufficient pressure is applied within the toe valve system causing the piston sleeve to move and opening the ports.

This utility model relates to a bidirectional rupture disc safety device, comprising a rotating drum. A second bevel gear is fixedly mounted on the upper surface of the rotating drum. One or more holes are formed on the circumferential surface of the rotating drum. One or more first bevel gears mesh with the upper surface of the second bevel gear. A second fixing rod is fixedly mounted near the surface of the rotating drum, with the center of the second fixing rod and the center of the first bevel gear on the same horizontal plane. A connecting rod is sleeved on the outer surface of the second fixing rod. A lower clamping plate is disposed above the rotating drum. The end of the connecting rod away from the first bevel gear is fixedly connected to the lower inner surface of the lower clamping plate. This bidirectional rupture disc safety device uses pressure changes to drive the clamping plate to move up and down, and the meshing of the bevel gears to drive the rotating drum to rotate. This allows the interior of the pressure vessel to contact the exterior when pressure fluctuates, reducing the frequent application of pressure to the rupture disc, preventing its structural integrity from gradually deteriorating, and reducing the risk of accidental activation.

The utility model discloses a kind of rock breaking devices of self-adaptive ultrahigh pressure gas can be repeatedly automatically released and hole sealing, it is related to gas fracturing technical field, the device includes: fracturer, the both ends of fracturer are respectively provided with first end cap and second end cap, the inside of fracturer is provided with reaction cabin;Pressure-increasing mechanism, is inserted in first end cap, for by the combustion of biomass foam, make reaction cabin internal air pressure rise;Piston assembly, between fracturer and second end cap, for with second end cap cooperation, release gas, to realize rock breaking;Hole sealing mechanism, located at the outside of fracturer, for preventing gas to leak out, to maintain fracturing instantaneous hole sealing integrity;Second end cap, for making gas cluster to spray out.The utility model is balanced by using the gas pressure of reaction cabin and top pressure cabin inside fracturer and the special structure of piston, more efficient completion rock fracturing is realized without installing rupture disc in fracturer and frequently disassembling replacement condition.

The utility model discloses a gas treatment device after gas pressure protection and safety pressure relief of an excimer laser, which comprises a rupture disk device (1) with one end capable of being communicated with a resonant cavity of the excimer laser. The other end of the rupture disk device (1) is provided with a one-way safety valve (2) which can be jacked open by working gas leaked from the resonant cavity when a diaphragm (14) of the rupture disk device (1) is ruptured, and the one-way safety valve (2) is connected with an absorption device (3) which can purify the leaked working gas; and the absorption device (3) is provided with an exhaust port (4) capable of exhausting purified gas. According to the utility model, the structure is simple, external air can be prevented from flowing backwards into the excimer laser, the internal gas is kept pure, the discharged gas is absorbed and purified, so that the discharged gas can reach the emission standard, and the harm to workers and the environment is eliminated.

This invention relates to the field of acephate synthesis and processing technology, specifically to an acephate synthesis and processing equipment and process, including a reaction vessel body. A servo motor is fixedly installed on the top of the reaction vessel body. A feed pipe and a pressure relief valve are provided on the reaction vessel body. A heat-conducting coil is fitted on the outer surface of the reaction vessel body. A manhole and a flange pipe are provided on the reaction vessel body. Before the rupture disc explodes, it will be pressured upwards. Under the action of the stud, it will drive the first driving component to rise, causing the first driving component to drive one end of the pressure rod, causing one end of the pressure rod to tilt upwards. The other end drives the fastening component to move downwards, thereby fastening the fastening component and improving the sealing performance when the pressure inside the reaction vessel body is at its maximum. At the same time, the second driving component will also move upwards, driving the driven component, causing the power rod to drive the locking head to move in the locking direction, thereby causing the locking head and the locking buckle to engage together, achieving an explosion-proof effect.

The utility model discloses a reaction kettle pressure bursting disc quick replacement subassembly relates to the technical field of bursting disc, this reaction kettle pressure bursting disc quick replacement subassembly includes the explosion -proof cylinder, the outer wall of the middle part of explosion -proof cylinder is installed with third fixed ring, the inside of third fixed ring is provided with second recess, the inside of second recess is installed with first clamping pipe, the top of first clamping pipe is installed with first fixed ring, the inside of first fixed ring is provided with first recess, the inside of first recess is installed with bursting disc, the upper portion of first clamping pipe is installed with second clamping pipe, the bottom of second clamping pipe is installed with second fixed ring, the bottom of second fixed ring is installed with annular pressure block, and the scheme has solved the problem that the flange and sleeve are welded fixed in the installation process in the process of using the existing reaction kettle bursting device, resulting in the need to replace the overall structure for replacing the bursting disc subsequently, and the use cost is increased significantly.

