837 results about "EXTENSION TUBES" patented technology

The invention provides a dual-control underground cable intelligent water distributor which comprises an upper connector, an upper shell, a connecting body, a lower shell and a lower connector which are connected in sequence, a central pipe is nested in the upper shell, the two ends of the central pipe are in sealed connection with the upper connector and the connecting body respectively, and an adjusting sleeve is nested in the lower shell. The two ends of the adjusting sleeve are sealed with the connecting body and the lower connector respectively, and the adjusting mechanism, the electric control mechanism and the driving mechanism are arranged in a gap between the upper shell and the center pipe respectively. The dual-control underground cabled intelligent water distributor has the beneficial effects that the dual-control underground cabled intelligent water distributor has two measurement and control processes which do not influence each other, the service life of a pipe column can be effectively prolonged, the dual-control underground cabled intelligent water distributor is suitable for an existing cabled intelligent process pipe column, the cable throwing and fishing measurement and control capability is increased on the basis of an existing cabled intelligent working barrel, and the service life of the cable is prolonged. Therefore, the purposes of two control modes of cabling and measuring and adjusting are achieved, and the requirements of multi-layer-section layered water injection, accurate injection allocation and real-time measuring and adjusting are met.

The invention discloses a noise reduction method of a bionic fish scale blade centrifugal pump, which comprises the following steps that a long and short blade centrifugal pump is selected for research, and the main design parameters of the long and short blade centrifugal pump are as follows: the specific speed ns is equal to 40.79, the rated flow Qd is equal to 10.6 m < 3 > / h, the lift H is equal to 34m, and the rotating speed n is equal to 2900r / min; a computational domain three-dimensional model of the long and short vane centrifugal pump is established through Creo8.0; in order to prevent backflow of inlet and outlet sections, ensure that fluid stably flows into an impeller and ensure the accuracy of a simulation result, extension pipelines are additionally arranged at an impeller inlet and a volute outlet of the centrifugal pump, the pipe diameter of the inlet extension section is 4 times that of the outlet extension section, and the pipe diameter of the outlet extension section is 8 times that of the inlet extension section; in order to verify the accuracy of a calculation result, a centrifugal pump experiment platform is built for external characteristic experiments; the bionic fish scale pit has the advantages that the dynamic and static interference between the impeller and the volute is reduced, the pressure fluctuation in the pump is stabilized, the amplitude fluctuation of a wave number-frequency spectrum and the energy region of a low wave number region are reduced, the migration of a wave number-frequency spectrum peak ridge is reduced, the curve change is gentle, and then the noise reduction effect is achieved.

The invention relates to the technical field of water heating pipeline welding, and discloses a pipe orifice laser welding tool for butt joint of anti-leakage water heating pipelines, which comprises a laser welding table, two side plates are symmetrically distributed at the top of the laser welding table, placing cylinders are arranged on the two side plates, and pipeline bodies are arranged in the two placing cylinders; an L-shaped plate is further arranged at the top of the laser welding table, a first electric push rod is arranged at the top of the L-shaped plate, and a laser welding head is arranged at the output end of the first electric push rod. According to the pipe orifice laser welding tool for butt joint of the leakproof water heating pipelines, the problem of traditional welding position deviation is effectively solved through the calibration component. Under the action of the pushing assembly and the limiting assembly, the position of the pipeline is accurately adjusted through movement of the inner rod and compression and release of the calibration spring, and it is ensured that a connector and a laser welding head are accurately aligned. The process effectively avoids insufficient welding and welding skips, forms uniform and compact welding seams, reduces the leakage risk during operation of the water heating system, prolongs the service life of the pipeline, and reduces the later maintenance cost.

The invention discloses a grouting pipe with multiple grouting modes and capable of being flexibly adjusted and a using method, and belongs to the technical field of building construction equipment.The grouting pipe comprises an outer grouting pipe body, an inner grouting pipe body, an inner grouting pipe body A extension pipe, an inner grouting pipe body B extension pipe, an outer grouting pipe body A extension pipe and an outer grouting pipe body B extension pipe; the inner grouting pipe and the outer grouting pipe are connected through a fixing device and a rotating structure, standard grouting holes are formed in the positions, at 0 degree, 90 degrees, 180 degrees and 270 degrees, of the inner grouting pipe from top to bottom from a grouting area, and standard grouting holes are formed in the positions, at 70 degrees, 160 degrees, 250 degrees and 340 degrees, from top to bottom from the grouting area. Standard grouting holes are formed in the positions, at 0 degree, 90 degrees, 180 degrees and 270 degrees, of the outer grouting pipe from top to bottom from the grouting area. The problems that the grouting pipe is narrow in application range and grout is wasted can be solved, multiple grouting modes are achieved on one set of grouting pipe, and the grouting position and the grouting flow can be flexibly controlled.

