84results about How to "Change space" patented technology

This invention discloses a hospital information system including HIS, PACS and LIS, in which, all the systems are connected by exchanges to realize information transmission and exchange.

The present invention relates to a nitrogen heterocyclic carbene rare earth complex, a catalyst system which consists of the present invention, aluminum alkyl and an organoboron salt can catalyse the isoprene to carry out the solution polymerization, so as to prepare the polyisoprene with the crystallization property, high 3, 4-structure and high glass transition temperature (Tg). The molar ratio of aluminum alkyl and the rare earth complex is within the scope of 1 to 100, the molar ratio of the organoboron salt and the rare earth complex is within the scope of 0.5 to 2.0; the solvent which is used for polymerization can be toluene, bromobenzene, n-hexane, dichloromethane or chlorobenzene; the polymerization temperature range is -20 DEG C to 80 DEG C, the reaction time of polymerization at minus 20 DEG C is 36 hours, the reaction time of polymerization at 80 DEG C is 1 hour, and the monomer conversion rate can be up to 100 percent. The reaction is characterized by active polymerization, the molecular weight of the product can be controlled by the molar ratio of the monomer and the catalyst, the molecular weight of the polyisoprene can achieve 360,000 at most, and the glass transition temperature Tg is equal to 5 DEG C to 50 DEG C. The content of the 3, 4 structure of the polyisoprene is affected by the spatial effect and the electronic effect of the rare earth complex, the solvent type for polymerization reaction and the polymerization reaction temperature and so on, which is changed between 76 percent and 99 percent.

The invention provides a metadata management method based on DBMS and a metadata server. The metadata server is provided with DBMS for building and saving the metadata database of a mass storage system; five two-dimensional tables are built for storing metadata; after analysis, a metadata request is converted into a group of SQL statement which operates the metadata database so as to build the novel metadata database server for the mass storage system. The invention analyzes time and space consumption needed by performing typical metadata operation, manages the flexibility of metadata, verifies that the invention can reduce time and space consumption needed by managing metadata in the mass storage system, and improves the flexibility of managing the metadata.

The invention discloses a storage rack for auto parts, belonging to the field of storage of auto production parts. The storage rack comprises an outer frame, inner frame boards arranged in the outer frame and a top frame arranged on the top end of the outer frame, wherein L-shaped reinforcing plates are obliquely arranged on vertical frames of the outer frame; multiple fixing pin holes are formed in the vertical frames of the outer frame; the inner frame boards are fixedly arranged on the vertical frames of the outer frame through fixing pins; screw holes are uniformly distributed in the frame board of the top frame; cylindrical partition posts are arranged in the screw holes; only the ends, which are arranged in the screw holes, of the partition posts are provided with screw threads; and the partition posts are fastened through bolts. The storage rack has the advantages that the inner frame boards can be moved to different positions to be fixedly arranged; the spaces for storing the parts can be changed, so that the storage rack is suitable for storing the parts of different sizes; and the space on the top end of the storage rack for the parts is fully utilized due to the arrangement of the partition posts, so that the utilization rate of the storage rack for the parts is improved, and the situation that excessive production field is occupied is avoided.

The invention discloses a hydro-viscous drive test device with the friction plate number and oil film thickness controllable. The hydro-viscous drive test device comprises an upper box, a lower box, a driven disk, a driving disk, a driving friction plate and a driven friction plate. The hydro-viscous drive test device is characterized in that a supporting disk is added among the driving disk, the driving friction plate and the driven friction plate, four bolts are circumferentially welded on the supporting disk at equal intervals and locked by four lock nuts, meanwhile, gaskets with different thickness can be added between the supporting disk and the driving disk to change the clutch mounting space in a clutch, the friction plate group number is controllable, the four bolts are controlled to move horizontally, and the size of an oil film is controlled by changing the space in the clutch. The device is applicable to test research on the hydro-viscous drive technology and is simple in structure and good in sealing performance.

