846 results about "Screw pump" patented technology

The invention discloses a high-silt-content working condition screw pump control system and method, and belongs to the technical field of soil layer drilling, and the system comprises a multi-mode sensing module, an intelligent decision and control module, a self-adaptive adjustment execution module and a self-cleaning and anti-blocking module. According to the high-mud-content working condition screw pump control system and method, the operation state and medium characteristic data of the screw pump are accurately collected through the multi-mode sensing module, and early prediction and accurate diagnosis of faults are achieved in combination with an advanced data processing algorithm and a deep learning model in the intelligent decision-making and control module; meanwhile, a self-adaptive adjustment execution module and a self-cleaning and anti-blocking module are utilized to dynamically optimize the rotating speed and the gap of the motor and intelligently clean and prevent blocking, so that full-process closed-loop control is formed; finally, multiple beneficial effects of improving the monitoring accuracy, enhancing the anti-interference capability of the system, reducing the maintenance cost, reducing the non-planned downtime, and improving the operation efficiency and stability are achieved.

The invention provides a double-screw pump helical casing molded line forming and milling device, which relates to the field of helical casing processing, and comprises a base, a driving screw, a fixed bracket and a movable table, a threaded cylinder is installed on the bottom side in the moving table, the driving screw is further in engaged connection with the threaded cylinder through threads, two sets of machining material driving shafts are rotationally clamped to the moving table, and supporting structures are further arranged on the lower sides of the foremost ends of the parts, with the large diameters, of the two sets of machining material driving shafts. Lifting structures are further arranged at the front ends of the small-diameter parts of the two sets of machining material driving shafts, the fixing support is fixed to the base, a double-end driving motor is installed at the rear end of the top of the fixing support, and two sets of milling cutter driving shafts are rotationally clamped to the inner side of the upper end of the fixing support; and the rear end of the milling cutter driving shaft is in transmission connection with a motor shaft at the rear end of the double-head driving motor. Two sets of spiral raw materials can be machined at the same time, the manufacturing cost is low, and the problems that an existing machining machine tool is high in investment and low in machining efficiency are solved.

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet, and at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow 5 through the flow chamber from the inlet to the outlet, wherein each screw (4, 5, 6) comprises a release coupling (45, 52, 62) to restrict, when in use, the rotation of the screw when it is being extracted from a molding tool.

Screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; at least two screws (4, 5, 6) housed in the flow chamber to force a fluid flow through the flow chamber from the inlet to the outlet; and a flexible coupling (11) connected to one of the screws to couple the screw to a drive motor (10).

The disclosure relates to a screw pump (2) comprising: a casing (3) with an inlet (30), an outlet (31) and a flow chamber (32) between the inlet and the outlet; and at least two screws (4, 5, 6) housed in the flow chamber to 5 force a fluid flow through the flow chamber from the inlet to the outlet; wherein the casing (3) comprises a shell (33) within which an insert (34) defining the flow chamber is housed.

The invention discloses a novel three-screw pump with a driven screw independently limited, sealed and lubricated, belongs to the technical field of hydraulic delivery pumps, and aims to solve the problems that in an existing three-screw pump working structure, axial force generated by a driving screw and a driven screw is not matched uniformly, and actual use is limited. A convex extension shaft head is integrally manufactured at the rear tail end of a medium inlet low-pressure area of a left driven screw and a right driven screw which are meshed with two sides of a driving screw, a pressure bearing and a mechanical oil seal are mounted on the convex extension shaft head, and a bearing rear end cover is connected to an opening of a rear tailstock through a fixing screw. An inner concave cavity formed by connecting the bearing rear end cover with the rear tailstock, the pressure bearing and the mechanical oil seal alternately form an isolated and independent bearing sealing cavity, and the bearing sealing cavity is filled with lubricating grease for lubricating the pressure bearing. The hydraulic pump is practical in structure and suitable for hydraulic conveying of working media such as high-temperature asphalt with poor lubricating performance.