The utility model relates to the technical field of refrigerants, and discloses an automatic refrigerant filling device which comprises a conveying pipe, the right end of the conveying pipe penetrates through and is fixedly connected with a flow meter, the right end of the flow meter penetrates through and is fixedly connected with a first electromagnetic valve, and the right end of the first electromagnetic valve penetrates through and is fixedly connected with an output pipe. The right end of the output pipe penetrates through and is fixedly connected with a storage tank, the top of the outer ring of the conveying pipe penetrates through and is fixedly connected with a second electromagnetic valve, the top of the second electromagnetic valve penetrates through and is fixedly connected with a connecting pipe, the left end of the connecting pipe penetrates through and is fixedly connected with a connector, and the left end of the connector is fixedly connected with an extension pipe. According to the device, through the extension pipe, the threaded ring, the fixing ring, the connector, the suction cup and the extrusion cover, the extension pipe is inserted into a filling port of equipment needing to be filled, then the threaded ring is rotated for threaded connection, then the suction cup slides, the suction cup is moved to the outer side of the fixing ring, and the suction cup and the port are used for sucking.

A device may include an elongated body comprising an opening configured to receive a receiver extension tube of a firearm. A device may include a brace body affixed distally to the elongated body and comprising a window configured to receive a clamp mount, wherein the clamp mount is configured to retain the arm brace in a fixed position on the receiver extension tube and comprises: one or more clamps comprising at least one through-hole and one or more pads, wherein the one or more pads are configured to engage with the receiver extension tube via adjustment of one or more fasteners interfacing with the at least one though-hole.

A vascular access instrument advancement device may include a housing and an extension tube extending through the housing. The extension tube may extend through the housing. The extension tube may include a first lumen and a second lumen. A blood collection pathway may extend through the first lumen. A wedge may be disposed within the housing and the second lumen of the extension tube. A pair of opposing pinch members may be configured to pinch the extension tube. The pair of opposing pinch members may be disposed within the housing proximal to the wedge and configured to move along the extension tube with the housing. An instrument may extend distally from the wedge. The instrument may be disposed within the second lumen. In response to moving the housing distally along the extension tube, the pair of opposing pinch members push the wedge distally and the instrument is advanced distally.

The utility model is suitable for the technical field related to medical instruments, and provides a valve auxiliary system sheath which comprises a shell assembly and a catheter sheath tube arranged on the shell assembly. The bending adjusting handle is used for adjusting the angle of the tail end of the catheter sheathing canal, and the bending adjusting handle is connected with the shell assembly; the catheter sheath is used for being matched with the catheter sheath tube to achieve introduction of an interventional instrument or conveying of an auxiliary instrument; the flushing valve is used for conveying medicaments, and the flushing valve is communicated with the catheter sheath through an extension tube body; the catheter sheath tube, the catheter sheath, the flushing valve and other components are arranged in a matched mode, so that the dilator can be always kept in the catheter sheath tube in the original position in the process that the catheter sheath tube enters the access blood vessel of a patient, blood cannot permeate out of a product, use is convenient, and the valve positioning accuracy and the operation safety are effectively improved.

The invention belongs to the technical field of geothermal energy development and utilization, and particularly relates to efficient extraction equipment for a deep geothermal exploitation well, which comprises a plurality of water pumping devices, the plurality of water pumping devices are sequentially communicated in series through a plurality of extension pipe fittings, and the water pumping device close to a wellhead is fixedly connected with a steel wire rope on hoisting equipment; the water pumping device comprises a water pumping mechanism, a well cementation assembly and a guide mechanism, the outer wall of the water pumping mechanism is sleeved with the well cementation assembly, the well cementation assembly is used for making friction contact with the well wall so as to keep the working position of the water pumping mechanism in a well, and the guide mechanism is arranged at the bottom end of the water pumping mechanism and used for guiding the water pumping mechanism to work. And the guide mechanism is used for smoothly lowering the water pumping mechanism into the well and keeping the water pumping mechanism coaxial with the well body. It is guaranteed that the water pumping mechanism is stably fixed in a well, smoothly lowered to the bottom of the well and always coaxially positioned with the well body, and the stability of extraction operation is improved.

