33results about How to "Reliable expansion" patented technology

The present invention generally relates to a method and an apparatus for connecting an add-on pipe segment to a pipe string to lengthen the pipe string using friction stir welding. The pipe string is suspended in a borehole using a spider or some other pipe suspending device, and the lower end of the pipe segment is brought into an abutting or nearly abutting relationship with the proximal end of the pipe string positioned above the pipe suspending device and above the rig floor. The friction stir welding machine is brought to well center to weld the abutment or gap between the pipe segment and the pipe string and join the pipe segment to the pipe string to lengthen the pipe string. In one aspect, the method includes friction stir welding an expandable pipe segment to an expandable pipe string to form a lengthened expandable pipe string. The pipe segment may be comprised of two or more pipe segments that have been friction stir welded or conventionally welded to form a pipe stand. After friction stir welding to lengthen the pipe string, the lengthened pipe string is lowered into the borehole and the proximal end of the lengthened pipe string is favorably positioned to abut or nearly abut a new add-on pipe segment for friction stir welding at the resulting abutment or gap. The friction stir welding process provides a highly reliable pipe joint for expansion.

An expandable tubing assembly comprises a tubular connector defining overlapping longitudinal slots, the connector comprising end portions and an intermediate portion. The slots extend over the whole length of the connector, but the only slot overlap occurs in the intermediate portion. The assembly further comprises lengths of expandable tubing defining overlapping longitudinal slots and having end portions defining nodes between and beyond the ends of the tubing slots. Tubing threads are formed on the end most tubing nodes. The connector end portions define threads and are coupled with the threads formed on the nodes of the respective end portions of the tubing lengths.

The present invention provides an upsetting method capable of unevenly expanding the diameter of a portion to be expanded in the circumferential direction of a blank. A guide body (20) having an insertion hole (21) through which the planned diameter expansion portion (2) of the holding blank (1) is inserted in a vertical bending preventing state is prepared. A protruding piece portion (22) for suppressing diameter expansion that protrudes in the axial direction of the guide body (20) is integrally provided on a part of the front end portion (20a) of the guide body (20). The predetermined diameter expansion portion (2) of the blank (1) fixed in the stationary mold (10) is inserted and held in the insertion hole (21) of the guide body (20). Next, while moving the punch (30) and pressing the portion (2) of the blank (1) to be enlarged by the punch (30) in the axial direction, the guide body (20) is directed toward the punch (30) is moved in the opposite direction of the moving direction, whereby the planned diameter expansion portion (2) of the blank (1) exposed between the front end portion (20a) of the guide body (20) and the fixed mold (10), The diameter expansion is performed in a state where the diameter expansion is suppressed for the contact portion of the planned diameter expansion portion (2) with the protruding piece portion (22).

The invention relates to an arrangement (21) which comprises an energy storage module (1), a module support (19), in particular a vehicle body, and a ball lock pin (22) designed for securing the energy storage module (1) on the module support (19).

An expandable tubing assembly comprises a tubular connector defining overlapping longitudinal slots, the connector comprising end portions and an intermediate portion. The slots extend over the whole length of the connector, but the only slot overlap occurs in the intermediate portion. The assembly further comprises lengths of expandable tubing defining overlapping longitudinal slots and having end portions defining nodes between and beyond the ends of the tubing slots. Tubing threads are formed on the end most tubing nodes. The connector end portions define threads and are coupled with the threads formed on the nodes of the respective end portions of the tubing lengths.

