61results about How to "Compression stability" patented technology

The invention discloses an embedded and check method of identification watermark, a relative system and application, wherein the embedded method comprises the calculation of digit fingerprint and the embed process of the digit fingerprint, which uses a digit fingerprint based on quantized average value to generate an identification watermark sequence, and embed the information of the watermark into an image block to generate a digit image with the identification watermark. And the check method comprises integrality check and distortion positioning, which extracts the information of the identification watermark to separate the digit fingerprint and the binary random sequence, check the data to realize the integrality check and distortion positioning. The invention has the advantages that the invention can process distortion positioning accurately on damaged compressed digit image, with high operation speed and all process in time domain, high safety for resisting impact, vector image, combine impact and test impact or the like.

The invention relates to the technical field of the oil-gas recycling and in particular to a cold-accumulated oil-gas recovery processing device. The cold-accumulated oil-gas recovery processing device comprises an oil-gas processing unit, a secondary refrigerant unit and a refrigerating unit. The oil-gas processing unit is capable of, through a precooler, firstly separating a part of water, and cooling to a low temperature and freeze-separating the water through a coiled-tube-type heat exchanger, at the same time, condensing heavy components in an oil gas as liquid in the low temperature, andseparating and extracting in a gas-liquid separator. The secondary refrigerant unit is capable of, through a heat exchanger 6, absorbing cooling capacity of a low-temperature refrigerant and storingin a low-temperature storage tank, and through the coiled-tube-type heat exchanger 4a/b, performing heat exchange with the oil gas, and providing the needed cooling capacity for oil-gas separation. The secondary refrigerant unit is capable of, through regulating a flow of a secondary refrigerant returned from a low-temperature storage tank 9 to a normal-temperature storage tank 7, regulating oil-gas processing load. The refrigerating unit is capable of generating the cooling capacity. The cooling capacity is transmitted to an oil-gas separating unit through a secondary refrigerant system. A whole technological process is simple, and easy to operate. Cold is accumulated through the secondary refrigerant to adapt fluctuation of an oil-gas discharge quantity. The cold-accumulated oil-gas recovery processing device is capable of maintaining stable operation of the device, recovering usable components, eliminating potential safety hazards, and reducing economic loss, and has a certain promotion value.

The invention provides a concrete filled steel tube roadside support system used for large-section gob-side entry retaining and a support method thereof. The system comprises Pi-type steel beams which are closely clung to a top plate, concrete filled steel tube stand columns which support the Pi-type steel beams of the top plate, elliptical ring bases which sleeve the lower parts of the concrete filled steel tube stand columns, and inclined hydraulic jacks with the elliptical ring bases acting as hinged pivots, wherein the end heads of the inclined hydraulic jacks support the Pi-type steel beams and metal meshes of the surface of the filling wall. A truss structure formed by the concrete filled steel tube stand columns has the main support effect on the top plate and controls subsidence and deformation of the top plate in cooperation with the filling wall. Moderate underframe sinking and pressure releasing can be performed by the concrete filled steel tube stand columns in the process so that stability of the concrete filled steel tube stand columns in a vertical direction can be increased, and then the hydraulic jacks, which are arranged in an inclined way with the elliptical ring bases acting as the hinged pivots, can provide relatively high acting force to support the Pi-type steel beams and the metal meshes of the surface of the filling wall.

The invention belongs to the technical field of K-TIG welding guns and discloses a magnetic control K-TIG welding gun based on water-cooled permanent magnets. The magnetic control K-TIG welding gun mainly comprises a cover body and a holding body connected to the lower portion of the cover body. The cover body and the holding body form a closed space and are fixed to the gun head of the welding gun. The radially and evenly distributed permanent magnets are arranged in the closed space, and water cooling devices are arranged around the permanent magnets. According to the magnetic control K-TIG welding gun, the permanent magnets are used for replacing electromagnets to construct a circular magnetic field to compress K-TIG welding electric arcs, thus the restraining effect and penetrability of the electric arcs can be enhanced; and meanwhile, the water cooling devices are arranged to wrap the permanent magnets so as to achieve the purposes of in-time cooling and demagnetization reduction, thus the stability of the obtained magnetic field is improved, and the electric arcs are restrained and controlled better.

Disclosed is a compression conveying mechanism for bagged spring production. The mechanism comprises a machine frame (10), a spring conveying mechanism (20), and a spring compression conveying mechanism (30). The spring compression conveying mechanism (30) comprises two baffles (31) disposed on the machine frame and conveying belts (32) wound on the outsides of the baffles (31), and the distance between the two baffles (31) is gradually decreased from one end to the other end. The spring conveying mechanism (20) conveys a spring to a position between the two baffles (31) and drives the spring to move so that the spring can be moved from the end where the distance between the two baffles (31) is large to the other end where the distance between the two baffles (31) is small. The spring is gradually compressed in the horizontal moving process along with the gradually decreased distance between the two baffles (31), and after the spring is compressed to a certain degree, the spring is disengaged from the spring conveying mechanism (20) and is conveyed by the spring compression conveying mechanism (30). By providing the spring conveying mechanism (20) and the spring compression conveying mechanism (30), compression and conveying of a spring are integrated, a structural form of a traditional bagged spring production machine is abandoned, the degree of automation is high, the structure is simple, the production efficiency is high, and compression and conveying are more stable.