The invention relates to the technical field of explosion tests, in particular to an internal impact load simulation system. The system comprises a fixed plate, the surface of the fixed plate is integrated with a plurality of simulation explosion impact load subsystems arranged in an M-row N-column matrix, each simulation explosion impact load subsystem comprises a first chamber, a second chamber and a rupture disk, the rupture disk is located between the first chamber and the second chamber, M and N are positive integers, and the second chamber is a variable cross-section chamber. The method can buffer the impact of the high-pressure medium and guide the air flow to be uniformly diffused.

The invention relates to a water seal device for blast furnace gas diffusion, which belongs to the technical field of blast furnace gas diffusion protection and comprises a water seal tank, a gas inlet pipe, a gas outlet pipe, a rupture disk, a pressure detection component, an overflow component, a water replenishing component, a drainage component, a water level height detection component and a nitrogen purging component. The gas inlet pipe and the gas outlet pipe are communicated with the interior of the water-sealed tank, the rupture disk is arranged on the side of the water-sealed tank and used for relieving pressure, the overflow assembly is used for discharging redundant water in the water-sealed tank, the water supplementing assembly is used for adding water into the water-sealed tank, the pressure detection assembly is used for monitoring the pressure value in the water-sealed tank, and the drainage assembly is used for draining the water in the water-sealed tank. The water level height detection assembly is used for monitoring the height of the water level, and the nitrogen purging assembly is used for discharging blast furnace gas in the water-sealed tank. The water seal device provided by the invention not only can be used as a standby diffusing means to effectively prevent the pipe network from being damaged by overpressure, but also can be synchronously adjusted according to the pressure setting change of the electric diffusing device.

The invention discloses a liquid carbon dioxide phase change fracturing system based on a self-regulation temperature control module, and belongs to the technical field of carbon dioxide phase change fracturing. The system comprises a liquid storage cavity, the self-regulation temperature control module, a two-stage safety pressure relief assembly and a release pipe; the self-regulation temperature control module comprises a flexible heating sheet, a temperature and pressure sensor and a temperature control sensor; an MCU is arranged in the temperature control sensor, and the MCU realizes three-stage temperature and pressure closed-loop regulation and control through a PID algorithm; the two-stage safety pressure relief assembly is composed of a constant-pressure rupture disc and an electromagnetic pressure relief valve and is in linkage with a multi-parameter monitoring signal to achieve abnormal pressure relief. According to the liquid carbon dioxide phase change fracturing system based on the self-regulation temperature control module, the problems that in the prior art, heating precision is low, safety protection is insufficient, and reusability is poor are solved, and the liquid carbon dioxide phase change fracturing system has the advantages of being accurate in temperature control, safe, reliable and low in cost and is suitable for fracturing operation of multiple scenes such as coal mines, metal mines and urban tunnels.

The present application belongs to the technical field of oil and gas downhole operation equipment, and discloses a differential pressure remote control downhole plugging valve capable of being tied back, which comprises an outer cylinder, a shear spindle, an upper rupture disc and a lower rupture disc, the top end of the outer cylinder is detachably connected with a hand-off assembly or a tie-back assembly, and the bottom end of the outer cylinder is provided with a ball valve assembly; the outer cylindrical surface of the shear spindle is provided with a first boss and a second boss at intervals, and the area of the upper acting surface of the first boss is greater than the area of the lower acting surface of the second boss; after the lower rupture disc is broken, the annular space pressure drives the shear spindle to move upward, and the ball valve assembly is closed; after the upper rupture disc is broken, the annular space pressure forms a pressure difference between the upper acting surface of the first boss and the lower acting surface of the second boss, the shear spindle moves downward under the action of the pressure difference, and the ball valve assembly is opened. The present application can form a pressure difference on the shear spindle through the annular space pressure to remotely control the shear spindle to move so as to open or close the ball valve assembly, which is beneficial to rapid layer conversion operation.

