36 results about "Ventilation Tests" patented technology

The invention discloses an apparatus used for wind tunnel measurement building model surface static pressure and a wind pressure coefficient and a method thereof and belongs to the building technology field. A wind tunnel is included. An external portion of the wind tunnel is provided with a first Dwyer manometer used for measuring a reference height dynamic pressure value and a second Dwyer manometer used for measuring a static pressure value of a building surface test point relative to a reference height respectively. The first Dwyer manometer is connected to a first pitot tube. A total pressure tube of the first pitot tube passes through a floor of the wind tunnel and is extended to the reference height. A static pressure tube of the first pitot tube is connected to the first Dwyer manometer through an air tube. The second Dwyer manometer is connected to a static pressure tube of the second pitot tube through the air tube. A total pressure tube of the second pitot tube passes through the floor of the wind tunnel and is extended to the reference height. The Dwyer manometer is connected to a static pressure test tube whose tail end is in a ''V'' shape through the air tube. In the invention, a building model can be made into a solid building model; measurable building types are enriched, especially such as a residence type or a ventilation test of a building with a low budget.

The invention discloses a black smoke agent and a preparation method thereof. The black smoke agent comprises the following components in percentage by mass: 35-46% of black dye, 25-35% of oxidant, 15-25% of combustible agent and 1-8% of ammonium oxalate. The preparation method comprises the following steps: 1) preparing black dye; 2) uniformly mixing the black dye, the oxidant, the combustible agent and the ammonium oxalate to obtain a mixture; and 3) filtering the mixture obtained in the step 2), sealing and packaging to obtain the black smoke agent. The black smoke agent disclosed by the invention can be applied to ventilation test, leakage check of a sealed container and training simulation. The black smoke agent disclosed by the invention is nontoxic and environmentally friendly; the dye is not decomposed, pollutants or side effects are avoided, and the colormetric purity is high; and the black smoke agent is suitable for batch production.

The invention discloses a carbon dioxide labeled ventilation and air change measuring device outside a building, and belongs to the building ventilation test field. The carbon dioxide labeled ventilation and air change measuring device outside a building includes a carbon dioxide labeling gas supply release mechanism and a gas sampling analysis mechanism, wherein the carbon dioxide labeling gas supply release mechanism includes a carbon dioxide gas bomb (9); an outlet of the carbon dioxide gas bomb (9) is connected with a gas inlet pipe (8); the gas inlet pipe (8) is connected with a labeled gas inlet thin pipe (6) through a gas flow control valve (5); the labeled gas inlet thin pipe (6) penetrates through the internal of an air hole (1); the gas sampling analysis mechanism includes a plurality of sampling test holes (7) in the air hole (1); each sampling test hole (7) is communicated with a gas outlet pipe (3) which is arranged outside the air hole (1); and the gas outlet pipe (3) is connected with a gas analyzer (2). The carbon dioxide labeled ventilation and air change measuring device outside a building has the advantages of being safe and healthy, being accurate in testing, being simple, and enabling the ventilation test inside and outside the air hole to be efficiency and economical.

The invention provides an intelligent micro-positive pressure circulating air biosafety high-grade protective garment which comprises a protective garment body and a protective hood and further comprises a second ventilation and exhaust circulating system for ventilation of the protective garment body; a micro-positive pressure ventilation circulation system which is used for ventilation of the protective hood; a testing helmet which is connected to the inner side of the protective hood; a monitoring device which comprises a physiological health monitoring assembly which is arranged in the protective garment body or the testing helmet; a control box which comprises a controller and an alarm, and is electrically connected with the second ventilation and exhaust circulation system, the micro-positive pressure ventilation circulation system, the monitoring device and the alarm, wherein the controller is connected with the monitoring center; and a storage battery which is electrically connected with the controller. The interior of the protective garment body and the interior of the hood are ventilated respectively, use is comfortable, physiological health information of a user is obtained through the monitoring device, an alarm is given when parameters are abnormal, and the protective garment has the advantage of being safe to use.

