30results about How to "Guaranteed compression ratio" patented technology

The embodiment of the invention discloses a refrigeration control method and device and an air conditioner and relates to the technical field of temperature control. It can be guaranteed that on the basis of reliability of the air conditioner, low-temperature refrigeration of the air conditioner is achieved. According to the specific scheme, the current value of the outdoor environment temperature is acquired, when the current value of the outdoor environment temperature is higher than a first preset temperature and lower than a second preset temperature, a compressor of the air conditioner is controlled to run under the frequency within a first running frequency interval, and an outdoor unit fan of the air conditioner is controlled to run at a rotating speed within a first rotating speed interval; and the frequency lower limit value of the first running frequency interval and the rotating speed upper limit value of the first rotating speed interval are running frequency of the compressor and the rotating speed of the outdoor unit fan respectively when the air conditioner performs refrigeration at the first preset temperature and the compression ratio of the compressor is at least the recommended compression ratio. The refrigeration control method and device are used in the temperature adjusting process of the air conditioner.

The invention relates to a pipe mold manufacturing process adopting a continuous-casting blank to forge and roll a rough blank periodically, belonging to the technical field of pipe mold manufacture. The manufacturing process comprises the process steps of: smelting of the continuous casting blank in a blast furnace, reinspecting, blanking, heating in a ring-shaped furnace, mannesmann piercing, periodically rolling a pipe, straightening, detecting flaws with magnetic powder, cutting the head and the tail, roughly processing, boring, carrying out ultrasonic flaw detection, thermally treating, sampling and reinspecting, finish processing, carrying out surface strengthening treatment, inspecting, spraying and printing, weighing and warehousing. The pipe mold manufacturing process has the advantages that the continuous casting blank replaces the mold casting blank adopted by the existing process, the characteristics that the yield is high, the cost is low, the energy consumption is less, the structure property is stable and the like are fully exerted, and the cost is reduced in the two aspects of the process and raw materials; in addition, the forging and rolling of a Pilger type rolling machine and the structure characteristics of a classic T-shaped pipe mold are effectively combined, the condition that the pipe mold blank forged and rolled by the process periodically has the performance close to the forged blank of the traditional pipe mold is guaranteed, and the Pilger head which needs to be cut in rolling is fully utilized simultaneously, so that the production efficiency is improved greatly.

The invention provides a system and a method for hardware LZ77 compression implementation. The method comprises the following steps: step 1 caching data to be compressed, step 2 extracting the data to be compressed by means of ping pong operation, and alternately using a Hash table and a dictionary chain table for compressed encoding, step 3 splicing-processing non-fixed-length data after compressed encoding, and step 4 caching the compressed data and the spliced-processed data. According to the system and the method, Field Programmable Gata Array (FPGA) is adopted to realize the LZ77 compression function. By means of a data writing caching module and a data written-out caching module, the ping pong writing and ping pong reading function of data is realized. By means of a dictionary module, alternate update and use of the dictionary are realized so that an LZ77 compression algorithm module reaches the highest efficiency. Besides, by means of the parallel operation of the compression algorithm module and a non-fixed-length splicing-processing module, processing efficiency of the existing LZ77 compression algorithm is improved.

The invention which belongs to the technical field of steel concretely discloses an extra thick quenched and tempered steel plate for an ocean platform tooth bar and a production method thereof. The extra thick quenched and tempered steel plate for the ocean platform tooth bar comprises the following components, by weight, 0.14-0.18% of C, 0.15-0.35% of Si, 0.95-1.30% of Mn, equal to or less than0.015% of P, equal to or less than 0.005% of S, 2.35-2.55% of Ni, 0.35-0.55% of Cr, 0.40-0.60% of Mo, 0.020-0.050% of Nb, 0.010-0.030% of Ti, 0.020-0.045% of total Al, and the balance Fe and inevitable impurities, and the thickness of the steel plate reaches 177.8mm. The extra thick quenched and tempered steel plate for the ocean platform tooth bar, which is prepared through carrying out steps ofsmelting by an electric furnace, steel ingot casting by a die, TMCP rolling, fully enclosed quenching and tempering by a well type heating furnace, and the like, has the advantages of high yield strength, good elongation, excellent Z-directional performance, good low temperature impact toughness, good layered tearing resistance, and low production cost.