Eccentric screw pump with a rotor of a drive shaft circulating essentially about a fixed axis in relation to the stator in a bearing block, a power train and a screw conveyor, which revolves in a rotating-oscillating manner in a screw flight of the stator, wherein the power train provides the screw conveyor with its drive torque and the power train adjusts the differences of the motion sequences of the screw conveyor and of the drive shaft, wherein the power train consists essentially of a one-piece rotational body, which has multiple weakening recesses, which interrupt its outer circumferential jacket surface more than only insignificantly and which provide it with that reversible elasticity, which it requires in order to rotate about an axis of rotation, which curves in a periodically recurring manner at least in sections.

The invention discloses a screw pump remote control system for multi-parameter adjustment and fault pre-diagnosis, relates to the technical field of operation monitoring, and is used for solving the problems of insufficient prediction precision and poor reliability caused by the fact that the driving capability is not matched with pump body parameters and the requirements of an underground direct-drive system on accurate matching and dynamic monitoring of pump body performance are difficult to meet. In order to solve the problem of monitoring range adjustment lag in the prior art, multi-dimensional data in the operation process of the screw pump are collected, key characteristic values, symmetry information, axis offset and surface wear degree are extracted, a key monitoring area is determined, a stability index is calculated, and an index regression algorithm is utilized to calculate a dynamic adjustment coefficient so as to set an initial monitoring range. The operation quality type is evaluated through a double-threshold mechanism, the distance between the working temperature and the key position is collected in the medium and poor state, the feature vector is constructed to be input into the support vector regression model, the monitoring range is dynamically adjusted, intelligent recognition and optimal control over the operation state are achieved, and the equipment stability and prediction capacity are improved.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor structure optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the surface of a rotor and the inner wall of a stator in different angle intervals according to the motion trajectory of the surface of the rotor; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the rotor structure according to the geometric wear strength so as to homogenize the wear. From the perspective of structure optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor line type in a segmented manner.

The utility model relates to the technical field of screw pumps, in particular to a screw pump convenient to disassemble and assemble, which comprises a screw pump body, a stator arranged on one side of the screw pump body and an input shaft arranged in an inner cavity of the screw pump body, one side of the input shaft is fixedly connected with a rotor fork seat, a rotor is arranged in the rotor fork seat, and a rotor clamping ring is arranged on the rotor. A limiting assembly used for fixing the rotor is arranged between the rotor clamping ring and the rotor fork seat and comprises a bolt arranged in the rotor fork seat, a clamping plate and a pressing rod are arranged in the bolt, and a hydraulic set is arranged between the clamping plate and the pressing rod. By arranging the limiting assembly, the pressing rod in the bolt can be pushed to enable hydraulic oil in the first push rod to push the second push rod, so that the second push rod pushes the clamping plate to move out of the clamping groove, the bolt can be conveniently and rapidly taken down, limiting and fixing of the bolt to the rotor are omitted, and the rotor can be conveniently detached for maintenance and replacement.

The utility model discloses a multi-stage internal spiral pump driven by a hole type servo motor, which belongs to the technical field of spiral pumps, a stator is matched with a rotor to realize that the rotor drives a rotating sleeve to rotate in a mounting cavity, and when the rotating sleeve and the rotor synchronously rotate, a spiral cavity is formed between a spiral blade in a liquid conveying hole of an internal spiral sleeve and a core shaft; liquid flows from the liquid inlet hole to the circulation hole through the spiral cavity, and then flows to the liquid outlet hole from the circulation hole; the stator and the rotor of the motor, the rotating sleeve related to the screw pump, the inner spiral sleeve and the mandrel are integrated together to form the inner spiral pump of a special structure, the structure of the spiral pump is more compact, the size of the spiral pump is small, the spiral blades are arranged on the inner side wall of the liquid conveying hole of the inner spiral sleeve, and the rotor drives the rotating sleeve and the inner spiral sleeve to rotate. Compared with a conventional pump shaft, the inner spiral sleeve can bear larger twisting force, high-speed liquid conveying of the inner spiral pump is facilitated, and a high-speed high-pressure power source composed of a stator and a rotor can be adapted.

