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31results about How to "Avoid disturbing effect" patented technology

Bridge loading test deflection testing instrument

The invention relates to the technical field of bridge deflection tests, in particular to a bridge loading test deflection testing instrument. The technical scheme is that the bridge loading test deflection testing instrument comprises an instrument tank box and a leveling instrument which is arranged on the top face of the instrument tank body and used for measuring the levelness of the top face of the instrument tank body, and side face opening holes are formed in the side faces of the tank body. Three springs are fixedly hung on the upper portion of the tank body, a testing platform is connected at the lower ends of the springs, a testing instrument support is fixedly arranged above the testing platform, and the deflection testing instrument is fixedly arranged on the testing instrument support. A turn buckle which is used for adjusting the lengths of the springs before a deflection test is hung below the testing platform. The upper end of a deflection testing rope is fixedly arranged at the lower end of the turn buckle, and the lower end of the deflection testing rope is connected with a counterweight block placed on the ground. A large hang ring is arranged on the top face of the outer portion of the tank body. The bridge loading test deflection testing instrument is reasonable in structural design, convenient to manufacture, mount and arrange, high in deflection test precision, capable of effectively solving the problems that labor and materials are consumed, working at heights is needed, mounting and dismounting are troublesome, the test precision is hard to guarantee and the like of an existing deflection test system in load tests.
Owner:西安瑞通路桥科技有限责任公司

Horizontal flow precipitation separation device

The invention relates to a horizontal flow precipitation separation device. The horizontal flow precipitation separation device is characterized by comprising multiple corrugated plates arranged in a precipitation pond, wherein each corrugated plate is vertically arranged relative to a horizontal plane, the adjacent corrugated plates are symmetrically arranged and are spaced, and the smallest interval of the adjacent corrugated plates serves as a sludge discharging channel. Compared with the prior art, the horizontal flow precipitation separation device preserves the advantages that a flow direction and a precipitate sludge discharging direction are mutually vertical without interfering with each other, the disturbance between the horizontal flow and a precipitate is avoided, the submerged sludge is prevented from suspending again, meanwhile, a sludge discharging manner is optimized, the vertical sludge discharging channel is adopted, when stream horizontally flows through a stream channel, suspended solids are collided with a frame of the stream channel to rapidly precipitate, and slide downwards along the frame to enter the sludge discharging channel so as to directly precipitate to the bottom of the precipitation pond, and a wobble plate does not need to bear load, so that a problem of load-bearing of the wobble plate caused by large precipitate quantity is solved.
Owner:ZHEJIANG DEAN TECH

Horizontal water flow vertical mud discharging sedimentation and separation device

The invention relates to a horizontal water flow vertical mud discharging sedimentation and separation device, which is characterized by comprising a plurality of corrugated boards mounted in a sedimentation tank; all the corrugated boards are vertically arranged relative to the horizontal plane; adjacent corrugated boards are symmetrically arranged and spaced; the minimum distances between the adjacent corrugated boards are mud discharging channels. Compared with the prior art, the horizontal water flow vertical mud discharging sedimentation and separation device reserves the advantage that a water flow is vertical to the mud discharging direction of sediment and does not interfere in the sediment, avoids the disturbance of a horizontal water flow to the sediment, prevents sinking mud from suspending, meanwhile, optimizes a mud discharging manner and adopts the vertical mud discharging channels; after a water flow horizontally flows through the water flowing channels, suspended matters bump into the side frames of the water flowing channels, quickly deposit, and slide downwards along the side frames to the mud discharging channels, and directly deposit at the bottom of the sedimentation tank; an oblique board bears nothing, so that the load bearing problem of the oblique board, caused by overweight sediment, is solved.
Owner:ZHEJIANG DEAN TECH