The invention relates to the field of silica-based adhesive detection, in particular to silica-based adhesive sealing performance detection equipment and a using method thereof, and the silica-based adhesive sealing performance detection equipment comprises a base, a placing cylinder, a lengthening cylinder and the like; the base is connected with two mounting frames; each mounting rack is fixedly connected with a mounting rod; a placing cylinder is connected between the two mounting rods in a sliding manner; and a plurality of lengthening cylinders are connected between the two mounting rods in a sliding manner. According to the invention, the placing cylinder and the lengthening cylinder are matched to simulate a hole scene, silica gel cement is filled in the hole scene, flame continuously burns from the bottom, and whether the silica gel cement filled in the hole with the current depth is burnt through by the flame and loses a sealing effect or not within detection time is judged; and meanwhile, the depth of the simulated hole is changed by removing the lengthened cylinder, and the fireproof performance of the silica gel cement filled in the holes with different depths is tested, so that the optimal filling thickness of the silica gel cement in actual use is obtained, and data support is provided for the silica gel cement in actual use, so that the optimal filling thickness of the silica gel cement in different use scenes is calculated.

The invention discloses a seabed sludge sampling device for marine geological survey, the seabed sludge sampling device comprises an extension arm, the bottom of the extension arm is provided with a collection member, the collection member comprises: a connection frame installed at the bottom of the extension arm; and the sampling piece is installed on the connecting frame and used for sludge sampling treatment, and the sampling piece comprises a protective shell fixedly connected with the connecting frame. According to the seabed sludge sampling device for the marine geological survey, the extension arm, the connecting frame and the sampling piece are transferred to a sea land sludge accumulation position by an external submersible, the shell, the driving piece, the recovery piece, the multiple groups of extension pipes and the auger are driven by the hydraulic cylinder assembly to move towards the sludge accumulation end, and the multiple groups of extension pipes are inserted into sludge by a proper depth; the motor drives the multiple sets of augers to rotate through the belt wheel assembly, the two sets of driving shafts and the multiple sets of bevel gear assemblies, and the augers are rotated to guide sludge guided into the extension pipe into the recycling box through the extension pipe and the blocking piece.

The invention discloses an intermittent occlusion balloon catheter system for treating heart failure. The system comprises a five-cavity double-balloon catheter, the five-cavity double-balloon catheter comprises a cavity tube body, a first balloon arranged in a pulmonary artery and a second balloon arranged in a superior vena cava, and the first balloon and the second balloon are both fixed to the surface of the cavity tube body; a round head is arranged at the far end of the cavity tube body, and the diameter of the round head is not larger than the outer diameter of the catheter. The near end is connected with the extension tube assembly through an injection molding head; the cavity tube body is provided with five cavity channels which are respectively communicated with the first balloon extension tube, the second balloon extension tube, the thermistor extension tube, the far-end extension tube and the near-end extension tube; the injection pump is driven by the stepping motor, and the controller adjusts the advancing and retreating motion period of the stepping motor, so that the injection pump is controlled to charge and discharge liquid to the second balloon. By intermittently blocking the superior vena cava, the heart filling pressure is reduced, and therefore heart hyperemia and volume overload are prevented.

The utility model discloses a quick butt joint flange, which belongs to the technical field of flange connection and comprises a first connecting pipeline and a second connecting pipeline, a sealing assembly is arranged on the opposite sides of the first connecting pipeline and the second connecting pipeline, and the sealing assembly comprises two sealing connecting rings. The two sealing connecting rings are specifically made of materials with certain elasticity and corrosion resistance, such as rubber, preliminary sealing is provided through the sealing connecting rings, media are prevented from leaking at the joint, and the outer diameters of the two sealing connecting rings are both sleeved with sealing rings. In the actual use process, the leakage of dangerous media is effectively prevented, the risk of accidents is reduced, the safety of personnel and equipment is guaranteed, the pressure in the pipeline is kept stable, the normal operation of the system can be guaranteed, the working efficiency and the product quality are improved, corrosion and damage are reduced, and the service life of the system is prolonged. The service lives of the pipeline, the flange and related equipment are prolonged, and the maintenance and replacement cost is reduced.