The invention discloses an anti-airlock method and equipment for an electric submersible screw pump based on working condition recognition and a medium, and relates to the technical field of oil exploitation equipment. The method comprises the steps that based on an underground detection device and a ground control cabinet sensor of the electric submersible screw pump unit, operation parameters of the electric submersible screw pump unit are collected in real time, and the operation parameters are preprocessed to obtain standard operation parameters; wherein the operation parameters comprise pump inlet pressure and motor output current; extracting pressure-current correlation characteristics under the airlock working condition to construct an airlock working condition identification model, and inputting the standard operation parameters into the airlock working condition identification model to obtain an airlock state grade; and based on the airlock state grade, the operation regulation and control strategy of the electric submersible screw pump unit is adjusted so as to eliminate the airlock phenomenon. Real-time data of underground and ground sensors are collected, the airlock grade is judged in advance through the airlock working condition recognition model, the operation state is automatically adjusted, and early warning of the airlock is achieved.

The utility model discloses a screw pump with an adjustable shaft seal position structure, which relates to the technical field of screw pumps and comprises a driving screw, a shaft elastic retainer ring is arranged on the outer side of the top of the driving screw and clings to the end of an adjusting shaft sleeve, a sealing gland is fixedly connected to the outer side of the driving screw, and the sealing gland is fixedly connected to the outer side of the driving screw. A bearing seat is arranged at the end, close to the front end cover, of the sealing gland, a screw is in threaded connection with the end, away from the front end cover, of the sealing gland, the bearing seat is in threaded connection with the sealing gland through the screw, and a bearing is arranged at the bottom of the end, close to the front end cover, of the driving screw. Wherein an O-shaped sealing ring groove is formed in the outer surface of the bottom of the driving screw rod, an elastic check ring groove for a hole is formed in the outer surface of the top of the driving screw rod, an adjusting shaft sleeve is arranged on the outer side of the driving screw rod, and the technical problems that the sealing replacement process is tedious, only one sealing material can be selected, and many limitations exist are solved.

The invention provides an oil and gas reservoir fluid high-pressure physical property testing device and method, and belongs to the field of oil and gas field development, the device is composed of a constant temperature box, a PVT kettle body, a screw pump, a piston, a camera, a light source module and a stirrer, the PVT kettle body is placed in the constant temperature box, the PVT kettle body is made of a transparent material, a cylindrical inner cavity is formed in the PVT kettle body, and the screw pump is arranged in the inner cavity; a first guide hole and a second guide hole are respectively formed in the upper part and the lower part of the inner cavity to form a channel for fluid to enter and exit from the PVT kettle body, the piston is arranged in the inner cavity, the screw pump is connected with the piston, the stirrer is arranged in the inner cavity, the camera is arranged outside the constant-temperature box, and the light source module is arranged inside the constant-temperature box. The method is implemented through the testing device and comprises a high-pressure fluid sample transfer test and a single degassing test. According to the device and the method provided by the invention, the high-pressure physical property parameters of the fluid can be accurately measured by a small amount of samples, and key technical indexes are provided for oil-gas field development.

The utility model discloses a screw pump with a laminated shaft seal structure, which relates to the technical field of screw pumps and comprises a screw pump body, a driving screw is arranged at one end of the screw pump body, one end of the screw pump body provided with the driving screw is connected with a bearing seat, one side of the bearing seat is movably connected with a sealing gland, and the other side of the bearing seat is provided with a shaft seal. A plurality of groups of sealing base plates are arranged between the sealing gland and the bearing seat in a stacked mode, the whole effective sealing time is prolonged by multiple times by adopting the multiple shaft seals to be used alternately, shaft seal materials can be selected, the shaft seals made of different materials are adopted, and the medium adaptability and the sealing effect can be more superior and more obvious. By means of the sealing gasket, the shaft seal can be adjusted on the premise that general assembly parts such as a motor and a coupler do not need to be disassembled, maintenance operation is simplified, and maintenance cost is saved.

The utility model discloses a screw pump stator protection mechanism which is arranged on a suction chamber of a screw pump, the suction chamber is fixed on a base, a discharging barrel is arranged on the base, a first flange plate is arranged on the suction chamber, a second flange plate is arranged on the discharging barrel, and the first flange plate and the second flange plate are fixed on the base. The screw pump stator protection mechanism is composed of two half-cylinder structures, arc-shaped flange structures are formed at the two ends of each half-cylinder structure respectively, the arc-shaped flange structures are locked on the first flange plate and the second flange plate through first screw assemblies respectively, a rubber stator is arranged in the screw pump stator protection mechanism, and the rubber stator is arranged in the screw pump stator protection mechanism. The rubber stator is formed by splicing two semicircular rubber cylinders; the problems that one end of an existing stator cylinder is connected with a suction chamber, the other end of the existing stator cylinder is connected with a discharging pipe, and when an internal rubber stator needs to be replaced, the whole discharging pipe needs to be detached from the stator cylinder, and operation is very tedious are solved.