An array linkage type solar energy two-degree-of-freedom tracking system comprises a supporting mechanism, a tracking mechanism, a linkage mechanism, and a driving device, wherein the supporting mechanism supports a battery panel tray by using a cardan joint and a vertical shaft; the tracking mechanism is connected to a transmission gear by using the linkage mechanism, the driving device is connected to the linkage mechanism, the linkage mechanism is connected to a tracking crank by using a linkage diverter and a linkage connecting rod, and performs successive disjunction distribution and winding cascading on two types of linkage nodes a and b along an azimuth angle (or altitude angle) linkage direction by using a steel wire rope, to implement power transmission between nodes in an array. According to the present invention, the quantity of driving devices and the quantity of sensors are reduced, a structure is relatively simple, and array linkage type solar energy two-degree-of-freedom tracking is implemented with low costs, so that not only a solar energy utilization ratio is improved, but also a geography adaptive capacity is enhanced, and array expansion is simpler and more convenient; and the quantity of battery panel components carried by a single tracking device is greater, and an area is larger.

The invention discloses an offline wireless parallel operation method of a plurality of energy-storing converters in a large-capacity energy storing system. The method is that the energy storing converters are free of interconnection wires, so that each energy storing converter independently acquires three-phase voltage and three-phase current at each AC side to be independently controlled; when the large-capacity energy storing system is operated offline, each energy storing converter is subjected to droop control; each energy storing converter is selectively converted into an offline working mode or quitted from the offline working mode according to the photoelectric generating, wind-powered generating and load conditions; the corresponding working mode of each energy storing converter is converted according to the working state of each energy storing element. With the adoption of the method, energy storing converters can be plugged and played, the problem that the capacity of the large-capacity energy storing system is difficultly expanded during independent operating is solved, and therefore, the usability and stability of the system are improved; the system operation mode is flexible; the energy storing elements can be maintained and overhauled conveniently, and as a result, the service lives of the energy storing elements can be prolonged.

The invention relates to an apparatus for detecting the expansion of cells of a battery pack and a power battery pack. The detection device comprises a fixed rack and a cell expansion detection unit.The fixed rack comprises a first installation plate and a second installation plate, which are oppositely arranged. The first installation plate is provided with two installation holes, wherein the distance between two installation holes is smaller or equal to the normal thickness of cells. The cell expansion detection unit comprises an annular metal belt, an elastic part, and a tensile force sensor. The annular metal belt goes through two installation holes. The part, which is arranged between the first installation plate and the second installation plate, of the annular metal belt forms a connection part, and the rest part forms a cell wrapping part. One end of the elastic part is connected to the connection part of the annular metal belt, the other end is connected to the tensile forcesensor, and the tensile force sensor is fixedly connected to the second installation plate. The provided apparatus can monitor the volume expansion of a single cell in a battery pack in real time, andthe expansion situation of the single cell in the battery pack can be represented more accurately and reliably.

The invention relates to an ablation catheter device with a mapping function. The device comprises a handle, a wire, a pulse generation circuit, an operation control device, a metal valve, a first catheter and a flexible circuit, wherein the first catheter is located at the far end of the handle, the far end of the first catheter is movably connected with a second catheter, the second catheter and the first catheter are mutually nested, and a catheter head is arranged at the far end of the second catheter; the metal valve is sheet-shaped, one end of the metal valve is connected with the first catheter, the other end of the metal valve is connected with the second catheter, the flexible catheter comprises a non-conductive base material, and the non-conductive base material is fixed on the outer surface of the metal valve; a conductive layer is fixed on the outer surface of the non-conductive base material; and a non-conductive covering material partially covers the outer surface of the conductive layer, and the non-covered part of the conductive layer forms an electrode. The device has the advantages that the device can be well attached to endocardium tissue, ablation and mapping can be achieved, the ablation range and angle are reasonable, and operation is convenient.

A fluid container for packing a product includes a check valve for each container member. A bonding structure of check-valves to a fluid container and a production method and apparatus of fluid container are disclosed in detail where the check valve is capable of reliably keeping the expansion of the fluid container without any fluid leakage after inflating the fluid container. As the check-valve is bonded to only one of thermoplastic container films, both films of the check-valve are fixed to one of the container films, thereby preventing the reverse flow by tightly closing the check valve. The manufacturing apparatus includes an up-down roller controller which precisely positions the films to form the check valve. The manufacturing apparatus can produce the fluid container with high reliability by having a belt conveyor specially designed for cooling down the heat sealed films before separating from the belt conveyor without damage.