The invention discloses a low-temperature screw extruder, and belongs to the technical field of nuclear fusion projectile injection. An extension pipe, an extrusion cavity and a six-way assembly are sequentially arranged in a vacuum cylinder from top to bottom, and a servo motor drives an extrusion screw to rotate through a magnetic transmission assembly; working gas enters the vacuum cylinder through the working gas ingress pipe and is condensed into liquid under the action of the liquefier; the liquid working gas automatically flows into the extrusion cavity and is solidified in the extrusion cavity; and under the action of the extrusion screw rod, the working gas is extruded out of the conical pressing nozzle in a solid ice column form. According to the invention, the hidden danger of leakage of working gases such as deuterium and tritium caused by dynamic sealing is avoided, the ice column forming quality can be improved, and the demand quantity of liquid helium is reduced.

The dust collector comprises a dust collector body, an extension pipe and a locking assembly, and the dust collector body is provided with a matching surface; the extension pipe extends in the first direction, and the extension pipe is provided with a locking seat; the locking assembly is arranged on the locking seat, the locking assembly locks the matching surface in a releasable mode, and the locking assembly comprises a locking button seat; when the locking button base is under the upward acting force in the first direction, the locking assembly and the matching face are unlocked, and the extension pipe moves upwards along the first direction along with the locking base. According to the dust collector, the matching face of the dust collector body, the locking base on the extension pipe and the locking button base in the locking assembly are matched together, the direction in which a user triggers the locking button base is kept consistent with the extension pipe dismounting direction, operation of the user is facilitated, and then the use experience of the user is improved.

The rail welding system comprises a rail welding vehicle and a rail welding machine, the rail welding vehicle is provided with a rail welding operation supply unit, the rail welding operation supply unit communicates with the rail welding machine through an extension pipeline, and the rail welding vehicle is provided with a crane; the rail welding machine further comprises a machine body support which is provided with a rail welding machine placing position. The method has the beneficial effects that a GPW-1200 type air pressure rail welding machine can be adopted to implement welding operation on a steel rail line on a ramp section with the height being 130 mm or above and the height being 25% o or below of a railway line, thermit welding is comprehensively canceled, and the method has great advantages in the aspects of improving the rail replacement overhaul construction quality and ensuring the travel safety of passengers.

The utility model discloses a hoisting clamp for long pipe transportation, and belongs to the technical field of pipeline transportation. The clamp comprises a pair of clamping arms, and each clamping arm comprises an adjusting groove and a supporting pipe bracket; the connecting rod comprises a fixing rod, the two ends of the fixing rod are hinged to the clamping arms through bolts, the connecting rod further comprises an adjusting rod, and the adjusting rod is hinged to the adjusting grooves in the two sides in a sliding mode; the adjusting screw rod is arranged between the fixed rod and the adjusting rod, and a fastener is arranged outside the adjusting screw rod in a surrounding manner; and a long pipeline. According to the hoisting clamp for long pipe transportation, the clamping arms on the two sides are connected through the connecting rods, the arm unfolding angles of the clamping arms are controlled through the adjusting screw rods, the supporting pipe bracket and the jacking bracket jointly wrap a pipeline and are locked through the fastener, the truss lifting hook penetrates through the lifting hole to conduct hoisting, the clamping arms can be accurately adjusted according to the diameter of the pipeline, it is ensured that the pipeline is attached to the supporting component, and therefore the hoisting efficiency is improved. And the supporting pipe bracket and the jacking bracket adopt cambered surface design, so that the pipeline is uniformly supported, and the service life of the pipeline is prolonged.

The invention discloses an anti-pollution sampling device for animal epidemic prevention sampling inspection, and relates to the technical field of animal sampling, the anti-pollution sampling device comprises an extension tube, a storage cover, a storage support, a hand placing hole and a third rack, the right side of the extension tube is provided with the storage cover, the storage support, the hand placing hole and a trigger, and the side surface of the storage cover is provided with a first spring and a limiting bolt; a pull wire hole is formed in the side face of the trigger, through cooperation of the storage cover, the limiting plug pin and the first spring, external pollutants are effectively prevented from entering the storage support, and cleanliness of collection equipment is guaranteed; the first protective cover and the second protective cover are automatically opened and closed before and after sampling, samples are isolated from the outside, and the samples are prevented from being polluted in the collecting and transferring processes; the sampling jacket can grab a sample, so that the sample is prevented from falling off and being polluted, the accuracy and reliability of the sample are greatly improved, and more effective data support is provided for animal epidemic prevention sampling inspection work.

