169 results about "Rupture disc" patented technology

The invention discloses a turbine type redressing guide shoe assembly which comprises a connector, a turbine section, a rupture disc piece, a supporting section and a redressing guide shoe head, the connector, the turbine section, the rupture disc piece and the supporting section are all in a straight tube shape, the lower end of the connector is used for being connected and communicated with the tail end of a sleeve, the upper end of the turbine section is connected and communicated with the lower end of the connector, and the redressing guide shoe head is connected with the turbine section. The lower end of the turbine section is connected and communicated with the upper end of the supporting section, the redressing guiding shoe head is coaxially installed at the lower end of the supporting section, the rupture disc is located in the connector and installed on the turbine section, and the turbine section drives the redressing guiding shoe head to rotate through the supporting section under the action of drilling fluid so as to correct the well wall. In this way, after the upper end of the connector is in butt joint with the lower end of the sleeve, drilling fluid is introduced through the sleeve at the moment, the turbine section drives the supporting section and the reaming guide shoe head to coaxially rotate under the action of the flowing drilling fluid with pressure, the well wall is corrected through the reaming guide shoe head, and the sleeve is guided to smoothly enter a well.

The invention relates to the technical field of oil and gas field production and exploitation equipment, in particular to a fixed gas lift working barrel for under-pressure operation, which comprises a working barrel body, a casing pressure operating valve, a check valve head and a piston assembly, and the lower part of the working barrel body is provided with an overflowing hole communicated with the gas lifting channel and the overflowing channel. The working barrel is reasonable and compact in structure and convenient to use, by arranging the piston assembly, the pressure of liquid in the annulus between the outer side of the working barrel body and the inner side of a shaft can be changed so that the piston assembly can move downwards, and communication and separation of the overflowing hole and the annulus are achieved through the position change of the piston assembly; therefore, the difficulty of installing a rupture disk and a blanking plug on each stage of working barrel body is reduced when the working barrel body works under pressure, so that the working is simpler and safer, the working efficiency is improved, the production cost is reduced, and the phenomenon of polluting a shaft can be avoided.

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 WELL MENDER A well mender, for performing RIH and POOH, comprising: a diverter cup equipped with a rubber element configured to direct fluid flow and serve as a seal interface between a casing and said tool body; a filter sleeve with predetermined hole sizes for filtering out debris of specified sizes; a valve housing providing a controlled pathway for drilling fluid and debris; a valve configured for targeted flow control and debris management; a shut off ball configured to block fluid flow at desired stages of operation; a lower filter sleeve positioned below said filter sleeve for additional debris capture; one or more lower diverter channels to facilitate controlled flow and direction of fluids and debris; an internal lock key for securing and stabilizing said well mender within a well bore; and a rupture disk configured to rupture upon a predetermined differential pressure, providing an emergency pressure release mechanism.

The application provides a delay opening toe sleeve, comprising: a hollow pipe, a lower end of which is configured as a lower joint and is provided with a first communication hole; a sealing sleeve and a communication sleeve sleeved on the hollow pipe, a first annular space and a second annular space being respectively formed between the sealing sleeve, the communication sleeve and the hollow pipe, the communication sleeve being provided with a second communication hole aligned with the first communication hole; a pressure transmission sleeve arranged between the sealing sleeve and the communication sleeve, the pressure transmission sleeve being provided with a pressure transmission hole; a delay medium and a sleeve arranged in the second annular space; a rupture disc assembly arranged in a side wall of the lower joint, a radial outer side of the rupture disc assembly being provided with a gap in communication with the second annular space; wherein the sleeve blocks the first communication hole and the second communication hole in an initial state, and the pressure transmission hole is closed, the delay opening toe sleeve is configured to make the rupture disc assembly break when a wellbore pressure rises to a test pressure value, and to open the delay opening toe sleeve through the sleeve and the delay medium.

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 invention belongs to the technical field of large steam turbine atmospheric valve rupture disks, and discloses an atmospheric valve rupture disk vacuum-resistant bracket structure which comprises a supporting ring and a supporting frame, the supporting ring is arranged on the vacuum side and the supporting frame is arranged on the pressure relief side, and supporting ring sealing planes are arranged on the upper face and the lower face, away from the outer circle edge, of the supporting ring. A supporting ring spherical crown is arranged at the intersection of the interior of the supporting ring and the supporting ring sealing plane, a hollow through hole is formed in the supporting ring spherical crown, supporting frame sealing planes are arranged on the upper face and the lower face, away from the outer circle edge, of the supporting frame, a supporting frame spherical crown is arranged at the intersection of the interior of the supporting frame and the supporting frame sealing plane, and a circular through seam is formed in the inner side of the root of the supporting frame spherical crown. Compared with a traditional vacuum-resistant bracket, the vacuum-resistant bracket has higher back pressure resistance and longer service life, the hidden danger that fragments fall off after blasting is eliminated, and it is ensured that a discharge channel can be completely opened.

