41results about How to "Not prone to leakage" patented technology

The invention relates to a low-melting-point alloy heat interface material which has low-heat impedance characteristic and can inhibit the spill of fusion liquid phase; the material is formed by necessary indium element and part or all elements such as bismuth, tin, zinc and the like, the fusion temperature is 55-85 DEG C, and the thickness of the material is not more than 0.04mm. A radiating module adopting the material comprises a radiator, a low-melting-point alloy chaff and a ring-shaped body. The radiating module can be applied in an electronic element, the radiator is arranged above the electronic element, the low-melting-point alloy chaff is arranged on the adjoining plane between the electronic device and the radiator and is used as the thermal interface material between the electronic device and the radiator, and the ring-shaped body is arranged between the electronic device and the radiator and surrounds the low-melting-point alloy chaff.

The present invention discloses one kind of netted sandwich cloth for making large inflated toy. The netted sandwich cloth features the netted gauze layer sandwiched between two layers of PVC material. The present invention has reasonable structure and smart conception, and the netted sandwich cloth has relatively great bearing capacity and less leakage after long term use. Therefore, the large inflated toy made with the netted sandwich cloth has long service life.

The invention discloses a phase-change energy storage material filled with ardealite, a phase-change energy storage plate and a preparation method thereof, and belongs to the technical field of building materials. The phase change energy storage material comprises the following components in parts by weight: 20-75 parts of ardealite, 5-38 parts of an inorganic phase change material, 2-25 parts ofexpanded graphite, 0-1 part of citric acid, 0-3 parts of polypropylene fibers, 0.1-3 parts of a water reducing agent and 20-85 parts of water. When the phase change temperature is reached, the phase state is changed, heat storage or heat release can be achieved under the condition that the temperature is basically kept unchanged, fluctuation of the indoor temperature is reduced, and the living comfort is improved. According to the invention, the components and the ratio of the phase change energy storage material are adjusted; the ardealite-filled phase change energy storage plate is preparedby adopting a filling molding mode, so that the permeability of a phase change material can be reduced, the utilization rate of phase change heat is improved, and durability of the phase change energystorage plate is prolonged.

The invention relates to the technical field of coal mining, and discloses a supporting device of coal mining equipment and an installation method of the device. The supporting device of the coal mining equipment comprises a left base and a right base, wherein a groove is formed in the right end of the left base, the left end of the right base is located in the groove; a rack is welded to the inner bottom of the groove, and a gear is hinged to the left side of the right base; the rack is connected with the gear in a meshing mode, and a lifting platform is fixedly connected to the top of the left base; and a left supporting rod is fixedly connected to the top of the lifting platform, and a force bearing plate is fixedly connected to the top of the left supporting rod. The supporting deviceof the coal mining equipment and the installation method of the device have the advantage of avoiding the roof leakage through a first side plate, a first hydraulic rod, a second side plate and a second hydraulic rod, the first side plate and the second side plate are propped up to be level with the force bearing plate by the first hydraulic rod and the second hydraulic rod correspondingly, the transverse area of the force bearing plate can be increased, the contact surface between the force bearing plate and a coal seam is enabled to be larger, and thus the roof leakage phenomenon is not prone to occurring.

The invention relates to a puncture sleeve device for a laparoscope puncture set. The puncture sleeve device comprises a puncture sleeve body and a two-stage sealing device, the puncture sleeve body comprises a puncture sleeve seat and a sleeve, the two-stage sealing device is mounted above the puncture sleeve seat, the sleeve is mounted below the puncture sleeve seat, an air injection valve is mounted on the side wall of the puncture sleeve seat, and the air injection valve and the puncture sleeve are integrated. The two-stage sealing device comprises a first sealing component and a second sealing component, and the first sealing component is positioned above the second sealing component. The specification of the puncture sleeve of the puncture sleeve device is 10mm, the puncture sleeve is matched with the puncture set and can directly take out tissues cut in an operation, an extra puncture channel can be decreased, injury to patients is reduced, and the puncture sleeve device is convenient to use, safe and reliable.