A fluid container for packing a product includes a check valve for each container member. A bonding structure of check-valves to a fluid container and a production method and apparatus of fluid container are disclosed in detail where the check valve is capable of reliably keeping the expansion of the fluid container without any fluid leakage after inflating the fluid container. As the check-valve is bonded to only one of thermoplastic container films, both films of the check-valve are fixed to one of the container films, thereby preventing the reverse flow by tightly closing the check valve. The manufacturing apparatus includes an up-down roller controller which precisely positions the films to form the check valve. The manufacturing apparatus can produce the fluid container with high reliability by having a belt conveyor specially designed for cooling down the heat sealed films before separating from the belt conveyor without damage.

A tube expander for heat exchangers is capable of organizing an ideal production line where the transportation efficiency is increased and the productivity is improved by having a transportation path in a straight line, that is, applying a method where the heat exchangers are carried into one end of the tube expander (in the left and right direction) and carried out from the opposite end, that is, the other end (so called through-the-center method). The left and right ends of the end plate (9) at the front side are inserted by a pair of first guide bars (10), and the left and right ends at the back side are inserted by a pair of second guide bars (11). A guide path (2a) a for a carrying device (24) or a guide path (2) a to install a transportation device, in either case, the heat exchangers are transported from one end to the other of the base (2), is established on the base (2) that supports the first guide bars (10) and the second guide bars (11) in a clearance between the first guide bars (10) and the second guide bars (11).

The invention discloses a skin tissue expander, comprising an absorption pan body and a second permanent magnet, wherein the absorption pan body is internally provided with an axially moving tension part; the tension part is connected with the absorption pan body or a movable par installed on the absorption pan body in a screwing way; the tension part is provided with a first permanent magnet; the second permanent magnet is externally packed with a layer of human body compatible material or inert material. Compared with the existing skin tissue expander, the permanent magnet embedded under the skin tissue and the permanent magnet embedded on the absorption pan body generate magnetic field magnetism due to inverse magnetic poles, so that the second permanent magnet embedded under the skin tissue drives the skin tissue to be outwards expended, to lead the skin tissue to be outwards swelled to form an expanding effect, and prevent the existing expander from inwards expensing to stress adjoining tissues, blood vessels and nerves or organs, and not to sink base tissues.

A tube expander for heat exchangers is capable of organizing an ideal production line where the transportation efficiency is increased and the productivity is improved by having a transportation path in a straight line, that is, applying a method where the heat exchangers are carried into one end of the tube expander (in the left and right direction) and carried out from the opposite end, that is, the other end (so called through-the-center method). The left and right ends of the end plate 9 at the front side are inserted with a pair of first guide bars 10 , and the left and right ends at the back side are inserted with a pair of second guide bars 11 . A guide path 2a for a carrying device 23 or a guide path 2a to install a transportation device, in either case, the heat exchangers are transported from one end to the other of the base 2 , is established on the base 2 that supports the first guide bars 10 and the second guide bars 11 in a clearance between the first guide bars 10 and the ball screw 20.