The invention relates to asymmetric alpha-diimine nickel catalysts as well as a preparation method and application thereof, and belongs to the technical field of catalysts. On the basis of ensuring the thermal stability of the catalysts and the catalytic performance of the catalysts capable of obtaining a polymer with a high molecular weight through catslysis, the catalysts solve the technical problem of a low degree of branching of a polymer obtained by catalyst-catalyzed ethylene polymerization in the prior art. The asymmetric alpha-diimine nickel catalysts have a structural formula represented by a formula (I) shown in the specification, on one hand, the catalysts adopt large steric hindrance skeletons of 2,6-bis(diphenylmethyl)phenyl and derivatives of the 2,6-bis(diphenylmethyl)phenylwhich can rotate freely, the electronic and steric effects of the large steric hindrance are changed, on the other hand, the catalysts adopt skeletons of pentiptycene and derivatives of the pentiptycene which can limit geometric rotation, and the electronic and steric effects of the pentiptycene are changed, so that the target that the polymer with the high molecular weight and a branching degreecapable of being regulated and controlled in a large scale is obtained at high temperature can be realized.

The invention discloses a method for recycling naproxen resolution solvent, resolving agent and by-product by the overgravitational field. A solution containing a resolution solvent, a resolving agent such as N-n-octylglucamine, and by-product such as L-naproxen and L-naproxen N-n-octylglucamine salt after the separation of D- naproxen N-n-octylglucamine salt is firstly added in a overgravitational revolving bed for recycling resolution solvent, then the residual solution is diluted by water, the pH value is adjusted to 7 to 12, the resolving agent is recycled, the mother liquor is concentrated, the alkali C is added, the D,L- naproxen salt is obtained by the racemization reaction. The method adopts the overgravitational revolving bed to recycle the resolution solvent, the process is simple, the whole process is safe, steady and reliable, the operation and the maintenance are simple, the runing cost is greatly reduced, at the same time the production efficiency is improved; the obtained methanol is uniform, the recovery rate of the resolving agent and the D,L- naproxen salt is high, the obtained resolution solvent, resolving agent and D,L- naproxen salt can be directly reused, thus being resource-saving and having obvious environment benefit and social benefit.

The invention discloses a construction method of an adjustable capping beam formwork. The construction method includes the steps of 1, adjusting width of a capping beam bottom form, to be specific, designing the left and right ends respectively as moving portions on the same side of the capping beam bottom form and fixed portions on the same side of the capping beam bottom form, moving the movingportions on the same side, forming gaps between the moving portions and the fixed portions, filling the gaps with insert plates, and adaptively adjusting the width of a grouting sleeve positioning mechanism according to the adjusted widths of the left and right ends; 2, adjusting the height of capping beam side forms, to be specific, adjusting the height of the capping beam side forms through height adjusting mechanisms arranged at the lower portions of the capping beam side forms to assemble different types of capping beam side forms; 3, adjusting the position of capping beam end forms, to bespecific, setting the capping beam end forms at the two ends of the capping beam bottom form through adjusting devices, and adjusting the actual service height of the capping beam end forms and actual length of the capping beam bottom form through vertical and side-to-side movements of the adjusting mechanisms, so that casting of different types of capping beam formworks is satisfied.

The invention relates to a box body structure with an intelligent storing and taking function. An upper cover plate, three side plates which are arranged on the two sides and the back side, and a bottom plate are correspondingly connected to form a box body of which the opening is outward and the interior is hollow; a middle sealing plate is vertically arranged on the middle part of the plane where the opening position of the box body is arranged; middle clapboards vertical to the middle sealing plate are vertically arranged in the direction of the planes where the two side walls of the middle sealing plate are arranged respectively; the middle clapboards, the two side plates on the corresponding sides and the side plate on the back side respectively form two storing spaces; a plurality of clapboard supports are correspondingly arranged on the two inner side walls of each storing space; every two corresponding clapboard supports are matched with corresponding clapboards; the clapboards divide the storing spaces into a plurality of storing cabinets with cabinet doors. According to the box body structure, by adjusting the positions of the clapboard supports, the space of each storing cabinet is changed, and the requirement of express delivery parcels with different sizes is met; the cabinet doors of the storing cabinets are controlled by electromagnetic locks to be opened and closed, so that the operation is safer and more convenient.