The invention discloses a beverage bottle recycling device. The beverage bottle recycling device comprises a device body, a bottle inlet, a gasket plate, a repairing door, a recycling bin door, locking heads, a material conveying mechanism, a compressing mechanism and a storing mechanism. The bottle inlet is formed in the right side of the device body, the gasket plate is arranged on the lower part of the bottle inlet, the repairing door is arranged on the outer side wall of the device body, the recycling bin door is arranged on the lower part of the repairing door, the locking heads are arranged on the repairing door and the recycling bin door, and the device body is internally and successively provided with the material conveying mechanism, the compressing mechanism and the storing mechanism from top to bottom. Compared with the prior art, the beverage bottle recycling device has the advantages that the structure is simple, design is reasonable, fast recycling, compressing and storing of plastic beverage bottles can be realized, the collecting efficiency is improved, and the collecting cost is reduced.

The invention discloses an ejector with the area ratio automatically adjusted along with evaporation temperature. The ejector comprises a vapor chamber, an adjustment chamber and a thermal bulb, wherein a working fluid nozzle is arranged on a gas outlet of the vapor chamber, and a coaxially arranged adjusting cone is arranged in the working fluid nozzle; an adjusting piece is arranged in the adjustment chamber; an inner cavity of the thermal bulb is communicated with a driving chamber, and the thermal bulb is used for sensing the temperature of ejected fluid, converting the temperature into a pressure signal and outputting the pressure signal; according to the pressure signal of the thermal bulb, the adjusting cone is adjusted by the adjusting piece in real time to axially move, and thus the flow area of the working fluid nozzle can be adjusted. The invention further discloses a refrigerating machine with the ejector. The ejector breaks through constraints of a traditional thought, through changes of the position of the adjusting cone in the axial direction of the working fluid nozzle caused by deformation of a membrane along the evaporation temperature under the combined action of the pressure of an outlet of an evaporator, the pressure of the thermal bulb and a spring, the flow area of the working fluid nozzle is changed, the area ratio of the ejector is changed, and thus the ejector can work with the optimum size.

The invention provides a near-lossless real-time compression method for a satellite-borne hyper-spectral interference fringe image. The method obtains the correlative characteristic of the interference fringe image by a spectral decorrelation and entropy coding method; according to the correlative characteristic of the image, the spectral decorrelation treatment is carried out on the interference fringe with a large optical path difference so as to obtain the spectral decorrelation treatment difference image; subsequently, according to the data distribution probability of the difference image, a quantization coding list suitable for the image is designed so as to carry out the lossless quantization on the value with the appearance probability more than or equal to 60% and carry out loss non-uniform quantization on the value with the appearance probability less than 60%; and finally a DPCM compression with a low compression ratio is adopted. The method has the advantages that the compressed and decompressed interference fringe image has small distortion, the compression and decompression treatment speed is quick and the real-time performance is good.

The invention discloses a micro-titanium alloying Q355B medium-thickness steel plate and a low-cost production method therefor, and belongs to the technical field of ferrous metallurgy. The steel plate comprises the following chemical components in percentage by mass: 0.15-0.18% of C, less than or equal to 0.24% of Si, less than or equal to 1.60% of Mn, 0.020-0.045% of Al, 0.020-0.040% of Ti, lessthan or equal to 0.10% of Cr, less than or equal to 0.025% of P, less than or equal to 0.008% of S, less than or equal to 0.080% of N, and the balance of iron and inevitable impurity elements. In order to solve the technical problem that in the prior art, the continuous production rhythm can be affected due to the fact that a blank needs to be kept warm in the rolling process of a 30-40 mm medium-thickness Q355B steel plate, the micro-titanium alloying Q355B medium-thickness steel plate has the advantages that precious elements such as V, Nb and Cu are not added, controlled rolling is not needed, and the production rhythm can be greatly improved.

