46results about How to "Large room for adjustment" patented technology

The invention relates to a residual heat recovery system of sewage water of a coke dry quenching boiler. The system is characterized in that a sewage water heat exchanger is additionally arranged, desalting water which is delivered to an auxiliary coal saver by a water feed pump of a deaerator is used as a cooling medium to exchange heat with the sewage water nearby, and then the heat-exchanged desalting water is delivered to the deaerator to be deaerated. The system has the advantages that the problem of quantity distribution of water entering the heat exchanger and the auxiliary coal saver is avoided, and the operation and the control are convenient; the temperature of the desalting water entering the heat exchanger is minimum, the heat exchange temperature difference is high, and the heat recovery effect is good; the temperature of air at an inlet of the coke dry quenching boiler is controlled to 115 DEG C to 135 DEG C, and the temperature of actual running is controlled to about 125 DEG C and has a space of 10 DEG C from the maximum temperature, so the adjusting capability is high; and in addition, the quantity of circulating air is higher, so the temperature of the water entering the auxiliary coal saver is raised by about 8 DEG C in comparison with the temperature of the previous arrangement, the effect on the temperature of circulating air is little, and the running parameters of a coke dry quenching groove and the boiler are controlled within the specified range.

The invention provides a cantilever beam type vibration absorber with adjustable frequency. The cantilever beam type vibration absorber comprises a base, a cantilever beam and a mass disc, the lower end of the base is fixed to vibration equipment, through holes are formed in the upper end of the base and the mass disc, internal threads are arranged in the through holes, external threads matched with the through holes are arranged on the cantilever beam, the cantilever beam is arranged in the through hole of the base and the through hole of the mass disc through the external threads, fixed nuts are arranged at the two ends of the through hole of the base and fix the position of the cantilever beam and the base, adjusting nuts are arranged at the two ends of the through hole of the mass disc and limit the relative position of the cantilever beam and the mass disc, the adjusting nuts are adjustable, that is, the relative position of the mass disc and the cantilever beam is adjustable. The vibration absorption frequency of the vibration absorber can be flexibly adjusted, and the adjustable scope is wide. Parts are easy to machine and replace. Compared with an electromagnetic type unable vibration absorber and an electrodynamic type tunable vibration absorber, the electromagnetic leakage phenomenon is avoided. The cantilever beam type vibration absorber is simple in structure, stable in work and easy to mount.

The invention provides a solution polymerized styrene-butadiene rubber (SSBR) composition, a preparation method thereof, and a vulcanized rubber thereof. The solution polymerized styrene-butadiene rubber composition comprises blended modified rubber component and solution polymerized styrene-butadiene rubber. Calculated according to the weight of solution polymerized styrene-butadiene rubber as 100 parts, the composition comprises 1-70 parts of the modified rubber component. The modified rubber component comprises uncrosslinked rubber and rubber particles with crosslinked structures, which are dispersed in the uncrosslinked rubber. The rubber particles with crosslinked structures are nitrile rubber particles with an average particle size of 50-200nm and a gel content of 60wt% or higher. The uncrosslinked rubber is styrene-butadiene rubber. A weight ratio of the rubber particles with crosslinked structures to the uncrosslinked rubber is 80:20-30:70. The wet skid performance and wear resistance of the vulcanized rubber of the solution styrene-butadiene rubber composition can both be improved; the vulcanized rubber has low rolling resistance, and can be used for preparing high-efficiency automobile tread rubber.

The invention provides an emulsion polymerized styrene-butadiene rubber composition, a preparation method thereof, and a vulcanized rubber thereof. The emulsion polymerized styrene-butadiene rubber composition comprises blended modified rubber component and emulsion polymerized styrene-butadiene rubber. Calculated according to the weight of emulsion polymerized styrene-butadiene rubber as 100 parts, the composition comprises 1-70 parts of the modified rubber component. The modified rubber component comprises uncrosslinked rubber and rubber particles with crosslinked structures, which are dispersed in the uncrosslinked rubber. The rubber particles with crosslinked structures are nitrile rubber particles with an average particle size of 50-200nm and a gel content of 60wt% or higher. The uncrosslinked rubber is styrene-butadiene rubber. A weight ratio of the rubber particles with crosslinked structures to the uncrosslinked rubber is 80:20-30:70. The rolling resistance, wet skid performance and wear resistance of the vulcanized rubber of the emulsion styrene-butadiene rubber composition can be improved. The vulcanized rubber can be used for preparing high-efficiency automobile tread rubber.