The invention aims at providing a single-face double-point welding process for an automobile. The process is characterized in that the process involves a special welding machine, automobile welding special clamps, a transformer, single-face double-point welding tongs, single-face double-point welding mechanisms, a gantry steel structure, gantry sliding-out mechanisms, gantry bases, a welding tong welding plane moving structure, upper electrodes, lower electrode islands, conductive bridges and locating connection parts; the transformer and the single-face double-point welding tongs are carried on the special welding machine, single-side double-electrode welding is adopted by the special welding machine, and the transformer is mounted on the top of the special welding machine. The process has the beneficial effects that full manual operation for welding can be achieved, only two workers are needed, and large heavy welding tongs are not used; the welding tongs are fixed to the special welding machine and are light, easy to operate and good in welding effect; on the basis that the functional requirement is met, the investment cost is lowered to a great extent, the operation difficulty of the workers is lowered, and the stability and multi-vehicle-type adapting capacity of equipment are greatly improved.

A novel diabetes-related immunoloregulation vaccine peptide VP is designed which can effectively prevent T1DM attack and is free of an atherosclerotic side effect. The VP peptide does not cause lipid disorders in serum of mice, sharp hs-CRP level increases or atherosclerosis side effects. The VP peptide can control blood glucose of NOD mice, maintain normal body weights of mice and reduce the incidence of T1DM. In addition, the VP peptide can maintain normal secretion functions of islet beta cells and can allow the cells to exert normal blood sugar adjusting functions.

The invention discloses a communication device sale frame convenient to install. The communication device sale frame comprises a sale frame body, a stretchable frame and a fixing pin. A positioning jack is fixedly formed below the sale frame body, and a fixing boss is installed inside the sale frame body. A stretchable plate is installed at the rear portion inside the sale frame body. A bearing plate is connected to the upper portion of the fixing boss. An anti-skid pad is fixedly arranged above the bearing plate. A label placement groove is formed in the front of the bearing plate, a fixing clamping block is arranged above the fixing boss, a hook is fixedly arranged at the lower portion inside the stretchable frame, the fixing pin is located inside a first bolt hole, and a connecting plug pin is installed inside the positioning jack. According to the communication device sale frame convenient to install, the stretchable frame and the sale frame body are fixed through the fixing pin, the installation procedure is easy to implement, operation can be performed conveniently, the connecting plug pin can be plugged into the positioning jack, and different numbers of sale frames can be spliced.

The invention discloses a rear suspension system of an automobile longitudinal power assembly, which comprises an upper bracket, a lower bracket and an elastic element, wherein the upper bracket and the lower bracket are arranged on a lower beam of the transmission case and obliquely extend upwards from both sides of the transmission case; and the elastic element is arranged between the upper bracket and the lower bracket arranged on both sides of the transmission case. On the premise of not changing the prior automobile power assembly and the vertical space relationship of the transmission case beam, the cushion room is increased and the action center of the elastic element is changed. The upper and lower brackets obliquely extend upwards from both sides of the transmission case, and the elastic element is arranged between the upper and lower brackets on both sides of the transmission case, so that the upward and downward arrangement of the elastic element is not restricted by the transmission case and the volume and amount of compression of the elastic element can be obviously increased as compared with those in the original design. Meanwhile, since the space permits, the elastic element and the horizontal surface can form an included angle, thereby optimizing the arrangement of the suspension system.