The invention discloses an efficient freezing radiofrequency ablation catheter and ablation system, and belongs to the technical field of freezing ablation, the efficient freezing radiofrequency ablation catheter comprises a needle head part, a catheter part, a handle part, a water injection connector part, a catheter extension tube part and a plug assembly; the needle head part is of a metal head structure, and the near end of the needle head part is connected with the inner and outer multilayer structures of the catheter part; the catheter part is of a multi-layer flexible tube structure and is used for connecting the handle part and the needle head part; the handle part is held by a user, the near end of the handle part is connected with the catheter extension tube part and the water injection joint part, and the far end of the handle part is connected with the catheter part; the water injection joint part is used as a water quantity control water inlet; the catheter extension tube part expands the use range; the plug assembly realizes plugging and fixation of a product. The flexible ablation catheter can be widely applied to natural orifice ablation operations and has the advantages of integration of cold and hot ablation design, diversity of ablation application range, high ablation efficiency and the like.

The utility model belongs to the technical field of PE pipes, and discloses a high-strength PE pipe which comprises a PE base pipe. The inner coating is arranged on the wall of an inner cavity of the PE base pipe in a spraying mode, and the inner coating is used for reducing the friction coefficient of the inner cavity of the PE base pipe so as to reduce dirt residues; the reinforcing structure is arranged on the outer surface of the PE base pipe, and the reinforcing structure is used for improving the strength and pressure resistance of the PE pipe; the sleeve is arranged on the outer surface of the reinforcing structure; and the outer coating is sprayed on the outer surface of the sleeve. The inner coating is sprayed on the innermost layer of the PE pipe, the outer coating is sprayed on the outermost layer of the PE pipe, and the coatings have the characteristics of acid resistance, alkali resistance and resistance to various organic solvents, so that the corrosion resistance of the innermost layer and the outermost layer of the PE pipe can be effectively improved, and the friction coefficient of the coatings is extremely low, so that the service life of the PE pipe can be prolonged; and meanwhile, the innermost layer and the outermost layer of the PE pipe can be smoother, so that dirt residues are reduced.

The utility model discloses a detection device for wading trousers, which comprises a water tank and a lifting plate arranged on the water tank, an air cylinder arranged outside the water tank is connected with the lifting plate, a clamping assembly used for clamping the upper end of the wading trousers is arranged on one side of the lifting plate, an air inlet pipe with one end extending into the water tank is arranged on the lifting plate, and an extension pipe is arranged in the air inlet pipe. One end of the extension pipe extends out of the air inlet pipe and is located in the water tank, an air bag is arranged in the water tank, the air bag is consistent with the wading trousers in shape, and the overall size of the air bag is smaller than the size of the wading trousers; the outer wall of the clamping plate is provided with a guide groove connected with the triangular plate in a sliding mode, the extension pipe is provided with a ventilation valve, the ventilation valve is located above the clamping plate, in the prior art, detection is conducted after the inside of wading trousers is inflated, each piece needs to be clamped and used after being filled with air, the overall detection efficiency is low, and the efficiency of filling the inside of the wading trousers can be improved through the wading trousers detection device.

The utility model relates to the technical field of injection molding equipment, in particular to a feeding device of a plastic bottle injection molding machine. According to the technical scheme, the device comprises a tank body, a hopper, an extension pipe and a machine body, an extension plate is arranged on the machine body, the tank body is arranged on the extension plate, a pump body is arranged on the upper surface of the tank body, the tank body is communicated with the hopper through a connecting pipe, the hopper is arranged on the machine body, and the extension pipe is arranged at the lower end of the hopper. And an electric heating wire is arranged in the extension tube. Under the action of negative pressure, redundant materials in the hopper can be conveniently removed, follow-up production is facilitated, the humidity in the hopper can be effectively reduced in cooperation with the electric heating structure, and mutual bonding of plastic particles caused by the fact that the humidity in the hopper is too large is avoided.