Novel sewage treatment device

The invention relates to a novel sewage treatment device. The novel sewage treatment device comprises a reaction tank, wherein the reaction tank is separated into an aerobic zone, an anaerobic oxygen-poor zone and an anaerobic zone; the side wall is provided with a water inlet hole and a mud scraper is arranged at the bottom; a mud bucket is arranged below the reaction tank; the mud bucket is internally provided with a pushing device; a separation plate is provided with an aeration device and is accumulated with an AO reactor; a water passing hole and a water passing weir are arranged on the upper part of the reaction tank; a sludge reflowing hole and a liquid supernatant reflowing hole which is connected with a liquid supernatant pumping-out hole of a sedimentation basin are formed in the side wall of the reaction tank; the sedimentation basin and the reaction tank share one side wall; the sludge reflowing hole on the lower part of the sedimentation basin is communicated with the bottom of the sedimentation basin; the sedimentation basin is internally provided with a horizontal flow sediment separation device; a clean water outlet hole is formed in the side wall of the sludge sedimentation basin; the clean water outlet hole is formed above the horizontal flow sediment separation device; a water outlet weir is arranged on the outer side wall of the sedimentation basin. According to the novel sewage treatment device, the plane occupied area is greatly reduced; organic carbon in raw water can be sufficiently utilized to be used as a carbon source needed by a denitrification process of the oxygen-poor zone can be sufficiently utilized so that the adding amount of the additionally-arranged carbon source is reduced and the whole performance of a sewage treatment system is strengthened.
Owner:ZHEJIANG DEAN TECH

Hydraulic hammering type full-automatic soil sampling device and control method thereof

The invention relates to a hydraulic hammering type full-automatic soil sampling device and a control method thereof. Compared with the prior art, the defect that the analysis test result is influenced by large soil sample disturbance caused by manual soil sampling is overcome. A notch is formed in the upper bottom edge of a fixing frame, a soil scraping piece is installed on the upper bottom edgeof the fixing frame and located at the notch, the soil scraping piece is located over a flow guide cylinder, the soil scraping piece is oval, the size and the shape of the soil scraping piece are thesame as those of the inner wall of a soil sampling cylinder, a sliding groove is formed in the side portion of the flow guide cylinder, the size and the shape of the sliding groove are the same as those of the soil sampling cylinder, and when a double-acting hydraulic cylinder controls the fixing frame to move to the farthest end, the soil scraping piece is tangent to the longitudinal movement track of the inner wall of the soil sampling cylinder. Full-automatic processing of soil sampling can be achieved, the diversity of manual operation and soil disturbance are avoided, and the device canbe suitable for large-area and high-workload field soil component monitoring and collecting.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Steam turbine steam valve regulating system for nuclear power plant and safety control method of steam turbine steam valve regulating system

ActiveCN110173310AIncrease adjustmentEnsure control effectivenessMachines/enginesEngine componentsNuclear powerSafety control
The invention relates to the technical field of steam turbine regulating systems for million kilowatt nuclear power plants, in particular to a steam turbine steam valve regulating system for a nuclearpower plant and a safety control method of the steam turbine steam valve regulating system. The steam turbine steam valve regulating system comprises an oil circuit unit, a GSE unit, a GRE unit and acontroller. The safety control method includes the steps of controlling a valve opening operation performed by the GSE unit and the GRE unit in response to a valve opening command of the controller,or controlling a valve closing operation performed by the GSE unit and the GRE unit in response to a valve closing command of the controller. Because the safety control method adopts the operation sequence of separate oil inlet or oil loss of the GSE unit and the GRE unit in the valve opening operation or the valve closing operation, the system oil pressure disturbance caused by excessive instantaneous fuel consumption can be effectively avoided, the effect of the oil pressure drop on the protection action of adjacent units is further weakened, and the operation of maintaining the normal working state of the system is facilitated.
Owner:LINGAO NUCLEAR POWER +5

Three-axis device suitable for testing mechanical property of soil body under permeation effect of water circulation and use method of three-axis device

The invention discloses a three-axis device suitable for testing the mechanical property of a soil body under the permeation effect of water circulation and a use method of the three-axis device. Thedevice comprises a three-axis pressure chamber, an upper cross beam, a gradienter, a base, a bottom controller and a threaded supporting rod; the gradienter is arranged on the upper cross beam; the upper cross beam is fixedly connected with the bottom controller through the threaded supporting rod; the threaded supporting rod can be adjusted, so that the balance and contact of the upper cross beamcan be controlled according to the gradienter; the base is arranged on the bottom controller; the bottom controller can control the base to ascend and descend; the three-axis pressure chamber comprises a test system and a water circulation system for a soil sample; the three-axis pressure chamber is integrally airtight. With the device adopted, water circulation can be carried out on a soil sample to be measured; and then the mechanical property of the soil sample which has been subjected to water circulation is measured. The device has the advantages of simple structure, convenient operationand real and reliable test result.
Owner:ZHEJIANG UNIV OF TECH