The invention relates to a puncture cannula device of a small laparoscope puncture outfit. A sealing assembly is mounted in an inner cavity of a puncture cannula, and a channel allowing a puncture needle to penetrate is formed in the vertical center of the puncture cannula; an air injection valve is mounted on the side wall of a puncture cannula seat and integrated with the puncture cannula. The puncture cannula further comprises the puncture cannula seat and a puncture positioning guide cover, the sealing assembly can be firmly fixed in an inner cavity formed between the puncture cannula seatand the puncture positioning guide cover by a connecting mechanism between the puncture cannula seat and the puncture positioning guide cover, the sealing assembly comprises a first sealing valve, asecond sealing valve and a sealing cover, and with adoption of a multi-stage sealing device, the sealing effect is good; a limiting structure is arranged between the puncture positioning guide cover and the puncture needle and can effectively prevent the puncture needle from shaking, the air injection valve and the puncture cannula seat are integrally formed, mounting stability is high, and the probability of air or liquid leakage is low. The puncture cannula device is specially designed for the puncture outfit with specification being 5 mm, and has the advantages of being convenient to mount,good in sealing effect, safe and reliable.

The invention discloses a crystalline silicon cell piece and a preparation method thereof. The crystalline silicon cell piece comprises a substrate, a gate electrode, a welding electrode, a back electrode and an aluminum back conductive layer, wherein the gate electrode and the welding electrode are arranged on the front of the substrate, and the back electrode and the aluminum back conductive layer are arranged on the back of the substrate; a square resistance value of an area, corresponding to the welding electrode, of the front of the substrate is 20 omega / square - 60 omega / square, the aluminum back conductive layer is 1 micron - 3 microns thicker than that of the back electrode, and the gate electrode is 1 micron - 3 microns thicker than the welding electrode. The preparation method comprises the following steps of (1) diffusing PN junctions; (2) laser doping; (3) film forming; (4) silk-screen printing and (5) sintering. The crystalline silicon cell piece has the advantages of being high in tolerance for welding temperature, not prone to generate electric leakage, and good in packaging performance; the preparation method is low in cost and beneficial to industrial production, and has the advantage of higher cost performance in the field of spaceflight cells for commercial satellites.

The invention discloses a multifunctional endoscope device applied to enteroscopy. The multifunctional endoscope device mainly comprises a multifunctional catheter, an integrated control device, a lavage device, a base and a power supply, wherein the integrated control device is fixedly arranged at the left side of the base via screws; the lavage device is fixedly arranged at the right side of thebase via screws; the rightmost side of the base is connected to the power supply; the multifunctional catheter is connected to the integrated control device; the integrated control device is connected to the lavage device; an elastic plug, which is made from a medical silicone material, is free from irritation, toxicity and allergic reaction to human tissues and is quite low in body rejection; the endoscope device, which makes use of a high-definition camera system, can observe intestinal abnormity more clearly; and the device provided by the invention is convenient to use and simple in structure, and the device, when conducting lavage, can examine the intestinal abnormity, so that diseases can be effectively diagnosed with a high accuracy rate.

The present invention relates to a full micro-bubble mass transfer tower tray. The whole tower tray is composed by a micro-bubble mass transfer material. A gas phase flows upward through pores on the tower tray. The whole tower tray surface is adopted as a bubbling area for gas-liquid contact. The full micro-bubble mass transfer material is fixed on a tower tray support ring on the inner wall of the tower by adopting adhering, snapping, screwing, inlaying or a combination method of adhering, snapping, screwing and inlaying. The radial cross-sectional area of the full micro-bubble mass transfer material is 10-90% of the cross-sectional area of the whole tower. According to the present invention, the whole tower tray is composed by the micro-bubble mass transfer material, such that the gas phase can be transferred upward through the pores on the tower tray; the micro-bubble structure can provide uniform micro-bubble gas distribution so as to increase the ??contact area of the gas and the liquid layer; the tower tray is particularly suitable for the case of large liquid phase load / small gas phase load; the operation flexibility can be increased, and the production capacity of the tower tray can be improved; and the gas phase passes through the liquid layer in the form of micro-bubbles, such that the amount of the liquid carried by the gas phase can be reduced so as to reduce the distance between the column plates and reduce the height of the rectification tower.

