46results about How to "Guaranteed cross-sectional area" patented technology

The invention discloses a porous bubbling device with a cooling structure, and belongs to the field of tank furnace melting for glass production. The bubbling device consists of a porous gas pipeline and a cooling pipeline for protecting the gas pipeline; the bubbling device can be positioned at any position in the depth direction of molten glass by cooling and can be adjusted according to different produced glass; and the cross section area of a single gas pipe outlet of a bubbling port (7) can be reduced through multiple pores, and the purposes of preventing the molten glass from flowing backward and controlling bubble frequency and bubble diameter are fulfilled by combining a one-way valve (or check valve) and a pressure adjusting valve of an upstream air supply pipeline of an air inlet (4).

The invention discloses a method for processing a rectangular round-hole wire copper pipe of a dual water internal cooling generator, which comprises the steps of: selecting a pipe blank, casting, extruding and stretching the selected pipe blank to form a circular pipe blank; rolling the formed pipe blank; annealing the rolled pipe blank; carrying out transitional stretching on the annealed pipe blank; and then, stretching the pipe blank after transitional stretching to form a finished product. The processing method solves the problems of large material consumption of a coil, large volume of a unit, poor cooling effect of the coil and finally short unit use life because the material of the coil is solid or has a rectangular inner hole adopted in the prior art. The processing method has the advantages of material saving, long service life and the like.

The invention discloses a double-hole concentric heat tube. The double-hole concentric heat tube mainly comprises an inner tube 1, an outer tube 2, positioning tenons 3 and a heat preserving layer 4. The inner tube 1 is supported by the positioning tenons 3 and fixed inside the outer tube 2, and the inner tube 1 and the outer tube 2 form a concentric circle and the single double-hole tube. The positioning tenons 3 are arranged at intervals, and every four tenons are evenly welded and distributed on the outer side of the inner tube 1 at 90 degrees. An annular channel between the inner tube 1 and the outer tube 2 forms an outer hole 6, and the outer hole 6 and an inner hole 5 jointly form the double-hole concentric heat tube and are equal in area. Compared with heat tubes paved in a double-tube paralleling mode in the prior art, the occupied width can be decreased, and a smallest net safety distance of underground pipelines is ensured. Earth volume required ditch excavation is decreased through direct burying pavement. The superficial area is smaller than that in the double-tube paralleling mode, heat energy consumption can be reduced, and energy is saved.

Disclosed is an exhaust apparatus for two-wheeled motorcycle. The space utilization of exhaust apparatus arranged under the motor can be further improved in a two-wheeled motorcycle attached with a transverse V-shape motor. At the front and rear of an oil disc (15) respectively provides a front expansion chamber (27) and a rear expansion chamber (26) which are connected with each other via connecting pipe (28). Wherein, the connecting pipe (28) is arranged at right side of the motorcycle body. In the space formed with the front expansion chamber (27) and the rear expansion chamber (26) respectively provided at front and rear and the connecting pipe (28) provided at side, the oil disc (15) can be arranged to protrude downward. Thus, the oil disc (15) volume can be sufficiently ensured, andthe space utilization of exhaust apparatus (5) can be further improved.

The present invention relates to a thin heat pipe having wicks of a crisscross structure, the thin heat pipe comprising: a housing (3) constituting a plate-shaped outer body having a thickness smaller than the length or width thereof; an operating fluid evaporated at an evaporation portion on one side of the housing (3) and then condensed at a condensation portion on the other side thereof, thereby transferring heat from the evaporation portion to the condensation portion; and wicks (5) extending in the longitudinal direction such that the operating fluid, which has been condensed at the condensation portion, returns to the evaporation portion, wherein the wicks (5) are arranged on inner peripheral surfaces of respective flat plate bodies (11) so as to crisscross each other in the transverse direction such that the flow sectional area of an operating space (S) is maintained to be constant in the transverse direction; as a result, a sufficient sectional area of an injection opening for degassing is secured, and the boiling operating fluid is prevented from being discharged in a liquid lump state, thereby enabling expectation of improving the heat pipe quality and production efficiency.