The invention discloses a p-phenyl substituted alpha-diimine palladium catalyst and a preparation method thereof. The preparation method comprises the following steps: adding a p-phenyl substituted aniline derivative and 2,3-butanedione into a dry flask, carrying out a reflux reaction by taking absolute methanol as a solvent and formic acid as a catalyst to obtain a precipitate, recrystallizing the obtained crude product through a mixed solvent, carrying out filtering, carrying out washing with cold ethanol, and carrying out vacuum drying to obtain a p-phenyl substituted alpha-diimine ligand;and under protection of N2, mixing the p-phenyl substituted alpha-diimine ligand with PdCl2(MeCN)2, adding CH2Cl2, carrying out stirring for reacting, filtering the mixed solution, removing the solvent of the obtained liquid by rotary evaporation, washing the obtained solid with diethyl ether, and finally carrying out vacuum drying to obtain the catalyst. The catalyst disclosed by the invention isapplied to an alpha-olefin polymerization reaction, and polyalpha-olefin (PAO) lubricating oil base oil obtained through a polymer has the advantages of low pour point, high viscosity index and the like, so that the use effect of PAO lubricating oil is greatly improved, and use requirements on the market are met.

The invention relates to the field of vegetable planting, in particular to an organic vegetable planting device. The organic vegetable planting device comprises a main frame mechanism, a transmissionmechanism, an air pump, a plurality of branch frame mechanisms, seed box mechanisms, sowing mechanisms, seed grain carrying mechanisms, seed grain adjusting mechanisms, stirring mechanisms and axis mechanisms. The multiple branch frame mechanisms are all fixedly connected with the main frame structure; the seed box mechanisms are fixedly connected to all the multiple branch frame mechanisms; the sowing mechanisms are rotationally connected into the multiple seed box mechanisms; the multiple seed grain carrying mechanisms are slidably connected into each sowing mechanism; the seed grain adjusting mechanisms are rotationally connected to the multiple sowing mechanisms, and each seed grain adjusting mechanism is slidably connected with the multiple seed grain carrying mechanisms; the stirringmechanisms are rotationally connected in the plurality of seed box mechanisms; and a plurality of axis mechanisms are arranged, and the plurality of axis mechanisms are rotationally connected in thesowing mechanism respectively, so that seeds can be greatly prevented from rolling after falling to the ground, and good growth of vegetables is facilitated.

The invention relates to an inductively coupled plasma mass spectrometer capable of regulating vacuum pressure. The inductively coupled plasma mass spectrometer capable of regulating the vacuum pressure comprises a first vacuum chamber, a second vacuum chamber, a third vacuum chamber, a fourth vacuum chamber, first tuning parts and second tuning parts, wherein the first tuning parts are pumps, and the pumps are connected with the vacuum chambers at various levels and used for regulating pressure of the vacuum chambers at various levels; the second tuning parts make the vacuum chambers at various levels communicated with each other, and are used for regulating pressure between the vacuum chambers at various levels. The inductively coupled plasma mass spectrometer capable of regulating the vacuum pressure has the advantages that the space-charge effect is optimized and reduced, the effects of anti spectrum interference and non-spectrum interference effect are improved, and the ion transport is optimized.

The invention relates to a method of applying polyethyleneimine as a titanium carbonitride based cermet mixed material dispersant, PEI accounting for 0.035wt%-1.1628wt% of the powder is added when the titanium carbonitride based cermet mixed powder is ball milled, and the pH of the material slurry is controlled between 6 and 7 to obtain a best dispersion environment. Through settlement observation and comparison, adopting the PEI as the dispersant can significantly improve the dispersiveness of TiN-TiC-Mo-C mixed powder in an absolute ethyl alcohol medium when ultrasonic wave and ball milled powder are mixed. The viscosity of the material slurry prepared by adding PEI is lower than the viscosity of the material slurry prepared by adding PEG with the same percentage by weight. Compared with Ti (C, N) base cermet without PEI mixed material, the Ti (C, N) base cermet prepared by adding the PEI mixed material has increased compaction density, the porosity of a sintered body is reduced, the microstructure is homogeneous, and the bending strength is improved.