The utility model provides a device of protecting rupture disc of combustion system, including flange subassembly, heat preservation subassembly and rupture disc, flange subassembly includes detachable connection's mounting and upper flange, and mounting includes installation pipe and lower flane, and lower flane fixedly arranged on installation pipe upper end pipe orifice, and lower flane is the round sheet with through -hole being arranged in the middle, and the through -hole aperture is same with installation pipe inner diameter, upper flange is detachable with lower flane and is connected together, and rupture disc is clamped between upper flange and lower flane, heat preservation subassembly includes heat preservation basket and heat preservation cotton, and heat preservation cotton is arranged in heat preservation basket inside, heat preservation basket is detachable and is assembled in installation pipe, and heat preservation basket upper end is arranged in installation pipe, and heat preservation basket lower end stretches out from installation pipe lower end pipe orifice.

The application provides a self-unblocking drillable floating collar, relates to the technical field of drilling, and is used for full-bore floating casing operation. The floating collar is installed at the bottom of a casing string, realizes the sealing of the bottom of an air section of the floating casing, and prevents the fluid in a well from entering the casing. After the casing is lowered into a designated position in the well, the well mouth is pressed to break the rupture disc, the broken pieces of the rupture disc enter the outer cylinder along with the drilling fluid, the small broken disc pieces normally pass through the filter screen, the large broken disc pieces are concentrated on the bearing screw, the drilling fluid and the small broken disc pieces impact the valve core head, the elastic assembly is in a compressed state, a gap is formed between the valve core head and the valve seat to form a flow channel, the drilling fluid and the small broken disc pieces flow along the flow channel, and when the pump is stopped, the large broken disc pieces slide onto the inner wall of the outer cylinder under the action of gravity, and the floating collar is self-unblocked.

The invention discloses a rupture test method, system and device for a rupture disk in a hydrogen environment, and relates to the technical field of material physical property test.The method comprises the steps that sweeping and blowing gas is introduced into a controlled test pipeline, and when monitoring data is lower than a threshold value, hydrogen is introduced into the controlled test pipeline; controlling the temperature of the test cavity to reach a preset temperature value and pressurizing the hydrogen to a preset target pressure value; the hydrogen pressure is obtained in real time; the pressure rise rate is controlled through a preset compound control algorithm; hydrogen concentration data are obtained in real time, and pressure change characteristics are analyzed; and when the hydrogen concentration data exceeds a threshold value or the pressure change characteristic conforms to the blasting judgment characteristic, a safety interlocking instruction is executed. According to the invention, through graded pressurization and pressurization rate closed-loop control, the problems that the blasting performance test cannot be carried out in a hydrogen environment and the hydrogen blasting performance of the rupture disk cannot be accurately tested and evaluated in the prior art are solved, and the blasting performance test and evaluation of the hydrogen blasting disk in a simulated real environment are realized.

The present application relates to oil and gas field downhole fracturing tool technical field, specifically to a kind of pressure difference sliding sleeve and method for use, pressure difference sliding sleeve includes the upper joint, cylinder sleeve, lower joint connected in sequence, center tube is arranged in the cylinder sleeve, the center tube and cylinder sleeve form sealed hydraulic drive cavity, piston is arranged in the sealed hydraulic drive cavity and slides axially, the cavity wall of sealed and sealed hydraulic drive cavity sealing cooperation, shear pin is fixedly arranged on the center tube and / or cylinder sleeve, the piston is axially fixed by shear pin, the first flow-through hole and the second flow-through hole are respectively opened in the cylinder sleeve and center tube at piston, the piston is closed between the first flow-through hole and the second flow-through hole, threaded through-hole is opened on the center tube, the threaded through-hole is communicated with sealed hydraulic drive cavity, rupture disc is fixedly arranged in the threaded through-hole.The present application can realize sliding sleeve full-automatic opening by only pressing in wellhead pipe, without auxiliary operation such as ball.

A test assembly 100 for a rupture disc comprises a disc holder 112, a clamp member 114, opposite the rupture disc from the disc holder, constrains the rupture disc in an axial direction. A heater asse

The application discloses a kind of hydrogen environment under rupture disc burst test method, system and device, it is related to material physical property testing technical field, the method includes: to the controlled test pipeline is admitted to sweep and blow gas, when monitoring data is lower than threshold value, to the controlled test pipeline is admitted to hydrogen;Control the temperature of test cavity reaches preset temperature value and pressurize hydrogen to preset target pressure value;Real-time acquisition hydrogen pressure;Pressure rising rate is controlled by preset composite control algorithm;Real-time acquisition hydrogen concentration data, analyze pressure variation characteristics;When hydrogen concentration data exceeds threshold value, or when pressure variation characteristics meet burst judgment characteristics, execute safety interlock instruction.The application solves the problem that the prior art cannot carry out burst performance test under hydrogen environment by staged pressurization and pressure rising rate closed-loop control, and simultaneously cannot accurately test and evaluate the hydrogen blast performance of rupture disc, realizes the burst performance test and evaluation of hydrogen rupture disc in simulated real environment.