The invention provides a vacuum screw pump set control method. The method comprises the steps that a target value of the needed vacuum degree is input; obtaining an actual value of the vacuum degree of the equipment; obtaining a comparison result of the target value and the actual value; and according to the comparison result, the control system regulates and controls the operation frequency of the screw pump and the operation frequency of the roots pump. Compared with a single-frequency-conversion control method in the prior art, a double-frequency-conversion control method is adopted in the control method, the operation frequency of the screw pump and the operation frequency of the roots pump are controlled at the same time, so that the pumping speed range of the vacuum screw pump set is greatly expanded, and the pumping speed of the vacuum screw pump set is greatly increased through the control method under the condition that a pump body is not replaced. And the pumping speed adjusting range of an original pump set is expanded, so that the pump set can meet more pumping speed adjusting requirements, and an existing upgraded crystal pulling production process is further matched. And according to the comparison result of the actual value and the target value, a corresponding adjustment program is made, so that the vacuum degree in the equipment cavity can meet the requirement, and errors are reduced.

The invention discloses an underground intelligent oil extraction pump and system. The oil extraction pump comprises a plurality of sensors, and an oil pipe, a screw pump, a motor, a gas-liquid separation device and a sand-washable gas anchor which are connected from top to bottom, the sensor is used for collecting underground environment data and motor working state data; the controller is used for acquiring and encoding data acquired by the sensor, receiving a control instruction and sending a corresponding control signal to the motor; the motor drives the screw pump to work according to working parameters indicated by the control signal; the screw pump is used for pumping oil-containing liquid in the well through an oil pipe or pumping cleaning liquid on the well into the well through the oil pipe; the system comprises an underground intelligent oil extraction pump and a ground control cabinet, the ground control cabinet is used for receiving the coded data transmitted by the controller, monitoring the underground working condition and controlling the working state of the motor according to the monitoring result. The oil extraction pump and the system effectively prolong the pump inspection period, save manpower resources, effectively reduce abnormal working conditions in a well, and prolong the service life of the oil extraction pump.

A uniaxial eccentric screw pump includes: a stator having an insertion hole with an inner peripheral surface being internally threaded; and a rotor being externally threaded and placed through the insertion hole. In a cross section, the rotor has a cross-sectional center displaceable in a reciprocating manner in a longitudinal direction of the insertion hole between a pair of turn positions along a center line extending in the longitudinal direction during eccentric rotation of the rotor. The rotor comes in contact with the inner peripheral surface of the insertion hole in a lateral direction of the insertion hole. An interference amount between the rotor and the stator includes a first interference amount when the cross-sectional center is at one of the turn positions and a second interference amount when the cross-sectional center is at a central axis. The first interference amount is larger than the second interference amount.

The invention relates to the technical field of pump body cutting, in particular to high-precision cutting equipment for a metal pump body of a double-screw pump and a using method of the high-precision cutting equipment. The cutting equipment comprises a workbench, a guide rail frame is arranged on the surface of the workbench, a sliding frame is arranged on the surface of the guide rail frame, a storage frame is arranged below the guide rail frame, a clamping assembly is arranged on one side of the storage frame, a cutting assembly is arranged on the surface of an extension plate, and supporting assemblies are arranged on the two sides of the storage frame. Due to the fact that the distance between the pressing plates arranged on the two sides of the cutting machine is the same as the distance between the supporting plates, when the cutting machine drives the pressing plates to move downwards for cutting, the pressing plates and the supporting plates are in extrusion fit, when a pump body cutting material is broken, clamping force between the pressing plates and the supporting plates is borne, and therefore it is guaranteed that the cutting material is fixed to the cutting position; therefore, cut materials are prevented from directly falling off, and the safety of cutting operation is improved.