The invention provides a seat cover cloth inspection and test platform. The platform comprises a machine bench, cloth fixing frames, a packing square cylinder, a fixed bottom plate, a rocker A, a guide round rod, a fixed top plate, a locking cylinder, processing frames, a processing conductor, a transverse friction frame, a rocker B, a longitudinal friction frame, a rotating shaft frame, a rockerC, a lifting frame, a ventilation test plate A, a ventilation test plate B and a friction wheel. The cloth fixing frames are integrally arranged on two sides of two ends of a top of the machine bench.Two sets of machining frames are fixedly arranged on one side of the top of the machine bench through bolts, and T-shaped sliding grooves are arranged in bottom sides of the tops of the machining frames. Through arranging the fixed bottom plate and the fixed top plate, a cloth fixing function with strong stability is provided for the test platform, and an inclined plane structure and a sphericalstructure are arranged between the fixed bottom plate and the fixed top plate so that stability is increased for cloth fixation. The fixed bottom plate and the fixed top plate can be cooperated with the rocker A to rotate so that cloth is secondarily tensioned, and use is convenient.

The invention discloses an indoor ventilation testing device for a building model, which comprises a cabinet body and a pipe distribution box, and is characterized in that the cabinet body is internally provided with a base, the temperature regulating bottom plate is equipped with a building indoor model, the internal part of the base is equipped with a continuous S-shaped bending temperature regulating pipe, the top of the cabinet body is equipped with a camera, the pipe distribution box is connected with an air outlet of a fan through a pipeline, the pipe distribution box is connected with agas tank through a pipelines, the side surface of the pipe distribution box is equipped with a plurality of gas pipe joints, each gas pipe joint is connected with an expanded joint through a hose, and each expanded joint includes a shell with the cross section being rectangular. The indoor ventilation testing device is abutted with a window of the building indoor model by using the expanded joints, the air flow is dispersed when passing through circular holes on a partition plate, the air flow passing through the partition plate is blown to blades, and the air is uniformly stirred by the blades, so that the air flow coming out of circular pipes is uniform in velocity, and natural external air intake can be simulated more closely.

The invention provides a grouting construction method for a steel-structured base. The method comprises the following steps of: 1, chiseling concrete at the periphery of an embedded steel-structured base, cleaning the chiseled loosened concrete, cleaning laitance, and blowing off accumulated dust below the steel-structured base by using a fan; 2, embedding a grouting pipe and an overflow pipe between the steel-structured base and a concrete foundation by using strong plugging cement, and sealing edges at the periphery of the steel-structured base by using rapid-hardening cement, wherein the overflow pipe is higher than the upper surface of the steel-structured base; 3, performing ventilation test, sucking air by using the grouting pipe and exhausting the air by using the overflow pipe to ensure that the air cannot be leaked from the grouting pipe, the overflow pipe and other parts; 4, allocating a grouting material, grouting, and stopping grouting until dense slurry flows out of the overflow pipe; and 5, maintaining under the condition that the height of the overflow pipe is kept unchanged after the grouting is finished, wherein the liquid level of grout in the overflow pipe is gradually reduced due to the air shrinkage performance of the grout, and backflow grout can be grouted densely. By the method, the poured grout is dense and has high intensity and high durability without formwork supporting.

The invention discloses a treatment device and a treatment method for CO2 flooding produced water. The device comprises a test device main box body, a plurality of hollow ventilation test columns arearranged in the test device main box body, a water inlet is arranged at the top of each ventilation test column, a sewage sampling port is arranged at the bottom of each ventilation test column, an electromagnetic coil is wound on the surface of the outer wall of each ventilation test column, and an aeration head is arranged below the internal of each ventilation test column. The treatment devicehas the characteristics of high flexibility, small occupied area and good scale prevention and corrosion control treatment effects, and can be used for effectively carrying out oil removal, scale removal and corrosion control treatment on CO2 flooding produced water.