The invention relates to the technical field of iron beam sputtering film plating, in particular to an ion source maintenance device and an ion source maintenance method. Through an insertion plate valve, an iron source maintenance cavity and a vacuum cavity are in separated arrangement; an iron source is maintained under the condition of not exposing the vacuum cavity into the atmosphere environment; the pollution of the vacuum cavity is avoided; in addition, an isolation protection sleeve is additionally added outside the iron source, so that a radio frequency iron source cannot interfere the normal movement of charged particles in the cavity; during the film plating process, the iron source can move inside the vacuum cavity; the target source distance can be regulated; the beam spot size and the beam flow space distribution are changed; further, the film deposition quality and the space distribution condition are regulated.

A power divider comprises a three-dimensional core component comprising a lump capacitance with a compact structure, a lumped spiral inductor with a square three-dimensional multi-layer screw type structure and input leads Lin from top to bottom. The three parts are packaged in 3D by LTCC technology to form the power divider with a compact structure, and the diameter of the inductance coil is effectively reduced by the lumped spiral inductance with a square three-dimensional multi-layer spiral structure so as to reduce the plane size of the power divider, thereby realizing the compact structure, and the power divider has the characteristics of small volume, light weight and low cost; The lumped spiral inductance and the lumped capacitance directly above the lumped spiral inductance form three sets of LC impedance matching conversion sections, which can replace the traditional quarter wavelength transmission line, simultaneously realize higher impedance value under the condition of reducing the plane size, improve the matching of the output ports, and increase the isolation degree between the ports.

The invention discloses an efficient automobile fuel high-pressure pump. The efficient automobile fuel high-pressure pump comprises a conveying adjusting oil tank, a filter box, a transmission box andan oil conveying channel, oil inlets are formed in the two ends of one side of the bottom of the transmission box, the oil conveying channel is formed in one side of the transmission box, a driving gear and a driven gear are arranged on one side of the transmission box, the filter box is installed at the top of the transmission box, the conveying adjusting oil tank is mounted at the top of the filter tank, and an oil conveying opening is formed in the top of the conveying adjusting oil tank. The automobile fuel high-pressure pump is simple in structure, the automatic gasoline conveying process can be completed only through cooperation of a first worm, a second worm, a third worm and a fourth worm, and the automobile fuel high-pressure pump has the advantages of being low in manufacturingcost and high in conveying efficiency; a filter plate is mounted in the filter box, so that the situation that impurities block an oil supply pipe and an automobile oil nozzle, and consequently an automobile breaks down is avoided; and a piston plate moves in an inner cavity of the conveying adjusting oil tank, the speed of gasoline output from the oil conveying opening is changed, and the gasoline output amount becomes controllable.

The invention discloses an intelligent wardrobe, which relates to the field of furniture, and comprises a cabinet body, the cabinet body is divided into a left cabinet body and a right cabinet body, the upper top and the lower bottom of the left cabinet body are provided with slide grooves, the The upper top and the lower bottom of the right cabinet are provided with pulleys, and the pulleys roll in the chute. The cabinet is provided with three sliding doors, and the left side wall of the cabinet is provided with a rotating seat. There is a full-length mirror, the rotating seat is rotatably connected to the cabinet body, a partition is provided between the left cabinet body and the right cabinet body, a germicidal lamp and an IoT system are arranged on the partition board, and the IoT system is connected to the The germicidal lamp is electrically connected. This design is simple in structure, easy to use, reasonable in layout, adjustable in the inner space of the wardrobe, and can be remotely controlled for sterilization, with high practicability.

