32results about How to "Reduce the number of rows" patented technology

The invention relates to a steel bar evading structure for beam column nodes, relating to the field of building design. According to the steel bar evading structure, the problem that reinforcing ribsstretching into the node are collided when precast beams are mounted in an assembling building is solved. The steel bar evading structure comprises a node site and precast beams, wherein a row of longitudinal ribs are arranged in each precast beam along the length direction of the precast beam. The steel bar evading structure is characterized in that the longitudinal ribs include first longitudinal ribs and second longitudinal ribs, wherein the first longitudinal ribs stretch out of the precast beams and are provided with horizontal bending parts in the front, first reinforcing ribs parallel with the first longitudinal ribs are connected to the front ends of the horizontal bending parts, second longitudinal ribs stretch out of the precast beams and are provided with upward vertical bendingparts in the front, second reinforcing ribs parallel with the second longitudinal ribs are connected to the front ends of the vertical bending parts, and the first reinforcing ribs and the second reinforcing ribs are alternately distributed. According to the steel bar evading structure, the bridging manner of steel ribs in existing beam column nodes is improved, so that the collision among the reinforcing ribs can be effectively avoided, and meanwhile, the stabilization of the production of prefabricated components is improved.

The present invention discloses a shell-and-tube heat exchanger with shell-side multi-channel parallel-flow inlet and outlet structure. It includes lower head, shell body, shell-side outlet, tube-side inlet, upper head, upper tube plate, heat-transferring tube bank, shell-side inlet, lower tube plate and tube-side outlet, and also includes shell-side inlet slot, inlet baffle plate, shell-side outlet slot, outlet baffle plate and longitudinal baffle plate.

The invention relates to a test stand (2) for a turbine (4), comprising: an installation area (16) for the turbine (4); an active system (38) for attenuating the noise emissions generated by the turbine (4) (40). The active system (38) includes an attenuation area (42) with a device (44) such as a loudspeaker; a first microphone (48) placed downstream of the turbine (4); and a second microphone (50) placed at the attenuation Downstream of area (42). A system (38) reduces turbine waves (40) based on measurements from the first microphone (48) and from the second microphone (50). The invention also proposes a method for attenuating the noise emissions from a turbine (4) tested in a test bench (2).

The invention discloses a low-energy sparse CT (computed tomography) detector, a CT detection system and a detection method, belongs to the technical field of CT detection, and solves the problems that a CT detection device in the prior art is high in cost, not beneficial to popularization and application of equipment, low in cost, incapable of ensuring imaging precision and the like. The CT detector comprises high-energy detectors and low-energy detectors, the high-energy detectors and the low-energy detectors are arranged in a back-to-back mode, and one high-energy detector is arranged beloweach low-energy detector; the number of rows of the high-energy detectors is larger than the number of rows of the low-energy detectors, and at least part of the low-energy detectors are distributedin a centralized mode. Part of low-energy detectors of the CT detector are arranged in a centralized mode, the cost is reduced, and meanwhile the imaging precision is high.

The invention relates to a discharge mechanism used for a large-scale pretreatment device for municipal solid wastes, and a waste pretreatment device. The discharge mechanism comprises more than two swing components positioned at the inner lower part of a fermentation raw material cavity, wherein the waste materials in the fermentation raw material cavity are stacked above the swing components. Each swing component comprises a swing body, a swing driving component and a plurality of digging claws which are arranged on the swing body and are used for breaking the self stacking support of the waste materials, wherein the swing driving component drives the swing body to drive the digging claws to swing. The waste pretreatment device comprises an upright barrel body, and an air pumping component, an automatic temperature control component and the discharge mechanism which are matched with the upright barrel body, wherein the discharge mechanism is positioned at the discharge end of the upright barrel body. The discharge mechanism has the advantages of simple and compact structure, low cost, simplicity in operation, low operating cost, good reliability and the like.

A heat recovery device, comprising a supercooling coil pipe (1) and an overheating coil pipe (2), the supercooling coil pipe (1) and the overheating coil pipe (2) being connected by means of a connecting pipe (3), the position of the overheating coil pipe (2) being higher than the position of the supercooling coil pipe (1), and the heat recovery device being filled with refrigerant. When the heat recovery device is combined with a heat exchanger (4) of an air conditioning apparatus, the heat of high temperature fresh air converts liquid refrigerant in the supercooling coil pipe (1) into gaseous refrigerant, and the gaseous refrigerant flows via the connecting pipe (3) into the overheating coil pipe (2) that is positioned relatively higher; low temperature fresh air exiting the heat exchanger (4) can re-convert the gaseous refrigerant in the overheating coil pipe (2) into liquid refrigerant, and the liquid refrigerant flows under the action of gravity via the connecting pipe (3) into the supercooling coil pipe (1) that is positioned relatively lower; this manner of circulation can automatically implement recovery of heat or cold.

The invention provides an examining system, wherein the system comprises a CT (computed tomography) device which comprises a slip ring, a ray source connected to the slip ring, a detecting device opposite to the ray source and connected to the slip ring, and a transmitting device for transmitting examined objects; when the examined objects are progressed and approached to the plane at which the slip ring is positioned, the examined objects are slowed down for progressing at a low speed, and are accelerated for progressing at a high speed after the ray sources stops emitting rays, wherein the detecting device comprises N lines of detectors; a predetermined interval is reserved between two adjacent lines of detectors; N is an integer greater than one. By utilizing the examining system provided by the invention, the high-speed scan imaging of the CT device is realized, and the CT device and a scan imaging device for obtaining two-dimensional images are possibly used synchronously, so that the defects between the CT device and the scan imaging device are overcome.