A grout sealer applicator device includes a container having a chamber to receive grout sealer material, a control ferrule attached onto a mouth of the container and having an outlet port for discharging the sealer material. A valve member is attached onto the mouth of the container, and includes a nozzle having a discharge aperture for selectively discharging the sealer material. A discharge wheel is rotatably attached to the control ferrule, and includes an outer peripheral surface facing toward the outlet orifice of the outlet port of the control ferrule, for receiving the grout sealer material from the outlet port, and thus for allowing the grout sealer material to be easily applied onto ground with the discharge wheel.

The invention discloses an air conditioning compressor of a new-energy automobile. The air conditioning compressor comprises a cylinder body, steam exhaust valves, a sample cover, water jackets, steamsuction valves, a piston ring, a piston, a crankshaft connecting rod, a high-pressure steam discharge port, a water inlet, a water outlet, a low-pressure steam inlet, a spring and a fixing base, wherein the sample cover and the piston are sequentially fixed in the cylinder body from top to bottom, the steam exhaust valves and the steam suction valves are fixed to the sample cover and the piston correspondingly, the water inlet and the water outlet are connected to the water jackets on the two sides, the piston ring is arranged on the piston, the lower side of the piston is connected to the crankshaft connecting rod, the spring is arranged between the upper side of the cylinder body and the sample cover, and the fixing base is fixed to the bottom of the cylinder body. The air conditioningcompressor of the new-energy automobile has the advantages of being small in occupied area and small in mechanical wear, the cylinder cooling performance is excellent, the crankshaft connecting rod isadopted to drive the piston to do reciprocating rectilinear motion, steam can be stably compressed, the refrigeration efficiency can be higher when the air conditioning compressor is applied to the new-energy automobile.

A telescopic steering apparatus includes a steering column having an outer column and an inner column. An inner peripheral surface of the outer column has a supporting portion that supports the inner column. An inner peripheral surface of the outer column further has a shock absorbing portion at a location shifted toward one side in an axial direction from an axial end face of the inner column, a diameter of an inscribed circle of the shock absorbing portion being smaller than an outer diameter of the inner column. The outer column, including the supporting portion and the shock absorbing portion, and a movable bracket are integrally formed by an expansion forming.

The invention relates to an ultrafast diagnosis technology, in particular to a full terahertz driven electron beam manipulation and characterization system and method to solve the problems that an existing streak camera is low in time resolution, complex in structure and poor in stability. The technical scheme adopted by the invention is as follows: the full-terahertz-driven electron beam controland characterization system comprises a femtosecond laser, an ultraviolet laser pulse generation device, a first reflector, a beam splitter, a single-cycle terahertz generation device, a second reflector, a multi-cycle terahertz generation device, a camera, a vacuum chamber and a direct-current acceleration system, wherein the direct-current acceleration system is sequentially arranged in the vacuum chamber along a light path; the device comprises a perforated off-axis parabolic mirror, a terahertz electron beam control system, a terahertz deflection system and a fluorescent screen. The invention also provides a full terahertz driven electron beam manipulation and characterization method.

The invention relates to a reversing valve. The reversing valve comprises a valve body assembly, wherein an axial central hole which leftwards and rightwards extends and a valve element which is assembled into the axial center hole in a leftward and rightward guiding moving manner are arranged in the valve body assembly; a valve element passing port through which the valve element passes is formedin the left end surface, of the axial center hole, on the valve body assembly; a liquid inlet channel and a liquid outlet channel which are connected to the axial central hole and radially extend arearranged in the valve body assembly; the valve element is glidingly assembled in the axial central hole in order to control the liquid inlet channel and the liquid outlet channel to be connected anddisconnected; the liquid outlet channel and the liquid inlet channel are sequentially arranged at an interval from left to right; an axial communication hole which communicates with the liquid outletchannel is formed in the left end surface of the valve body assembly; a piston is glidingly assembled in the axial communication hole in a sealing manner; the reversing valve body further comprises avalve cap which is fixedly arranged on the left end surface of the valve body assembly in a splicing manner, and the valve element is prevented from falling off from the left through the valve cap; ab locking part for blocking the axial communication hole from the left side is arranged on the valve cover; an elastic part is arranged between the blocking part and the piston in a press fitting manner; and/ or the blocking part, the piston and the valve body assembly encircle a sealed air chamber.