The invention discloses a temporary plugging method for a refracturing special-shaped hole and a related device. The method comprises the steps that in a candidate well, the shape and size of a special-shaped hole corresponding to primary fracturing perforation are obtained; a special-shaped hole and a circular hole are machined in a sleeve of the migration simulation device; a rupture disk with preset rupture pressure is mounted at the position of the circular hole; a special-shaped hole temporary plugging experiment is carried out, and the specification and size range of a temporary plugging component used for temporary plugging construction is determined; the number of temporary plugging components used for temporary plugging construction is determined; and the pre-determined temporary plugging component is conveyed into the range of the shaft through fracturing fluid, and temporary plugging construction of the special-shaped hole is conducted. According to the method, the plugging accuracy and success rate of the special-shaped hole can be increased, plugging of an old crack formed by primary fracturing perforation can be completed, the crack initiation efficiency of a new crack formed by repeated fracturing perforation can be improved, and benefit potential tapping of remaining oil in a candidate well is achieved.

The invention relates to the field of oil and gas exploration and development and downhole tools, in particular to a casing floater with an automatic compensation and hydraulic striker device, which comprises a body and a hydraulic striker mechanism, the hydraulic striker mechanism comprises a rupture disc arranged in the body and a support sleeve arranged below the rupture disc in the axial direction, and the support sleeve is connected with the body. A striker ring used for rupture of the rupture disc is arranged on the inner side of the supporting sleeve, and the striker ring and the supporting sleeve are axially connected in a nested mode through a shear pin, so that the initial position of the top of the supporting sleeve is higher than the top of the striker ring, and the supporting sleeve moves in the axial direction under the action of preset pressure. According to the invention, the effects of high loading capacity, strong adaptive capacity, more stable opening, full bore realization, well cementation quality guarantee and the like are realized.

This utility model discloses a fragment-free, low-flow-resistance high-pressure anti-arch cross-groove rupture disc clamping structure, relating to the field of rupture disc technology. It includes an upper clamp, an anti-arch cross-groove rupture disc assembly, and a lower clamp. The upper clamp's inner cavity adopts a tapered structure with a larger lower section and a smaller upper section. After the rupture disc actuates, its fractured portion first impacts the tapered inclined surface and is forced inward, preventing root tearing and fragment ejection. The rupture disc's arched surface convexes downward, and the upper and lower clamp's convex rings form a circumferential flow channel. After the rupture disc rolls up, it adheres to the tapered inclined surface without blocking the channel. The main components are machined from conventional stainless steel forgings, eliminating the need for expensive materials or complex processes, resulting in good economic efficiency. This utility model surpasses existing technologies in multiple dimensions, including high pressure, fragment-free operation, low flow resistance, and ease of maintenance. It can be widely applied in critical applications such as hydrogenation reactors, high-pressure storage tanks, and supercritical fluid pipelines, offering significant economic and social benefits.

Embodiments described herein provide for thermal runaway gas venting. A device includes a one-way pressure-rated burst disk component. The one-way pressure-rated burst disk component includes a retaining ring having an internal structure, a seal, and a disk disposed between the retaining ring and the seal such that the internal structure of the retaining ring is adjacent a first surface of the disk. The retaining ring secures the disk against a panel. The internal structure of the retaining ring opposes a force applied at a second surface of the disk from an opposite side of the panel. A battery pack includes a plurality of battery modules and a venting structure between a first row of battery modules and a second row of battery modules. Each battery module includes a plurality of battery cells and a one-way pressure-rated burst disk device.

