92results about How to "Resolve downtime" patented technology

The invention discloses a method for load control of a steam turbine in a frequency-variable rotating speed reducing process of an SHRT (sinter blower residual heat recovery turbine) set. The method includes: step 1, starting the steam turbine, and detecting regulating steam port openness when the steam turbine is in a maximum non-load speed; step 2, performing rotating speed reducing control of the set, to be more specific, 1) when rotating speed reducing operation of the set is needed, setting VFDS frequency or rotating speed by operating personnel; sending a 'preparing for rotating speed reduction' signal to an instrument control system by VFDS, judging whether the set meets speed regulating conditions or not by the instrument control system, and if yes, feeding a 'permission of rotating speed reduction' signal to VFDS7, and executing the step 2); 2) reducing the rotating speed of a motor to a target rotating speed S1 under the control of VFDS, and in a rotating speed reducing process, reducing output power of the steam turbine to guarantee that current of the motor is constantly set current II. The method is free of human intervention, and the problem of frequency converter failure shutdown caused by current fluctuation of the motor in the rotating speed reducing process is effectively solved; in addition, enormous economic benefits can be created for enterprises by the SHRT set.

The invention belongs to the technical field of flue gas desulfurization, and discloses a limestone-wet flue gas desulfurization defoaming method for a thermal power plant based on a desulfurization defoaming agent. The method comprises the following steps: recording FGD related operation parameters under the working condition of relatively stable operation load, and starting the addition work ofa special defoaming agent for experimental desulfurization after 4 hours; under the conditions that the desulfurization rate is qualified and the PH value is 5.0-5.6, the running number of the slurrycirculating pumps is kept; determining the feeding amount of the defoaming agent according to the operation conditions such as the inlet flue gas amount, the flue gas dust content, the boiler oil feeding amount, the inlet SO2 concentration and the like of the desulfurization system; and adding 0.5-3kg of the special defoaming agent for desulfurization into the pit, stirring for 5-10 minutes, and pumping into an absorption tower through an absorption tower pit pump. The defoaming agent is mainly applied to defoaming of limestone slurry in limestone-wet flue gas desulfurization absorption towersof thermal power plants, municipal coal-fired heat supply units, steel mills and coking plants.

The invention provides a processing method and apparatus for tr069 protocol information. An operating state of an auto config server (ACS) is detected, wherein the operating state is used for indicating a connecting state of the ACS and a CPE; when the operating state is detected to be an off-line state, a processing course is established and session connection between the processing course and the CPE is established, wherein the processing course is used for responding to information sent to the ACS by the CPE based on a tr069 protocol. Therefore, a problem of ACS down time due to a message storm can be solved and thus centralized reporting caused by information accumulation can be avoided, thereby avoiding an impact on the ACS. Under the circumstance that the current hardware cost is not increased, the message storm is resisted, thereby improving the user experience.

The embodiment of the invention discloses a blast furnace blower temperature monitoring method and system and relates to the technical field of monitoring. The blast furnace blower temperature monitoring method comprises the steps that the current temperature of a temperature detecting point is periodically collected through a temperature collecting module and is compared with a preset alarming temperature, and the temperature monitoring result of the temperature detecting point is generated; and the temperature difference absolute value is calculated through the current temperature of the temperature detecting point and the historical temperature of the temperature detecting point and is compared with a preset jumping alarming temperature, and the temperature jumping monitoring result of the temperature detecting point is generated. The condition that the temperature of the temperature detecting point is jumped due to self breakdown of the temperature collecting module is eliminated, the problem that a blast furnace blower stops due to non-self breakdown of the blast furnace blower is solved, and meanwhile, the condition that maintenance personnel of the temperature collecting module confirm the breakdown condition and overhaul the device is facilitated.

The invention relates to the technical field of communication data processing, and discloses an MQTT-based real-time streaming data analysis processing method, which comprises the following steps: (1) receiving user messages in a high-concurrency scene by using a Kafka partition mechanism, writing the user messages into a disk in a sequential writing manner, and storing the user messages in a message queue based on a publishing / subscribing mode; (2) searching and filtering the message through Kafka Stream, persistently storing the message into a database, and keeping monitoring on the state of a receiving end; sending the filtered data to an MQTT server, and storing the filtered data in different themes; and (3) enabling the receiving ends subscribing to different themes in the MQTT protocol to carry out matching to obtain messages, and enabling the receiving ends to send state messages to update the online list every time the receiving ends are online or offline. According to the invention, the data acquisition of the Internet of Things equipment and the control of the Internet of Things equipment are realized, the weight is light, the realization is simple, and the message pushing of the message Qos, TLS and the like is supported.

The invention discloses a data transmission method based on unity of a person and a certificate. The method comprises the following main steps: 1, a person and certificate acquisition device is arranged in a situation in need of identity authentication; 2, the person and certificate acquisition device acquires the face image information and the certificate information of a user; 3, a processing system carries out encryption processing on data, wherein the data comprise the face image information, the certificate information and the position information of the person and certificate acquisitiondevice; 4, whether the data succeed in encryption is judged, if yes, the next step is carried out, or otherwise, the third step is returned; 5, the encrypted data are transmitted to a distributed message system which is Kafka; 6, after the distributed message system receives the data, whether the already-received data are normal is judged, if yes, the next step is entered, and if not, the fifth step is returned; and 7, a big data platform extracts data from the distributed message system. Thus, the previous high concurrent server downtime problem is solved, and the user can conveniently queryreal-time data.

The invention provides an excavation method of a reverse construction method-constructed foundation pit. The mechanical excavation and the hydraulic excavation are combined for construction in the reverse construction method-constructed foundation pit; when the mechanical excavation is convenient, the mechanical excavation is performed; when the mechanical excavation is limited, the hydraulic excavation is performed; a high-pressure water gun scours soil to form mud; the mud flows to a corresponding mud pool; the mud is conveyed to a mud treatment area through a mud discharge pipe; and meanwhile, a basement floor is cast to realize synchronous ground and underground construction. The excavation method effectively improves the soil excavation efficiency, is not limited by the traffic control, shortens the construction period, reduces the cost, saves the energy, and protects the environment.

The invention provides a function test method, a function test system, a data updating method and a data updating system, wherein the function test method comprises the following steps: intercepting acurrent request link sent by an application, and extracting a current request identifier in the current request link; if the current request identifier is searched in the request identifiers stored locally, determining a current response rule corresponding to the current request identifier, wherein the request identifiers stored locally and the response rule are the request identifiers and the response rule which are respectively obtained from a server and are in an effective state; and according to the current response rule, generating a feedback result corresponding to the current request link. Compared with the prior art, the methods and the systems provided by the invention can improve function test efficiency.

The invention discloses an electric lawn mower. The electric lawn mower is provided with a power head, wherein the power head comprises a housing, and at least one battery pack and a motor are arranged in the housing; a plurality of battery pack air inlets are formed in any battery pack, and the housing is provided with first air inlets corresponding to all the battery pack air inlets and allowingcooling air to enter the housing; an air guide pipe for guiding external cooling air into any battery pack is arranged between any battery pack air inlet and the corresponding first air inlet; and abattery pack air outlet allowing cooling airflow after cooling a cell in any battery pack to flow to the motor is formed in the bottom of the battery pack. The electric mower can greatly improve the cooling effect of the battery packs and increase the utilization rate of the cooling air, thereby solving the problem of shutdown caused by over-temperature protection when the environmental temperature is high in the prior art. The arrangement manner can improve the working efficiency of the mower, prolong the cycle life of the cells and increase the capacity utilization rate of the cells.