The invention relates to a leakage prevention and stoppage tool for a loess layer and a using method of the leakage prevention and stoppage tool. The leakage prevention and stoppage tool at least comprises a pipe body and further comprises a rubber cylinder assembly and a sliding sleeve which are sequentially arranged on the pipe body in a sleeving mode from top to bottom; and an upper steel ringand a lower steel ring are arranged at the two ends of the rubber cylinder assembly correspondingly, the upper steel ring is fixed to the upper part of the pipe body, a shear pin is arranged between the lower steel ring and the lower part of the pipe body, when the lower pressure is greater than the bearing capacity of the shear pin, the shear pin is sheared off, the sliding sleeve moves upwards,and thus the sliding sleeve is extruded axially. During using, the leakage stoppage tool is connected with a guide pipe string entering a well to be lowered into a loess borehole, after the guide pipestring reaches the well bottom, the sliding sleeve makes contact with the well bottom, guide pipes downwards press the sliding sleeve through the self weight, the shear pin is sheared off, and the guide pipe string continues moving downwards to extrude a rubber cylinder; and the rubber cylinder is compressed in the axial direction and expanded in the radial direction to make contact with the wellwall so as to be sealed. According to the using method, an annulus between the guide pipe string and the borehole in the loess layer is reliably packed and blocked at the well bottom, so that duringsubsequent drilling, circulating drilling fluid does not make contact with the loess layer, and the leakage prevention and stoppage effects are achieved.

The invention discloses coalbed methane mining auxiliary equipment. According to the coalbed methane mining auxiliary equipment, a mode of centralizing local area extraction is adopted, and the extraction efficiency and reliability can be effectively improved without the excessive extraction power; a ring flange positioning assembly is used for positioning, auxiliary hollow rods can be swung at acertain amplitude with an angle adjustment assembly as a supporting point, in the way, the auxiliary hollow rods can conveniently extend into coalbed extraction drilling holes, and the layout efficiency of extraction pipes is improved; extraction rods extend into the auxiliary hollow rods to protect the extraction rods, and the risk that fractures are produced due to the fact that the extraction rods are placed in the drilling holes is prevented; the space between a first expansion sleeve assembly and a second expansion sleeve assembly can be conveniently adjusted to realize key extraction; and expansion of the first expansion sleeve assembly and the second expansion sleeve assembly is more reliable, a hydraulic mode is used for expansion, a porous inner expansion sleeve is arranged internally, expansion can be more uniform, the tightness is improved, and the service life is prolonged.

The invention relates to a small sample gas concentration prediction method based on improved GAN and LSTM. The method comprises the following steps: acquiring historical data of target gas concentration; preprocessing the historical data of the target gas concentration, and constructing to obtain a historical data set; a historical data set is expanded through the improved GAN, an expanded data set is obtained, and in order to avoid the gradient disappearance problem of the GAN in the training process, a Wasserstein distance is used for constructing a loss function to improve the GAN; dividing the expanded data set into a training set and a test set according to a set proportion; training the LSTM network by using the training set and the test set to obtain a gas concentration prediction model; and inputting gas data which actually needs to be predicted into the gas concentration prediction model, and outputting to obtain a corresponding predicted gas concentration. Compared with the prior art, the method has the advantages that negative effects caused by insufficient samples can be eliminated, the problem of small sample gas concentration prediction can be effectively solved, and the gas concentration prediction precision is improved.

A method and a device for upsetting capable of non-uniformly increasing the diameter of the unintended part of a material in the circumferential direction. The method comprises a step of preparing a guide (20) having an insertion hole (21) in which the unintended part (2) of the material (1) is inserted and held in a buckling prevented state. In the device, a projected part (22) for suppressing an increase in diameter projecting in the axial direction of the guide (20) is integrally formed at a part of the tip part (20a) of the guide (20). The method also comprises a step of holdingly inserting the intended part (2) of the material (1) fixed to a fixed die (10) into the insertion hole (21) of the guide (20) and, while axially pressurizing the intended part (2) of the material (1) with a punch (30) by moving the punch (30), moving the guide (20) in an opposite direction to the moving direction of the punch (30) to increase the diameter of the intended part (2) of the material (1) exposed between the tip part (20a) of the guide (20) and the fixed die (10) in the state of suppressing an increase in the diameter of the contact part of the intended part (2) with the projected piece part (22).