The invention belongs to the technical field of coal mine supporting machines, and discloses a flexible supporting device for a steeply-inclined coal seam. The flexible supporting device comprises a left supporting plate, a left top plate, a right top plate, a right supporting plate, a left hydraulic cylinder, an upper hydraulic cylinder and a right hydraulic cylinder. The left supporting plate is hinged to the left top plate, the left top plate is hinged to the right top plate, the right top plate is hinged to the right supporting plate, the left supporting plate is hinged to one end of the left hydraulic cylinder, the other end of the left hydraulic cylinder is hinged to the left top plate, one end of the upper hydraulic cylinder is hinged to the left top plate, the other end of the upper hydraulic cylinder is hinged to the right top plate, one end of the right hydraulic cylinder is hinged to the right top plate 3, and the other end of the right hydraulic cylinder is hinged to the right supporting plate. According to the flexible supporting device, supporting force is stable, operation is easy and convenient, roof leakage of a supported mine tunnel does not occur easily, the supported mine tunnel is easy to transport, and safer and more reliable supporting and shielding are provided for coal mining under the condition of the steeply-inclined coal seam.

The invention relates to a diesel engine oil pump, in particular to an oil pump of a diesel engine with a single cylinder, pertaining to the field of diesel engine fittings device. The diesel engine oil pump comprises a pump cap, a pump body, a rotor shaft, an outer rotor, an inner rotor, an input and output oil cavity hole of the pump cap which is positioned on the pump cap is communicated with an input and output cavity of the pump body, an inner cavity of the pump cap input and output cavity, an input and output oil channel of the pump cap, and a sealer positioned between the pump cap and the pump body. The invention is characterized in that the input and output oil channel of the pump cap is an internally communicated and hidden-typed oil channel and the sealer adopts an O-shaped sealing ring to seal. The invention is difficult to leak, has good sealing performance, good oil-absorptive performance, short start-up time for output oil, high volume efficiency and good reliability.

The invention relates to the technical field of secondary structure construction, in particular to a secondary structure impervious leakproof construction method. The method comprises the following steps that S1, the surface of a primary structure is marked so that the area, to be connected with a secondary structure, of the primary structure can be circled, thereby forming a connecting surface mark; S2, the surface of the primary structure is damaged so that a dented connecting groove can be formed, wherein the connecting groove at least completely covers the area indicated by the connectingsurface mark; S3, a casting template is built according to secondary structure design drawings; S4, concrete slurry is prepared; S5, the concrete slurry is cast; S6, curing with the template is performed; and S7, the casting template is detached after the concrete slurry is solidified, and the secondary structure is formed. The concrete slurry comprises the following components including, by mass,100 parts of Portland cement, 300-350 parts of fine aggregate, 150-200 parts of coarse aggregate, 30-40 parts of talcum powder, 6-8 parts of a concrete expanding agent and 90-110 parts of water. Thesecondary structure impervious leakproof construction method has the effect that leakage is not prone to occurring in the position where the primary structure is connected with the secondary structure.

The invention discloses a method for integrating a polyurethane film on a PDMS-based microfluidic structure, which comprises the following steps: (1) taking the PDMS-based microfluidic structure, cleaning, blow drying for standby; (2) uniformly spin-coating a silicon wafer with a polyurethane dispersion, heating and solidifying to form a polyurethane elastic film; (3) performing oxygen plasma treatment on the microfluidic structure and the polyurethane elastic film treated in the steps (1) and (2); (4) aligning the plasma-treated microfluidic structure in the step (3) with the bonding surfaceof the polyurethane elastic film quickly, applying pressure and heating to integrate the polyurethane elastic film on the surface of the microfluidic structure. Compared with the prior art, the product of the invention has good airtightness, can be used for manufacturing a pneumatic membrane valve, can improve performance, and is worth popularizing.