The invention relates to a multivariable interval control method for a greenhouse environment system, is mainly applied to a multivariable control system for greenhouse production and replaces a traditional point control target with an interval control target through relaxing target control precision of environment factors. The method comprises steps that 1), controller parameters are initiated, and greenhouse environment factor control target intervals are set; 2), the environment factors such as indoor humiture and CO2 concentration are acquired through a sensor; 3), the acquired environment factors are compared with those of a controlled target control interval, and control deviation can be acquired by employing a control deviation processing algorithm; and 4), feedback control is carried out by the controller according to control deviation, the larger control deviation, the stronger the control effect is, through adjustment carried out by an actuating structure, the greenhouse environment multivariable interval control target is realized. According to the method, not only can a problem of no-solution limit caused by strong coupling among the factors of the greenhouse environment be effectively solved, but also wide freedom is provided for controller economy optimization.

The invention relates to a plane layout used for replacing large planes, a preparation method thereof and an SPECT/CT (single photon emission computed tomography/computed tomography) dual-mode biological imaging system using the plane layout as a rotating platform. The plane layout comprises a central datum part and a plurality of cantilevers respectively installed on the central datum part, wherein the central datum part and the cantilevers are respectively provided with installing fitting surfaces fit with each other; a working plane is arranged in front of each cantilever; and the working planes are arranged in a same plane or are respectively arranged in a plurality of planes parallel with each other. The plane layout has extremely high precision, the end face runout of the plane layout with meter-scale radial dimension can not exceed +/-0.002mm and the plane layout has simple production cost, low cost, light weight, high reliability and strong universality, moves stably and is easy to control in start and stop. The corresponding SPECT/CT dual-mode biological imaging system has higher geometric precision, imaging precision and imaging definition.

The invention discloses a method for low-temperature catalytic ozone treatment of high-humidity organic waste gas, and belongs to the field of waste gas treatment. According to the method, firstly, high-humidity organic waste gas is dehumidified by a water absorbent, the dehumidified organic waste gas is properly heated by a heating device and then is mixed with ozone, and a degradation reaction is carried out in a catalyst bed layer, so that direct contact between a large amount of water and a catalyst is avoided, and the degradation efficiency of the organic waste gas, the stability of the catalyst are improved, and the long-term stable operation of the device is ensured; and meanwhile, the reaction tail gas with a certain temperature is used for regenerating the water absorbent, so that the heat is fully utilized, and the energy consumption is reduced.

The invention discloses a pilot production wellhead platform. The pilot production wellhead platform comprises a topside module, a plurality of platform leg pillars, and a plurality of steel pile foundations, wherein the quantity of the platform leg pillars and the quantity of the steel pile foundations are equal, the topside module comprises a main deck, a production deck and a well drilling deck which are sequentially arranged from the bottom to top; the upper ends of the platform leg pillars are connected with the main deck, the steel pile foundations penetrate through the platform leg pillars and extend out of the platform leg pillars, Christmas trees are arranged on the production deck, and the Christmas trees are connected with drill conductors; after penetrating through the main deck, thedrill conductors extend downwards continuously; a living building and a helicopter deck are arranged on the right side of the well drilling deck, and the helicopter deck is arranged at the top of the living building; a passage and a slide track used for the sliding of a drilling machine or a workover rig are reserved on the left side of the well drilling deck. According to the pilot production wellhead platform, complex oil pools with less development experience can be exploited efficiently and quickly by usingless engineering investment cost, and a relatively large adjustment scopeis provided in the process of exploiting; meanwhile, the oil field development risk of the complex oil pools can be controlled effectively, so that the pilot production wellhead platform has a wide application prospect in development of such oil fields.

The invention provides a modified rubber master batch and a preparation method thereof, an oil-extended solution-polymerized styrene-butadiene rubber composition, and a preparation method and a vulcanized rubber thereof. The modified rubber master batch comprises an uncrosslinked rubber and crosslinked-structure nitrile-butadiene rubber particles dispersed in the uncrosslinked rubber, wherein the average particle size of the nitrile-butadiene rubber particles is 50-200 nm; the gel content is 60 wt% or higher; the uncrosslinked rubber is styrene-butadiene rubber; and the weight ratio of the crosslinked nitrile-butadiene rubber particles to the uncrosslinked rubber is more than 20:80 and less than or equal to 80:20. The oil-extended solution-polymerized styrene-butadiene rubber composition comprises 100 parts by weight of modified rubber master batch and 1-70 parts by weight of oil-extended solution-polymerized styrene-butadiene rubber which are blended. The vulcanized rubber of the oil-extended solution-polymerized styrene-butadiene rubber composition has the advantages of higher slippery resistance, higher abrasion resistance and lower rolling resistance, and can be used for preparing a high-performance car tread rubber.