Fluid synthesis preparation device for preparing Fe3O4 magnetic nanoparticles, and control method thereof

The invention relates to a fluid synthesis preparation device for preparing Fe3O4 magnetic nanoparticles, and a control method thereof. The defect that devices capable of preparing the Fe3O4 magneticnanoparticles do not exist in the prior art is overcome. The device comprises a first micro-reaction chamber assembly and a second micro-reaction chamber assembly, the first micro-reaction chamber assembly comprises a first micro-reaction chamber, the upper end of the first micro-reaction chamber is connected with an ethylene glycol supply tube, the bottom of the first micro-reaction chamber is funnel-shaped, the first micro-reaction chamber is placed on a magnetic stirrer, a sieve plate is arranged in the first micro-reaction chamber, a magneton is placed on the sieve plate, the front end ofa silicone tube is connected to the bottom of the first micro-reaction chamber, and the tail end of the silicone tube is connected to the upper end of the second micro-reaction chamber assembly. The preparation device capable of synthesizing the Fe3O4 magnetic nanoparticles cooperates with the fluid control method based on a pump valve to realize automatic preparation of the Fe3O4 magnetic nanoparticles.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI

Small dredging device with energy supplied by water and electricity

The invention belongs to the technical field of dredging equipment, and particularly relates to a small dredging device with energy supplied by water and electricity. According to the small dredging device, current with natural potential energy or current of water supplied by a water pump is used for impacting a vertical impeller to drive a transmission shaft to upwards stir sludge and convey thesludge to a sludge conveyor belt, the current impacts a front horizontal impeller and a rear horizontal impeller, the horizontal impellers rotate to drive the sludge conveyor belt to move through a belt so that the sludge can be transported to the sludge conveyor belt and discharged out of a discharge hopper. A sludge absorbing hopper of the device directly stretches into the sludge, in the dredging process, an upper clear water layer is not prone to being puddled, little or no effect is caused to the upper clear water layer, and dredging without stopping water can be achieved; pretreatment can be carried out on the removed sludge, the moisture content of the sludge is reduced, and later transportation is facilitated; and independent energy supplying or collaborative energy supplying of the electric energy and the water energy can be achieved, energy sources are saved, the massive structure is simple, the size is small, the small dredging device is suitable for a small dredging place,and the dredging effect is better for a round funneling pool bottom.
Owner:NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER

Sealed cabin sampling system

The invention provides a sealed cabin sampling system, which comprises a clean cabin body which is used for storing a to-be-detected object, keeping constant temperature and / or constant humidity and is in a closed state, and a compensation bag which can be expanded and is used for compensating the volume of gas in the clean cabin body, the clean cabin body is provided with an exhaust sampling port used for exhausting to-be-detected gas in the clean cabin body and a gas supplementing port used for circulating external gas, the compensation bag goes deep into the clean cabin body, the compensation bag is communicated with the gas supplementing port through a gas supplementing pipeline, and the compensation bag can perform volume compensation on the interior of the cabin body in the gas sampling and extracting process, so that pollution gas outside the cabin body can be prevented from entering the cabin body due to air pressure difference, the influence of environmental factors or other uncertain factors on a test result is avoided, the compensation bag goes deep into the clean cabin body, in the gas sampling, extracting and expanding process, the gas in the clean cabin body can be disturbed in a large range, the volatile organic compounds in the clean cabin body are distributed more uniformly, and the precision of a measurement result is ensured.
Owner:DONGGUAN CITY SIMPLEWELL TECH

Forming mold for testing inter-layer bonding properties of concrete and test method thereof