The utility model discloses an anti-loosening device for an electromechanical installation pipeline, and relates to the technical field of pipelines. Comprising three bottom plates and mounting rods mounted on the bottom plates, each mounting rod is provided with an anti-falling assembly, each anti-falling assembly comprises a positioning mechanism and an adjusting mechanism, each positioning mechanism comprises a mounting sleeve, sliding grooves, an adjusting threaded rod and a clamping plate, the mounting sleeves are mounted on the mounting rods, and the sliding grooves are formed in the mounting sleeves and symmetrically distributed; through the cooperation of the adjusting threaded rod and the sliding block, the position of the clamping plate can be conveniently adjusted, the device can adapt to electromechanical pipelines with different pipe diameters, the universality of the device is improved, a first spring provides continuous elastic clamping force, the friction force is increased through cooperation of a rubber pad and a friction groove, the electromechanical pipelines can be effectively prevented from loosening under various working conditions, and the practicability is high. Safe and stable operation of the electromechanical system is guaranteed, the first spring can buffer vibration while playing a clamping role, damage to the pipeline caused by vibration is reduced, the service life of the pipeline is prolonged, and the maintenance cost is reduced.

The utility model discloses a device for collecting residual liquid in a casing pipe, and belongs to the technical field of offshore well drilling and workover. The device for collecting the residual liquid in the casing pipe comprises a casing pipe sealing piece, and a compressed air input device and a liquid discharging device which penetrate through the casing pipe sealing piece are arranged above the casing pipe sealing piece. And an extension pipeline is arranged below the sleeve sealing piece and is communicated with a compressed air input device. According to the utility model, the residual liquid above the cutting depth in the sleeve is collected through the liquid discharging device by using compressed air, so that the purpose of efficiently recovering the residual liquid in the sleeve can be achieved, and the influence of the residual liquid on operation is reduced. The device is suitable for recovering residual liquid in the casing pipe before the casing pipe is cut in the offshore drilling and workover operation, is particularly suitable for collecting oil-based / synthetic-based mud, and is also suitable for collecting water-based mud or other liquid.

The invention discloses multi-angle anti-corrosion paint spraying equipment for spiral steel pipe machining, and belongs to the field of paint spraying equipment. The multi-angle anti-corrosion paint spraying equipment for spiral steel pipe machining comprises a circular ring, block bodies are arranged on the two sides, close to a fixing frame, of the circular ring, the circular ring is slidably connected with the fixing frame through the block bodies, an inner cavity is formed in the circular ring, a necking pipe is fixedly connected into the inner cavity, a fixing block is fixedly connected to the inner wall of the circular ring, and a through hole is formed in the fixing block. A motor is fixedly connected to the outer side of the fixing block, a ball is rotationally connected into the through hole, the output end of the motor is fixedly connected with the ball, a middle pipe is fixedly connected to the outer side of the ball, a circular hole is formed in the outer side of the end, away from the middle pipe, of the ball, and a feeding pipe is fixedly connected to the middle of the bottom of the circular ring. By starting the motor on the outer side of the fixing block, the motor drives the ball to rotate in the through hole, and the middle pipe, the extension pipe and the spray head are driven to rotate to a preset spraying angle.

The invention discloses a pipeline structure for a detection device to enter and exit an underground long pipeline and a use method, and belongs to the field of pipeline leakage detection. The pipeline structure comprises overhaul wells arranged at the two ends of a long pipeline respectively, pipeline extension units are arranged at the two ends of the long pipeline in the overhaul wells respectively, each pipeline extension unit comprises an extension pipeline, the extension pipelines are communicated with the long pipeline and pipeline elbows, balance liquid supply holes are formed in the bottoms of the extension pipelines, and gate valves are connected to the outer sides of the extension pipelines. The outer side of the gate valve is connected with a transition pipeline, and the outer side of the transition pipeline is connected with a blind flange. An exhaust hole is formed in the top of the transition pipeline close to the gate valve, and a liquid injection hole is formed in the bottom of the transition pipeline close to the flange blind plate; and the balance liquid supply hole and the liquid injection hole are connected through a pressure-bearing hose. According to the pipeline structure, detection equipment can enter a long pipeline conveniently, excavation operation is reduced, construction interference and maintenance cost are reduced, and remarkable economic and environmental benefits are achieved.