The invention discloses a production method of an ultra-thick low-alloy steel plate. The process route adopted in the production method comprises smelting with a converter, LF refining, vacuum refining, mold casting, heating, rolling, slow cooling, heat treatment and shape correction. The ultra-thick low-alloy steel plate comprises the following chemical components in percentage by weight: 0.12-0.18% of C, 0.20-0.50% of Si, 1.30-1.60% of Mn, P of which the percentage is smaller than or equal to 0.015%, S of which the percentage is smaller than or equal to 0.005%, Als of which the percentage is smaller than or equal to 0.020-0.050%, 0.02-0.04% of Nb, 0.02-0.05% of V, 0.01-0.02% of Ti, and the balance being Fe and residual elements. According to the production method disclosed by the invention, a large-section cast ingot is adopted; in the aspect of component selection, a low-cost chemical component design only employing alloys of Nb, V and Ti is adopted; through an LF technology and a VD technology, the cleanliness of the steel plate is guaranteed; through controlled rolling and normalizing treatment, the grain size of steel can reach above 7.0 grade. The produced ultra-thick low-alloy steel plate has the characteristics that the thickness is 250mm; the crack detection property, the mechanical property and the plate shape can be guaranteed; the yield strength margin is 20-40Mpa; the tensile strength margin is 20-30Mpa; the elongation rate margin is 6%-9%; the impact resistance is uniform; the produced steel plate is particularly suitable for bases of wind driven generators.

The invention discloses a novel side-mounted pressing vehicle. The novel side-mounted pressing vehicle comprises a second-class chassis and a transfer box. A garbage feeding port is arranged at the top end of the transfer box. A cover plate used for sealing the garbage feeding port is rotatably arranged on the transfer box. A garbage dividing device is mounted on one side, facing the interior of the transfer box, of the cover plate. A barrel lifting device is mounted on the outer side wall of the transfer box and on one side of the garbage feeding port. A rotating driving device used for driving the cover plate to be opened and closed is mounted on the transfer box and also serves as a barrel lifting power device of the barrel lifting device. A garbage pressing mechanism is mounted in thetransfer box and below the garbage feeding port. Compared with a traditional rear-mounted pressing vehicle, the side-mounted pressing vehicle is characterized in that the bucket lifting device is located on one side of a vehicle body while the pressing ratio and the garbage truck processing efficiency are guaranteed, the right side is preferred when driving on the right side is mentioned in a traffic rule, parking on the right side is okay during collection work, the convenience is improved, the operation efficiency is higher, and the production cost of the whole vehicle is relatively lower.

The invention discloses a high and low temperature combined cycle engine comprising a fuel tank, an oxidant tank, a first heat exchanger, a liquid carbon dioxide tank, a second heat exchanger, a thirdheat exchanger, a first cylinder and a second cylinder. A first piston is installed in the first cylinder. A second piston and a sparking plug are installed in the second cylinder. A gas inlet is fixedly connected to the top end of the first cylinder. A second gas inlet is fixedly connected to the top end of the second cylinder. A second cryogenic pump and a first cryogenic pump are connected tothe output ends of the fuel tank and the oxidant tank correspondingly. According to the high and low temperature combined cycle engine, liquid oxygen is adopted as an oxidant to replace air, burning components are simple, burning is more sufficient, zero emission can be achieved, the high and low temperature combined cycle engine can work in an environment without air, higher pressure and temperature are generated after burning, and engine efficiency is improved. Meanwhile, emission of nitrogen oxide, carbon monoxide and other harmful gases is reduced.

The invention provides an energy-saving process for an acetylenic ketone reaction device. Pressurized rectification and normal-pressure rectification are sequentially carried out on an output material flow of an acetylenic ketone reactor so as to remove acetylene and ammonia in a reaction product, and low-pressure ammonia gas (100-2000 Pa) generated by a normal-pressure rectifying tower is drained by utilizing high-pressure ammonia gas (1.2-1.5 MPaG) extracted from a side line of a pressurized rectifying tower, so after ammonia gas generated by rectification of the normal-pressure rectifying tower is input into the first-stage pressure raiser, the gas pressure is increased; and then mixed ammonia gas output by the first-stage pressure raiser is used for guiding low-pressure acetylene, so that the pressure of acetylene and ammonia mixed gas output by the second-stage pressure raiser is increased to a relatively high degree, the inlet pressure of the compressor is increased, and the compression ratio of the compressor is greatly reduced. Specifically, the compression ratio is reduced from 30 to 6-8, energy is saved by 55% compared with that of a pressurized rectification process, and energy is saved by more than 80% compared with that of flash evaporation.