A stamping machine is characterized in that a pair of supporting rails is arranged at the upper part of a bottom plate of a housing, wherein chutes are formed in the upper end surfaces of the supporting rails, and two stamping mechanisms are arranged in the chutes; an inclined supporting plate is arranged at one side, at a paper feeding port, of the bottom plate of the machine housing; each stamping mechanism comprises a supporting frame, a vertical lifting column, a supporting arm, a connecting rod and an electric pushing rod; a first rotating shaft, a second rotating shaft and a third rotating shaft are correspondingly arranged between the bottom parts of the supporting rails; two ends of the first rotating shaft, the second rotating shaft and the third rotating shaft are rotatably connected between the supporting rails; the first rotating shaft and the second rotating shaft are fixedly sleeved with a plurality of paper guide rollers A; two paper pressing racks fixedly sleeve the third rotating shaft; two fourth rotating shafts are connected to the paper feeding ends between the bottom parts of the supporting rails; the fourth rotating shafts fixedly sleeve paper guide rollers B; a pair of paper guide rollers C is arranged at the upper end of the inclined supporting plate; and a pair of paper limiting plates A is oppositely mounted at two sides of the inclined supporting plate. The stamping machine is high in working efficiency; and moreover, the workload of operators can be decreased.

A stamping machine, a pair of support rails are arranged on the top of the bottom plate of the machine casing; a chute is arranged on the upper end surface of the support rail, and two stamping mechanisms are arranged in the chute; One side is provided with an inclined support plate; the seal mechanism includes a support frame, a lifting column, a support arm, a connecting rod and an electric push rod; the first, second and third rotating shafts are respectively provided between the bottoms of a pair of support rails; 1. Both ends of the second and third rotating shafts can be rotatably connected between a pair of support rails, and a plurality of paper guide rollers A are fixedly fitted on the first and second rotating shafts; Two paper press frames; two fourth shafts are connected between the bottoms of a pair of support rails at the paper feed end, and the inner end of the fourth shaft is fixedly fitted with a paper guide roller B; the upper end of the inclined support plate is provided with a pair of guides A paper roller C; a pair of paper limiting plates A are installed oppositely on both sides of the inclined support plate. The stamping machine has high operating efficiency and can reduce the labor load of operators.

The invention relates to the technical field of building construction, and provides a stone floor pavement method for the problem that the position is hard to adjust after stone floor pavement. The method comprises the following steps that firstly, a base layer is cleaned; secondly, pavement of a cement mortar screeding layer is conducted; thirdly, the stone floor pavement position is determined and marked; fourthly, the stone floor surface is cleaned; fifthly, stone floor pavement is conducted, and rubber strips are placed at the edge positions of stone floors during stone floor pavement; sixthly, the stone floors are adjusted to the proper positions; and seventhly, glue injection is conducted, and after a gluing agent is completely dried, stone floor pavement is finished. All the stone floors are laid on the cement mortar screeding layer, then the gluing agent is injected into gaps between the stone floors so that the positions of the stone floors can be finely adjusted before glue injection, accordingly, the stone floor pavement position accuracy can be better improved, the integral attractiveness of the floors can be better improved, and the situation of seepage of the floors is not likely to happen.

The invention discloses a device and method for preventing missing package of armoring exclusively used in middle and low voltage cables. The device for preventing missing package of armoring exclusively used in the middle and low voltage cables comprises a penetration die; the diameter of the cable passing die is 70 to 80mm; the cable passing die comprises a first die and a second die, which are buckled each other; the inside of the first die and the second die are arranged symmetrically with cable inlet grooves; the length of the cable inlet groove is 50 to 60mm; the cable inlet groove is a cone type, and the cone angle (alpha) is 27 degrees; a diameter bearing groove is smoothly connected with the end of the cable inlet groove; the length of the diameter bearing groove is 100mm, and the diameter of the diameter bearing groove is 10 to 18mm; the front end of the cable passing die is a cone, and the length of the cone is 50mm; the cone angle (beta) at the front of the cable passing die is 21 degrees. By means of the cable passing die exclusively used in the middle and low voltage cables and the application method, the leakage of steel strip is not easy to appear when the medium and low voltage cables are armored, therefore, the defective rate of cable armoring is reduced, and the production efficiency of armored cables is improved.