The utility model relates to the technical field of shockproof fixing devices, and discloses a hydrogen conveying pipeline shockproof fixing device for a hydrogen energy automobile, which comprises a hydrogen pipe and a hydraulic damping rod, the outer side of the hydrogen pipe is fixedly sleeved with an I-shaped sleeve, and the left end and the right end of the hydraulic damping rod are fixedly sleeved with bearings. The hydraulic damping rods are rotationally installed in the I-shaped sleeve through bearings, a fixing piece is fixedly connected between the left end and the right end of the hydraulic damping rod on the lower side, a shock absorber is fixedly installed at the lower end of the fixing piece, and supporting arms are fixedly connected to the left ends and the right ends of the hydraulic damping rods on the front side and the rear side correspondingly. And connecting shafts are fixedly connected between the lower ends of the supporting arms. Shockproof protection is provided for the hydrogen pipe in all directions, the risks of pipeline deformation and fatigue cracks caused by vibration are greatly reduced, the service life of the pipeline is effectively prolonged, the running safety coefficient of a hydrogen energy automobile is improved, meanwhile, installation is convenient, and tedious operation of traditional bolt connection is abandoned.

The invention discloses a movable pipeline support mechanism and a battery pack module liquid cooling system, and relates to the technical field of battery pack cooling, and the movable pipeline support mechanism comprises a pipe clamp assembly which comprises a base plate and two elastic clamping plates which are arranged on the two sides of the abdomen of the base plate and are of a symmetrical structure, the two elastic clamping plates can abut against the two sides of the pipeline correspondingly and provide clamping force used for fixing the pipeline. And the support assembly comprises two oppositely-arranged insertion grooves, and the two ends of the base plate are inserted into the two oppositely-arranged insertion grooves respectively. By arranging the movable pipeline support mechanism, not only can the liquid cooling pipeline be supported, but also the pipeline can be allowed to perform axial displacement when being impacted by water flow, so that the damage to the pipeline caused by water flow impact is effectively reduced, and the service life of the pipeline is prolonged; meanwhile, through the synergistic effect of the limiting pull rod, the positioning spring piece and the reset spring piece, it is ensured that the pipeline is kept at the initial position in the static pressure state, and therefore the stability of the whole system is enhanced.

The utility model relates to the field of respiratory trainers, and particularly discloses a mouthpiece for a respiratory trainers, which comprises a connecting pipe, the right side of the connecting pipe is provided with a mouthpiece, and the front side and the rear side of the outer wall of the mouthpiece are both provided with limiting grooves. The front side and the rear side of the outer wall of the mouthpiece are each fixedly connected with two bosses located on the left side and the right side of the limiting groove, the four bosses on the left-right opposite sides of every two bosses are each provided with a plurality of grooves, the extension pipe is connected into the connecting pipe in a threaded mode, the extension pipe is located in the blocking groove, and meanwhile the extension pipe abuts against the baffle ring. Then, the mouthpiece is placed in the mouth, the upper teeth and the lower teeth are made to bite in the limiting grooves respectively, meanwhile, the two sets of bosses are located on the inner side and the outer side of the upper gum and the lower gum, then the gum parts of a user can be limited, and the effect of stable bite of the mouthpiece is achieved.

The utility model relates to a valve sealing property testing arrangement, including detection case and support platform, its technical key point is: support platform is hollow round table and is equipped with with its intercommunication lower positioning ring on the upper surface, the lower surface of support platform is equipped with the extension pipe of inserting detection case bottom liquid layer, the outer circumferential surface of support platform is equipped with lower horizontal air inlet pipeline, the side of detection case is equipped with cantilever frame, and the longitudinal cylinder is fixed in cantilever frame top plate end, and the lower end of the cylinder rod of longitudinal cylinder is fixed with upper pressure seat, and upper pressure seat is hollow seat and is equipped with with its intercommunication upper positioning ring on the lower surface, and the center line of upper positioning ring and lower positioning ring coincides, and the outer circumferential surface of upper pressure seat is equipped with upper horizontal air inlet pipeline, and upper horizontal air inlet pipeline is equipped with the longitudinal air escape pipeline that end extends to the below of detection case bottom liquid layer. The device solves the problem that the accuracy of one-way detection needs to be improved, and the sealing property detection accuracy of valve body is significantly improved through bidirectional detection structure.