The invention discloses a ventilator wind power control test tool platform and a use method, and relates to the technical field of ventilation test. An inner simulation cavity is formed in one side of a fan mounting partition plate and a heat absorption partition plate, an outer simulation cavity is formed in the other side of the fan mounting partition plate and the heat absorption partition plate, a fan is mounted on the fan mounting partition plate, and a ventilation connecting pipe for communicating the inner simulation cavity with the outer simulation cavity is arranged in a sealed cabin. The sealed cabin is fixedly provided with a heating module, an external temperature sensing module, an exhaust air pressure valve and an air inlet air pressure valve which are located in the outer simulation cavity, the sealed cabin is fixedly provided with an internal temperature sensing module and a temperature adjusting pipe which are located in the inner simulation cavity, and a base plate moving in a directional mode is installed in the inner simulation cavity. The substrate is provided with a test assembly directly facing the ventilator and a distance sensing module used for sensing and detecting the moving distance of the test assembly. According to the invention, the ventilation efficiency of the ventilator in actual use environments of workshops and factories can be conveniently simulated, tested and judged.

The invention relates to a method for evaluating the comfort of wind speed for meat chickens and longitudinal ventilation testing cabins. The method comprises the following steps: (1) placing N longitudinal ventilation testing cabins in an artificial climate cabin with same temperature and humidity, selecting a batch of healthy chickens, dividing the healthy chickens into N groups randomly, respectively putting the grouped healthy chickens into cabin bodies of all the longitudinal ventilation test cabins; (2) designing N different wind speeds and starting N longitudinal ventilation testing cabins; (3) carrying out data acquisition of physiological, behavior and endocrine indexes; (4) according to test results, obtaining a dose-effect relationship curve model between the wind speed and all physiological, behavior and endocrine indexes of the meat chickens; (5) according to the dose-effect relationship curve model, in combination with the range of the physiological, behavior and endocrine indexes of the meat chickens when the meat chickens live in a comfortable environment, obtaining a most comfortable wind speed for the meat chickens under the temperature and humidity condition of the environment. The method has the advantages that the wind speed can be accurately adjusted and controlled, and various data of the meat chickens can be acquired under no catching and no stress response.

The invention relates to a boiler ventilation test data on-line acquisition system and an analysis and processing method. The analysis and processing method includes the following steps that: differential pressure, pressure, and temperature in a plurality of test pipelines of a boiler are acquired in real time through field acquisition components; the signals are sent to a data processing center;the data processing center performs calculation so as to obtain air volume, air speed, air speed deviation and the air volume correction coefficient of a total pipeline connected with four test pipelines; and a field test adjustment actuator receives a test instruction issued by the data processing center and then adjusts the air volume in the test pipelines until measurement under 0 to 100% workconditions is completed, so that pipeline performance curves under the corresponding working conditions can be obtained, and a corresponding control model is established according to the pipeline performance curves, and accurate control of the combustion of the boiler can be realized. The system and method of the invention have the advantages of large amount of acquired data, short collection period, and high accuracy of the acquired data. With the system and method adopted, artificially irreplaceable data discrimination and data processing capabilities can be realized, the information amountof test data can be increased, and the intelligent and automatic control of a system can be realized.

The invention relates to the technical field of checking of measuring tools, in particular to a clamp for checking an intelligent water meter. The clamp comprises a clamp body, wherein the clamp body comprises a groove-shaped structure which is defined by left and right side walls and a bottom plate; the two side walls at one end of the clamp body are transversely provided with a rotating shaft; left and right arc-shaped push plates are vertically fixed to the rotating shaft respectively; one end of the rotating shaft is provided with a bent handle; the middle part of the other end of the clamp body is fixedly provided with a seal washer. The clamp is fixed to an air supply pipe during use, the tested intelligent water meter is placed in the groove of the clamp main body, and the push plates on the rotating shaft are turned through the handle and are used for pushing a backing plate, so that the seal washer is pressed tightly by the tested water meter and is connected with the air supply pipe; the intelligent water meter can be connected with the air supply pipe through two or three simple actions, and then ventilation test can be performed; thus the clamp is extremely convenient and fast to use and the working efficiency is improved.