The invention belongs to the technical field of oil exploitation equipment, and particularly provides a screw pump rotor surface treatment optimization method and system based on wear trajectory quantization, and the method comprises the steps: obtaining the contact conditions of the motion trajectory of feature points on the rotor surface and the inner wall of a stator in different angle intervals according to the motion trajectory of the rotor surface; calculating the geometric wear strength of each feature point according to the contact condition; and optimizing the surface structure of the rotor according to the geometric wear strength so as to homogenize the wear. From the perspective of surface treatment optimization, the problem of uneven wear can be more effectively solved by quantifying the wear track and optimizing the rotor surface treatment in a segmented manner.

Telescoping, self-driving, and laterally-pushing atherectomy devices are provided, each having a flexible sheath, a cutter with helical flutes, and a drive assembly. The drive assembly can have a flexible driveshaft rotatably translational with the lumen of the flexible sheath, a positive displacement pump to transport cut tissue, and a flexible drive shaft that can be longer than the flexible sheath for a reversible telescoping of the drive assembly from the lumen of the flexible sheath. The positive displacement pump can be a screw pump having a drive screw portion exposed for contact with a vascular lumen for a self-driving of the device through the vascular lumen. A reversibly-expandable, lateral pushing member can be included at the distal end of the flexible sheath for a lateral pushing of the cutter. Improved cutting heads, and methods of making them, are provided for cutting a combination of soft and hard plaque.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

The utility model discloses a pump body of a hybrid vacuum pump, which comprises a pump body, a roots pump body cavity and a screw pump body cavity are arranged in the pump body, an air outlet of the roots pump body cavity is communicated with an air inlet of the screw pump body cavity, and an air outlet of the screw pump body cavity is arranged far away from the air inlet of the screw pump body cavity. The screw pump is characterized in that the pump body is further provided with a connecting air channel, the air inlet end of the connecting air channel is communicated with an air inlet of the screw pump body cavity, and the air outlet end of the connecting air channel is communicated with an air outlet of the screw pump body cavity; a one-way valve is further arranged in the connecting air channel. According to the utility model, the operation stability of the vacuum pump is effectively improved, and the vacuumizing effect is ensured.

The invention relates to an external-circulation high-efficiency energy-saving high-viscosity material fermentation system and a use method thereof. The system comprises a fermentation tank, an emulsification shear pump, a buffer tank, a screw pump, a distributor and a static mixer, the fermentation tank is connected with the emulsification shear pump through a fermentation discharge pipe, the emulsification shear pump is connected with the buffer tank through a homogeneous feed pipe, the buffer tank is connected with the screw pump through a buffer material pipe, the screw pump is connected with the distributor through a pumping material pipe, and the static mixer is connected with the screw pump. The distributor is connected with the static mixer through a material distribution pipe; the static mixer is connected with the fermentation tank through a material return pipe; the fermentation tank, the buffer tank and the distributor are all connected with the air supply mechanism, and the fermentation tank and the emulsification shear pump are both connected with the disinfection mechanism. The use method of the fermentation system comprises a disinfection stage, an early fermentation stage and internal and external circulation linkage of fermentation. According to the method, the energy consumption of the fermentation process is effectively reduced, the yield of single-batch exopolysaccharides is greatly increased, and the productivity is greatly improved.

The utility model discloses a high-temperature single-suction double-screw pump which comprises a pump body and a bearing seat, a connecting plate is connected to the front end of the pump body, a rear cover is installed at the rear end of the pump body, an outlet pipe is arranged on the rear cover, a mechanical seal is installed on the connecting plate, a driving shaft and a driven shaft penetrate through the mechanical seal, and a front cover is installed at the front end of the bearing seat. The double-row angular contact ball bearings are matched with the driving shaft and the driven shaft respectively, single-row cylindrical roller bearings matched with the driving shaft and the driven shaft respectively are installed at the rear end of the bearing seat, the front end of the driving shaft is sleeved with a first gear, the front end of the driven shaft is sleeved with a second gear, and the portions, located in the pump body, of the rear end of the driving shaft and the rear end of the driven shaft are sleeved with threaded sleeves. An inlet pipe is arranged at the position, close to the front end of the pump body, of the side face of the pump body, and the front end of the driving shaft penetrates through the front cover. A water cooling cavity is formed in the outer side of the pump body and provided with a water inlet and a water outlet. The high-temperature single-suction double-screw pump can keep the temperature of the pump cavity at a normal level.