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.

The invention discloses a pressure testing plug, a pressure testing pipe string, a pressure testing device and a using method. One end of a pressure testing plug base body is a first connecting part, and the other end of the pressure testing plug base body is a second connecting part; an inner cavity communicated with the two ends is formed in the pressure test plug base body; the outer wall of the pressure test plug base body is sleeved with the pressure test sealing ring; the rupture disk is hermetically connected in the inner cavity, and two ends of the rupture disk are blocked; the bearing cylinder is connected into the inner cavity, one end of the bearing cylinder is provided with an opening opposite to the rupture disc, and the other end is blocked; a circulation hole is formed in the side wall of the bearing cylinder and communicates with the inner cavity. The device can solve the problem that the well control risk cannot be controlled in the pressure test process, the treatment difficulty of the well control risk is reduced, the treatment time is shortened, the well control reliability is improved to the maximum extent, and the production safety of a single well is comprehensively guaranteed.

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.

This invention relates to the field of oil and gas well development technology, and particularly to a high-energy gas fracturing ultra-high pressure simulation testing device and equipment. The high-energy gas fracturing ultra-high pressure simulation testing device includes a main body, a fracturing test module, and a detection and control module. The main body includes a wellbore, a buffer cylinder horizontally placed at the bottom of the wellbore, and a short connecting cylinder welded to the middle of the buffer cylinder, with the wellbore and the short connecting cylinder fixedly connected. A flange blind plate is installed at the top of the wellbore. The fracturing test module includes a rupture disc and a fracturing gun. The rupture disc is disposed between the wellbore and the short connecting cylinder. The fracturing gun is disposed inside the wellbore. The detection and control module includes an igniter, a pressure sensor, and a control center. The igniter is disposed inside the fracturing gun, which is filled with high-energy material. The high-energy gas fracturing ultra-high pressure simulation testing device provided by this invention effectively improves the reliability of test data, reduces the risk of experiments, and lowers the reconstruction cost of equipment.

A method of cementing a tubular string in a wellbore can include applying a predetermined pressure differential from a flow passage extending axially through the tubular string to an annulus surrounding the tubular string, thereby opening a rupture disk of a cementing stage tool connected in the tubular string, and then flowing a fluid through the flow passage and into the annulus via the rupture disk, thereby displacing an opening plug into engagement with an opening sleeve of the cementing stage tool. A cementing stage tool can include a longitudinal flow passage, an outer housing assembly, an opening sleeve that prevents fluid flow between the flow passage and a housing port in a run-in configuration, and a rupture disk that permits fluid flow between the flow passage and the housing port in response to a predetermined pressure differential applied from the flow passage to the housing port.

The application discloses a cementing multipurpose rubber plug and a cementing tool and method. The cementing multipurpose rubber plug comprises a rubber plug body, a rubber plug rubber body, a striking sleeve, a pin, a rupture disc and a gland. The rubber plug rubber body is sleeved outside the rubber plug body. One end of the pin is inserted into the side wall of the striking sleeve, and the other end is inserted into the rubber plug body. The side wall of the striking sleeve is connected with the rubber plug body through the pin. The rubber plug body is in a cylindrical shape, and the inner cavity of the rubber plug body is provided with the striking sleeve and the rupture disc from top to bottom. The gland is threadedly connected with the rubber plug body. The cementing multipurpose rubber plug can be used in multiple stages of cementing, and can be used as a calibration rubber plug. The accuracy of the measurement of the replacement amount of the slurry can be improved, the problems of the casing plug and the replacement can be avoided, a corresponding solution can be provided for the pipe string buckling caused by the release of the rubber plug before the cement injection, and the cementing operation accidents can be avoided.

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 invention discloses a full-bore high-pressure floating coupling, which relates to the technical field of floating couplings, and comprises an outer shell, and a central pipe, a support sleeve and a lower joint which are connected in the outer shell, the center pipe is connected to one side of the outer shell, the lower connector is connected to the other side of the outer shell, and the supporting sleeve is connected between the center pipe and the lower connector. A first cavity is formed between the central pipe and the shell, and the central pipe is connected with an explosion valve; an expansion cavity is formed between the supporting sleeve and the outer shell, and a ball sealer assembly is connected between the expansion cavity and the first cavity. A rupture disk for dividing the inner cavity of the outer shell into two independent cavities is connected in the supporting sleeve; a plurality of firing pins extending in the radial direction are connected to the supporting sleeve and correspond to the position between the expansion cavity and the rupture disk; when the liquid breaks through the rupture disk of the rupture valve to open the rupture valve, the liquid enters the first cavity to impact and open the ball sealer assembly and then flows into the expansion cavity, so that the expansion filler in the expansion cavity expands to push the firing pin to move in the radial direction to impact the rupture disk.