The invention provides an automatic expanding connection device at an engine oil filling port. The automatic expanding connection device comprises a case. An expanding connection die is arranged on the case which is internally provided with a pneumatic power system. The expanding connection die is connected with the pneumatic power system through a lifting cylinder and composed of a flange plate fixing part and an engine oil filling port expanding connection part. The engine oil filling port expanding connection part is arranged in the center of the flange plate fixing part and composed of a plurality of expanding connection petals and an expanding connection shaft. An expanding connection protrusion is arranged outside each expanding connection petal. A circle is defined by the expanding connection petals in a surrounded mode. The expanding connection shaft is located in the center of the circle defined by the expanding connection petals in the surrounded mode and connected with the lifting cylinder. A foot switch is arranged outside the case. The pneumatic power system is controlled by the foot switch. According to the automatic expanding connection device at the engine oil filling port, premise requirements for the brazing process are met; the automatic expanding connection device is convenient and efficient to use and has multiple functions by means of electric control; and the automatic expanding connection device is suitable for automatic expanding connection for multiple types of products.

A passenger-seat airbag includes a left airbag (44) and a right ajrbag (46), a root portion (48) connects a left-airbag root portion and a right-airbag root portion. An accordion-folded portion (72) with relatively small folding widths is formed by accordion-folding both side portions of the root portion (48), whereby at least a gas-injection hole (70A) closest to each of both ends of an inflator (28) in a longitudinal direction among a plurality of the gas-injection holes (70) of the inflator (28) is prevented from being closed by the root portion (48) when the passenger-seat airbag is provided in a vehicle.

The invention provides an expansion connection device for heat exchange pipes and heat radiating fins, belongs to the technical field of machinery, and solves the technical problems of bad expansion connection effect and the like caused by the fact that the expansion connection device in the prior art implements expansion connection by using air pressure, so that unstable pressure is likely to occur due to bad sealing. The expansion connection device for the heat exchange pipes and the heat radiating fins comprises a worktable and expansion rods, wherein a positioning barrel is arranged on the worktable; one end of the positioning barrel is provided with an opening; a positioning plate is fixedly arranged on the other end of the positioning barrel; the external diameter of each expansion rod is smaller than the internal diameter of each heat exchange pipe; an expansion head is fixedly arranged on one end of each of the expansion rods; the other end of each of the expansion rods is connected with a moving mechanism capable of driving the expansion rod to axially move; the section of each expansion head is in a circular truncated cone shape; a round through hole is formed in the positioning plate; the aperture of the through hole is smaller than the external diameter of each of the heat exchange pipes, but greater than the external diameter of one end, far away from one expansion rod, of the corresponding expansion head. The expansion connection device has the advantages of rapidly implementing expansion connection on the heat exchange pipes and the heat radiating fins, and being stable in expansion connection quality.

A tube expander for heat exchangers is capable of organizing an ideal production line where the transportation efficiency is increased and the productivity is improved by having a transportation path in a straight line, that is, applying a method where the heat exchangers are carried into one end of the tube expander (in the left and right direction) and carried out from the opposite end, that is, the other end (so called through-the-center method). The left and right ends of the end plate (9) at the front side are inserted by a pair of first guide bars (10), and the left and right ends at the back side are inserted by a pair of second guide bars (11). A guide path (2a) a for a carrying device (24) or a guide path (2) a to install a transportation device, in either case, the heat exchangers are transported from one end to the other of the base (2), is established on the base (2) that supports the first guide bars (10) and the second guide bars (11) in a clearance between the first guide bars (10) and the second guide bars (11).

The invention relates to an apparatus for detecting the expansion of cells of a battery pack and a power battery pack. The detection device comprises a fixed rack and a cell expansion detection unit.The fixed rack comprises a first installation plate and a second installation plate, which are oppositely arranged. The first installation plate is provided with two installation holes, wherein the distance between two installation holes is smaller or equal to the normal thickness of cells. The cell expansion detection unit comprises an annular metal belt, an elastic part, and a tensile force sensor. The annular metal belt goes through two installation holes. The part, which is arranged between the first installation plate and the second installation plate, of the annular metal belt forms a connection part, and the rest part forms a cell wrapping part. One end of the elastic part is connected to the connection part of the annular metal belt, the other end is connected to the tensile forcesensor, and the tensile force sensor is fixedly connected to the second installation plate. The provided apparatus can monitor the volume expansion of a single cell in a battery pack in real time, andthe expansion situation of the single cell in the battery pack can be represented more accurately and reliably.