A uniaxial eccentric screw pump includes: a stator having an insertion hole with an inner peripheral surface being internally threaded; and a rotor being externally threaded and placed through the insertion hole. In a cross section, the rotor has a cross-sectional center displaceable in a reciprocating manner in a longitudinal direction of the insertion hole between a pair of turn positions along a center line extending in the longitudinal direction during eccentric rotation of the rotor. The rotor comes in contact with the inner peripheral surface of the insertion hole in a lateral direction of the insertion hole. An interference amount between the rotor and the stator includes a first interference amount when the cross-sectional center is at one of the turn positions and a second interference amount when the cross-sectional center is at a central axis. The first interference amount is larger than the second interference amount.

The utility model discloses an oil-gas mixed transportation double-suction double-screw pump which comprises a pump body, a left-right through inner shell is arranged in the pump body, a driving shaft and a driven shaft which are parallel to each other are arranged in the inner shell in a penetrating mode, the rear ends of the driving shaft and the driven shaft are meshed after penetrating through the pump body in a sealing and rotating mode, and the front ends of the driving shaft and the driven shaft are arranged on the pump body in a sealing and rotating mode. Two blocking rings are arranged between the outer wall of the inner shell and the inner wall of the pump body in a bilateral symmetry mode, a plurality of discharging ports are formed in the position, located between the two blocking rings, of the inner shell, the positions, located in the inner shell, of the driving shaft and the driven shaft are each sleeved with a left-right two-way spiral sleeve, the two left-right two-way spiral sleeves are meshed, and an inlet shell is arranged outside the pump body. Inlet holes communicated with the inlet shell are formed in the positions, located on the outer sides of the two blocking rings, of the outer wall of the pump body, and outlet holes are formed in the positions, located on the inner sides of the two blocking rings, of the outer wall of the pump body. According to the oil-gas mixed transportation double-suction double-screw pump, when the oil viscosity is increased, the volume efficiency is improved by reducing leakage, and therefore the efficiency of the screw pump is improved.

The embodiment of the invention provides a multi-component proppant migration analysis device and an experimental method. The device comprises a plurality of independent sand tanks, a plurality of flow control valves, a ground manifold, a screw pump, a proppant migration simulation system, a laser particle size sensor and a data acquisition system, the outlet of each independent sand tank is connected with the corresponding flow control valve; the outlet end of each flow control valve is communicated with the inlet end of the ground manifold, the outlet end of the ground manifold is connected with the feed port of the screw pump, and the discharge port of the screw pump is connected to the inlet end of the proppant migration simulation system; the laser particle size sensor is fixed on the outer side of the proppant migration simulation system; and the data acquisition system is connected with the laser particle size sensor, the plurality of flow control valves and the screw pump. The device provides reliable experimental data support for optimization of a field hydraulic fracturing scheme.

The utility model discloses a triangular-cone-shaped high-temperature-resistant and hydrogen-sulfide-resistant screw pump sealing impact device, the main body structure of the triangular-cone-shaped high-temperature-resistant and hydrogen-sulfide-resistant screw pump sealing impact device is a lower sealing occlusion ring and an upper sealing occlusion ring which are occluded up and down, and the triangular-cone-shaped high-temperature-resistant and hydrogen-sulfide-resistant screw pump sealing impact device comprises the lower sealing occlusion ring and the upper sealing occlusion ring, the bottom face of the upper sealing meshing ring is provided with a triangular cone-shaped meshing groove, and the material has the advantages of being good in high temperature resistance, hydrogen sulfide resistance and abrasion resistance, high in strength and good in toughness. Through the arrangement of the lower sealing occlusion ring and the upper sealing occlusion ring, close fit of the lower sealing occlusion ring and the upper sealing occlusion ring can be achieved, the occlusion face is of the regular triangular cone type three-dimensional structure distributed in the radial direction, the structure has the good impact resistance and anti-scouring characteristics, the overall structure is simple in process, convenient to install and long in service life, and the service life is long. The stable sealing performance of the sealing device in a high-temperature and hydrogen sulfide environment is ensured, and medium leakage is prevented.