The invention discloses a physiological helmet. The physiological helmet comprises an outer shell, an inner fixing mechanism and an adjusting mechanism, wherein the adjusting mechanism comprises a plurality of electric push rods, a controller, a battery, a switch and a plurality of pressure sensors; the inner fixing mechanism comprises an inner shell and a buffer pad arranged on the inner side ofthe inner shell, and the inner shell is arranged on the inner side of the outer shell; the fixed end of the electric push rod is connected with the inner side of the outer shell, and the movable end of the electric push rod is connected with the outer side of the inner shell; the controller is arranged on the inner side of the outer shell; the switch is arranged on the outer side of the outer shell; the pressure sensors are arranged on the buffer pad; and the electric push rod and the pressure sensors are electrically connected with the controller. The battery supplies electricity for the electric push rod, the controller and the pressure sensors. The switch is used for controlling the battery to supply electricity. The positions of the inner shell and the buffer pad can be adjusted, and the internal space of the helmet can be gradually changed according to physiological changes of children.

The invention discloses a nectarine planting greenhouse capable of conveniently adjusting sunlight irradiation. The greenhouse comprises a transparent plastic shell, pull rods, a stretching plastic film, an arc-shaped supporting frame, buckles, sprinkling irrigation components, first telescopic rods, inserting cylinders, a stretching spring, a swinging rod and a servo motor. The arc-shaped supporting frame can ascend and descend with the assistance of a hydraulic column so that the space of the greenhouse can be changed with the growth of nectarines, growth requirements of nectarine trees canbe met, and mass pruning is avoided; a semi-transparent shading cloth or non-transparent shading cloth with a covering function is arranged outside the transparent plastic shell, so that the irradiation intensity of sunlight on the nectarine trees is changed, and a comfortable illumination environment can be better provided for the nectarine trees; an exhaust pipe and a drainage pipe are pre-arranged on a foundation, and sprinkling irrigation and exhaust of the nectarine trees can be realized by sliding vertical rods easily and conveniently without pulling pipes, and the nectarine trees are protected.

The invention discloses a plate rolling machine capable of bending pipes, which comprises a tilting frame and a base which are vertically arranged up and down, lower rollers are arranged on the left and right ends of the base, and the junction of the tipping frame and the base runs through There is an upper roller, the upper roller is located in the middle above the two lower rollers, the end of the upper roller is connected with the upper roller positioning shaft, the upper roller positioning shaft is threaded with a pinch wheel, and the outer end of the pinch wheel is adjusted by the upper roller The nut is fixed on the positioning shaft of the upper roller, the positioning shaft of the lower roller is set inside the ends of the two lower rollers, and the supporting wheels are sleeved on the positioning shafts of the two lower rollers, and the outer ends of the two supporting wheels are connected to the limit of the lower roller. The hex nut is fixed on the lower roller positioning shaft. The pressing wheel and supporting wheel of the present invention are tightened and fixed by the upper roller adjusting nut and the lower roller limit hexagonal nut, which is convenient for loading and unloading; the upper roller and the lower roller adopt pressing wheels and supporting wheels of different diameters to change the The space through which the tube blanks to be processed passes through is suitable for bending tube blanks of different specifications at different angles.

The invention provides a stone lithotripter for urology departments, and relates to the technical field of medical care equipment. The stone lithotripter includes a cutting shell, storage cylinders, acorrugated connecting pipe and a turning tail pipe; the cutting shell is in threaded connection with the storage cylinder; the corrugated connecting pipe is fixedly connected to the right end of thestorage cylinder; the turning tail pipe is fixedly connected to the other end of the corrugated connecting pipe; the part, close to the left end, on the inner sidewall of the cutting shell is fixedlyconnected to a first sliding rail; the inner side of the first sliding rail is movably connected to a cutting base; and the inner side of the cutting base is fixedly connected to a cutting structure.Through the adoption of a micro-motor, the structure of a pushing disc and a pushing block can be driven to push a fixing rod, and swinging can be generated between the storage cylinders on the two sides of the corrugated connecting pipe and the turning tail pipe, so that directions can be changed; and the stone lithotripter is simple in structure and convenient in control, so that convenient using of the stone lithotripter can be realized.