The invention discloses a socket type carbon steel stop valve which comprises a valve body, a valve flap, a valve rod and a valve cover. The socket type carbon steel stop valve is characterized in that the valve is in socket connection with a pipeline device. By virtue of the socket type carbon steel stop valve, the phenomenon that stop valves designed and produced in the current society are universally connected through flanges and are liable to leak during long-term use can be solved. The socket type stop valve is widely applicable to the field of flow control of pipeline devices of liquid and gas.

The invention relates to a microscopic bubble combined trapezoid spray tray and a connection method of a valve body and a tray. The microscopic bubble combined trapezoid spray tray is mainly composed of a tray, a microscopic bubble mass transfer valve body and a valve port, wherein the microscopic bubble mass transfer valve body completely covers the valve port on the tray, and the cross section area of the microscopic bubble mass transfer valve body is more than or equal to the area of the valve pore; if the upper surface of the valve body is higher than the upper surface of the tray, the height difference between the upper surface of the valve body and the upper surface of the tray is less than or equal to the height of the valve body; if the upper surface of the valve body is lower than the upper surface of the tray, the height difference between the upper surface of the tray and the upper surface of the valve body is less than or equal to the thickness of the tray. Because the valve body and the tray are tightly mated, gaseous phase is upwards transferred by a pore on the valve body, the microscopic bubble structure is changed to provide even microscopic bubble gas distribution, increase contact surface between gas and a liquid layer and increase mass transfer efficiency. Because the microscopic bubbles are vertically upward, mutual injection does not occur so as to improve the situation that the traditional tray does not improve aperture ratio while preventing leakage; meanwhile, the operation elasticity can be simultaneously improved, and the tray production capability is improved.

The invention relates to the technical field of exploitation of rod-pumped wells in an oil field, in particular to a pumping unit wellhead oil collecting system and a using method. By giving full playto the structural function of a single-flow check valve, through cooperation with two pressure gauges separately installed at an inlet and an outlet of the single-flow check valve and through cooperation of a sampling valve installed at the inlet of the single-flow check valve, the pumping unit wellhead oil collecting system can realize the following functions after installation: 1, liquid is prevented from flowing backward to a wellbore; 2, produced liquid is prevented from flowing back, and the recovery factor is improved; 3, the pressure gauges installed at the inlet and the outlet of thesingle-flow check valve can compare the pressure difference in real time, the inlet pressure is slightly higher than the outlet pressure in a normal liquid producing well, the inlet pressure is lowerthan the outlet pressure in a well not producing liquid, and on-site inspection personnel can intuitively judge the liquid output of the well without building the pressure; and 4, the sampling valve is installed at the inlet of the single-flow check valve, direct sampling can be achieved without closing a back pressure gate, the operation risks of false samples and pressure building are eliminated, and meanwhile, production of ground crude oil is reduced.

The invention discloses a semiconductor structure and a forming method thereof. The method comprises the following steps that: a substrate is provided; a plurality of mutually separated main fin parts and dummy fin parts are formed on the substrate, each dummy fin part comprises a first region and a second region located on the first region, the material of the second region is different from the material of the main fin parts, and the material of the second region is different from the material of the first region; an isolation layer is formed on the substrate, wherein the isolation layer covers a part of the side wall of each main fin portion and the side wall of each first region; and etching is performed to remove the second regions after the isolation layer is formed. The main fin parts and the dummy fin parts which are separated from each other are formed, the consistency of an etching environment in the etching process is ensured, and the size of the bottom of each formed main fin part is prevented from being increased due to the change of the etching environment; and in addition, through etching selectivity of different materials by an etching process, part of the pseudo fin parts are removed, defects caused by a photoetching patterning process are avoided, and the performance of the finally formed semiconductor structure is improved.