The invention provides a method for evaluating capacity reactivity and a monitoring system, the method is applied to the monitoring system in communication connection with breathing equipment, and the method comprises the following steps: acquiring the breathing equipment through the monitoring system, and providing a first value of a vital sign parameter of a subject during ventilation to the subject by initial setting, the initial setting is ventilation setting adopted by the breathing equipment before a ventilation test is carried out on the object; the monitoring system controls test setting of the breathing equipment according to a preset program, a second numerical value of vital sign parameters of the object when the breathing equipment provides ventilation for the object according to the test setting is obtained, and the test setting is ventilation setting adopted when the breathing equipment conducts a ventilation test on the object; a variation of the vital sign parameter is determined by the monitoring system based on the first value and the second value, the variation being used to assess the capacity reactivity of the subject. According to the method, manual parameter recording and evaluation result calculation are not needed, and the workload of users is reduced.

The invention relates to an intelligent ventilation operation system based on a gas meter and a method for achieving remote intelligent control. The system comprises a PC, upper computer control software, a ventilation operation frame and a to-be-tested gas meter. The PC and the upper computer control software are used for generating and issuing a ventilation test flow configuration instruction and a remote control instruction; the ventilation operation frame comprises a ventilation valve switch control main board corresponding to the gas meter to be tested; the ventilation valve switches on and off the control mainboard; and the controller is used for receiving and analyzing the flow configuration instruction and the remote control instruction, controlling the on-off of the correspondingventilation valve switch on the ventilation operation frame according to the remote control instruction, and testing the ventilation operation flow of the corresponding to-be-tested gas meter according to the flow configuration instruction. By adopting the system and the method provided by the invention, the manpower is saved, and the accuracy of the test process is also improved.

The invention discloses a multi-working-condition adjustable vertical vortex ventilation testing device which comprises an exhaust supporting frame and further comprises a plurality of air supply mechanisms, a pollution source item module and an exhaust mechanism, the exhaust mechanism is detachably installed on the exhaust supporting frame, the air supply mechanisms and the pollution source item module are arranged in the air exhaust supporting frame and are positioned right below an air exhaust port of the air exhaust mechanism; the plurality of air supply mechanisms are movably and uniformly arranged around the pollution source item module, and the plurality of air supply mechanisms are hinged to the pollution source item module; the air supply mechanisms which are uniformly distributed are arranged in the air supply device, so that not only is a vertical vortex formed, but also air supply at different angles can be realized by moving the air supply mechanisms; in addition, the pollution source item module can simulate pollutants at different temperatures; and the technical problems that in a current vortex ventilation testing device, working condition adjustment is difficult, flexibility is low, and a pollution source cannot simulate high-temperature pollutants are solved.

The invention discloses a method for extracting an overflowing property of a combustor air distribution baffle from boiler operation data. A special combustion chamber cold state ventilation test doesnot need to be performed, the ignition starting time of a boiler is shortened, and the manpower and material resources are saved; and an obtained resistance characteristic curve of the air distribution baffle can be used for measuring air flow of a combustor nozzle, so that the air distribution of the whole combustion chamber can be monitored and adjusted, the combustion efficiency of pulverizedcoal in the combustion chamber can be remarkably improved, and the generation of nitric oxide can be reduced.

The invention aims to provide a ventilation test device of a crankcase so as to shorten the period and reduce the cost in the development process of a ventilation system of an engine crankcase. The ventilation test device of the crankcase comprises a frame-type body formed by connecting coaming plates at the periphery; and two ends of the body are respectively provided with an air inlet and an air outlet. The ventilation test device is characterized in that a plurality of sliding plates are movably installed on side walls of two sides of the body. Through the slidable sliding plates, the ventilation test device of the crankcase can assemble different labyrinths simply and quickly and realize different ventilation schemes by utilizing a set of crankcase ventilation test device instead of a plurality of valve chamber cover caps for testing, therefore, the period can be shortened and the cost can be reduced in the development process of an engine.