The invention provides a lifting device for pipe piles, which belongs to the field of mechanical devices. The lifting device includes an upper top cover, a housing cavity, a traction body, a flat suspension arm, a limit plate, an extended expansion plate, a hydraulic driver and a swing cam; the upper top cover, the housing cavity, and the traction body are connected to form a The cavity, the stretching expansion plate, the hydraulic driver and the swing cam are all installed in this cavity; the swing cam is installed on the support seat inside the cavity of the housing, powered by the hydraulic drive, and can swing, and during the swing process In the middle, the stretching expansion plate in contact with it is stretched out or retracted in the window on the cavity of the shell, so as to realize the expansion and loosening of the pipe pile. The overall structure of the lifting device proposed by the present invention is simple, the processing of each component is convenient, and the processing cycle and cost are reduced; the complexity of the device system is low, the possibility of device failure is reduced, and the stability and safety of the pile lifting process are guaranteed; the swing cam The structure is simple and the size is small, so that the overall weight of the device is light.

The invention discloses a skin tissue expander, comprising an absorption pan body and a second permanent magnet, wherein the absorption pan body is internally provided with an axially moving tension part; the tension part is connected with the absorption pan body or a movable par installed on the absorption pan body in a screwing way; the tension part is provided with a first permanent magnet; the second permanent magnet is externally packed with a layer of human body compatible material or inert material. Compared with the existing skin tissue expander, the permanent magnet embedded under the skin tissue and the permanent magnet embedded on the absorption pan body generate magnetic field magnetism due to inverse magnetic poles, so that the second permanent magnet embedded under the skin tissue drives the skin tissue to be outwards expended, to lead the skin tissue to be outwards swelled to form an expanding effect, and prevent the existing expander from inwards expensing to stress adjoining tissues, blood vessels and nerves or organs, and not to sink base tissues.

The present invention discloses a reaming bit for anchor rod, anchor rope and pile in civil engineering and its reaming method. It is aimed at providing a reaming bit for anchor rod, anchor rope and pile in civil engineering which has firm structure, extensive application range and easy operation and maintenance. Said bit is characterized by that between end shaft sleeve and rear shaft sleeve of the bit the front and rear drill blades are uniformly distributed, hinge and arranged, and centrifugal force produced by rotating drilling rod and pressing force subjected by end shaft sleeve can make the bit which is rotated for drilling hole be outwards expanded so as to obtain the goal of reaming hole.

The invention provides an automatic expanding connection device at an engine oil filling port. The automatic expanding connection device comprises a case. An expanding connection die is arranged on the case which is internally provided with a pneumatic power system. The expanding connection die is connected with the pneumatic power system through a lifting cylinder and composed of a flange plate fixing part and an engine oil filling port expanding connection part. The engine oil filling port expanding connection part is arranged in the center of the flange plate fixing part and composed of a plurality of expanding connection petals and an expanding connection shaft. An expanding connection protrusion is arranged outside each expanding connection petal. A circle is defined by the expanding connection petals in a surrounded mode. The expanding connection shaft is located in the center of the circle defined by the expanding connection petals in the surrounded mode and connected with the lifting cylinder. A foot switch is arranged outside the case. The pneumatic power system is controlled by the foot switch. According to the automatic expanding connection device at the engine oil filling port, premise requirements for the brazing process are met; the automatic expanding connection device is convenient and efficient to use and has multiple functions by means of electric control; and the automatic expanding connection device is suitable for automatic expanding connection for multiple types of products.