The invention relates to the technical field of material compression, particularly to a high-precision material compression recycling device. The high-precision material compression recycling device comprises a base, a driving device, a material basket and a squeezing plate, wherein the material basket and the driving device are fixed to the base; the squeezing plate is arranged inside the material basket, and can linearly move along the material basket; a driving end of the driving device is connected with the squeezing plate; and the driving device can drive the squeezing plate to linearly move along the material basket through the driving end to squeeze to-be-compressed materials in the material basket. The high-precision material compression recycling device has the advantages that the structure is simple, the utilization is convenient, the material compression process is relatively stable, the compression precision is relatively high, and the material compression quality is relatively good.

The invention belongs to the field of fluid drive and control, and particularly relates to a noise reduction method for a plunger pump and a noise reduction device thereof. A filtering cavity is connected with a valve plate, the filtering cavity has a filtering function utilized to filter hydraulic oil in a plunger cavity, and after the plunger cavity is contacted with the filtering cavity, the pressure fluctuation in the plunger cavity can be reduced; oil fluid in the plunger cavity is pressurized through a pressure boost cavity, a differential pressure between the plunger cavity and a plunger pump eduction oil cavity can be reduced so as to reduce the outlet flow fluctuation of a fluid pump. A metal corrugated pipe is connected with the valve plate through damping pinholes to form an RCfilter, the metal corrugated pipe can be dismantled and has different specifications, the damping pinholes can be adjusted, and the filter range can be adjusted by changing parameters of the metal corrugated pipe and damping pinholes. According to the plunger pump working in different conditions, the parameters can be adjusted to achieve a best noise reduction effect.

The invention discloses a two-section type gradient pitch double-screw compressor rotor. The two-section type gradient pitch double-screw compressor rotor comprises a male rotor, a female rotor, male rotor journals and female rotor journals, wherein the male rotor is connected with bearings on the two sides of a compressor shell through the male rotor journals. the female rotor is connected with the bearings on the two sides of the compressor shell through the female rotor journals; and the male rotor journals are connected with a coupler through male rotor shaft heads. The first section close to the air suction side adopts the equal pitch, and a complete contact line is formed on the section, so that the problem that the working volume is reduced due to the gradient pitch is avoided, and the air volume of a compressor is ensured. The pitch of the second section of screw close to the exhaust side is gradually reduced, so that the internal compression with the changed pitch is increased in the compression process, the area of an exhaust orifice is increased, the flow loss during exhaust is reduced, the exhaust noise is reduced, and the efficiency of the compressor is improved.

The invention relates to the technical field of automobile part installment, in particular to an automobile door lock installation structure. The structure comprises a spring bolt, a base, a pressingmechanism, a first installation mechanism, a linkage mechanism, a second installation mechanism and a locking mechanism; the spring bolt comprises an outer clamping column, an inner clamping column and a fixed block; the base comprises a bottom plate, an installation column, a long column and a long cylinder; the pressing mechanism comprises a piston plate and a fixed clamping column; the fixed clamping column is of a hollow structure; the first installation mechanism comprises an installation plate, a first connecting clamping seat and a positioning ring; the linkage mechanism comprises a first rotating column, a second rotating column and a positioning clamping seat; the second installation mechanism comprises a main plate, an installation base plate and a third stud; the lower surface of the main plate is connected with the upper surface of the bottom plate; the locking mechanism comprises a fixed clamping seat and two locking columns; the two locking columns are both installed on the peripheral side face of the outer part of the outer clamping column; and four sets of sliding plates are symmetrically arranged on the peripheral side face of the outer part of the inner clamping column, and a formed groove position just has a limiting effect on a push block.

The invention discloses river channel garbage treatment equipment based on the Internet of Things technology. The river channel garbage treatment equipment comprises a river channel garbage treatment equipment body, a sealing mechanism is arranged in the river channel garbage treatment equipment body, the sealing mechanism comprises a first air pump, a sealing connecting pipe is connected to the first air pump, and a sealing bin is connected to the end, away from the first air pump, of the sealing connecting pipe; a sealing door is connected into the sealing bin, an air inlet pipe is connected to the first air pump, and an air inlet outer pipe is connected to the end, away from the first air pump, of the air inlet pipe; an air inlet filter screen is connected into the air inlet outer pipe; and a garbage filter screen is connected into the river channel garbage treatment equipment body. According to the river channel garbage treatment equipment based on the Internet of Things technology, by arranging corresponding mechanisms on the river channel garbage treatment equipment, the garbage capacity of the river channel garbage treatment equipment is greatly improved, meanwhile, the necessity of secondary cleaning on the cleaned water surface is greatly reduced, the frequency of cleaning the river channel garbage treatment equipment by cleaning personnel is reduced, the probability of virus infection is reduced, and the cleaning efficiency of river channel garbage is improved.