31results about How to "Avoid the effects of stress" patented technology

The invention discloses a self-drilling type spiral anchor rod and a construction process using the self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing, which are suitable for support engineering of anchor-pulling slopes in weak soil regions. A paste outlet is arranged on a rod body of the spiral anchor rod, the front end of the rod body of the anchor rod is enclosed, a spiral vane is welded at the front end of the rod body of the anchor rod, and a stirring slice is welded behind the spiral vane on the rod body of the anchor rod. The construction process using the self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing comprises the following steps of: injecting cement paste while drilling by rod body of the anchor rod, so that a paste body of the cement paste is ejected out of the paste outlet of the rod body of the anchor rod, mixing the paste body and a soil body cut by using the spiral vane on the front end, uniformly stirring the soil body and the cement paste by using the stirring slice arranged behind the spiral vane, forming an irregular anchor body after curing so that the anchoring force of the anchor rod is increased. Because the drilling and the grouting are integrated, the pressure influence of subsequent grouting on the side wall of a foundation pit is avoided; and meanwhile, the grouting pressure can be effectively controlled so that the grouting quality can be ensured.

The invention relates to an isolated working heart dual-channel perfusion experiment method and device for large animals, in particular to isolated working heart dual-channel perfusion experiment method and device for large experimental animals such as pigs or large dogs. The method and device has the advantages that consumption of oxygen-rich anticoagulant blood is saved, heart performance is tested more comprehensively and required equipment is simple. The method is characterized by including: stopping an animal heart, subjecting bilateral coronary, pulmonary artery, pulmonary vein and artery to catheterization, and perfusing a coronary system with the oxygen-rich anticoagulant blood by means of bilateral coronary catheterization; recovering blood pumped out of the pulmonary artery from a right ventricle, testing with an experimental device, oxygenating, and perfusing the coronary with the oxygenated oxygen-rich anticoagulant blood to form an anticoagulant blood closed loop; perfusing with constant temperature physiological solution by a catheter in the pulmonary vein, and recovering the physiological solution through a catheter in the artery to form a physiological solution closed loop; reviving the heart by electrical stimulation.

The invention provides a water purifier capable of preventing water seepage and a control method thereof. The water purifier capable of preventing water seepage is provided with a filtration system, a water inlet valve, a drainpipe, a waste water valve, a water outlet pipe and a water outlet valve, wherein a water inlet of the filtration system is hermetically communicated with a water inlet pipe; the water inlet valve is arranged on a water inlet pipeline of the filtration system; the water outlet pipe is hermetically communicated with a waste water outlet of the filtration system; the waste water valve is arrange on the drainpipe; the water outlet pipe is hermetically communicated with a purified water outlet of the filtration system; the water outlet valve is arranged on the water outlet pipe; and the water outlet valve is a normally-open valve, is totally opened when power is not supplied and only has one small hole to allow water to pass through when power is supplied. The control method comprises the following steps: during preparation of water, controlling opening of the water inlet valve and closing of the waste water valve when power is supplied; during flushing, controlling opening of the water inlet valve when power is supplied and opening of the waste water valve when power is not supplied; and when the water purifier is in a standby state after completion of water production, controlling closing of the water inlet valve when power is not supplied and opening of the waste water valve when power is supplied. The water purifier can prevent water leakage accidents.

This invention provides a semiconductor device that can ensure that stress on the nitride film is not increased or is reduced, and that can prevent an increase in interconnection capacity. The semiconductor device comprises a underlayer, a base oxide film that is formed on this underlayer, a nitride film pattern with a hole pattern that is provided on this base oxide film, holes that penetrate the base oxide film, an upper oxide film provided on the base oxide film to cover the nitride film pattern, wiring grooves provided through the upper oxide film in which part of the nitride film pattern including the hole pattern is exposed, and wiring metal that fills the holes and wiring grooves. The nitride film pattern is formed with such a shape and size that surrounds the outside of the wiring grooves and is separate from neighbouring nitride film patterns.

The invention discloses a water inlet detection method of a food processor and the food processor. The food processor comprises a water tank, a cup body, a water level detection module used for detecting whether water exists in the water tank or not and a water pump with a preset water pumping speed. The water tank and the cup body are directly communicated through a pipeline, the water level detection module is arranged on the pipeline, and the water inlet detection method of the food processor comprises the steps that a main control circuit obtains a detection result of the water level detection module, and the detection result is used for indicating whether water exists in the water tank or not; the main control circuit controls the water pump to pump water at a preset water pumping speed according to whether water exists in the water tank; wherein the corresponding preset water pumping speeds are different when water exists in the water tank and no water exists in the water tank. According to the water inlet detection method of the food processor and the food processor, residual water and residual air pressure in the pipeline between the water tank and the water pump can be emptied, so that the influence of the residual water and the steam pressure in the pipeline is avoided, and the reliability of water existence detection or water level detection is improved.

The invention discloses an experimental device and method for accurately measuring and calculating the change of hydrate content in small-volume sediments. The small-volume reactor is connected with a standard gas chamber, and a stop valve is arranged between the two; The reaction kettle is connected to the standard gas chamber, and the gas pressure difference between the small-volume reaction kettle and the standard gas chamber is measured by a differential pressure sensor; the small-volume reaction kettle, the standard gas chamber and the differential pressure sensor are all placed in the temperature control module. The temperature control module controls the temperature of the three to be the same and constant. Differential pressure sensors are used to measure gas pressure changes, which are easier to measure small changes in gas pressure caused by hydrate synthesis or decomposition in small-volume sediments. It is easy to obtain high-resolution experimental data of hydrate molar content during synthesis and decomposition. The temperature control module effectively avoids the influence of temperature changes on gas pressure, thereby ensuring the accuracy of hydrate content change measurement.