The invention relates to a forming mold for testing inter-layer bonding properties of concrete and a test method thereof and belongs to the technical field of highway engineering. The mold comprises acylindrical mold, a rectangular base, a measuring ruler and a troweling plate, wherein a fixed clamping groove is formed in the rectangular base, and the bottom end of the cylindrical mold is clampedin the fixed clamping groove; a plurality of leveling bolts are arranged around the rectangular base; the cylindrical mold comprises a left semi-circular shell and a right semi-circular shell, and one side of the left semi-circular shell is hinged with one side of the right semi-circular shell; the other side of the left semi-circular shell is detachably connected with the other side of the rightsemi-circular shell; and the measuring ruler is vertically arranged, and the bottom end of the measuring ruler is fixed on the troweling plate which is horizontally arranged. The mold provided by theinvention is used for integrated formation of an inter-layer binder and a concrete structure layer, can accurately control the dosage and the thickness of the binder, is convenient for fixing and disassembling test specimens, and avoids the disturbance to the inter-layer bonding properties caused by human factors to the maximum limit, thereby achieving the purpose of accurately evaluating the properties of the inter-layer binder.
Owner:BROADVISION ENG CONSULTANTS

Urban drainage pipeline sediment in-situ sampling device

ActiveCN111487088AOvercoming high moisture contentOvercome the softnessWithdrawing sample devicesDrainage tubesControl theory
The invention discloses an urban drainage pipeline sediment in-situ sampling device which comprises a supporting device and a sampling device. The sampling device comprises a sampling rod and a sampler connected with a tail end of the sampling rod; and the supporting device comprises a supporting rod, and the sampling rod moves relative to the supporting rod to enable the sampler to complete sampling action. A baffle used for opening and closing the sampler is also included. The baffle is fixed to the tail end of the supporting rod. The sampling rod comprises a horizontal rod and a vertical rod, a sliding clamping groove is arranged in the horizontal rod of the sampling rod, the supporting rod comprises a transverse rod and a vertical rod, a sliding rod is fixedly arranged on the transverse rod and embedded into the sliding clamping groove, and the sliding clamping groove and the sliding rod slide relatively. Supporting foot stands are fixedly arranged at the bottom of the supporting rod. In the invention, manual well descending sampling is not needed when a sediment is sampled, safety is improved, double operating rods (namely the sampling rod and the supporting rod) are designedin a matched mode, operation is easy and convenient, labor is saved, convenience and rapidness are achieved, safety and reliability are achieved too, an application range is wide, applicability is high, and integrity of the sediment in the sampling process is guaranteed.
Owner:HOHAI UNIV

Soil microorganism sample collection tool

The invention provides a soil microorganism sample collection tool, and belongs to the field of biological technologies. The soil microorganism sample collection tool comprises a basic piece and a tool bit, wherein a first connection piece is arranged on the basic piece; a second connection piece is arranged on the tool bit; the basic piece and the tool bit are detachably connected with each other through the first connection piece and the second connection piece; the tool bit comprises a connection block and a tool body; the connection block is semispherically annular; the second connection piece is arranged on the outer arc surface of the connection block; the tool body is cylindrical; one end of the tool body is connected with the two free ends of the connection block, and a blade is arranged at the other end of the tool body; a through hole is formed in the side wall of the tool body; a group of symmetric air holes are formed between the tool body and the connection block. According to the collection tool, the original mode of artificial soil excavation sampling is changed, so that the disturbance effect of an iron shovel and the like on a soil microorganism sample is avoided, manmade errors are reduced, the completeness of the soil microorganism sample is guaranteed, and the precision of test sample collection is improved; different drill bits are used on different soil lands, so that the outdoor working efficiency is improved, and the labor and the time are saved.
Owner:GRASSLAND RES INST OF CHINESE ACAD OF AGRI SCI