The adjustable chemical injection valve comprises a lower valve body assembly, a middle valve body assembly, an upper valve body assembly, an adjusting connector and a conversion connector which are sequentially arranged along the same axis, the pre-tightening force of a third elastic element can be flexibly adjusted by controlling the thread meshing length L, and therefore the opening pressure of the chemical injection valve can be adjusted. Therefore, the opening pressure value can be flexibly set according to specific well conditions; secondly, the sealing reliability is improved by arranging a three-stage redundant sealing structure; the dependence on a control pipeline is avoided, the medicament is conveyed to a required underground position by adopting the annulus injection channel matched with the complex well condition, the flowing path of the medicament in the annulus is smoother and is hardly influenced by the well condition, the medicament conveying efficiency can be greatly improved, and the medicament conveying cost is reduced. The injection valve has the advantages of adaptive opening pressure adjustment, repeated use, good sealing effect, no dependence on a disposable rupture disk and the like.

A rupture disc (100), an explosion-proof valve (200), a battery cell (300), a battery pack (400), and an electrical energy device (500). The rupture disc (100) is provided with a first score (11) and a second score (12), and the second score (12) is surrounded by the first score (11). The first score (11) is configured to be in an annular shape having an opening (111), and the area of a region defined by intersecting extension lines of the two ends of the outer periphery of the first score (11) is S1. The second score (12) comprises a stress concentration section (121) and a reinforcement section (122); the stress concentration section (121) is spaced apart from the opening (111) in a first direction; one end of the reinforcement section (122) is connected to the stress concentration section (121), and the other end of the reinforcement section (122) is located between one end of the reinforcement section (122) and the opening (111) in the first direction; a straight line passing through one end of the stress concentration section (121) and the other end of the reinforcement section (122) is set as a first boundary line (1211), and a straight line passing through the other end of the stress concentration section (121) and the other end of the reinforcement section (122) is set as a second boundary line (1212); and the area of a region defined by the outer side edge of the stress concentration section (121), the first boundary line (1211), and the second boundary line (1212) is S2. S1 and S2 satisfy the relational expression: 5% S1 ≤ S2 ≤ 45% S1.

The invention belongs to the technical field of fuel gas blow-off, and particularly relates to a rupture disk recovery device and an emergency fuel gas blow-off system. In order to prevent fragments generated after rupture of a rupture disk from affecting the flowing characteristics of fluid, the rupture disk recycling device comprises a shell used for covering the rupture disk and a capturing structure arranged in the shell, the shell comprises a baffle used for directly facing the rupture disk and an enclosure frame used for connecting the baffle and a pipeline, and the capturing structure is arranged in the shell. The enclosure frame is provided with outflow holes communicating the inside and the outside of the enclosure frame, a dead cavity is formed in the sides, close to the baffle, of all the outflow holes, and the capturing structure is arranged in the dead cavity. The invention further discloses an emergency fuel gas blow-off system adopting the corresponding rupture disk recovery device. By utilizing the characteristics of the dead cavity, when the rupture disk is just ruptured, the pressure in the dead cavity is lower, so that high-pressure fluid can carry fragments to enter the dead cavity; and after the fragments are captured by the capturing structure, the fluid is difficult to flow through the fragments, so that the influence of the fragments on the flow characteristics of the fluid can be reduced to the greatest extent.

A dry powder fire extinguishing system includes a container and extinguishing powder disposed within the container. A rupture disc assembly is coupled to the container and configured to allow powder to flow through the rupture disc assembly when a specified pressure is applied. A gas generator is coupled to the container and configured to generate gas upon triggering. The gas generator has multiple gas discharge orifices, each configured to allow gas generated by the gas generator to flow into the container to pressurize the container and activate the rupture disc, allowing the extinguishing powder to be discharged from the container. A gas generation system for a dry powder fire extinguishing system is also provided.

A venting device disclosed herein comprises: a main body comprising a rupture disc which is ruptured by an increase in external pressure, or a valve which is opened / closed in response to the increase in external pressure; and a cover surrounding the main body, wherein the cover comprises an outer cover which surrounds the upper half of the main body and an inner cover which surrounds the lower half of the main body and is spaced apart from the outer cover so as to form an inlet therebetween. In addition, the inner cover has a smaller protrusion height relative to the main body than the outer cover.

This utility model discloses an energy storage battery box, including a battery module, a rupture disc assembly, and a cylindrical box body. The box body has a battery cavity for accommodating the battery module, and the battery cavity has an upper cavity wall. The rupture disc assembly is disposed on the upper cavity wall of the battery cavity to automatically rupture when the pressure inside the battery cavity reaches a preset pressure value. The energy storage battery box of this utility model embodiment can reduce the risk of rupture in extreme situations such as thermal runaway of the battery cells, and improve the safety of the battery box and the surrounding environment.