The invention discloses a supplementary filling treatment method for a sleeve grouting defect under a bent-pipe-shaped slurry outlet hole channel. The method comprises the steps that the projection position of a sleeve on the surface of a component is positioned, and an air exhaust hole channel is drilled in the projection position 5-10mm below a slurry outlet of the sleeve; the position of the upper surface of a grouting material in the sleeve is determined through grouting fullness detection, and a grouting hole channel is drilled in the position above the upper surface of the grouting material; the air exhaust hole channel is reamed, and an L-shaped external extension pipe is mounted; a grouting pipe is inserted into the outer wall of the sleeve through the grouting hole channel and is in butt joint with the drilling position of the wall of the sleeve; and an air exhaust pipe is inserted into a port of a vertical section of the L-shaped external extension pipe, slurry supplementary filling is started, and supplementary filling is completed. According to the supplementary filling treatment method, damage to the sleeve is small, and the supplementary filling treatment effect is excellent.

The invention relates to a low-clearance tunnel cantilever positioning device which is formed by an arch flat cantilever 1, a positioning tube 2, an inclined cantilever 3, a catenary seat 6, a positioning support 7 and a limiting positioner 8. The positioning tube 2 is fixed at the lower part of the horizontal section of the arch flat cantilever 1; the upper end of the inclined cantilever 3 is hinged to the lower part of the inner end of the positioning tube 2; the upper end of the positioning support 7 is arranged on the positioning tube 2; the limiting positioner 8 is arranged at the lower end of the positioning support 7; and the catenary seat 6 is arranged on the horizontal section of the arch flat cantilever 1. According to the invention, the inclined arm section of the arch flat cantilever is clung to the wall of a tunnel to be mounted, so that the installation and fixing point of the flat cantilever is shifted down, and thus, the cantilever is integrally close to the wall of the tunnel to the greatest degree along the horizontal direction. The low-clearance tunnel cantilever positioning device has a compact structure, saves the installation space, completely meets the requirement of a low-clearance tunnel for the small-space installation and can meet the boundary requirement whether on the straight line section or the curved section of the low-clearance tunnel.

The invention relates to a connector of an electrical appliance. The connector of the electrical appliance comprises an elastic piece body and an inner core, wherein the elastic piece body comprises an elastic piece head and an elastic piece base body, the elastic piece head and the elastic piece base body are hollow and coaxial, the elastic piece head is composed of a plurality of sector-shaped pieces which are obtained in the mode of even division through a circular ring, the inner surface of the elastic piece head is a conical surface, and radial expansion or contraction of the sector-shaped pieces on the elastic piece head can be achieved through axial displacement of the inner core in the elastic piece body. The connector of the electrical appliance has the advantages that insertion and pulling force is not needed, field installation of the electrical appliance can be achieved rapidly, conveniently, safely and firmly, manufacturing is convenient, and the service life is long.

The invention provides a modified rubber master batch and a preparation method thereof, a polybutadiene rubber composition, and a preparation method and a vulcanized rubber thereof. The modified rubber master batch comprises an uncrosslinked rubber and crosslinked-structure nitrile-butadiene rubber particles dispersed in the uncrosslinked rubber, wherein the average particle size of the nitrile-butadiene rubber particles is 50-200 nm; the gel content is 60 wt% or higher; the uncrosslinked rubber is styrene-butadiene rubber; and the weight ratio of the crosslinked nitrile-butadiene rubber particles to the uncrosslinked rubber is more than 20:80 and less than or equal to 80:20. The polybutadiene rubber composition comprises 100 parts by weight of polybutadiene rubber and 1-70 parts of modified rubber component which are blended. The vulcanized rubber of the polybutadiene rubber composition has the advantages of higher slippery resistance, obviously improved rolling resistance and favorable wear resistance, and can be used for preparing a high-performance car tread rubber.