32results about How to "Change operating conditions" patented technology

A diagnostic system and method for a valve, especially a check valve of a positive displacement pump, including at least one solid-borne sound sensor is provided. A first value of a parameter of a sound signal recorded in the closed state of the valve and a second value of a parameter of a sound signal recorded in the open state of a valve are determined essentially. A signal indicating a disturbance is issued if the deviation between the first value and the second value exceeds a predefined threshold value, resulting in particularly good insensitivity.

Certain example embodiments relate to techniques for detecting anomalies in streaming data. More particularly, certain example embodiments use an approach that combines both unsupervised and supervised machine learning techniques to create a shared anomaly detection model in connection with a modified k-means clustering algorithm and advantageously also enables concept drift to be taken into account. The number of clusters k need not be known in advance, and it may vary over time. Models are continually trainable as a result of the dynamic reception of data over an unknown and potentially indefinite time period, and clusters can be built incrementally and in connection with an updatable distance threshold that indicates when a new cluster is to be created. Distance thresholds also are dynamic and adjustable over time.

A water feeding system provided with: a first feed water line through which first feed water flows; a second feed water line through which second feed water having a lower pressure than the first feed water flows; a first heater that heats the first feed water; a first feed water introducing line that guides first heated feed water, which is the first feed water that has been heated by the first heater, to the second feed water line; a medium heat exchanger that causes the first heated feed water to exchange heat with a medium, thereby cooling the first heated feed water and heating the medium; and a cooling water injecting line that injects cooling water having a lower temperature than the first heated feed water into the first feed water introducing line, at a position located further to the second feed water line side than the medium heat exchanger.

A process for carrying TiO2 photocatalyst on metal surface includes such steps as cleaning metal surface, anodizing in acidic medium, hydrolyzing, leaching and coating tetrabutyl titanate and TiO2 film under the weak alkaline condition by the sol-gel-powder suspension method, and igniting at proper temp. Its advantages are strong photocatalysis action for degradating organic pollutants, and good electric conductivity and machinability.

The invention provides a solventing-out crystallization technique device and method through auxiliary control of films, and belongs to the technical field of crystallization engineering. When a crystallization solution is added to a raw material pot, a solventing-out agent is added to a material-liquid pot, electronic scales, a computer, a stirring device and temperature controlling devices are started, and after a system is stable, squirm pumps of the material-liquid pot are started, so that solventing-out agents can circulate between the material-liquid pot and a film assembly; and after the solventing-out agent is stable in circulation, the squirm pump connected to the raw material pot is started so that the crystallization solution enters the film assembly. The solventing-out agent and the crystallization solution which are in sufficient contact in the film assembly can perform nucleation growth in the film assembly, and then the solventing-out agent and the crystallization solution, after the nucleation growth, can flow into an external storing pot for filtration and post-treatment; and the solventing-out agent and the crystallization solution can also perform nucleation growth outside the film assembly, and after solutes are wholly dissolved, filtration is performed. The electronic scales record the addition quantity of the solventing-out agent in a real-time manner, and the addition quantity of the solventing-out agent is systematically controlled through controlling films and operation conditions, so that ideal crystal products are obtained.

The present invention relates to a raw material containing phenylethanol glycoside produced from Cistanche deserticola by applying membrane separation technology and a preparation method thereof. The raw material containing phenylethanol glycoside obtained from Cistanche deserticola in the present invention contains verbascoside > 40%, and the preparation method mainly includes Material selection, extraction, microfiltration, ultrafiltration, nanofiltration, drying and other processes. Compared with the prior art, the transfer rate of the active ingredients extracted from Herba Cistanche by the method of the present invention has been greatly improved, while the dry paste yield has been reduced to a certain extent, and the active ingredients in Herba Cistanche have been effectively enriched , under the premise of not changing the structure of the active ingredient, the extraction rate of the active ingredient is improved, the production cost is saved, and the process cycle is shortened.

A process for synthesizing 5-hdyroxymethyl-furoxone from 1-chloroglycerine, hydrazine hydrate, sodium hydroxide, methanol sodium, dimethyl ester and 5-nitrofurfural diacetate is disclosed. Its advantages are lower concentration of the aqueous solution of hydrazine hydrate (less than 100%) and no deposit of sodium chloride.

A method for producing hydrogen-containing gas from lignite and peat is to add pulverized lignite or peat, additives and water into a high-pressure reactor, and raise the reaction temperature to 350-350- 700°C, after the reaction pressure reaches 16-40MPa, react for 5-60 minutes, cool to room temperature, and separate gas-liquid products, the separated gas is hydrogen-containing gas. The invention has the advantages of low energy consumption, environmental friendliness, fast reaction speed, short residence time and simple process.

The invention relates to a single-axis variable-speed two-stage asynchronous heart pump with a difference term iterative curve flow path and a method for using it. The single-axis variable-speed two-stage asynchronous heart pump includes a pump casing flow path with a pump inlet and a pump outlet. The pump casing flows There is a fixed guide vane body in the channel, and the first-stage impeller and the second-stage impeller are fixed on the drive shaft through keys; a DC permanent magnet motor is also fixed on the inner side of the hub of the fixed guide vane body through a shock-absorbing support, and the frequency sensor The shell of the fixed guide vane hub is inlaid as a whole, and the fixed guide vane body is provided with a plurality of guide vane blades uniformly distributed around the x-axis, and the fixed guide vane body is fixed on the pump casing through the guide vane blades. On the inner wall of the shell cavity of the channel, the shape line of the inner wall of the shell cavity is a difference iterative curve. The invention has the advantages of compact structure, large flow rate, high head, less damage to blood cells, and reduces the probability of hemolysis caused by the heart pump. The pump speed can be changed in real time through the frequency sensor to meet the real-time demands of human blood pressure and blood flow.

The invention discloses an intelligent dehumidifying system of an electrical terminal box. The intelligent dehumidifying system comprises a hardware equipment box which is installed in the electrical terminal box and a far-end upper computer which communicates with the hardware equipment box. The hardware equipment box comprises a box body, and a switching power supply, a single-chip microcomputer, a temperature and humidity sensor, a water condensing and dehumidifying mechanism and a communication module which are arranged in the box body. The working characteristics of semiconductor refrigeration sheets are utilized, an extremely cold surface is formed on condensation sheets for condensation and dehumidification, and a high temperature surface is formed on heat-radiating fins to heat the previously condensed air again so that temperature in the electrical terminal box is enabled not to sharply fluctuate, and air can be cyclically condensed on the condensation sheets; temperature near an air inlet is low and temperature near an air outlet is high due to the installation position of the condensation sheets and the heat-radiating fins, and the position of the air inlet relative to the air outlet is higher so that air convection is facilitated by the design; and air circulation can be formed in a forced way by the effect of fans so that the common condensation problem in the terminal box, a switch cabinet and other electrical cabinets can be fundamentally solved.

The present invention relates to biodegradable polymer compositions which are especially suitable for the manufacture of articles having a high heat deflection temperature (HDT) by injection molding and thermoforming.

The invention discloses a lock-up clutch control method and system of an automatic transmission with a hydraulic torque converter. The clutch enters the slip control; when the lock-up clutch is in the slip state, if the lock-up clutch exit slip control condition is satisfied, the lock-up clutch is controlled to exit the slip control. The invention can improve the vibration of acceleration and balance the power and comfort of the whole vehicle.