The invention provides a solid pollutant remover spraying device with a flange-type inlet. The solid pollutant remover spraying device with the flange-type inlet comprises the remover inlet, a removerspray gun flange, remover spray guns, remover outlets and a remover guide board, wherein the remover inlet and the remover outlets are formed in the remover spray guns, the remover spray gun flange is arranged on the remover spray guns, the remover spray guns are provided with spray pipes with a number equal to or larger than 2, the remover guide board is welded to the spray guns through a support, and is longitudinally distributed along the spray guns, a cross section is in a shape of the Greek letter omega, moreover, by means of flat wing surfaces which extend from the remover guide board,the area of the remover guide board can be enlarged, the portion, located in a smoke contact position, on the lower reach of the remover guide board forms a low pressure area, thus turbulence of fluidis enhanced, effects of smoke are avoided, a spraying area of a remover is enlarged, thus the remover and the corresponding fluid are combined better, and the remover guide board is arranged below aninlet curved pipe, so that the spraying quantity of each spray gun is further uniformized.

The invention discloses a sensor preparation method, a strain grid preparation device and a sensor. The sensor comprises a base body, an analog-to-digital converter, electrodes and a strain grid, wherein the base body is made of wood, the analog-to-digital converter, the electrodes and the strain grid are arranged on the surface of the wood, the input end of the analog-to-digital converter is connected with the two electrodes, the strain grid is located between the two electrodes, the two ends of the strain grid are connected with the two electrodes respectively, and the strain grid is made of a three-dimensional porous carbon material. The preparation process comprises the steps that wood is placed in a vacuum environment, and the strain grid is marked and generated on the surface of the wood through a laser induction method; the analog-to-digital converter is installed on the wood; and two electrodes and wires connected with the electrodes are laid on the wood through conductive materials, the two electrodes are connected with the two ends of the strain grid respectively, and the wires are connected with the analog-to-digital converter. The sensor can be degraded, so that environmental protection is facilitated.

The invention provides a flange type inlet pollutant solid remover spraying device. The flange type inlet pollutant solid remover spraying device comprises a remover inlet, a remover spray gun, a remover outlet, a remover guide plate and remover uniform-spacing plates, wherein the remover inlet and the remover outlet are formed in the remover spray gun; the remover spray gun is provided with a plurality of spray tubes; the remover guide plate is welded on the spray gun through a bracket, and is longitudinally arranged along the spray gun, and the cross section of the remover guide plate is Omega-shaped; moreover, the flat wing surface extended from the remover guide plate can increase the area of the remover guide plate, so that the remover can completely cover each circulating surface ina flue, and therefore, the remover is guaranteed to uniformly spread, and concentration distribution is reasonable; the remover uniform-spacing plates are arranged below an inlet bent tube, and a remover flowing in through the bent tube is uniformly distributed into each spray tube, so that pollutants in the smoke gas are guaranteed to be sufficiently in contact with the remover, and therefore, removal of the pollutants is guaranteed to reach the ideal degree. Besides, the pollutant solid remover spraying device has the advantages of being easy in replacing and convenient in maintaining and repairing.

The invention discloses a valve structure with a built-in circulation channel. The switching valve includes a 3-channel to multi-channel high-pressure liquid or gas valve with the structure. Specifically, the valve structure comprises: a valve stator connected to a pipeline and a valve rotor with the built-in circulation channel structure. The stator structure has no difference with the prior art, however the rotor has fundamental change compared with the prior art. For the rotor, the traditional surface arc-shaped groove is successfully changed into an inclined hole of the built-in circulation channel, thus fundamentally solving the key problems of end face wear caused by valve stator and valve rotor asymmetry, end face pressure nonuniformity brought about to rotation when the valve works under pressure and no pressure, and easy liquid leakage of an arc-shaped groove structure, etc.

The invention relates to the technical field of coke oven thermotechnical regulation, and particularly discloses a method for measuring and regulating the temperature of a regenerative chamber. The method is applied to a heat accumulating type coke oven system and comprises the following steps: simultaneously measuring the temperatures of a small gas flue and a small air flue with the same serial number by using a temperature measuring device; judging the heating mode of the heat accumulating type coke oven system, expanding the opening degree of the adjusting turning plate of the small flue with the temperature needing to be increased, reducing the opening degree of the adjusting turning plate of the small flue with the temperature needing to be reduced, if the coke oven system adopts coke oven gas for heating, adjusting the temperature difference between the first temperature and the second temperature, and if the coke oven system adopts blast furnace gas for heating, adjusting the temperature difference value to be between third temperature and fourth temperature. By means of the method, the two regenerative chambers can preheat the upflow to the similar temperature, the situation that the pressure of the observation hole and the air coefficient in the combustion chamber are affected is avoided, heat brought out by waste gas is reduced, the heat exchange efficiency of the regenerative chambers is improved, and the uniformity of the straight movement temperature of the coke oven is improved.

The invention discloses a stator lead-out wire connection structure of a three-phase asynchronous generator. The structure includes a single-turn buffered stator lead-out harness, an electrical connecting board, and special-shaped topological binding terminals. The single-turn buffered stator lead-out harness includes three stator lead-out wires, and each stator lead-out wire includes a first vertical part, a second vertical part and a bending part from top to bottom. One end of each special-shaped topological binding terminal is welded with the first vertical part of one corresponding statorlead-out wire, and the other end of each special-shaped topological binding terminal is connected with the electrical connecting board. According to the invention, the risk of fatigue damage of the stator lead-out wires under the condition of long-term vibration of a generator can be reduced, and the service life of the generator can be prolonged.