Horizontal Flow Vertical Sludge Discharge Sedimentation Separation Device

The invention relates to a horizontal flow vertical sludge discharge and sedimentation separation device, which is characterized in that it includes a plurality of corrugated plates installed in the sedimentation tank, each of the corrugated plates is vertically arranged relative to the horizontal plane, and adjacent corrugated plates are arranged symmetrically and mutually There is a distance between them, and the minimum distance between adjacent corrugated plates is the mud discharge channel. Compared with the prior art, the present invention retains the advantages that the water flow and sediment discharge direction are perpendicular to each other and does not interfere with each other, avoids the disturbance between the horizontal flow and the sediment, prevents the sinking sludge from resuspension, and simultaneously The sludge discharge method is optimized, and a vertical sludge discharge slide is adopted. When the water flows horizontally through the water flow channel, the suspended matter collides with the frame of the water flow channel and settles quickly, slides along the frame into the sludge discharge channel, and directly settles to the sedimentation tank At the bottom, the sloping plate does not need to bear weight, thus solving the load-bearing problem caused by the excessive amount of sediment on the sloping plate.
Owner:ZHEJIANG DEAN TECH

A leveling device for wind measuring instruments on large cables of long-span suspension bridges

The invention discloses a leveling device for a wind measuring instrument on a large cable of a large-span suspension bridge. The supporting steel plate is fixed on the crossbeam of the inspection road, and a platform panel for fixing the supporting rod of the wind measuring instrument is arranged above it. The supporting steel plate and the platform There is a controller and three leveling parts with the same structure between the panels; the controller receives the inclination data sent by the sensor, calculates the adjustment range of each servo motor according to the current inclination situation, and sends the adjustment command to the corresponding programmable Logic controller; the programmable logic controller turns on the servo motor, and the output end of the servo motor reducer is vertically provided with a ball screw; the matching screw nut is fixedly connected to the platform panel to drive the platform panel to lift and level. The invention can detect the inclination of the wind measuring instrument in real time, automatically adjust the angle of the instrument in time according to the inclination degree of the instrument, keep the instrument completely level, greatly reduce the workload of manual leveling, and improve the accuracy of wind measurement data.
Owner:SOUTHWEST JIAOTONG UNIV

Supercritical unit fuel calorific value correction control method based on dynamic coal-power ratio

The invention relates to a supercritical unit fuel calorific value correction control method based on a dynamic power-coal ratio, which comprises the following steps of: calculating a power-coal ratio loop by utilizing a judgment condition of steady-state operation of a unit to obtain a steady-state power-coal ratio coefficient of the unit, and performing product operation on the steady-state power-coal ratio coefficient and a current load instruction to obtain a power-coal ratio coefficient of the unit; obtaining the basic coal quantity of the unit under the condition of the current fire coal heat value; when the unit fire coal heat value changes, correcting the dynamic power-coal ratio of the unit through power-coal ratio correction trigger judgment, single correction coal quantity latching, correction coal quantity superposition and boiler master control reverse compensation of the power-coal ratio correction coal quantity. According to the method, the f(x) function of the coal quantity corresponding to the conventional load is replaced based on the power-coal ratio, so that the accuracy of the coal quantity following the change when the load is changed can be ensured, and meanwhile, the disturbance in the coal calorific value correction process can also be avoided.
Owner:DATANG DONGBEI ELECTRIC POWER TESTING & RES INST

A method for the preparation of fe 3 o 4 Fluid synthesis preparation device and control method for magnetic nanoparticles

The invention relates to a method for preparing Fe 3 o 4 The fluid synthesis and preparation device of magnetic nanoparticles and its control method, compared with the prior art, solves the problem that has not been able to prepare Fe 3 o 4 Drawbacks of Magnetic Nanoparticle Devices. The present invention includes a first micro-reaction chamber assembly and a second micro-reaction chamber assembly, the first micro-reaction chamber assembly includes a first micro-reaction chamber, an ethylene glycol supply pipe is connected to the upper end of the first micro-reaction chamber, and the first The bottom of the micro-reaction chamber is funnel-shaped. The first micro-reaction chamber is placed on a magnetic stirrer. There is a sieve plate in the first micro-reaction chamber. Magnets are placed on the sieve plate. The head end of the silicone tube is connected to the first micro-reaction chamber. At the bottom of the first micro-reaction chamber, the end of the silicone tube is connected to the upper end of the second micro-reaction chamber assembly. The present invention provides the ability to synthesize Fe 3 o 4 The preparation device of magnetic nanoparticles, combined with the fluid control method based on the pump valve, can realize Fe 3 o 4 Automated preparation of magnetic nanoparticles.
Owner:HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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