The invention discloses a cable joint explosion-proof protection device, and relates to the technical field of cable joint protection, the cable joint explosion-proof protection device comprises a cable joint body, and the outer surface of the cable joint body is provided with an explosion-proof assembly; when the device is used, the two first protection rings, the two rupture discs and the two second protection rings form a circular arc extinguish chamber; when electric sparks are generated, due to the shape of the wave-shaped metal partition plate, the electric arc needs to advance along the fluctuating path of waves, the length of the electric arc is greatly increased, the energy density of the electric arc is reduced, when the electric arc encounters the split holes, the electric arc is divided by the split holes to form a plurality of small electric arc branches, and the energy of the small electric arc branches is relatively small; meanwhile, the insulating oil absorbs heat generated by the arc to reduce the temperature of the arc; the heat conduction rod can conduct heat to the outside; under the action of the protection assembly, electric sparks can be eliminated, and the electric sparks are prevented from impacting the explosion-proof shell repeatedly.

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.

A temperature sensor system for a nitrogen tank with a subsea blowout preventer that monitors temperature of the nitrogen in the tank. It is also contemplated to remove rupture discs and utilize a relief valve, which may be assembled with the temperature sensor system.

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 present invention relates to a forming device and a forming method for an alligator-tooth type rupture disc bracket. The forming device for the alligator-tooth type rupture disc bracket includes a linkage assembly, a driving assembly, a reset assembly, a punching cutter, an upper die, a lower die and a base. The lower die is installed on the base, the punching cutter is movably arranged in the lower die, the punching cutter is installed on the reset assembly, the corresponding upper die is arranged above the lower die, the upper die is installed on the driving assembly, and the driving assembly is linked with the punching cutter through the linkage assembly. The present invention is provided with a linkage assembly, and the driving assembly is linked with the punching cutter through the linkage assembly, so that the actions of the upper die and the punching cutter can be synchronously driven by a single driving assembly, realizing the stamping forming and punching forming of the circular blank, reducing the power consumption of the device, and greatly reducing the manufacturing cost.

The present invention provides a fracturing and sand control integrated technology string capable of preventing erosion and conducting deep well flushing, and an operation method thereof. The well control part includes a safety valve with a valve flap, an upper hydraulic anchor, and an annulus packer. The erosion prevention part includes an upper sealing cylinder, a hollow insertion pipe, and a lower sealing cylinder. The deep well flushing part includes a deep well flushing valve, a flushing differential pressure rupture disc, a flushing water outlet, and an in-tubing insertion seal. The layered fracturing part includes a Y344 packer, a ball injection sandblasting sleeve, a normally open sandblasting sleeve, a lower hydraulic anchor, and a check valve seat. By using the present invention, fracturing and self-jet production can be achieved with one trip of the string, which can significantly reduce the construction cost. The present invention prevents blowout accidents caused by erosion damage of the safety valve flap during fracturing through the use of a special safety valve protection mechanism. The present invention uses a deep well flushing device to conduct flushing of the entire string, minimizing the risk of sand jamming of the string to the greatest extent.

The present invention discloses a toe-end sliding sleeve and a wellbore pressure testing method. The toe-end sliding sleeve includes: a tool body, a rupture disk, a pushing mechanism, a moving control sleeve, a sealing sleeve and a sliding sleeve; a rupture disk is arranged between the pressure transmission channel and the inner cavity of the tool body; the pushing mechanism is installed in the first installation groove of the tool body, the sealing sleeve is installed in the inner cavity, the sliding sleeve is installed in the second installation groove of the tool body, and the moving control sleeve is nested between the sealing sleeve and the sliding sleeve; in the initial state, the rupture disk seals the pressure transmission channel, and the pushing mechanism, the moving control sleeve, the sealing sleeve and the sliding sleeve cooperate with the tool body to make the inside and outside of the tool body not communicate; in the use state, when the inner cavity is pressurized, the rupture disk breaks, and the pushing mechanism pushes the moving control sleeve to move in the first direction; when the inner cavity is depressurized, the pushing mechanism resets; after at least one pressurization, the moving control sleeve is separated from the sliding sleeve, and the sliding sleeve moves in the second direction to make the inside and outside of the tool body communicate. It can meet the requirements of multiple pressure tests on the entire wellbore after cementing and before fracturing, and facilitate the construction operation.