The invention provides a paste composition for a solar cell electrode. According to the invention, the intrusion amount of electrode material can be easily controlled even when electrodes are formed in n layers of thin solar cells of a shallow emitter structure with a firing holing method and high-efficiency solar cells with high FF value and less current leakage can be obtained. An illuminated surface electrode is formed by thick film silver comprising, by weight, 1-10 parts of lead glass with respect to 100 parts of silver. The lead glass contains 6-62 mole% of PbO, 1-18 mole% of B2O3, 8-49 mole% of SiO2, 0-30 mole% of A12O3, 1-30 mole% of Li2O, 1-30 mole% of TiO2, 0-30 mole% of ZnO, 0-1.0 mole% of ZrO2 and 0-6 mole% of P2O5 and thus the intrusion quantity is controlled to be 80-90nm. Therefore, even the line width is reduced to be 100 microns, favorable ohmic contact can be obtained and photoelectric conversion efficiency of the solar cells can be improved.

The present invention relates to an air-cooling type internal combustion engine and a saddled vehicle having the same. The air-cooling type internal combustion engine includes a cylinder head body (100), the cylinder head body (100) including: a plurality of cooling fins (10); a cam chamber wall (20) defining a cam chamber (109); a combustion chamber wall (30) defining a combustion chamber (110); an intake duct (40) through which air intake into the combustion chamber (110) is to occur; an exhaust duct (50) through which exhaust from the combustion chamber (110) is to occur; and a cooling air duct (60) for allowing cooling air to pass through the cam chamber wall (20) and the combustion chamber wall (30). The cylinder head body (100) is integrally molded from an aluminum alloy by die casting. The cylinder head body (100) further includes a cam chain chamber (70) for accommodating a cam chain (113). When viewed in the cylinder axis direction (D1), the exhaust duct (50) extends in such a manner that the exhaust duct (50) becomes more distant from the cam chain chamber (70) when going from the inlet side toward the outlet side, and the exhaust duct (50) is formed so that an axis (50x) of the exhaust duct (50) is linear.

The invention discloses a building steel structure, and relates to the technical field of structural engineering. The problem that the visual effect and the viewing experience of users are influenceddue to the oversize cross section of a gravity columella is solved. According to the embodiment, the building steel structure is provided and comprises a first cross beam, a second cross beam and a gravity columella, the first cross beam is located below the gravity columella, the column leg of the gravity columella is hinged to the first cross beam, the second cross beam is located on the gravitycolumella, a gap is reserved between the column head of the gravity columella and the second cross beam in the vertical direction, the height of the gap in the vertical direction is larger than the deformation quantity of the second cross beam when the second cross beam bears the maximum pressure load in the vertical direction. The building steel structure is used for construct the steel frame structure of buildings.

The present invention discloses an LED module with a temperature signal output and a detection current signal output and an application circuit thereof. The LED module at least comprises an LED substrate, an LED chip group, a current detection device and a temperature detection device. The current detection device and the chip group are connected in series and then are packaged in the LED substrate. The temperature detection device is installed on the LED substrate. The upper and lower sides of the LED substrate are provided with positive and negative electrodes, the polarity of the electrodes at the same side are the same, and the leading-out end of each electrode is provided with a conductive pad. The application circuit comprises multiple groups of LED modules and an external control conversion circuit which comprises an A/D converter, a controller MCU and a D/A converter. The output ends of the current detection device and the temperature detection device of each group of LED modules are connected to the input end of the A/D converter, and the A/D converter is connected to a D/A converter through a controller. According to the LED module and the application circuit, the series and parallel connection between the LED modules is facilitated, the replacement is convenient, the working current and temperature of a single LED module are monitored at any time according to needs, and the normal working of an LED light source is ensured.