The invention provides a pedal device and an injection pump comprising the pedal device. The pedal device comprises a horizontal plate, an inclined plate connected with one end of the horizontal plateand obliquely arranged in a manner of forming an included angle theta with the horizontal plate, at least one elastic pedal part arranged on the horizontal plate in the area of the included angle theta, and at least one elastic foot top part arranged on the inclined plate. The distance between the joint of the horizontal plate and the inclined plate and the foot top part is not smaller than thatbetween the joint and the pedal part, and theta is greater than 0 degree and smaller than 90 degrees. The signal output ends of the pedal part and the foot top part can be respectively connected withthe signal input end of an external device. According to the pedal device, the two control modes can be triggered only by operating the pedal part downwards through the tiptoe and operating the foot top part upwards through the tiptoe without changing the position of the foot, the occupied space is small, and the arranged pedal part and foot top part are very easy to distinguish in the using process and are not prone to being stepped by mistake.

The invention provides an adjustable resonance chamber for a musical instrument, and relates to a component used for amplifying sound in the musical instrument. The resonance chamber comprises a top plate, a bottom plate, side plates, a spring clamp, magnets, a movable partition board and a tone tuning module. The top plate, the bottom plate and the side plates are connected together through the magnets to constitute a chamber body. The bottom plate is sleeved within a space between the side plates and can slide up and down to change an internal space of the chamber body. A long hole is formed in the top plate, and the magnets are arranged on the half front portion of the top plate. The movable partition board is arranged between the top plate and the bottom plate, a handle is arranged on the movable partition board and penetrates out from the long hole in the top plate, the movable partition board is composed of two boards, upper sides of the two boards are connected by hinges to form a herringbone shape, the handle is arranged at the top end of the movable partition board, the top of the movable partition board is further provided with the spring clamp, and bottom edges of the two boards are provided with idler wheels. The tone tuning module is arranged on the lower portion of the front of the top plate and is a wedge-shaped solid-core plate, wherein a fracture surface of the wedge-shaped solid-core plate gradually thickens. By means of changes of the thickness of the tone tuning module and moving of the partition board and the bottom plate, the resonance chamber can conveniently and flexibly change timbres and tones.

The present invention relates to an inductively coupled plasma mass spectrometer with adjustable vacuum pressure, comprising: a first vacuum chamber, a second vacuum chamber, a third vacuum chamber, and a fourth vacuum chamber; the inductively coupled plasma mass spectrometer further includes: The first tuning part, the first tuning part is a pump, connected to the vacuum chambers of all levels, and adjusts the pressure of the vacuum chambers of the various levels; the second tuning part, the second tuning part makes the vacuum chambers of the various levels communicate with each other, Regulate the pressure between the various vacuum chambers. The invention also provides a method for adjusting the pressure of the vacuum chambers at each stage of the inductively coupled plasma mass spectrometer. The invention has the advantages of optimizing and reducing space charge effect, improving anti-mass spectrum interference and non-mass spectrum interference effect, optimizing ion transmission and the like.

The invention discloses a double-tube-plate cooling air pipe system of a high-temperature air preheater. The double-tube-plate cooling air pipe system is a cooling air pipe system which plays a role in protecting double tube plates of a high-temperature air preheater body, and the service life of the high-temperature air preheater is guaranteed. The double-tube-plate cooling air pipe system comprises a cold air main pipe (2), a middle straight pipe (3), a middle bent pipe (4), a right-angle metal hose (5) and a double-tube-plate short section (6), wherein air inlet connecting pipes which are uniformly distributed on the double-tube-plate short section (6) are connected to the cold air main pipe (2) through the right-angle metal hose (5), the middle straight pipe (3) and the middle bent pipe (4). According to the double-tube-plate cooling air pipe system, the problems that an original double-tube-plate cooling air main air pipe system of the high-temperature air preheater is large in occupied area, and the strength and the rigidity are caused due to the fact that the length of a hot air outlet connecting pipe is influenced by the pipe system are effectively solved.