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

The invention discloses a water-cooled portable air conditioner, wherein, a part for forming an outdoor unit is positioned in a rear lower half of a V-shaped shell; a part for forming an indoor unit is positioned in a front half of the V-shaped shell; a compressor and a water-cooled outdoor heat exchanger are arranged on a protruding V-shaped tip in the back of a V-shaped chassis; two indoor through-flow fans are vertically arranged in the front of two V-shaped side walls of the V-shaped chassis respectively; and a V-shaped indoor heat exchanger is vertically arranged between each indoor through-flow fan and the side of the shell as well as an outdoor unit part. In the invention, the double through-flow fans are adopted for air supply so that the air inlet direction and the air outlet direction of an evaporator are consistent, thus reducing the number of rows of the heat exchangers, reducing the system resistance at a side of the evaporator, increasing air quantity, enhancing the heat exchange effect of the evaporator, and being beneficial to improving the overall capability of the air conditioner under the condition of ensuring a heat exchange area; and in addition, an air chamber 1 and an air chamber 2 are opened and closed according to selection of a user, thus reducing energy consumption and improving the satisfaction degree of the user.

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.

The invention provides an inspection system which comprises a CT (Computed Tomography) device. The CT device comprises a slip ring, a ray source connected with the slip ring, a detection device and a conveyor, wherein the detection device corresponds to the ray source and is connected with the slip ring, and the conveyor conveys objects to be detected; the detection device comprises N rows of detectors, a preset gap is formed between adjacent two rows of detectors, and N is an integer larger than 1. The inspection system of the invention can be adopted to realize the high-speed scanning imaging of the CT device, enables the simultaneous use of the CT device and a scanning imaging device used for obtaining two-dimensional images to be possible so as to compensate for the mutual shortcomings.

The invention discloses a high-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 low-energy detector is arranged aboveeach high-energy detector; the number of rows of the low-energy detectors is larger than the number of rows of the high-energy detectors, and at least part of the high-energy detectors are distributed in a centralized mode. Part of high-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 discloses a dehumidifier. The dehumidifier comprises a shell, and further comprises a U-type heat exchanger, a fan, a volute, a middle partition plate, a compressor and a water tank which are arranged inside the shell; the middle partition plate is arranged between the U-type heat exchanger and the compressor; the fan is arranged inside the volute; the water tank is arranged below the volute; the shell is provided with an air inlet and an outlet; the U-type heat exchanger corresponds to the air inlet; the fan is arranged on the U-type inner side of the U-type heat exchanger; theair outlet direction of the fan faces the air outlet; and air is guided by the fan to enter via the U-type heat exchanger and then is blown out via the air outlet. The U-type heat exchanger of the dehumidifier is provided with three air inlet faces, so that a three-face air inlet channel is formed in the whole dehumidifier, compared with a single-face air inlet mode, the air processing area is increased, the air dehumidification efficiency is improved, noise generated during working of the dehumidifier is reduced, static pressure loss is reduced, and efficient operation of the fan can be ensured.

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 invention belongs to the technical field of cooling high-temperature components of a gas turbine, and in particular relates to a gas film hole based on a curved channel secondary flow. The air film hole includes two parts: a curved channel section and a straight channel section; wherein, the curved channel section is a circular arc formed by bending the inlet of the air film hole toward the incoming flow of the cooling airflow. The air film produces a secondary flow of the cooling airflow due to the curved channel of the air film hole. After the formed channel vortex leaves the air film hole, it bends under the lateral push of the high-temperature air flow, and has the opposite helicity to the kidney-shaped vortex. After the interaction, it can inhibit the development of the kidney-shaped vortex, weaken its strength, improve the adhesion ability of the air film to the wall, and increase the cooling efficiency of the air film. On the other hand, because of the existence of the channel vortex, the cooling air flow has a higher spanwise velocity at the outlet of the air film hole, which can increase the coverage width of the air film.

The invention discloses a large-dosage coal ash composite self-insulation building block and a preparation method thereof. The building block comprises a rectangular building block body on which multiple through holes are formed through extrusion, wherein semi-open through holes are symmetrically formed on two sides of the rectangular building block body; a thermal insulation material mixed by rice hull, silicate cement and 901 glue according to mass percentage is filled in the semi-open through holes and the multiple through holes; and the thermal insulation material is compacted, flattened, naturally cured to prepare the building block. The coal ash, coal ash ceramsite, rice hull, other industrial and agricultural wastes and light materials serve as main components, and a self-insulation function can be realized. The building block has the volume density of 676-704kg / m<3>, so that the capacity of the building block is greatly reduced, and the building deadweight and construction cost are reduced. The comprehensive dosage of the coal ash is more than 70 percent, the resources are fully utilized, and waste materials are changed into valuable materials. The building block are few in holes and rows and easy to form, and the damage rate in the processing, transport and construction process is low.

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 present invention provides an undulator, wherein the undulator includes at least: M permanent magnet periods arranged in sequence along the electron beam transmission direction, each of the permanent magnet periods includes four rows of permanent magnet structures, and each row of permanent magnets The magnet structure includes N rows of permanent magnet groups, and each row of permanent magnet groups includes K permanent magnet units, wherein M, N, and K are all natural numbers greater than or equal to 1; the permanent magnet structures of the four rows are paired and opposite It is arranged on both sides of the electron beam transmission direction, and can form at least one composite magnetic field through relative displacement, so that when the electron beam passes through the composite magnetic field, it can generate elliptically polarized light, circularly polarized light, or any polarization angle from 0° to 360° direction of linearly polarized light, and make the direction of electron velocity deviate from the axis direction of the undulator. The invention can generate not only linearly polarized light, but also elliptical and circularly polarized light, and can make the direction of electron velocity never along the axial direction of the undulator, thereby greatly reducing the thermal load of the synchrotron radiation beamline.

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.

The invention discloses a high-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 low-energy detector is arranged aboveeach high-energy detector; the number of rows of the low-energy detectors is larger than the number of rows of the high-energy detectors, and at least part of the high-energy detectors are distributed in a centralized mode. Part of high-energy detectors of the CT detector are arranged in a centralized mode, the cost is reduced, and meanwhile the imaging precision is high.

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 rail vehicle air conditioning unit using the L-shaped condenser includes a box body, and the box body includes an evaporation chamber and a condensation chamber, which are respectively used for installing the evaporation unit and the condensation unit; the condensation unit mainly includes a compressor, a throttling device, a condensation A condenser and a condensing fan, the evaporator unit mainly includes an evaporator; it is characterized in that: the condenser is an L-shaped condenser, including an L-shaped condensing fin group composed of multiple sets of L-shaped condensing fins, including mutually perpendicular Condensing fin group I and condensing fin group II, there is an arc-shaped transition fin group between condensing fin group I and condensing fin group II, and the inlet section header and outlet section header are located in the L-shaped fin One side of the vertical end of the sheet group is connected to the inlet header compressor, and the outlet header is connected to the evaporator through a throttling device; the evaporator is connected to the compressor; the railway vehicle air-conditioning unit provided by the invention adopts L type condenser, which meets the development requirements of high efficiency, light weight and small size of railway vehicle air conditioning units.

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.