The invention discloses an endoscopic cannula and an endoscope. The endoscopic cannula includes an endoscope tube, a forcep channel and an aspirator connecting end, wherein one end of the endoscope tube is open and the other end is closed and has good light transmittance; a forcep channel is parallel to the endoscope tube, the outer walls of the endoscope tube and the forcep channel are mutually adhered, and the forcep channel is provided with a suction opening at the same end of the closed end; the aspirator connecting end is connected with the non-two ends of the forcep channel at a certainincluded angle. The endoscope tube, the forcep channel and the aspirator connecting end are made of a flexible transparent material. The endoscope tube is used for inserting an endoscope, the endoscope includes a light source and a camera system, and the forcep channel can be connected with an external inspiratory device or a matched endoscope forcep. The endoscopic cannula can sleeve the endoscope to be used, it is easy for the suction opening to absorb the liquid in the patient's body, and the endoscope is always in the package of the endoscope tube and is not polluted. After the use, the cannula is discarded directly, thus eliminating the disinfection operation of the endoscope, improving the efficiency of the use of the endoscope and reducing the cost of the department.

The invention provides a reverse siphon type large displacement floor drain, which comprises a shell and a cover, the cover is closed above the shell to form a cavity; a siphon component is arranged in the cavity. The siphon assembly includes a water-sealing core and an inner core, the water-sealing core opens upwards and is set inside the cavity; the inner core is cylindrical with two ends open and is set inside the water-sealing core ; The upper edge of the inner core extends outwards with a folded edge, and the folded edge is in contact with the inner wall of the outer shell, and the bottom of the water sealing core is provided with a deflector, and the deflector protrudes upwards stretch. A plurality of drainage channels are formed between the water sealing core, the inner core and the outer shell, and the cross-sectional area of ​​each channel is smaller than that of the previous channel. The invention forms a plurality of drainage channels, controls the cross-sectional area ratio of two adjacent channels, and has good siphon drainage effect and large drainage volume.

The invention discloses a tunnel combined-type lining structure with a maintainable drainage passage. The structure includes an arch wall lining, the lower end of the arch wall lining is connected with a an inverted arch lining, an upper bearing arch structure is erected on the inverted arch lining, and the drainage passage is positioned between the inverted arch lining and the upper bearing archstructure; the upper bearing arch structure is filled with an upper arch padding layer, and an inspection well is formed in the upper bearing arch structure and the padding layer. The structure can solve the problem that the tunnel design in the prior art cannot achieve the capability of draining and guiding a large amount of underground water in a short time; the tunnel combined-type lining structure is reasonable in structure and high in reliability.

The invention discloses a vertical envelope feeding machine. The vertical envelope feeding machine structurally comprises a supporting column, a supporting frame, two or more fixing jaws, an electriccontrol cabinet, a repulsive structure, a base and a contactor. The fixing jaws are mounted at the upper top of the base and are uniformly distributed at equal intervals. The supporting frame is mounted on one side of the base. The electric control cabinet is arranged on the front end face of the supporting frame and movably makes contact with the supporting frame. According to the vertical envelope feeding machine, an electromagnet is arranged at the bottom of each fixing jaw, and the two horizontal ends of each electromagnet are perpendicular to the corresponding fixing jaw, so that the magnetic fields of the electromagnets on every two fixing jaws are repulsive to separating the fixing jaws, and every two fixing jaws are prevented from crossing when used for fixing a tire tread; and theelastic contact area between the contactor and a tire can be automatically adjusted by means of a roller which is arranged on a circular body and can be elastically adjusted through a spring, so thatit is guaranteed that the sectional area is enlarged, the contactor is completely attached and fixed to the tire tread, and fixing is more stable.

The invention provides a contact structure and a switch apparatus. The contact structure includes: a first contact point, a second contact point, a first contact manipulator and a second contact manipulator. The first contact manipulator includes at least two elastic sheets which are each in staggered arrangement, and one end of respective elastic sheets are in mutual fixed arrangement. The second contact point is arranged on the second contact manipulator. The first contact point is disposed on the first contact manipulator near the elastic sheet which is on one side of the second contact manipulator. The at least two elastic sheets of the first contact manipulator develop flexible deformation which make the first contact point and the second contact point to be in contact under the driving force. The switch apparatus includes at least one driver and the aforementioned contact structure. The technical solution can reduce the number of contact points of the contact structure.